Stream Reach Assessment Tool is an online tool used to assess surface water quality within the Delaware River watershed. Through the integration of a wide range of datasets, an interactive water quality map was developed that depicts interactions between the rivers and streams within the Delaware River watershed. The tool provides information on 1) mean annual pollutant load (i.e., total nitrogen, total phosphorus, total suspended sediment, 2) mean annual in-stream concentration for each of the pollutants considered, 3) location and impact of point sources, and 4) general evaluations of the landscape features. The goal of the tool is to provide information on the effectiveness of land management practices.