California Water Science Center (CAWSC) - Yucaipa Valley Optimal Basin Management (OBM)

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Yucaipa Valley Hydrogeology

Welcome to the U.S. Geological Survey (USGS) Yucaipa Valley Hydrogeology website. This site provides hydrologic data collected or compiled by the USGS in the Yucaipa area; some additional data may be available from the USGS database National Water Information System (NWIS).

Project Chief: Greg Mendez
Phone: 619-225-6176
Email: gomendez@usgs.gov

Water-Quality Model

Water-quality models include both lumped and transport models. The lumped models assume all chemical constituents are lumped together, and often are used to identify equilibrium conditions. The transport models assume that water is transported through a medium, like an aquifer, and chemical changes occur along that flow path. Transport models can be used to test the reasonableness of a geologic framework or groundwater flow model.