(Fresno, CA – June 15, 2009) There seems to be some confusion regarding
the water supply shortage we are facing this year in the Westlands Water
District. As shown in the attached chart (unable to copy from .pdf file
- KBB), we expect to have 64% of our average water supply in 2009.
Over the past 20 years, Westlands has imported an average of 750,000
acre feet of water from the Central Valley Project each year. This year,
with our current allocation of 10%, we are on track to import 119,000
acre feet, which is 16% of our average over the past 20 years. Even if
we include our anticipated supplemental water supply of 135,000 acre
feet, the district will still receive only 36% of our average imported
water supply.
We provided these figures to the Department of Water Resources (DWR).
But in a subsequent letter to Senator Feinstein, DWR increased the
amount attributed to groundwater, estimating that WWD will pump
approximately 460,000 acre feet of groundwater this year.
We do not know at this point how much water Westlands farmers will pump
in 2009. It is certainly true, however, that this will be the third
consecutive year that Westlands will experience increased groundwater
pumping. Including this year, over the past three years district farmers
will have pumped over 1.2 million acre-feet of ground water.
Pumping at this high level cannot be sustained for long. Nor can
groundwater be considered a reliable alternative to imported water from
the CVP.
The lack of imported water can be overcome short term through the use of
ground water. Indeed, one of the most important reasons why Congress
authorized the San Luis Unit of the Central Valley Project in 1960 was
to avoid the pumping of groundwater in excess of the safe yield of the
groundwater basin as a source or irrigation water for the area now
served by Westlands.
Pumping large volumes exceeds the capacity of groundwater resources to
recover. This leads to overdraft, damage to the soil and reduced
productivity. It also increases the risk of catastrophic land subsidence
which can damage homes and businesses, highways, and the California
Aqueduct.
On the other hand, every acre foot of imported water we can bring into
the district means one less acre foot of groundwater that will have to
be pumped.
Contact:
Westlands Water District
Sarah Woolf , 559-341-0174