New Deal No. 1
New Deal No. 1 is an earth dam located in Niobrara County, Wyoming, built in 1972. It carries a Low hazard potential classification and has a poor condition assessment.
About New Deal No. 1
The primary purpose of New Deal No. 1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Gregg A. Matney Trust (private). It impounds the Boggy Creek near Edgemont S D.
The dam stands 46 feet tall and stretches 1,400 feet across, creates a reservoir covering 89 acres, and has a maximum storage capacity of 1,499 acre-feet. Completed in 1972, 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. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 10/10/2022.
At 46 feet, this dam is taller than 91% of dams nationwide.
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Location
| State | Wyoming |
| County | Niobrara |
| Nearest City | Edgemont S D |
| River/Stream | Boggy Creek |
| Coordinates | 43.38700, -104.45410 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 46 ft |
| Dam Height | 43 ft |
| Dam Length | 1,400 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 1,499 acre-ft |
| Max Storage | 1,499 acre-ft |
| Normal Storage | 997 acre-ft |
| Surface Area | 89 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | GREGG A. MATNEY TRUST |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 10/10/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00431 |
| Federal ID | WY00431 |
| More Info | State Dam Safety Program |