Big Swamp Reservoir is an earth dam located in Lake County, Oregon, built in 1908. It carries a Low hazard potential classification.
Dam profile
NID height · 10 ft10 ft tall and 150 ft long. 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 Big Swamp Reservoir
The primary purpose of Big Swamp Reservoir is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Steve Simmons (private). It impounds the Cold Spring Creek near Bly.
The dam stands 10 feet tall and stretches 150 feet across, creates a reservoir covering 37 acres, has a maximum storage capacity of 350 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1908, the structure is over a century 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.
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Location
| State | Oregon |
| County | Lake |
| Nearest City | Bly |
| River/Stream | Cold Spring Creek |
| Coordinates | 42.24393, -120.84270 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 150 ft |
| Year Completed | 1908 (118 years old) |
Storage & Hydraulics
| NID Storage | 350 acre-ft |
| Max Storage | 350 acre-ft |
| Normal Storage | 350 acre-ft |
| Surface Area | 37 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 33 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Steve Simmons |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00602 |
| Federal ID | OR00602 |
| More Info | State Dam Safety Program |