Lamb Lower
Lamb Lower is an earth dam located in Natrona County, Wyoming, built in 1952. It carries a Low hazard potential classification and has a poor condition assessment.
About Lamb Lower
The primary purpose of Lamb Lower is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by X L Land & Cattle, Llc (private). It impounds the Brushy Draw, Trib. Nigger Crk. near Big Muddy Oil Field.
The dam stands 28 feet tall and stretches 330 feet across, creates a reservoir covering 11 acres, and has a maximum storage capacity of 121 acre-feet. Completed in 1952, 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 08/18/2022.
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Location
| State | Wyoming |
| County | Natrona |
| Nearest City | Big Muddy Oil Field |
| River/Stream | Brushy Draw, Trib. Nigger Crk. |
| Coordinates | 42.75420, -106.08750 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 330 ft |
| Year Completed | 1952 (74 years old) |
Storage & Hydraulics
| NID Storage | 121 acre-ft |
| Max Storage | 121 acre-ft |
| Normal Storage | 52 acre-ft |
| Surface Area | 11 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | X L LAND & CATTLE, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 08/18/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00247 |
| Federal ID | WY00247 |
| More Info | State Dam Safety Program |