Holbrook
Holbrook is a dam located in Valley County, Idaho, built in 1955. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Holbrook
The primary purpose of Holbrook is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is private-owned. It impounds the Little Squaw Creek Squaw Creek.
The dam stands 17 feet tall and stretches 380 feet across, creates a reservoir covering 20 acres, has a storage capacity of 71 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1955, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 06/28/2017.
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Location
| State | Idaho |
| County | Valley |
| River/Stream | Little Squaw Creek Squaw Creek |
| Coordinates | 44.24750, -116.13970 |
Physical Characteristics
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 380 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 71 acre-ft |
| Normal Storage | 71 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 160 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/28/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ID00125 |
| Federal ID | ID00125 |
| More Info | State Dam Safety Program |