Today marks the end of the current rainfall year, which started July 1, 2010. This year we saw 70.16 inches fall at Lake Lagunitas on the Mt. Tamalpais Watershed. This figure is approximately one third higher than the annual average of 52.63 inches.
The above-average number is due to this year’s unusually wet spring. Even in June we had measurable rain, receiving 3.47 inches this month. Average for June is just 0.43 inches.
As a result of the wet spring, our reservoirs are also above average, with water levels currently at 96 percent of capacity. Average for this time of year is about 82 percent.
Not surprisingly, water consumption has been below average for the last few months. At the same time, we continue to release water into Lagunitas and Walker creeks in west Marin per our agreement with the State of California to maintain adequate flows for the fishery. In May, for example, we released one gallon of water into the creeks for every three gallons consumed by customers, so 25 percent of the reservoir water used last month went to the environment.
Current rainfall and reservoir figures can be found on our website.