To aid downstream agencies and as required by state law, Valley Water has developed inundation maps that estimate what areas could be flooded in the unlikely event of an uncontrolled release of water from the Anderson Reservoir.
Each map shows an area shaded in dark blue could be inundated in normal weather conditions with normal flows in streams and a full reservoir. Additionally, a lighter shade of blue indicates additional areas that could be flooded if an uncontrolled release were to occur during a major storm, when stream flows downstream and upstream are already very high and the pool in the reservoir is also well above the spillway crest. Technical details about these maps are described on the Cover Page. The cover page also contains the legend showing the areas covered in each of the 10 sheets listed below.
Additionally, the inundation maps are accompanied by a table that shows estimates of the time and depth of a water release depending on the two scenarios noted above, the distance from the reservoir, and how water flows north to San Francisco Bay or south to Monterey Bay.
Projects:
*Reservoir storage values have been updated to reflect recent survey results.