Why isn’t Los Vaqueros Reservoir as full as other reservoirs? With the unusually heavy rains this winter, we captured some water as it fell directly on the reservoir, but the primary source for Los Vaqueros Reservoir is water pumped in from the Delta! Los Vaqueros operates according to permits issued by the state and federal governments. We are currently slowly but steadily filling Los Vaqueros at the maximum rate of pumping, according to plan. Later this year, Los Vaqueros water will be slowly released into the Contra Costa Canal to blend with our other supplies and maintain high water quality throughout the year. Slow to fill, slow to release! Learn more about this important facility at our 25th Anniversary Celebration on Saturday, May 20.