Runoff and Pumping

LADWP uses the numerous gauging stations on creeks and rivers in the Owens Valley watershed to measure the amount of runoff from the Sierra Nevada as part of its operation of the Los Angeles Aqueduct system.  Each year using information from rain gauges, snow measurements and creek flow measurements, LADWP forecasts the amount of runoff to assist its annual planning.

Owens Valley Runoff – 2017 Forecast

A comparison of the forecast and measured runoff is included in the Inyo County Annual Report.

Historical Owens Valley Runoff and Pumping

TABLE: Historical Owens Valley Runoff and Pumping 1935-2016.

Below – Water volume is presented in acre-feet and computed for each runoff year April 1 – March 31. The data set covers 1934 to the last completed runoff year, 2014 (1 Apr 2014 – 31 Mar 2015). The 2015/2016 runoff year will be updated in April 2016.

Below – Data used in the above interactive plot of historical pumping and runoff.