Maps




GIS

Interactive Nitrate Concentration Map Interactive TDS Concentration Map
View nitrate as nitrogen objectives and ambient concentrations in groundwater management zones from the Triennial Ambient Groundwater Report Also Download the GIS layer. View TDS objectives and ambient concentrations in groundwater management zones from the Triennial Ambient Groundwater Report. Also download the GIS layer.
Interactive Water Retailers Map
View the boundaries of nearly 90 water retailers in the watershed. Also download the GIS layer.

Download Data

SAWPA has a variety of data sets available for download through our data and map server (registration is required)

GIS Data  Surface Water Data
GIS Data Surface Water Data 
GIS layers including hydrologic features, water infrastructure and agency boundaries.  Surface water quality data compiled for the Annual Report of Santa Ana River Water Quality.
TMDL Data
TMDL Data
Water quality data compiled for the Big Bear, Canyon Lake, Lake Elsinore, Middle Santa Ana River, and San Jacinto Stormwater TMDLs.