Chilco
Chilco is a dam located in Kootenai County, Idaho, built in 1907. It carries a Significant hazard potential classification and has a fair condition assessment.
About Chilco
Chilco is a dam in Kootenai, Idaho. The dam is private-owned. It impounds the Chilco Creek Sinks near Chilco.
The dam stands 17 feet tall and stretches 90 feet across, creates a reservoir covering 42 acres, has a storage capacity of 340 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1907, 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 05/15/2017.
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Location
| State | Idaho |
| County | Kootenai |
| Nearest City | Chilco |
| River/Stream | Chilco Creek Sinks |
| Coordinates | 47.86358, -116.73389 |
Physical Characteristics
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 90 ft |
| Year Completed | 1907 (119 years old) |
Storage & Hydraulics
| NID Storage | 340 acre-ft |
| Normal Storage | 340 acre-ft |
| Surface Area | 42 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 240 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 05/15/2017 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | ID00152 |
| Federal ID | ID00152 |
| More Info | State Dam Safety Program |