Deraeve Reservoir #1 (lower)
Deraeve Reservoir #1 (lower) is an earth dam located in Polk County, Oregon, built in 1978. It carries a Significant hazard potential classification.
About Deraeve Reservoir #1 (lower)
The primary purpose of Deraeve Reservoir #1 (lower) is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Mark Gaibler (private). It impounds the Ash Swale near Mccoy.
The dam stands 18 feet tall and stretches 300 feet across, creates a reservoir covering 42 acres, has a maximum storage capacity of 325 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1978, the structure is 48 years 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. The most recent inspection on record was 10/22/2020.
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Location
| State | Oregon |
| County | Polk |
| Nearest City | Mccoy |
| River/Stream | Ash Swale |
| Coordinates | 45.06386, -123.21836 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 300 ft |
| Year Completed | 1978 (48 years old) |
Storage & Hydraulics
| NID Storage | 325 acre-ft |
| Max Storage | 325 acre-ft |
| Normal Storage | 325 acre-ft |
| Surface Area | 42 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1,459 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | MARK GAIBLER |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 10/22/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00734 |
| Federal ID | OR00734 |
| More Info | State Dam Safety Program |