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ITEM:
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INFORMATION
ITEMS/STAFF REPORT
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20.
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MONTHLY WATER SUPPLY
STATUS REPORT
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Meeting Date:
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October 17, 2011
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Budgeted:
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N/A
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From:
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David J. Stoldt,
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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 20-A shows the
water supply status for the Monterey Peninsula Water Resources System (MPWRS)
as of September 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 20-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 September 2011
totaled 0.0 inches
and brings the cumulative
rainfall total for WY 2011 to 24.73 inches, which is 115% of the long-term average through September of 21.45 inches.
Estimated unimpaired runoff during September
2011 totaled 632 acre-feet (AF) and brings the cumulative runoff
total for WY 2011 to 101,769 AF, which is 147% of the long-term average through September of 69,199 AF. Usable storage, which includes surface and
groundwater, was 29,880 AF,
or 106% of the long-term average through
September of 28,180 AF. This storage
equates to 82% of system
capacity. In addition, 452 adult steelhead were counted in the fish
ladder at San Clemente Dam for WY 2011.
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 September, Cal-Am has produced
12,253 AF from the Carmel River, Seaside
Basins, Sand City Desalination, and ASR recovery, for customer use. This water production is 1,624 AF or 11.7%
less than the target specified for Cal-Am’s production from the
MPWRS for WY 2011 through September.
A monthly breakdown of Cal-Am’s
production from the Carmel River and the Seaside Groundwater Basin Subareas for
WY 2011 through September is
included as Exhibit 20-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 September, 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
20-A Water Supply Status: October
1, 2011
20-B Monthly Cal-Am Diversions from Carmel
River and Seaside Groundwater Basins:
Water Year 2011
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