Castro Reservoir, located in Malheur County, Oregon, is a gravity dam constructed in 1982 by the Bureau of Land Management for water supply purposes.
Wind
Humidity
The reservoir has a maximum storage capacity of 107 acre-feet and a normal storage capacity of 69 acre-feet, serving as a vital source of water for the surrounding area. With a surface area of 12.6 square acres, the reservoir is fed by Spring Branch Creek and has a maximum discharge of 5295 cubic feet per second.
The dam stands at a hydraulic height of 19 feet and a structural height of 22 feet, with a length of 400 feet. The spillway, which is uncontrolled, is 40 feet wide. Despite being classified as having a low hazard potential, the reservoir is subject to moderate risk, with a risk assessment rating of 3. The last inspection of the dam was conducted in September 2018, with an inspection frequency of every 5 years. Overall, Castro Reservoir plays a crucial role in water resource management in the region, providing essential water supply services while maintaining a relatively low hazard potential.
Year Completed |
1982 |
Dam Length |
400 |
River Or Stream |
SPRING BRANCH CREEK |
Primary Dam Type |
Gravity |
Surface Area |
12.6 |
Hydraulic Height |
19 |
Nid Storage |
107 |
Structural Height |
22 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
22 |
Owyhee River Nr Rome Or
|
189cfs |
Ef Owyhee River At Crutcher Crossing
|
47cfs |
Snake River Nr Murphy Id
|
6650cfs |
Owyhee River Below Owyhee Dam Or
|
30cfs |
| Location | Reservations | Toilets |
|---|---|---|
Middle Owyhee 7
|
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Middle Owyhee 6
|
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Middle Owyhee 5
|
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Middle Owyhee 8
|
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Middle Owyhee 3
|
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Middle Owyhee 4
|