4 Multi-Benefit Resources

Green Infrastructure Opportunities and Barriers in the Greater Los Angeles Region

Author: U.S. EPA (2013)
Geography: Western U.S.
Level of Detail: Qualitative description

Water Management Strategies: Centralized Stormwater Infrastructure, Constructed stormwater wetlands, Detention basins, Distributed Stormwater Infrastructure, Drywells, Flood Control, Groundwater extraction, Groundwater Management, Groundwater recharge, Groundwater storage, Infiltration basins, Infiltration or filtration, Runoff conveyance, Runoff storage

Specific Benefits or Trade-offs: Aesthetics, Air quality, Carbon sequestration, Demand reduction, Educational opportunity, Habitat and biodiversity, Health and safety, Land and environment, Peak flood volume, People and Community, Recreation, Total flood volume, Urban heat island, Water Supply

Green Infrastructure Opportunities and Barriers in the Greater Los Angeles Region analyzes the regulatory barriers to installing green infrastructure in Los Angeles. The types of green infrastructure projects discussed in the report include bioretention cells, bioretention strips/swales, infiltration basins/swales/trenches, planter boxes, constructed wetlands, rainwater capture, permeable pavement, and drywells. The report defines the regulatory landscape for green infrastructure in California, identifies potential for fulfilling multiple regulations and requirements through green infrastructure projects, and lastly, examines the regulatory barriers to green infrastructure implementation.

Rainwater as a Resource: A Report on Three Sites Demonstrating Sustainable Stormwater Management

Author: TreePeople (2007)
Geography: Western U.S.
Level of Detail: Case study, Quantitative benefits

Availability: Publicly Available

Water Management Strategies: Centralized Stormwater Infrastructure, Distributed Stormwater Infrastructure, Drywells, Flood Control, Groundwater Management, Groundwater recharge, Infiltration basins, Infiltration or filtration, Low impact landscaping, Runoff conveyance, Runoff storage

Specific Benefits or Trade-offs: Air quality, Ambient water quality, Carbon sequestration, Educational opportunity, Energy, Energy for wastewater, Flooding, Health and safety, Land and environment, People and Community, Recreation, Secondary energy demand, Supply augmentation, Urban heat island, Water quality, Water Supply

Rainwater as a Resource: A Report on Three Sites Demonstrating Sustainable Stormwater Management (2007) presents three case studies for stormwater management: (1) single-family, parcel sized greening in South Los Angeles, CA, (2) campus greening at Hillery T. Broadous Elementary School in Pacoima, CA, and (3) campus greening at Open Charter Magnet Elementary School in Westchester, CA. The report includes costs and quantified benefits for tree benefits (tree canopy, carbon storage, carbon sequestration, energy savings), stormwater benefits (runoff reduction, avoided storage), and air pollution benefits (ozone, SO2, NO2, PM10, and CO removal). The report also includes a discussion of additional non-quantified benefits including student health and safety, green waste reuse, and green recreation space.

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.

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.