Mcpherson
Mcpherson is an earth dam located in Natrona County, Wyoming, built in 1923. It carries a Low hazard potential classification and has a fair condition assessment.
About Mcpherson
The primary purpose of Mcpherson is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by B.b. Brooks Ranch (private). It impounds the Mcpherson Draw Tr Casper Cr.
The dam stands 20 feet tall and stretches 510 feet across, creates a reservoir covering 11 acres, and has a maximum storage capacity of 168 acre-feet. Completed in 1923, 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 09/22/2022.
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Location
| State | Wyoming |
| County | Natrona |
| River/Stream | Mcpherson Draw Tr Casper Cr |
| Coordinates | 43.05610, -106.33280 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 510 ft |
| Year Completed | 1923 (103 years old) |
Storage & Hydraulics
| NID Storage | 168 acre-ft |
| Max Storage | 168 acre-ft |
| Normal Storage | 113 acre-ft |
| Surface Area | 11 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | B.B. BROOKS RANCH |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 09/22/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01754 |
| Federal ID | WY01754 |
| More Info | State Dam Safety Program |