Water Supply Status

March 1, 2012

Factor

Water Year

2012

Oct 11-Feb 12

Average

To Date

Percent of

Average

Water Year

2011

Oct 10-Feb 11

Rainfall

(Inches)

7.48

15.65

48%

15.72

Runoff

(Acre-Feet)

7,394

36,951

20%

34,431

Storage

(Acre-Feet)

30,290

31,260

97%

31,460

Steelhead

(Adults)

(Juveniles)

180

---

18%

---

155

Notes:

1. Rainfall and runoff estimates are based on measurements at San Clemente Dam. Annual rainfall and runoff at San Clemente Dam average 21.4 inches and 69,200 acre-feet, respectively. Annual values are based on the water year that runs from October 1 to September 30 of the following calendar year. The rainfall and runoff averages at the San Clemente Dam site are based on records for the 1922-2011 and 1902-2011 periods, respectively.

2. The rainfall and runoff totals are based on measurements through February 2012.

3. Storage estimates refer to usable storage in the Monterey Peninsula Water Resources System (MPWRS) that includes surface water in Los Padres and San Clemente Reservoirs and ground water in the Carmel Valley Alluvial Aquifer and in the Coastal Subareas of the Seaside Groundwater Basin. The storage averages are end-of-month values and are based on records for the 1989-2011 period. The storage estimates are end-of-month values for February 2012.

4. The maximum usable storage capacity for the MPWRS at this time, with the flashboards lowered at San Clemente Dam, is 37,662 acre-feet. The flashboards were last lowered on August 27, 1996, and have not been raised since that time.

5. The adult steelhead count refers to the number of sea-run and freshwater adults (> 15 inches) that have migrated up the fish ladder at San Clemente Dam in Water Year 2012. The juvenile count refers to the number of juveniles that were rescued by District staff from drying reaches of the Carmel River and its tributaries in Water Year 2012. The adult count average is based on records for the 1994-2011 period.

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