Lillard Dam
Lillard Dam is an earth dam located in Crook County, Oregon, built in 1950. It carries a Low hazard potential classification.
About Lillard Dam
The primary purpose of Lillard Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Charles Sherman (private). It impounds the Twelve Mile Creek, South Fork near Post.
The dam stands 27 feet tall and stretches 562 feet across, creates a reservoir covering 77 acres, has a maximum storage capacity of 840 acre-feet, and collects water from a drainage area of 12 square miles. Completed in 1950, the structure is well-established, with more than 75 years of service.
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 03/31/2017.
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Location
| State | Oregon |
| County | Crook |
| Nearest City | Post |
| River/Stream | Twelve Mile Creek, South Fork |
| Coordinates | 43.89471, -119.85218 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 26 ft |
| Dam Length | 562 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 840 acre-ft |
| Max Storage | 840 acre-ft |
| Normal Storage | 840 acre-ft |
| Surface Area | 77 acres |
| Drainage Area | 12 sq mi |
| Max Discharge | 452 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | CHARLES SHERMAN |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 03/31/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | OR00163 |
| Federal ID | OR00163 |
| More Info | State Dam Safety Program |