EXHIBIT 22-C
Quarterly Water Supply Strategy
and Budget Report
California American Water
Water Distribution Systems: July
– September 2009
1. Management Objectives
The
Monterey Peninsula Water Management District (District) desires to maximize the
long-term production potential and protect the environmental quality of the Carmel River
and Seaside Groundwater Basins. In addition, the District desires to maximize
the amount of water that can be diverted from the Carmel
River Basin and injected into the Seaside Groundwater
Basin while complying with the
instream flow requirements recommended by the National Marine Fisheries Service
(NMFS) to protect the Carmel
River steelhead
population. Similarly, during the
low-flow season, the District desires to recover some or all of water that was
previously injected into the Seaside
Groundwater Basin. By meeting customer demand with this
recovered water, California American Water (CAW) will be able to reduce its
diversion from its Carmel
River sources during the
low-flow season. To accomplish these
goals, a water supply strategy and budget for production within CAW’s Main and Laguna Seca Subarea water distribution systems
is reviewed quarterly to determine the optimal strategy for operations, given
the current hydrologic and system conditions.
2. Quarterly Water Supply Strategy: July - September 2009
On
June 8, 2009, staff from the District, CAW, California Department of Fish and
Game (CDFG), and National Marine Fisheries Service (NMFS) met and discussed the
proposed water supply strategy and related topics for the remainder of June 2009
and the July-September 2009 period. Currently,
flow in the Carmel
River is unregulated,
with San Clemente Reservoir and Los Padres Reservoir full and spilling. Flow in the Carmel River
is continuous from the headwaters to the ocean, with approximately 15 cubic
feet per second (cfs) flowing to the ocean on June 8, 2009. Rainfall during Water Year 2009 to date at
San Clemente Dam in the upper watershed has totaled 18.1 inches or 86% of the
long-term average at this site. Further,
unimpaired runoff at San Clemente Dam for WY 2009 to date has totaled
approximately 44,400 AF or about 67% of the long-term average for this
site.
Carmel River Basin Given these conditions, it was agreed that “
below normal” inflows would be used to assess CAW’s operations during
the July through September 2009 period. To meet customer demand, CAW would operate
its wells in the Lower
Carmel Valley
in a downstream-to-upstream sequence, as needed. For the quarterly budget, it was agreed that
CAW would produce approximately 31, 31, and 30 AF of groundwater from its wells
in the Upper Carmel Valley
during July, August, and September 2009, respectively.
In addition, it was agreed that CAW would produce
approximately 970, 970, and 830 AF of groundwater from its wells in the Lower Carmel
Valley during July,
August, and September 2009, respectively.
Table 1 shows actual and projected monthly
releases and diversions from Los Padres and San Clemente Reservoirs for the
January through December 2009 period.
Seaside Groundwater
Basin It was also agreed that CAW would produce
500 AF of native groundwater each month from the Coastal Subareas of the Seaside Basin, respectively, during this
period.
In addition, the proposed budget includes recovery of 182 AF of
non-native groundwater that was injected into the Seaside Groundwater
Basin during the December
2008 – May 2009 injection season.
Approximately 60 AF per month will be recovered from the Seaside Basin
and provided to CAW for customer service during the July through September 2009
period. This will allow CAW to reduce
its diversions from the Carmel
River during this
period.
It
was also agreed that CAW would produce 33, 33, and 31 AF of groundwater from
its wells in the Laguna Seca Subarea of the Seaside Basin
for customers in the Ryan Ranch, Bishop, and Hidden Hills systems during July,
August, and September 2009, respectively.
It is recognized that, based on recent historical use, CAW’s actual
production from the Laguna Seca Subarea during this period will likely exceed
the proposed monthly targets, which are based on CAW’s allocation specified in
the Seaside Basin Adjudication Decision. For example, in the July through
September 2009 period, CAW produced 60, 59, and 57 AF from the Laguna Seca
Subarea to meet customer demand in the Ryan Ranch, Bishop, and Hidden Hills
systems. In this context, the production
targets represent the maximum monthly production that should occur so that CAW
remains within its adjudicated allocation for the Laguna Seca Subarea. Under the amended Seaside basin Decision, CAW is allowed to use
production savings in the Coastal Subareas to offset over-production in the
Laguna Seca Subarea.
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