Past Projects
Lake Elsinore/San Jacinto Watersheds Authority
As part of the Safe Drinking Water, Clean Water, Watershed Protection, and Flood Protection Bond Act of 2000 (Proposition 13) Funding, SAWPA was named as one of the members of a newly formed Joint Powers Authority (JPA) called the Lake Elsinore and San Jacinto Watersheds Authority (LESJWA). Members of LESJWA include Elsinore Valley Municipal Water District, the City of Lake Elsinore, County of Riverside, the City of Canyon Lake and SAWPA. read more...
Riverside Basin Groundwater Modeling
The Riverside Groundwater Basin is a large alluvial fill basin that is bounded by major faults and topographic barriers. Recharge to the basin occurs by the underflow from basins to the north, contributions from the Santa Ana River, and from percolation of surface water runoff from the surrounding uplands, in particular the Box Spring Mountains to the east. The City of Riverside currently produces about 18,000 acre-feet per year (ac-ft/yr) of water from the southern portion of the Riverside Basin and is planning to increase production up to a total of 45,000 ac-ft/yr in the future. To address the issues associated with increasing groundwater production in the southern portion of the Riverside Basin, SAWPA is assisting the City of Riverside in developing a groundwater flow modeling study.
![]()
Southern California Water Recycling Initiative
This effort is associated with the Southern California Comprehensive Water Reclamation and Reuse Study. This cooperative effort is a partnership of the following agencies: the U.S. Bureau of Reclamation, the California Department of Water Resources, Central Basin and West Basin Municipal Water Districts, City of Los Angeles, City of San Diego, Metropolitan Water District of Southern California, San Diego County Water Authority, SAWPA, and South Orange County Reclamation Authority. read more...
![]()
TIN/TDS Task Force
On December 19, 1995, a Task Force, composed of approximately 20 water, wastewater, and groundwater agencies in the Santa Ana Watershed, was formed to evaluate the impact of total inorganic nitrogen (TIN) and total dissolved solids (TDS) on water resources in the Santa Ana River Watershed. At that time, the Task Force established agreements between SAWPA and two consultants, Risk Sciences and Wildermuth Environmental Inc., to perform the consulting services for the Study . A separate agreement was formed between SAWPA and the State Water Resources Control Board (SWRCB) to obtain the Santa Ana Region RWQCB staff support in an advisory role. read more...