Jussila Bow
Jussila Bow is a dam located in Valley County, Idaho, built in 1949. It carries a Significant hazard potential classification and has a fair condition assessment.
About Jussila Bow
The primary purpose of Jussila Bow 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 Wilhelm Creek Boulder Creek near Donnelly.
The dam stands 23 feet tall and stretches 325 feet across, creates a reservoir covering 22 acres, has a storage capacity of 175 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1949, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 06/17/2019.
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Location
| State | Idaho |
| County | Valley |
| Nearest City | Donnelly |
| River/Stream | Wilhelm Creek Boulder Creek |
| Coordinates | 44.82320, -116.04020 |
Physical Characteristics
| NID Height | 23 ft |
| Dam Height | 23 ft |
| Dam Length | 325 ft |
| Year Completed | 1949 (77 years old) |
Storage & Hydraulics
| NID Storage | 175 acre-ft |
| Normal Storage | 175 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 128 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 06/17/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ID00123 |
| Federal ID | ID00123 |
| More Info | State Dam Safety Program |