Hirsig Enl. of R. P. Allen No. 1 is an earth dam located in Laramie County, Wyoming, built in 1975. It carries a Low hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall and 720 ft long, taller than 50% of U.S. dams with a recorded height. 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 Hirsig Enl. of R. P. Allen No. 1
The primary purpose of Hirsig Enl. of R. P. Allen 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 True Ranches, LLC (private). It impounds the North Bear Creek near Hawk Springs.
The dam stands 25 feet tall and stretches 720 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 104 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1975, 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 05/30/2024.
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Location
| State | Wyoming |
| County | Laramie |
| Nearest City | Hawk Springs |
| River/Stream | North Bear Creek |
| Coordinates | 41.56700, -105.05900 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 720 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 104 acre-ft |
| Max Storage | 104 acre-ft |
| Normal Storage | 59 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 686 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | True Ranches, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/30/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01363 |
| Federal ID | WY01363 |
| More Info | State Dam Safety Program |