San Juan Bay
Loading Model
Type: Condition
of habitat and sources affecting habitat (i.e., the condition or functionality
of the habitat) and stressors affecting habitat (i.e., which sources
have contributed to its degradation and whether they are direct or indirect
factors).
Category: Submerged, Intertidal, Wetland, and Upland
Cost: $470,000
Description: The USEPA Better Assessment Science Integrating Point and
Nonpoint Sources (BASINS) model, version 2.0, was used to estimate nonpoint
source loads for 17 water quality constituents plus runoff flow rates in the
San Juan Bay Estuary watershed.
Outcome: Due to significant data limitations, the model was not sufficiently
well calibrated to accurately predict in-stream concentrations of water quality
constituents. The report concluded that the model can be used as a tool to compare
the relative magnitude of nonpoint source loads between subbasins in the SJBE
watershed, but not to predict specific mass loadings rates.
Contact: Mr. José Juan Terrasa-Soler, CSA Group, Inc., jterrasa@csagroup.com
Citation: CSA Group, Inc. and Roy F. Weston, Inc., 2000. Point and
Nonpoint Source Pollutant Loading Study of the San Juan Bay Estuarine System,
Puerto Rico. Prepared for the San Juan Bay Estuary Program.
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