Orchard is a dam located in Ada County, Idaho, built in 1902. It carries a Significant hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 43 ft43 ft tall and 2,800 ft long, taller than 89% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Orchard
Orchard is a dam in Ada, Idaho. The dam is state-owned. It impounds the Indian Creek Boise River near Uprr.
The dam stands 43 feet tall and stretches 2,800 feet across, creates a reservoir covering 195 acres, has a storage capacity of 2,035 acre-feet, and collects water from a drainage area of 51 square miles. Completed in 1902, the structure is over a century old.
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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 05/09/2018.
At 43 feet, this dam is taller than 89% of dams nationwide.
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Location
| State | Idaho |
| County | Ada |
| Nearest City | Uprr |
| River/Stream | Indian Creek Boise River |
| Coordinates | 43.38950, -116.01720 |
Physical Characteristics
| NID Height | 43 ft |
| Dam Height | 43 ft |
| Dam Length | 2,800 ft |
| Year Completed | 1902 (124 years old) |
Storage & Hydraulics
| NID Storage | 2,035 acre-ft |
| Normal Storage | 2,035 acre-ft |
| Surface Area | 195 acres |
| Drainage Area | 51 sq mi |
| Max Discharge | 1,500 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 05/09/2018 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ID00206 |
| Federal ID | ID00206 |
| More Info | State Dam Safety Program |