C150379 Feasibility Study

• Contract/PO #: C150379
• Contractor Name: Wadley Farms Filing No. 3 Homeowner's Association
• Contract Type: Loan
• Water District: 7
• County: Adams
• Loan Projects - Doc Type: Feasibility Study

Obviously, a complete prohibition on irrigation would have extraordinarily negative
effects on the Wadley farms No. 3 homeowners. The neighborhood would suffer a
massive and permanent loss of landscaping, including mature trees, just as occurred in
2002. A complete dry-up of the reservoirs would result in fish -kill, odor problems..
aesthetic problems, and an elimination of fire- fighting water supplies.
If it is assumed that the HOA will restrict irrigation use to an amount no greater than
needed in an average year (42.2 acre -feet) whenever necessary, the amount needed to
fully meet water demands would range from 95.0 acre -feet to 121.0 acre -feet depending
on reservoir evaporation amounts. With the addition of seepage losses, the HOA
typically needs from about 108 to 134 acre -feet in any given year to satisfy the Wadley
Farms No. 3 water needs in a reasonable manner that includes restricted use in times of
shortage. This amount is compared to the number of years that the current water supply
for the HOA falls below this level in Figure 10. This figure shows that in 30 to 60% of
years, the HOA has insufficient water deliveries to adequately meet demands even when
implementing reasonable water use restrictions.
Figure 10: Reliability of Current Wadley Farms No. 3 Water Supplies
d
200
M
-0 180
M
d
M 160
0
? 140
E
L
LL 120
a
a,
:5 100
M
3
0 80
M
60
M 40
d
a,
20
L
U
M 0
Percent of Years with Water Availability Less Than Indicated Value with
ownership of 3 FHL Shares
1% 10% 20% 30% 40% 50% 60% 70% 80% 90%
% of years
As shown in Table 7, sixty percent of the years have water deliveries less than 132 acre -
feet and thirty percent of the years have less than 110 acre -feet available based on
ownership of three FHL shares. A drought year of a severity seen once in 10 years on
Wadley Farms No. 3 Water Supply CWCB Loan Feasibility Study Page 20