Gleason Reservoir No. 2 is an earth dam located in Laramie County, Wyoming, built in 1909. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 21 ft21 ft tall and 400 ft long. 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 Gleason Reservoir No. 2
The primary purpose of Gleason Reservoir No. 2 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Lars0n Vallry Ranch, LLC (private). It impounds the Lone Tree Creek Offstream near Timnath, Colorado.
The dam stands 21 feet tall and stretches 400 feet across, creates a reservoir covering 30 acres, and has a maximum storage capacity of 230 acre-feet. Completed in 1909, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 05/10/2022.
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Location
| State | Wyoming |
| County | Laramie |
| Nearest City | Timnath, Colorado |
| River/Stream | Lone Tree Creek Offstream |
| Coordinates | 41.03370, -104.90230 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 20 ft |
| Dam Length | 400 ft |
| Year Completed | 1909 (117 years old) |
Storage & Hydraulics
| NID Storage | 230 acre-ft |
| Max Storage | 230 acre-ft |
| Normal Storage | 160 acre-ft |
| Surface Area | 30 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Lars0n Vallry Ranch, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 05/10/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00014 |
| Federal ID | WY00014 |
| More Info | State Dam Safety Program |