This division is responsible for the funding, design environmental preservation and construction of the San Sevaine Creek Water Project. The majority of the project is programmed as a Bureau of Reclamation "Small Project" under PL 84-984 with additional local funding. The project will consist of a 130 acre fenced wildlife enhancement area in the Etiwanda Creek alluvial fan, six debris basins, four large attenuation basins, water conservation facilities, recreational amenities and connecting levees and channels extending 15 miles. The project will help reduce flooding conditions from the San Sevaine and Etiwanda creeks in a drainage area of 51 square miles including sections in the cities of Fontana, Rancho Cucamonga and Ontario, unincorporated areas of San Bernardino County and areas in Riverside County.
There will be an average of approximately 25,000 acre feet per year of conservable runoff from the Etiwanda and San Sevaine Creek's tributaries in the project area. This water conservation aspect will benefit approximately 14,000 acres of agricultural preserves in the Chino Ground Water Basin, which surrounds the project area. Withdrawals from the basin have averaged over 150,000 acre feet per year for the past ten years. The Chino Basin Watermaster has inaugurated a program of groundwater replenishment by purchasing imported water. Because the water percolation basins and runoff storage and conservation basins proposed in this project overlie the Chino Groundwater Basin, the 25,000 acre feet of conservable runoff in the form of groundwater percolation will aid in recharging the underground basin that is in constant overdraft.
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