PROJ01838

• Contract/PO #: C153605
• Contractor Name: U. S. Bureau of Reclamation
• Water District: 0
• County: Mesa
• Loan Projects - Doc Type: Feasibility Study

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OWENS CREEK RESERVOIR
1992 APPRAISAL LEVEL STUDY
SUMMARY FACT SHEET

CAPACITY ALLOCATIONS:
Active Conservation:
Inactive:
Dead:
Total Capacity

22,010 ac-ft
3,000 ac-ft
230 ac-ft
25,240 ac-ft

SPILLWAY 'DATA: I
1992 STUDY
Probable Maximum Flood
Spillway Discharge:
Spillway Crest Length
Maximum Water Surface Elevation

1967 STUDY
Design Flood
spillway Discharge
Spillway Crest Length
Maximum Water Surface Elevation

EMBANKMENT:
MaxiIl\.um Height:
Crest Length:
Crest Width:

165 ft
1,700 ft
30 ft

Fill Volumes
Earthfill:
Sand and gravel:
Cobble fill:
Riprap:
other:
Total Volume:

1,520,000 cy
50,000 cy
246,000 cy
34,000 cy
46.000 Cy
1,896,000 cy

OPERATION / YIELD:
Study Period:
Minimum End Of Month (EOM)
Total Firm Yield:
Min. EOM omitting '56-'57

39, 900 cfs~
13 , 94 0 c f s "
100 ft
8308.8

6,300 cfs
2,000 cfs
25 ft
8305

1937-1980
3,200 ac-ft (reached in '57 only)
10,200 ac-ft
7,400 ac-ft (reached in '7B)

Firm Yield of a 10,000 ac-ft reservoir is 6,000 ac~ft.*
Firm Yield of a 20,000ac-ft reservoir is 9,200 ac-ft.
Firm Yield of a 30,400 ac-ft reservoir is 11,200 ac-ft.

* Minimum EOM = 1,500 ac-ft

COST:
Embankment Dam w/ 4 ft Raise
Spillway
Outlet Works
Mobilization
Subtotal

Unlisted Items 10% +/-
continqencies 20% +/-
TOTAL CONTRACT COSTS

Non-contract costs 42%
TOTAL COST

13,740,150
5,657,875
1,957,450
1.050.000
22,405,475

2,594,525
5.000.000
$30,000,000

$12.600.000
$42,600,000