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Reservoirs
Marin's Primary Source of Water
MMWD owns seven reservoirs that are the source of 75 percent of the water we use each year. These five reservoirs are on the Mt. Tamalpais Watershed: Phoenix, Lagunitas, Bon Tempe, Alpine and Kent. The other two, Nicasio and Soulajule, are in the grassy hills of West Marin.
Reservoir Capacities
| Reservoir |
Capacity
in Acre Feet (1)
|
% of Total
Capacity
|
Year Built
|
| Lagunitas |
350
|
0.4
|
1872
|
| Phoenix |
411
|
0.5
|
1905
|
| Alpine |
8,891
|
11.2
|
1918 (2)
|
| Bon Tempe |
4,017
|
5.1
|
1948
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| Kent |
32,895
|
41.3
|
1953 (3)
|
| Nicasio |
22,430
|
28.2
|
1960
|
| Soulajule |
10,572
|
13.3
|
1979
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| TOTAL |
79,566
|
100
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1 - One acre foot is 325,851 gallons, enough water to cover one acre (about the size of a football field) to a depth of one foot.
2 - Enlarged in 1924 and 1941.
3 - Enlarged in 1982.
For current reservoir storage levels, select the most recent PDF or Microsoft® Word document below. (Click here for archives of past reports.)
Call 415-945-1533 for a recorded message of our weekly rainfall and reservoir storage information.
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