Glen Means is an earth dam located in Johnson County, Wyoming, built in 1992. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 34 ft34 ft tall and 650 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 Glen Means
The primary purpose of Glen Means is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Robinson Canyon Ranch LLC (private). It impounds the Seventy Six Draw near Arvada.
The dam stands 34 feet tall and stretches 650 feet across, creates a reservoir covering 18 acres, has a maximum storage capacity of 220 acre-feet, and collects water from a drainage area of 8 square miles. Completed in 1992, the structure is 34 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 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 06/06/2023.
At 34 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Wyoming |
| County | Johnson |
| Nearest City | Arvada |
| River/Stream | Seventy Six Draw |
| Coordinates | 44.03806, -106.72083 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 28 ft |
| Dam Length | 650 ft |
| Year Completed | 1992 (34 years old) |
Storage & Hydraulics
| NID Storage | 220 acre-ft |
| Max Storage | 220 acre-ft |
| Normal Storage | 130 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 8 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Robinson Canyon Ranch LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/06/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY02065 |
| Federal ID | WY02065 |
| More Info | State Dam Safety Program |