Pine Dale
Pine Dale is an earth dam located in Johnson County, Wyoming, built in 1940. It carries a Low hazard potential classification and has a poor condition assessment.
About Pine Dale
The primary purpose of Pine Dale is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Moore Land Company, Inc. (private). It impounds the Dry Fork Of Powder River near Arvada.
The dam stands 15 feet tall and stretches 778 feet across, creates a reservoir covering 10 acres, and has a maximum storage capacity of 122 acre-feet. Completed in 1940, the structure is well-established, with more than 75 years of service.
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 07/03/2023.
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Location
| State | Wyoming |
| County | Johnson |
| Nearest City | Arvada |
| River/Stream | Dry Fork Of Powder River |
| Coordinates | 43.50278, -106.02806 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 778 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 122 acre-ft |
| Max Storage | 122 acre-ft |
| Normal Storage | 62 acre-ft |
| Surface Area | 10 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | MOORE LAND COMPANY, INC. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 07/03/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01010 |
| Federal ID | WY01010 |
| More Info | State Dam Safety Program |