This week we experienced an unusual and impressive two-day rain event for late June, receiving 1.69 inches total at Lake Lagunitas over June 24 and June 25. At 1.57 inches, June 25 was the wettest day of 2013 so far.
Total rainfall for June 2013 is 1.72 inches, well above the monthly average of 0.43 inches. Well-above-average June rains occur about once every 10 years, most recently in 2011 when nearly 3.5 inches of rain was recorded. Going back through recent records, 1992 also was a wet June (1.87 inches) and, like 2013, was a below-average rainfall year. Record rainfall for June was 5.24 inches in 1897.
Here are the current water statistics:
Reservoir Levels: As of June 25, reservoir storage is 65,081 acre-feet,* or 82 percent of capacity. The average for this date is 66,903 acre-feet, or 84 percent of capacity. Total capacity is 79,566 acre-feet.
Rainfall: Rainfall this year (July 1, 2012 to June 25, 2013) is 40.20 inches. Last year for the same period we had 40.51 inches; average is 52.59 inches.
Water Use: Water use for the week ending June 25 averaged 30.5 million gallons per day, compared to 31.2 million gallons per day for the same week last year.
Supply Source: Last week we averaged 25.1 million gallons per day from our reservoirs and 7.0 million gallons per day from the Russian River.
Creek Releases: During the month of May 2013 MMWD released 344 million gallons, or a total of 1,055 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.