Boulder Lane is an earth dam located in Johnson County, Wyoming, built in 2007. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 34 ft34 ft tall and 324 ft long, taller than 78% 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 Boulder Lane
The primary purpose of Boulder Lane is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Aht Land, LLC (lessee) (private). It impounds the Looney Draw near Ranch in Section 30.
The dam stands 34 feet tall and stretches 324 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 77 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 2007, the structure is relatively new.
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 08/31/2022.
At 34 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Wyoming |
| County | Johnson |
| Nearest City | Ranch in Section 30 |
| River/Stream | Looney Draw |
| Coordinates | 44.43980, -106.30940 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 324 ft |
| Year Completed | 2007 (19 years old) |
Storage & Hydraulics
| NID Storage | 77 acre-ft |
| Max Storage | 77 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,850 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Aht Land, LLC (lessee) |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 08/31/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY02409 |
| Federal ID | WY02409 |
| More Info | State Dam Safety Program |