49 Multi-Benefit Resources

Wellspring: Source Water Resilience and Climate Adaptation

Author: Matthews et al., The Nature Conservancy (2019)
Geography: Global
Level of Detail: Case study, Qualitative description

Availability: Publicly Available

Water Management Strategies:

Specific Benefits or Trade-offs: Agricultural, Community resilience, Energy production, Extreme events, Habitat and biodiversity, Health and safety, In stream flows, System resilience, Water supply reliability

Wellspring: Source Water Resilience and Climate Adaptation contributes to the evolving discussions connected to source water protection, risk, resilience, and climate change. This report provides a thorough description of literature, tools, and case examples of resilient management of source waters.

Climate Risk Informed Decision Analysis (CRIDA), Collaborative Water Resources Planning for an Uncertain Future

Author: Mendoza et al., UNESCO and International Center for Integrated Water Resources Management (ICIWaRM) (2018)
Geography: Global
Level of Detail: Decision support tool

Availability: Publicly Available

Water Management Strategies:

Specific Benefits or Trade-offs: Extreme events, Regulatory compliance, Reputation, System resilience, Water supply reliability

Climate Risk Informed Decision Analysis (CRIDA) is a methodology for water resources planning and management when significant uncertainty exists about future conditions. This guidance document adds to the existing water resources management planning literature by providing a coherent and consistent approach for dealing with anticipated but unquantified changes due to “unknown unknowns” such as climate change that impact project planning, socioeconomic justification, resource management, and engineering design.

Nature-Based Solutions Evidence Tool

Author: University of Oxford (2019)
Geography: Global
Level of Detail: Economic valuation, Quantitative benefits

Availability: Publicly Available

Water Management Strategies: Agricultural flooding, Agricultural land management, Conservation design, Floodplain connectivity and rehabilitation, Forest thinning, Infiltration or filtration, Land Management, Living shorelines, Low impact landscaping, Recharge area protection, Reforestation and forest conservation, Riparian buffers, Runoff conveyance, Runoff storage, Stream protection and restoration, Wetland protection and restoration

Specific Benefits or Trade-offs: Agricultural, Air quality, Ambient water quality, Carbon sequestration, Community resilience, Extreme events, Flooding, GHG emissions, Habitat and biodiversity, Health and safety, In stream flows, Land and environment, Local economy, Peak flood volume, People and Community, Resource recovery, Risk and Resilience, Soil health, Supply augmentation, System resilience, Total flood volume, Water quality, Water Supply, Water supply reliability

The Nature-Based Solutions Evidence Tool is primarily an online catalog of peer-reviewed research that provides evidence of the impacts of nature-based solutions (NbS) on a wide variety of benefit categories. The tool allows the user to filter results in a variety of ways, including by intervention type, habitat type, climate change impact, effect of Nbs on ecosystem service, geography, and more. Results are displayed in a variety of formats, helping the user to understand the landscape of quantitative and economic research related to a variety of NbSs.

Towards a New Paradigm of Urban Water Infrastructure: Identifying Goals and Strategies to Support Multi-Benefit Municipal Wastewater Treatment

Author: Harris-Lovett, Lienert, & Sedlak, University of California, Berkeley (2018)
Geography: U.S.
Level of Detail: Case study, Quantitative benefits

Availability: Publicly Available

Water Management Strategies: Centralized wastewater treatment, Engineered wetlands, Urban and industrial nonpotable reuse, Wastewater Treatment, Water Reuse

Specific Benefits or Trade-offs: Aesthetics, Ambient water quality, Habitat and biodiversity, Land and environment, People and Community, Regulatory compliance, Resource recovery, Risk and Resilience, Supply augmentation, System resilience, Water quality, Water Supply, Water supply reliability

Towards a New Paradigm of Urban Water Infrastructure: Identifying Goals and Strategies to Support Multi-Benefit Municipal Wastewater Treatment examines the decision making barriers to adopting multibenefit solutions. Transitioning to a new paradigm of water management that supports and advances projects with multiple benefits will require new approaches, tools, and systems. This article attempts to identify the obstacles for these new requirements through a study from the San Francisco Bay Area.

The Untapped Potential of California’s Water Supply: Efficiency, Reuse, and Stormwater – Issue Brief

Author: Gleick et al., Pacific Institute, NRDC (2014)
Geography: Western U.S.
Level of Detail: Case study, Qualitative description

Availability: Publicly Available

Water Management Strategies: Agricultural efficiency, Commercial or industrial reuse, Delivery system efficiency, Distributed Stormwater Infrastructure, Indirect potable reuse, Infiltration and filtration, On site nonpotable reuse, Runoff storage, Urban and industrial nonpotable reuse, Urban indoor efficiency, Urban outdoor efficiency, Water Conservation and Efficiency, Water Reuse

Specific Benefits or Trade-offs: Ambient water quality, Demand reduction, Energy, Energy for water extraction, GHG emissions, Land and environment, Local economy, People and Community, Risk and Resilience, Supply augmentation, Water quality, Water Supply, Water supply reliability

Increased pressures on Californias water supply, including from population growth and intense periods of drought exacerbated by climate change, are leading to the overuse of surface water and groundwater. But with existing technology and conservation methods, the state can take vital steps to improve its resilience to drought and plan for a more sustainable water future. This issue brief, produced in collaboration with the Natural Resources Defense Council, is a statewide analysis of the potential for improved efficiency in agricultural and urban water use, water reuse and recycling, and increased capturing of local rainwater.

Water LA

Author: The River Project (2018)
Geography: Western U.S.
Level of Detail: Case study, Economic valuation, Quantitative benefits

Availability: Publicly Available

Water Management Strategies: Conservation design, Distributed Stormwater Infrastructure, Infiltration or filtration, Low impact landscaping, Runoff conveyance, Runoff storage

Specific Benefits or Trade-offs: Aesthetics, Air quality, Ambient water quality, Carbon sequestration, Community resilience, End use energy, Energy, Energy for wastewater, Energy for water extraction, Energy for water treatment, Flooding, GHG emissions, Habitat and biodiversity, Health and safety, Land and environment, Local economy, People and Community, Recreation, Risk and Resilience, Soil health, Supply augmentation, Total flood volume, Urban heat island, Water quality, Water Supply, Water supply reliability

The 2018 Water LA report by the River Project explores the opportunities for and challenges of building a resilient region by making small, distributed changes to the urban landscape. The report offers a case study from LA where parcel-scale water management projects provide different social, environmental, and economic benefits.

Healthy Lands and Healthy Economies: The multiple benefits of Sonoma County working and natural lands

Author: Sonoma County Ag + Open Space (2018)
Geography: Western U.S.
Level of Detail: Economic valuation, Quantitative benefits

Availability: Publicly Available

Water Management Strategies: Agricultural land management, Land Management, Recharge area protection, Reforestation and forest conservation, Stream restoration, Wetland protection

Specific Benefits or Trade-offs: Aesthetics, Air quality, Carbon sequestration, Extreme events, Flooding, Habitat and biodiversity, Land and environment, Local economy, Peak flood volume, People and Community, Recreation, Soil health, System resilience, Total flood volume, Water quality, Water Supply, Water supply reliability

Sonoma County Ag + Open Space presents the results of a thorough economic assessment of the county’s agricultural and natural lands, incorporating the multiple benefits of these landscapes.

Valuing investments in sustainable land management in the Upper Tana River basin, Kenya

Author: Vogl et al., (2017)
Geography: Outside U.S.
Level of Detail: Case study, Quantitative benefits

Availability: Paywall

Water Management Strategies: Agricultural land management, Land Management, Reforestation and forest conservation, Riparian buffers

Specific Benefits or Trade-offs: Agricultural benefits, Ambient water quality, Drinking water quality, Energy, Energy for water treatment, Energy production, Flooding, In stream flows, Land and environment, Risk and Resilience, Soil quality, Supply augmentation, Total peak volume, Water quality, Water Supply, Water supply reliability

Valuing investments in sustainable land management in the Upper Tana basin, Kenya provides a case study of valuing ecosystem services using the InVEST model (of the Natural Capital Project) to assess the multiple benefits of land management practices in a large, diverse watershed. This study provides detailed analysis of targeted interventions that take into account stakeholder preferences, local environmental and socio-economic conditions. The outputs of the model link biophysical outputs to monetary metrics, including reduced water treatment costs, increased hydropower production, and crop yield benefits.

The Green Edge: How Commercial Property Investment in Green Infrastructure Creates Value

Author: Clements & St. Juliana, NRDC (2013)
Geography: Northeastern U.S.
Level of Detail: Case study, Economic valuation, Qualitative description, Quantitative benefits

Availability: Publicly Available

Water Management Strategies: Conservation design, Distributed Stormwater Infrastructure, Infiltration or filtration, Low impact landscaping, Runoff conveyance, Runoff storage

Specific Benefits or Trade-offs: Aesthetics, Affordability, End use energy, Energy, Local economy, People and Community, Regulatory compliance, Reputation, Risk and Resilience, System resilience, Urban heat island, Water supply reliability

This report explores the range of economic benefits that accrue to commercial property owners (including owners of multifamily residential buildings) when they install green infrastructure on their property to improve stormwater management.

Climate information? Embedding climate futures within temporalities of California water management

Author: Baker, Ekstrom, & Bedsworth, (2018)
Geography: Western U.S.
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: N/A

Specific Benefits or Trade-offs: Extreme events, Risk and Resilience, System resilience, Water supply reliability

Climate information? Embedding climate futures within temporalities of California water management analyzes the use of climate change information in water resources management decisions in California. The information was obtained by conducting interviews (n=61) with drinking water utility managers in California, analyzing three different methodologies for incorporation of climate change information: 1) modeled futures, 2) whose future?, and 3) truncated futures. The interviews revealed that ‘modeled futures’ most closely aligned with supply-demand projections in widely-accepted literature.

Impacts of Urban Water Conservation Strategies on Energy, Greenhouse Gas Emissions, and Health: Southern California as a Case Study

Author: Sokolow et al., (2016)
Geography: U.S.
Level of Detail: Quantitative benefits

Availability: Publicly Available

Water Management Strategies: Desalination, Groundwater Management, Runoff conveyance, Runoff storage, salt water desalination, Surface Water Storage, Urban and industrial nonpotable reuse, Urban outdoor efficiency, Water Conservation and Efficiency, Water Reuse, Water Transfer

Specific Benefits or Trade-offs: Air quality, Demand reduction, End use energy, Energy, Energy for water extraction, Energy for water treatment, GHG emissions, Health and safety, Land and environment, People and Community, Supply augmentation, Urban heat island, Water supply reliability

Impacts of Urban Water Conservation Strategies on Energy, Greenhouse Gas Emissions, and Health: Southern California as a Case Study expands on a 2014 health impact assessment of California’s urban water conservation strategies to evaluate the impacts of two possible conservation approaches: banning landscape irrigation and expanding alternative water sources (e.g. recycled water). Findings show that expanding alternative water sources can have a highly positive impact on public health.

Achieving Resilience through Water Recycling in Peri-Urban Agriculture

Author: Attwater & Derry, (2017)
Geography: Outside U.S.
Level of Detail: Case study, Qualitative description

Availability: Publicly Available

Water Management Strategies: Agricultural nonpotable reuse, Centralized Stormwater Infrastructure, Centralized wastewater treatment, Constructed stormwater wetlands, Distributed Stormwater Infrastructure, Flood Control, On site nonpotable reuse, Runoff conveyance, Runoff storage, Wastewater Treatment, Water Reuse

Specific Benefits or Trade-offs: Aesthetics, Agriculture, Ambient water quality, Community resilience, Habitat and biodiversity, Land and environment, Local economy, People and Community, Recreation, Resource recovery, Risk and Resilience, Supply augmentation, System resilience, Water quality, Water Supply, Water supply reliability

Achieving Resilience through Water Recycling in Peri-Urban Agriculture examines water recycling for agricultural use in the peri-urban regions of Western Sydney, Australia. The study provides a qualitative assessment of the benefits associated with agricultural water reuse of treated wastewater and drinking water in the context of the communities larger water system. The benefits identified include enhanced landscape ecology, environmental risk management, water supply reliability, agricultural products and services, reduced wastewater discharges to receiving waters, provision of ecosystem services, community livelihood, social values, and overall enhanced resilience.

Policy and Economics of Managed Aquifer Recharge and Water Banking

Author: Megdal & Dillion, (2015)
Geography: Global
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: Groundwater Management, Groundwater recharge, Groundwater storage, Indirect potable reuse, Water Reuse

Specific Benefits or Trade-offs: Habitat and biodiversity, Land and environment, Local economy, People and Community, Risk and Resilience, Supply augmentation, System resilience, Water quality, Water Supply, Water supply reliability

Policy and Economics of Managed Aquifer Recharge and Water Banking provides a summary of a series of papers on managed aquifer recharge (MAR) programs with excess surface water and recycled water. The paper argues that several limitations to implementation of MAR programs exist, including a deficiency in policies and government frameworks that support MAR programs, as well as limited economic analyses on MAR’s programs. The goal of this summary report is to fill these regulatory and economic gaps so as to encourage MAR program development and implementation.

Relevance and Benefits of Urban Water Reuse in Tourist Areas

Author: Lazarova, Sturny, & Sang, (2012)
Geography: Outside U.S.
Level of Detail: Case study, Qualitative description

Availability: Publicly Available

Water Management Strategies: Desalination, On site nonpotable reuse, Seawater desalination, Urban and industrial nonpotable reuse, Water Reuse

Specific Benefits or Trade-offs: Aesthetics, Affordability, Ambient water quality, Habitat and biodiversity, Health and safety, Land and environment, Local economy, People and Community, Recreation, Risk and Resilience, Supply augmentation, Water quality, Water Supply, Water supply reliability

Relevance and Benefits of Urban Water Reuse in Tourist Areas presents a case study on factors that influenced the implementation of water reuse on the island of Bora Bora, French Polynesia. The study addresses the regulatory and technical challenges to implementation of water reuse systems, as well as provides methods for overcoming these challenges through the Bora Bora case study. The report emphasizes the need for reliability in treatment operations, feasible prices and operation costs, and effective utilization of the co-benefits of water reuse projects.

Sustaining California Agriculture in an Uncertain Future

Author: Cooley, Christian-Smith, & Gleick, Pacific Institute (2009)
Geography: Western U.S.
Level of Detail: Quantitative benefits

Availability: Publicly Available

Water Management Strategies: Agricultural efficiency, Water Conservation and Efficiency

Specific Benefits or Trade-offs: Agriculture, Demand reduction, Energy, Energy for water extraction, Habitat and biodiversity, In stream flows, Land and environment, Local economy, People and Community, Risk and Resilience, Soil health, Supply augmentation, Water quality, Water Supply, Water supply reliability

Sustaining California Agriculture in an Uncertain Future examines the potential for agricultural efficiency in California. The report qualitatively and quantitatively explores the potential for water conservation and efficiency under the following management strategies: 1) efficient irrigation technology, 2) improved irrigation scheduling, and 3) regulated deficit irrigation. All three options show significant water savings as well as provide various co-benefits including, reduced water and energy costs, improved crop quality and yield,improved soil health, reduced vulnerability to drought, increased revenues, improved water quality, improved quantity and timing of instream flows, and fish and wildlife benefits.

Green Remediation: Incorporating Sustainable Environmental Practices into Remediation of Contaminated Sites

Author: U.S. EPA Office of Solid Waste and Emergency Response (2008)
Geography: U.S.
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: Environmental Remediation, In situ environmental treatment, Physical contaminant removal

Specific Benefits or Trade-offs: Air quality, Ambient water quality, Habitat and biodiversity, Land and environment, Local economy, People and Community, Risk and Resilience, Soil health, Water quality, Water supply reliability

Green Remediation: Incorporating Sustainable Environmental Practices into Remediation of Contaminated Sites contains fourteen case studies conducted throughout the United States that incorporated sustainable environmental practices into remediation of contaminated sites. The report names this strategy ‘green remediation’ and defines it as, “the practice of considering all environmental effects of remedy implementation and incorporating options to maximize net environmental benefit of cleanup actions”. The case studies provide examples of how green remediation strategies can increase the net benefit of cleanup, provide project cost savings, and expand the universe of long-term property use or reuse options without compromising cleanup goals.

Just the FACTS: Dams in California

Author: Public Policy Institute of California (PPIC) (2017)
Geography: Western U.S.
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: Dam removals, Land Management, Surface Water Storage

Specific Benefits or Trade-offs: Energy, Energy production, Flooding, Habitat and biodiversity, Land and environment, People and Community, Recreation, Risk and Resilience, Water supply reliability

Just the FACTS: Dams in California highlights several key considerations of dams in California. The considerations include the crucial role of dams in water management in California, the multiple objectives that dams are designed to meet and the conflicts that exist within these objectives, the need for dam infrastructure upgrades, the benefits of new dams, and the reasons to remove old dams. The multiple benefits of dams include supplying water, reducing flood risk, providing energy, and recreation, however, in order to provide these benefits dam operations conflict with several public benefits, including wildlife habitats and recreation.

The Value of Water Supply Reliability in the Residential Sector

Author: Raucher et al., WateReuse Research Foundation, Bureau of Reclamation, San Francisco Public Utilities Commission (2006)
Geography: Western U.S.
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: Agricultural nonpotable reuse, Brackish desalination, Desalination, Indirect potable reuse, On site nonpotable reuse, Seawater desalination, Urban and industrial nonpotable reuse, Water Reuse

Specific Benefits or Trade-offs: Risk and Resilience, Water supply reliability

The Value of Water Supply Reliability in the Residential Sector describes residential customer’s willingness to pay for improving water reliability. The ‘stated preference’ surveys revealed that residential customers were willing to pay in the range of $20-$40 per year to improve water supply reliability and avoid relatively severe water use restrictions, but are not willing to pay as much to reduce low-level water use restrictions. The survey also revealed that water reuse had large customer support, whereas raising water rates and increasing water imports did not have much support.

Recognizing the Value of Energy Efficiency’s Multiple Benefits

Author: Russell et al., (2015)
Geography: U.S.
Level of Detail: Economic valuation

Availability: Publicly Available

Water Management Strategies: Delivery system efficiency, Urban indoor efficiency, Water Conservation and Efficiency

Specific Benefits or Trade-offs: Affordability, Air quality, Demand reduction, End use energy, Energy, Energy for wastewater, Energy for water extraction, Energy for water treatment, Extreme events, Health and safety, Land and environment, People and Community, Risk and Resilience, System resilience, Water Supply, Water supply reliability

Recognizing the Value of Energy Efficiency’s Multiple Benefits emphasizes the multiple benefits of improved energy efficiency for the residential, business, and utility sectors. The multiple benefits identified within this report include comfort, health, financial, and risk-abatement. The report argues that these multiple benefits can exceed utility bill savings, and therefore should be included into management decisions, policy decisions, and efficiency programs.

Energy Down the Drain: The Hidden Costs of California’s Water Supply

Author: Cohen, Nelson, & Wolff, NRDC, Pacific Institute (2004)
Geography: Western U.S.
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: Agricultural efficiency, Delivery system efficiency, On site nonpotable reuse, Urban and industrial nonpotable reuse, Urban indoor efficiency, Urban outdoor efficiency, Water Conservation and Efficiency, Water Reuse

Specific Benefits or Trade-offs: Air quality, Ambient water quality, Demand reduction, Energy, Energy production, Habitat and biodiversity, Land and environment, Risk and Resilience, Water quality, Water Supply, Water supply reliability

Energy Down the Drain: The Hidden Costs of California’s Water Supply analyzes the connections between power and water resources in California. The report presents several key findings: 1) water conservation lowers energy use and energy bills, 2) water recycling is a highly energy efficient water source, 3) retiring agricultural land may increase energy use if the water is transferred to other agricultural or urban uses, 4) Retiring agricultural land can save energy if the water is dedicated to the environment, and 5) diverting water above dams costs an enormous amount of power and money. Based on these findings it is recommended that decision makers better integrate energy into water policy decision-making, as well as give water conservation higher priority.

Agricultural Water Conservation and Efficiency Potential in California

Author: NRDC, Pacific Institute (2014)
Geography: Western U.S.
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: Agricultural efficiency, Water Conservation and Efficiency

Agricultural Water Conservation and Efficiency Potential in California outlines the benefits of improving agricultural efficiency in California. The benefits cited include reduced consumptive use, improved water quality and instream flow, energy savings, increased yields, improved crop quality, reduced fertilizer, water, and energy costs, improved reliability of existing supplies, management flexibility, improved downstream water quality, and enhanced recreation.

Policy settings, regulatory frameworks and recycled water schemes

Author: Institute for Sustainable Futures (2013)
Geography: Outside U.S.
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: Agricultural nonpotable reuse, On site nonpotable reuse, Urban and industrial nonpotable reuse, Water Reuse

Specific Benefits or Trade-offs: Affordability, Ambient water quality, Health and safety, People and Community, Regulatory compliance, Risk and Resilience, Water quality, Water supply reliability

Policy settings, regulatory frameworks and recycled water schemes analyzes eight water recycling case studies conducted internationally to illustrate how the associated project investment decisions are influenced by regulations and legal frameworks. The main focus areas are environmental protection of receiving waters, water security, developer charges, and recycled water scheme regulation to protect public health. Within each of these areas, various co-benefits are discussed.

Envision V3 User Manual

Author: Institute for Sustainable Infrastructure (2017)
Geography: Global
Level of Detail: Decision support tool

Availability: Publicly Available

Water Management Strategies: Centralized Stormwater Infrastructure, Distributed Stormwater Infrastructure; Wastewater Treatment, Flood Control

Specific Benefits or Trade-offs: Agriculture, Air quality, Ambient water quality, Carbon sequestration, Community resilience, Demand reduction, Drinking water quality, End use energy, Energy, Energy for wastewater, Energy for water extraction, Energy for water treatment, Flooding, Habitat and biodiversity, Health and safety, Land and environment, Local economy, Peak flood volume, People and Community, Recreation, Soil health, System resilience, Total flood volume, Water quality, Water Supply, Water supply reliability

The Envision V3 (Draft Credits for Public Review and Comment) user manual outlines additions to the Envision framework, a sustainability framework that aims to analyze infrastructure projects and promote collaboration on multi-benefit projects in order to improve system synergy. The framework defines co-benefits as services not directly related to the project’s primary function, and identifies five benefit categories: 1) quality of life, 2) leadership, 3) resource allocation, 4) natural world, and 5) climate and risk. Envision V3, launched in late 2017, modifies the final category, instead calling it ‘risk and resilience’.

Envision Framework

Author: Institute for Sustainable Infrastructure (N/A)
Geography: Global
Level of Detail: Decision support tool

Availability: Publicly Available

Water Management Strategies: Centralized Stormwater Infrastructure, Distributed Stormwater Infrastructure; Wastewater Treatment, Flood Control

Envision is a framework that provides the guidance needed to initiate this systemic change in the planning, design and delivery of sustainable and resilient infrastructure. Envision is a decision-making guide, not a set of prescriptive measures. Envision provides industry-wide sustainability metrics for all types and sizes of infrastructure to help users assess and measure the extent to which their project contributes to conditions of sustainability across the full range of social, economic, and environmental indicators.

The Hidden Value of Landscapes: Implications for Drought Planning

Author: Johnson, Koski, & O'Connor, Colorado State University (2017)
Geography: Western U.S.
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: Distributed Stormwater Infrastructure, Low impact landscaping

Specific Benefits or Trade-offs: Aesthetics, Air quality, Carbon sequestration, Community resilience, Flooding, Habitat and biodiversity, Health and safety, Land and environment, Local economy, Peak flood volume, People and Community, Risk and Resilience, Total flood volume, Urban heat island, Water supply reliability

The Hidden Value of Landscapes: Implications for Drought Planning analyzes the impacts of landscaping on quality of life, environment, and land values in Colorado. The report illustrates that while landscaping can provide the primary goal of drought relief, it also provides a suite of co-benefits. These benefits include environmental benefits (i.e., air quality, carbon sequestration, cooling effects, stormwater management, and wildlife habitat), increased real estate value, and enhanced community and health.

Assessing the Return on Investment in Watershed Conservation: Best Practices Approach and Case Study for the Rio Camboriú PWS Program, Santa Catarina, Brazil

Author: Kroeger et al., The Nature Conservancy (2017)
Geography: Outside U.S.
Level of Detail: Case study, Economic valuation

Availability: Publicly Available

Water Management Strategies: Land Management, Reforestation and forest conservation, Riparian buffers

Specific Benefits or Trade-offs: Ambient water quality, Drinking water quality, Habitat and biodiversity, Land and environment, Risk and Resilience, Supply augmentation, Water quality, Water Supply, Water supply reliability

Assessing the Return on Investment in Watershed Conservation applies a return on investment (ROI) framework to a watershed conservation project in Santa Catarina, Brazil. The framework involves quantification of the relationships between 1) intervention, 2) ecosystem structure, 3) ecosystem function, 4) ecosystem service, 5) benefit, and 6) values and program cost. The report illustrates that restoring source watersheds is a cost-effective way to reduce drinking water treatment costs, improve water supply resilience, and protect biodiversity. The ecosystem services quantified in the study include sediment concentrations at water treatment intake, which when reduced can lead to avoided peak season water loss, avoided use of chemicals, avoided dry sludge landfilling, and avoided pumping. The report also includes costs for landowner engagement and interventions, as well as land rentals.

Drivers for and against municipal wastewater recycling: A review

Author: Kunz et al., (2016)
Geography: Outside U.S.
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: On site nonpotable reuse, Water Reuse

Specific Benefits or Trade-offs: Risk and Resilience, Supply augmentation, Water Supply, Water supply reliability

Drivers for and against municipal wastewater recycling: A review provides a comprehensive review of drivers for and against wastewater recycling at different scales, identifying more than 150 unique social, economic, business, policy, technical, and natural drivers. The report provides a framework that categorizes studies according to level of analysis (i.e., city, state, country, global) and outcomes explored (i.e., program implementation, percentage of water demand covered by recycled water), and then identifies whether the study was for or against recycled water use, and the drivers for this opinion (i.e. social, natural, technical, economic, policy, or business).

Why Do Some Water Utilities Recycle More than Others? A Qualitative Comparative Analysis in New South Wales, Australia

Author: Kunz et al., (2015)
Geography: Outside U.S.
Level of Detail: Qualitative description

Availability: Paywall

Water Management Strategies: Agricultural nonpotable reuse, On site nonpotable reuse, Urban and industrial nonpotable reuse, Water Reuse

Specific Benefits or Trade-offs: Habitat and biodiversity, Land and environment, Risk and Resilience, Supply augmentation, Water Supply, Water supply reliability

Why Do Some Water Utilities Recycle More than Others? A Qualitative Comparative Analysis in New South Wales, Australia provides a comparative analysis of drivers for water reuse at 25 different utilities in New South Wales, Australia. The statistical method employed is able to evaluate the influence of six different factors on two specific outcomes: 1) agricultural use and 2) industrial, municipal, and commercial use. They found that factors relating to economics are important for industrial, municipal, and commercial use, and factors relating to water stress and geographic proximity are important for agricultural use.

Waste Less, Pollute Less: Using Urban Water Conservation to Advance Clean Water Act Compliance

Author: Levine, NRDC (2014)
Geography: U.S.
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: Urban indoor efficiency, Water Conservation and Efficiency

Specific Benefits or Trade-offs: Demand reduction, Drinking water quality, Regulatory compliance, Risk and Resilience, System resilience, Water quality, Water Supply, Water supply reliability

Waste Less, Pollute Less: Using Urban Water Conservation to Advance Clean Water Act Compliance (blog and issue brief) presents the case for water conservation and efficiency measures to help municipalities and wastewater treatment facilities improve compliance with the federal Clean Water Act. The authors call on the U.S. EPA and the States to implement measures to support increased water conservation and efficiency measures with the goal of improving CWA compliance.

Making the Utility Case for Onsite Non-potable Water Systems

Author: National Blue Ribbon Commission for Onsite Non-potable Water Systems (US Water Alliance, Water Research Foundation) (2018)
Geography: U.S.
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: On site nonpotable reuse, Water Reuse

Specific Benefits or Trade-offs: Affordability, Ambient water quality, Community resilience, Flooding, Habitat and biodiversity, Land and environment, Peak flood volume, People and Community, Regulatory compliance, Risk and Resilience, System resilience, Total flood volume, Water quality, Water supply reliability

Making the Utility Case for Onsite Non-potable Water Systems is a report that 1) defines the scope of onsite non-potable water systems, 2) highlights how utilities are using onsite non-potable water systems to meet One Water goals, 3) presents key considerations for implementing onsite non-potable water systems, and 4) outlines the role of utility leadership in implementing onsite non-potable water systems. The report also includes case studies from throughout the U.S. that illustrate the multiple benefits produced from onsite non-potable water systems, including system resilience, diversification of water supplies, stormwater management and pollution reduction, compliance with policy and regulatory requirements, reducing capital costs, enhancing environmental and community facilities, providing opportunities for public-private partnerships, and technology advancement.

Guidelines for Preparing Economic Analysis for Water Recycling Projects

Author: De Souza et al., University of California Davis Center for Watershed Sciences (2011)
Geography: Western U.S.
Level of Detail: Decision support tool, Economic valuation

Availability: Publicly Available

Water Management Strategies: On site nonpotable reuse, Urban and industrial nonpotable reuse, Water Reuse

Specific Benefits or Trade-offs: Ambient water quality, Demand reduction, In stream flows, Land and environment, People and Community, Recreation, Risk and Resilience, Soil health, Supply augmentation, Water quality, Water Supply, Water supply reliability

Guidelines for Preparing Economic Analysis for Water Recycling Projects provides an in-depth methodology for economic analysis of water recycling projects, including all benefits and costs to whomsoever they accrue at the completion of the project. The methodology includes benefits that directly affect the proposing agency, individuals, households, or businesses, such as water supply, water supply reliability, and local control, as well as the indirect benefits, such as environmental changes (i.e., streamflow, reducing groundwater pumping), recreation, nutrient loading, and effect on soil and groundwater.

Characterization of unplanned water reuse in the EU

Author: Drewes et al., Technical University of Munich (2017)
Geography: Outside U.S.
Level of Detail: Quantitative benefits

Availability: Publicly Available

Water Management Strategies: Agricultural nonpotable reuse, Agricultural reuse, Indirect potable reuse, On site nonpotable reuse, Urban and industrial nonpotable reuse, Water Reuse

Specific Benefits or Trade-offs: Ambient water quality, Drinking water quality, In stream flows, Land and environment, Risk and Resilience, Water quality, Water supply reliability

Characterization of unplanned water reuse in the EU presents findings from research conducted to quantify the impacts of unintentional or ‘de facto’ water reuse within Europe. De facto water reuse occurs where the outflow of treated wastewater flows into a surface water or groundwater body that is then used as a water supply source, without the intention of having that supply be a reuse supply. De facto reuse may cause adverse impacts on aquatic life, downstream surface water quality, and groundwater quality.

The Value of Green Infrastructure for Urban Climate Adaptation

Author: Foster, Lowe, & Winkelman, Center for Clean Air Policy (2011)
Geography: Global
Level of Detail: Decision support tool, Economic valuation

Availability: Publicly Available

Water Management Strategies: Conservation design, Distributed Stormwater Infrastructure, Infiltration or filtration, Low impact landscaping, Runoff conveyance, Runoff storage

Specific Benefits or Trade-offs: Aesthetics, Ambient water quality, Community resilience, Demand reduction, End use energy, Energy, Extreme events, Flooding, Peak flood volume, People and Community, Risk and Resilience, System resilience, Total flood volume, Water quality, Water Supply, Water supply reliability

The Value of Green Infrastructure for Urban Climate Adaptation provides a methodology for calculating the costs and benefits of green infrastructure, with particular focus on urban climate adaptation. Benefits of green infrastructure include land value, quality of life, public health, hazard mitigation, and regulatory compliance. In the report, economic analyses are provided for “Eco-Roofs,” Green Alleys and Streets, and Urban Forestry with several case study examples provided.

Freshwater Health Index Dongjiang Basin, China: An assessment of freshwater ecosystem health

Author: Freshwater Health Index (2017)
Geography: Outside U.S.
Level of Detail: Decision support tool, Quantitative benefits

Availability: Publicly Available

Water Management Strategies: Land Management

Specific Benefits or Trade-offs: Ambient water quality, Demand reduction, Flooding, Habitat and biodiversity, Land and environment, Peak flood volume, People and Community, Recreation, Regulatory compliance, Risk and Resilience, Supply augmentation, Total flood volume, Water quality, Water Supply, Water supply reliability

The Freshwater Health Index is a tool that examines three components of ecosystem health: ecosystem vitality (i.e., water quantity, water quality, basin condition, and biodiversity), ecosystem services (i.e., provisioning, regulation and support, and cultural), and governance & stakeholders (i.e., enabling environment, stakeholder management, vision and adaptive governance, and effectiveness). The report applies the Freshwater Health Index to the Dongjiang Basin in China, providing semi-quantitative scores for each ecosystem health component.

Water-use efficiency and productivity: rethinking the basin approach

Author: Gleick, Smith, & Cooley, (2011)
Geography: Global
Level of Detail: Qualitative description

Availability: Paywall

Water Management Strategies: Agricultural efficiency, Delivery system efficiency, Urban indoor efficiency, Urban outdoor efficiency, Water Conservation and Efficiency

Specific Benefits or Trade-offs: Ambient water quality, Demand reduction, Drinking water quality, End use energy, Energy, Risk and Resilience, Water quality, Water Supply, Water supply reliability

Water-use efficiency and productivity: rethinking the basin approach is a response to a paper in Water International. The paper highlights major components of inefficient water use that were ignored, examines water productivity rather than just water efficiency, and discusses co-benefits. The co-benefits of water-use efficiency examined are improved water quality, increased production, improved water supply reliability, decreased energy demands, and reduced or delayed infrastructure investments.

Desalination, with a Grain of Salt: A California Perspective

Author: Cooley, Gleick, & Wolff, Pacific Institute (2006)
Geography: Western U.S.
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: Desalination, Seawater

Specific Benefits or Trade-offs: Drinking water quality, Extreme events, Risk and Resilience, System resilience, Water quality, Water supply reliability

Desalination, with a Grain of Salt: A California Perspective presents an overview of the benefits and risks of ocean desalination, with a focus on the economic, cultural, and environmental benefits and costs. The benefits cited within this report include water quality, water supply diversity and reliability, energy intensity, and environmental impacts. The report concludes that the economic costs are high and other options may be available, including treating low-quality local water sources, encouraging regional water transfers, improving conservation and efficiency, accelerating wastewater recycling and reuse, and implementing smart land-use planning.

Berkeley Resilience Strategy

Author: City of Berkeley, 100 Resilient Cities, AECOM (2016)
Geography: Western U.S.
Level of Detail: Case study, Qualitative description

Availability: Publicly Available

Water Management Strategies: Distributed Stormwater Infrastructure, Water Conservation and Efficiency, Water Reuse

Specific Benefits or Trade-offs: Aesthetics, Demand reduction, Extreme events, Flooding, Habitat and biodiversity, Land and environment, People and Community, Risk and Resilience, Supply augmentation, System resilience, Water Supply, Water supply reliability

100 Resilient Cities is an organization working across the globe to help plan for more resilient and successful cities. The Resilience Framework guides users towards projects that provide overall system and infrastructure resilience, often including water systems and infrastructure. The report includes a case study on Berkeley, California’s goal of adapting to climate change through green infrastructure, diversifying their water supply, and sustainable landscapes. The Resilience Framework yields a qualitative measure of ‘city resilience’, defined as “the ability of the individuals, institutions, businesses, and systems within the community to survive, adapt, and grow no matter what chronic stress or acute shock it experiences.”

Living Streets Economic Feasibility Project: Final Report

Author: Abdullah & Blyth, Heal the Bay, Climate Resolve, GreenLA Coalition (2016)
Geography: Western U.S.
Level of Detail: Case study, Economic valuation

Availability: Publicly Available

Water Management Strategies: Conservation design, Distributed Stormwater Infrastructure, Infiltration or filtration, Low impact landscaping, Runoff conveyance, Runoff storage

Specific Benefits or Trade-offs: Aesthetics, Affordability, Air quality, Ambient water quality, Carbon sequestration, Demand reduction, Energy, Energy for wastewater, Flooding, Habitat and biodiversity, Health and safety, Land and environment, Local economy, People and Community, Recreation, Regulatory compliance, Reputation, Risk and Resilience, Soil health, Supply augmentation, System resilience, Urban heat island, Water quality, Water Supply, Water supply reliability

Living Streets Economic Feasibility Report presents an alternate, new paradigm to guide the future of street and sidewalk infrastructure design and creation for Los Angeles. The term they use for this new paradigm is “Living Streets”, and it incorporates green infrastructure and stormwater capture within street design to improve air quality, water quantity and quality, flooding, human health, and aesthetics within urban regions. The report presents the costs and benefits of Living Streets, and compares them to the costs and benefits of continuing with business as usual, as well as against what they call “Green Streets,” “Cool Streets,” and “Complete Streets.”

Beyond the Source: The environmental, economic and community benefits of source water protection

Author: Abell et al., The Nature Conservancy (2017)
Geography: Global
Level of Detail: Decision support tool, Quantitative benefits

Availability: Publicly Available

Water Management Strategies: Agricultural land management, Centralized Stormwater Infrastructure, Constructed stormwater wetlands, Distributed Stormwater Infrastructure, Flood Control, Land Management, Reforestation and forest conservation, Riparian buffers, Wetland protection

Specific Benefits or Trade-offs: Aesthetics, Agriculture, Air quality, Ambient water quality, Carbon sequestration, Community resilience, Extreme events, Habitat and biodiversity, Health and safety, Land and environment, People and Community, Resource recovery, Risk and Resilience, Soil health, System resilience, Water quality, Water supply reliability

Beyond the Source is an in-depth, global study conducted by the Nature Conservancy on source water protection projects. In the report these projects are described as “nature-based solutions” that can improve water quality and quantity. Projects include targeted land protection, revegetation, riparian restoration, agricultural best management practices, ranching best management practices, fire risk management, wetland restoration and creation, and road management. The report provides a qualitative framework as well as quantitative guidance for calculating the multiple benefits.

Water Efficiency for Instream Flow: Making the Link in Practice

Author: Alliance for Water Efficiency, American Rivers, Environmental Law Institute (2011)
Geography: Western U.S.
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: Agricultural efficiency, Delivery system efficiency, Urban indoor efficiency, Urban outdoor efficiency, Water Conservation and Efficiency

Specific Benefits or Trade-offs: Demand reduction, In stream flows, Land and environment, Reputation, Risk and Resilience, Water Supply, Water supply reliability

Water Efficiency for Instream Flow: Making the Link in Practice examines the potential for linking water efficiency efforts to improving instream flows within the Colorado River Basin. The report concludes that improving water efficiency can allow for population and economic growth without requiring a large investment in new or expanded water supplies or wastewater. It also concludes that environment and state regulatory requirements can drive water efficiency efforts. The report includes a qualitative discussion on the following benefits: reduced surface or groundwater withdrawals, operational flexibility for water utility, and instream flows.

Putting Green to Work: Economic Recovery Investments for Clean and Reliable Water

Author: American Rivers (2010)
Geography: U.S.
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: Centralized Stormwater Infrastructure, Centralized wastewater treatment, Delivery system efficiency, Distributed Stormwater Infrastructure, Flood Control, Infiltration or filtration, Land Management, On site nonpotable reuse, Retention basin, Riparian buffers, Runoff conveyance, Runoff storage, Storm drains and pipes, Stream protection and restoration, Urban indoor efficiency, Urban outdoor efficiency, Wastewater Treatment, Water Conservation and Efficiency, Water Reuse, Water Transfer, Wetland protection and restoration

Specific Benefits or Trade-offs: Aesthetics, Ambient water quality, Demand reduction, Drinking water quality, Energy, Flooding, Habitat and biodiversity, In stream flows, Land and environment, People and Community, Risk and Resilience, Supply augmentation, System resilience, Urban heat island, Water quality, Water Supply, Water supply reliability

Putting Green to Work: Economic Recovery Investments for Clean and Reliable Water categorizes “green” and “bright green” projects that provide multiple environmental and economic benefits, including improved water quality and quantity, reduced runoff and flooding, groundwater recharge, improved habitats, reduced energy use, and overall water supply reliability. The report focuses primarily on green infrastructure and demand management projects, as well as leveraging natural capital for water management, including examples from specific states and cities with a focus on funding projects. The report provides a qualitative discussion of the multiple benefits.

Banking on Green: A Look at How Green Infrastructure Can Save Municipalities Money and Provide Economic Benefits Community-wide

Author: American Rivers, the Water Environment Federation, the American Society of Landscape Architects, ECONorthwest (2012)
Geography: U.S.
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: Conservation design, Distributed Stormwater Infrastructure, Infiltration or filtration, Low impact landscaping, Runoff conveyance, Runoff storage

Specific Benefits or Trade-offs: Aesthetics, Air quality, Demand reduction, Energy, Energy for wastewater, Extreme events, Flooding, Health and safety, Land and environment, Local economy, Peak flood volume, People and Community, Recreation, Risk and Resilience, System resilience, Urban heat island, Water quality, Water Supply, Water supply reliability

Banking on Green provides a business case for green infrastructure practices in the United States. Benefits cited within the report include reduced stormwater runoff, reduced energy costs, reduced impacts of flooding, improvements in public health, and reduced infrastructure costs. Within the report, it is argued that green infrastructure can blend seamlessly with traditional grey infrastructure, and make communities more resilient in the face of extreme events and climate change. The report provides case studies of successful green infrastructure projects across the United States, and a qualitative discussion on the multiple benefits.

Management Experiences and Trends for Water Reuse Implementation in Northern California

Author: Bischel et al., (2012)
Geography: Western U.S.
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: Water Reuse

Specific Benefits or Trade-offs: Demand reduction, Habitat and biodiversity, Land and environment, Regulatory compliance, Risk and Resilience, Supply augmentation, Water quality, Water Supply, Water supply reliability

Management Experiences and Trends for Water Reuse Implementation in Northern California examines a survey conducted in northern California on the drivers for water reuse. The surveys included questions on wastewater discharge requirements and water supply needs; local, regional, and state policy; institutional control; economic/financial incentives; ecological goals or requirements; influential stakeholders; and technological advancements. The major hindrances included economic/financial disincentives (i.e., capital costs for construction), perceptions and social attitudes, regulatory constraints, water quality impacts, user acceptance, institutional issues, technical issues, and uncertainty within future recycled water uses.

California Water Plan, Update 2009, Volume 2: Resource Management Strategies

Author: California Department of Water Resources (2009)
Geography: Western U.S.
Level of Detail: Decision support tool, Qualitative description

Availability: Publicly Available

Water Management Strategies: Agricultural efficiency, Agricultural land management, Brackish desalination, Centralized Stormwater Infrastructure, Centralized wastewater treatment, Delivery system efficiency, Desalination, Direct potable reuse, Drywells, Groundwater extraction, Groundwater Management, Groundwater recharge, Groundwater storage, Indirect potable reuse, Land Management, Recharge area protection, Reforestation and forest conservation, Riparian buffers, Seawater desalination, Spreading basins, Storm drains and pipes, Stream protection and restoration, Surface Water Storage, Urban indoor efficiency, Urban outdoor efficiency, Wastewater Treatment, Water Conservation and Efficiency, Water Reuse, Water Transfer, Wetland protection and restoration

Specific Benefits or Trade-offs: Demand reduction, Extreme events, Flooding, Habitat and biodiversity, Land and environment, People and Community, Recreation, Risk and Resilience, Supply augmentation, System resilience, Water quality, Water Supply, Water supply reliability

The California Water Plan presents a guide on water management strategies that can provide multiple benefits both regionally and statewide in California. The management strategies are organized by goals, such as reducing water demand, improving operational efficiency, or improving water quality, and the benefits are categorized under water supply, drought preparedness, water quality, operational flexibility, flood impacts, environmental benefits, energy benefits, recreation, and groundwater overdraft risk. The report also includes guidance on the quantitative analysis of multiple benefits for policymakers and water resource managers.

Central Valley Flood Protection Plan 2017 Update

Author: California Department of Water Resources (2017)
Geography: Western U.S.
Level of Detail: Decision support tool, Qualitative description

Availability: Publicly Available

Water Management Strategies: Land Management

Specific Benefits or Trade-offs: Aesthetics, Agriculture, Air quality, Ambient water quality, Carbon sequestration, Community resilience, Extreme events, Flood Control, Habitat and biodiversity, Health and safety, Land and environment, People and Community, Resource recovery, Risk and Resilience, Soil health, System resilience, Water quality, Water Supply, Water supply reliability

The Central Valley Flood Protection Plan asserts that institutional frameworks hinder implementation of multi-benefit actions and outlines a framework to facilitate design and construction of multi-benefit projects. The report organizes Design Within Reach (DWR) Flood Management programs with the flood management policy issues they address, as well as discusses multi-benefit improvements for ecosystem vitality for specific projects. It includes a qualitative discussion of multi-benefit projects, defining them as projects designed to reduce flood risk and enhance fish and wildlife habitat, as well as create additional public benefits such as sustaining agricultural production, improving water quality and water supply reliability, increasing groundwater recharge, supporting commercial fisheries, and providing public recreation and educational opportunities, or any combination thereof.

Review of IRWM Planning and Implementation in California

Author: California Department of Water Resources (2015)
Geography: Western U.S.
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: Centralized Stormwater Infrastructure, Desalination, Distributed Stormwater Infrastructure, Environmental Remediation, Groundwater Management, Land Management, Wastewater Treatment, Water Conservation and Efficiency, Water Reuse, Water Transfer

Specific Benefits or Trade-offs: Ambient water quality, Community resilience, Drinking water quality, Educational opportunity, Flood Control, Habitat and biodiversity, Land and environment, People and Community, Recreation, Risk and Resilience, Supply augmentation, System resilience, Water quality, Water Supply, Water supply reliability

Review of IRWM Planning and Implementation in California presents an assessment of Integrated Regional Water Management (IRWM) planning and implementation practices that supports California’s Department of Water Resources (DWR) Strategic Plan. DWR aims to work with regions in California to develop Integrated Regional Water Management Plans (IRWMPs) and prioritize proposals for funding that include multiple benefit projects.

Proposition 1 Stormwater Grant Program Guidelines

Author: California State Resources Water Quality Control Board (2015)
Geography: Western U.S.
Level of Detail: Decision support tool

Availability: Publicly Available

Water Management Strategies: Centralized Stormwater Infrastructure, Conservation design, Constructed stormwater wetlands, Detention basin, Distributed Stormwater Infrastructure, Embankment and horizontal levees, Flood Control, Infiltration basin, Infiltration or filtration, Low impact landscaping, Retention basin, Runoff conveyance, Runoff storage, Storm drains and pipes

Specific Benefits or Trade-offs: Air quality, Ambient water quality, Carbon sequestration, Demand reduction, Educational opportunity, Flooding, Habitat and biodiversity, In stream flows, Land and environment, Local economy, Peak flood volume, People and Community, Recreation, Risk and Resilience, Supply augmentation, Total flood volume, Water quality, Water Supply, Water supply reliability

Proposition 1 Stormwater Grant Program Guidelines, related to the Stormwater Grant Program (SWGP), establishes the process and criteria by which Proposition 1 funds are awarded in the state of California. The guidelines seek to encourage public agencies to develop multi-benefit stormwater management plans, as specified in the Stormwater Resource Planning Act (SB 985), that reframe stormwater projects, including dry-weather runoff as a water supply resource.

Adapting to Change: Utility Systems and Declining Flows

Author: California Urban Water Agencies (2017)
Geography: Western U.S.
Level of Detail: Qualitative description

Availability: Publicly Available

Water Management Strategies: Centralized Stormwater Infrastructure, Centralized wastewater treatment, Direct potable reuse, Flood Control, Groundwater Management, Groundwater recharge, On site nonpotable reuse, Storm drains and pipes, Urban and industrial nonpotable reuse, Urban indoor efficiency, Urban outdoor efficiency, Wastewater Treatment, Water Conservation and Efficiency, Water Reuse

Specific Benefits or Trade-offs: Ambient water quality, Demand reduction, Drinking water quality, Energy, Energy for wastewater, Extreme events, In stream flows, Land and environment, Regulatory compliance, Resource recovery, Risk and Resilience, System resilience, Water Supply, Water supply reliability

Adapting to Change: Utility Systems and Declining Flows explores the consequences of reduced indoor flows related to conservation on urban water supply systems in California. The report illustrates that demand management through water use efficiency can have many co-benefits including improved drought resilience, improved in-stream flows, reduced or deferred cost of infrastructure, and reduced energy costs; declining flows, however, can negatively impact water distribution, conveyance, wastewater treatment, and recycled water policy. Specific examples and details are presented within the report, including survey and interview data.

Water Storage Investment Program Technical Reference

Author: California Water Commission (2016)
Geography: Western U.S.
Level of Detail: Decision support tool, Economic valuation

Availability: Publicly Available

Water Management Strategies: Centralized Stormwater Infrastructure, Drywells, Flood Control, Groundwater extraction, Groundwater Management, Groundwater recharge, Groundwater storage, Infiltration basins, Spreading basins, Surface Water Storage

Specific Benefits or Trade-offs: Ambient water quality, Demand reduction, Drinking water quality, Energy production, Extreme events, Flooding, Habitat and biodiversity, In stream flows, Land and environment, Local economy, Peak flood volume, People and Community, Recreation, Regulatory compliance, Risk and Resilience, Supply augmentation, System resilience, Total flood volume, Water quality, Water Supply, Water supply reliability

Water Storage Investment Program Technical Reference details the methodology for quantifying the co-benefits or adverse impacts of water storage projects under California’s Water Storage Investment Program (WSIP). The report outlines methods for quantification of various co-benefits and adverse impacts, providing guidance on defining future site conditions, calculating physical changes, monetizing project benefits and costs, comparing benefits and costs, properly allocating costs to beneficiaries, determining cost-effectiveness and public-benefit ratio, and evaluating sources of uncertainty. Projects that quantify public benefits following these methodologies are eligible for California state bond funding to pay for the public benefits.