More than an inch of rain fell on the Mt. Tamalpais Watershed on September 21, just one day before the official start of fall. That single day of heavy rain brought this year’s total rainfall to 1.08 inches, which is above average. Let’s hope it’s the start of a trend, although typically we don’t receive significant rainfall until November.
Here are the current water statistics:
Reservoir Levels: As of September 22, reservoir storage is 54,088 acre-feet,* or 68 percent of capacity. The average for this date is 55,036 acre-feet, or 69 percent of capacity. Total capacity is 79,566 acre-feet.
Rainfall: Rainfall this fiscal year to mid-September (July 1-September 22, 2013) is 1.08 inches. Average for the same period is 0.54 inches.
Water Use: Water use for the week ending September 22 averaged 29.3 million gallons per day, compared to 29.7 million gallons per day for the same week last year.
Supply Source: Last week we averaged 23.6 million gallons per day from our reservoirs and 5.7 million gallons per day from the Russian River.
Creek Releases: During the month of August 2013 MMWD released 266 million gallons, or a total of 817 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.
Water use and reservoir figures can be found on our homepage.
*One acre-foot is 325,851 gallons.