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ITEM:
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INFORMATION
ITEMS/STAFF REPORT
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26.
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MONTHLY WATER SUPPLY
STATUS REPORT
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Meeting Date:
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May 16, 2011
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Budgeted:
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N/A
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From:
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Darby Fuerst,
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Program/
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N/A
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General Manager
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Line Item No.:
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Prepared By:
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Jonathan Lear
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Cost Estimate:
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N/A
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General Counsel Review: N/A
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Committee
Recommendation: N/A
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CEQA Compliance: N/A
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Exhibit 26-A shows the
water supply status for the Monterey Peninsula Water Resources System (MPWRS)
as of May 1, 2011. This system includes the surface water
resources in the Carmel River Basin, the groundwater resources in the Carmel
Valley Alluvial Aquifer and the Seaside
Groundwater Basin.
Exhibit 26-B
focuses on four factors: rainfall, runoff, storage, and steelhead. The report is limited to the water year that
began October 1, 2010 and will end September 30, 2011 (WY 2011). The rainfall and
streamflow values are based on measurements in the upper Carmel River Basin
at San Clemente Dam. This site was
selected because of its location above storage facilities and the availability
of long-term rainfall and runoff records.
Water Supply Status: As
shown, rainfall during April 2011 totaled
0.37 inches
and brings the cumulative
rainfall total for WY 2011 to 22.47 inches, which is 109% of the long-term average through April of 20.65 inches.
Estimated unimpaired runoff during April
2011 totaled 14,488 acre-feet (AF) and brings the cumulative runoff
total for WY 2011 to 86,831 AF, which is 138% of the long-term average through April of 62,768 AF. Usable storage, which includes surface and
groundwater, was 31,550 AF,
or 98% of the long-term average through
April of 32,330 AF. This storage
equates to 84% of system
capacity. In addition, 451 adult steelhead were counted in the fish
ladder at San Clemente Dam for WY 2011 through April.
Production Compliance: Under
State Water Resources Control Board (SWRCB) Cease and Desist Order No. 2009-0060,
California American Water (Cal-Am) is allowed to produce no more than 10,429 AF
of water from the Carmel
River in WY 2011. In addition, under the Seaside Basin
Decision, Cal-Am is allowed to produce 3,202 AF of water from the Coastal
Subareas and 246 AF from the Laguna Seca Subarea of the Seaside Groundwater
Basin in WY 2011, as modified
by the Seaside Basin Watermaster in December 2010. Altogether, Cal-Am is currently
allowed to produce 13,631 AF from Carmel
River and Seaside Coastal sources for
customers in its main Monterey system and 246 AF
from the Laguna Seca Subarea for customers in its Laguna Seca subsystems, i.e.,
Ryan Ranch, Hidden Hills, and Bishop Systems (not adjusted for ASR recovery or Sand City
desalination plant production). For WY
2011 through April, Cal-Am has produced
6,304 AF from the Carmel River,
Seaside Basins, Sand City Desalination, and ASR
recovery, for customer use. This water
production is 510 AF or 7.5% less than the target specified
for Cal-Am’s production from the MPWRS for WY 2011 through April. A monthly breakdown
of Cal-Am’s production from the Carmel River and the Seaside Groundwater Basin
Subareas for WY 2011 through April
is included as Exhibit 26-B. Cal-Am’s production from the Carmel River Basin
is reduced for diversions that are made for injection into the Seaside Basin;
Cal-Am’s “native” production from the Seaside Basin
is reduced for the recovery of injected water. For WY 2011 through April, 919 AF of groundwater have been diverted from the Carmel River
aquifer for injection into the Seaside
Groundwater Basin;
1,111 AF have been recovered for
customer use.
EXHIBITS
26-A Water Supply Status: May
1, 2011
26-B Monthly Cal-Am Diversions from Carmel
River and Seaside Groundwater Basins:
Water Year 2011
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