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ITEM:
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INFORMATIONAL
ITEMS/STAFF REPORT
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30.
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MONTHLY WATER SUPPLY
STATUS REPORT
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Meeting Date:
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June
20, 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 30-A shows the
water supply status for the Monterey Peninsula Water Resources System (MPWRS)
as of June 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
30-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 May 2011
totaled 0.97 inches
and brings the cumulative
rainfall total for WY 2011 to 23.44 inches, which is 111% of the long-term average through May of 21.09 inches.
Estimated unimpaired runoff during May
2011 totaled 5,779 acre-feet (AF) and brings the cumulative runoff
total for WY 2011 to 92,610 AF, which is 139% of the long-term average through May of 53,530 AF. Usable storage, which includes surface and
groundwater, was 31,130 AF,
or 98% of the long-term average
through May of 31,900 AF. This storage
equates to 83% of system
capacity. In addition, 452 adult steelhead were counted in the fish
ladder at San Clemente Dam for WY 2011 through May.
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 May, Cal-Am has
produced 7,496 AF from the Carmel River,
Seaside Basins, Sand City Desalination, and ASR
recovery, for customer use. This water
production is 623 AF or 7.7% less than the target specified
for Cal-Am’s production from the MPWRS for WY 2011 through May. A monthly breakdown of
Cal-Am’s production from the Carmel River and the Seaside Groundwater Basin
Subareas for WY 2011 through May is
included as Exhibit 30-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 May, 1,117 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
30-A Water Supply Status: June
1, 2011
30-B Monthly Cal-Am Diversions from Carmel
River and Seaside Groundwater Basins:
Water Year 2011