MMWD’s rainfall data is collected on a July 1 – June 30 basis, rather than according to the calendar year. Not surprisingly for mid-summer, rainfall year to date is zero inches.
We continue to operate the water system to optimize our supply in response to this year’s dry spring. We are carefully balancing the use of imported Russian River water with our reservoir water supply to preserve our reservoir supplies to the degree possible. We also are using more water from Nicasio Reservoir in West Marin, allowing us to save more water in our reservoirs on Mt. Tamalpais.
Here are the current water statistics:
Reservoir Levels: As of July 21, reservoir storage is 61,356 acre-feet,* or 77 percent of capacity. The average for this date is 63,288 acre-feet, or 80 percent of capacity. Total capacity is 79,566 acre-feet.
Rainfall: No rainfall this year to date (July 1 – July 21, 2013).
Water Use: Water use for the week ending July 21 averaged 31.0 million gallons per day, compared to 31.6 million gallons per day for the same week last year.
Supply Source: Last week we averaged 25.6 million gallons per day from our reservoirs and 5.4 million gallons per day from the Russian River.
Creek Releases: During the month of June 2013 MMWD released 297 million gallons, or a total of 912 acre-feet, into Lagunitas and Walker creeks in west Marin. We release water throughout the year to maintain adequate flows for the fishery per our agreements with the State of California.
Current water use and reservoir figures can be found on our homepage.
*One acre-foot is 325,851 gallons.