Siltcoos Lake is a gravity dam located in Lane County, Oregon, built in 1964. It carries a Low hazard potential classification.
Dam profile
NID height · 14 ft14 ft tall and 130 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Siltcoos Lake
Siltcoos Lake is a dam in Lane, Oregon. The dam is owned by Industrial Harbor USA (private). It impounds the Siltcoos River near No Downstream Settlement.
The dam stands 14 feet tall and stretches 130 feet across, creates a reservoir covering 3,585 acres, has a maximum storage capacity of 15,070 acre-feet, and collects water from a drainage area of 50 square miles. Completed in 1964, 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. The most recent inspection on record was 09/17/2018.
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Location
| State | Oregon |
| County | Lane |
| Nearest City | No Downstream Settlement |
| River/Stream | Siltcoos River |
| Coordinates | 43.88024, -124.13255 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 14 ft |
| Dam Height | 12 ft |
| Dam Length | 130 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 15,070 acre-ft |
| Max Storage | 15,070 acre-ft |
| Normal Storage | 15,070 acre-ft |
| Surface Area | 3,585 acres |
| Drainage Area | 50 sq mi |
| Max Discharge | 10,000 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | Industrial Harbor USA |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 09/17/2018 |
| Emergency Action Plan | No |
Identifiers
| NID ID | OR00358 |
| Federal ID | OR00358 |
| More Info | State Dam Safety Program |