Upper North Tisdale No. 1
Upper North Tisdale No. 1 is an earth dam located in Campbell County, Wyoming, built in 1999. It carries a Low hazard potential classification and has a fair condition assessment.
About Upper North Tisdale No. 1
The primary purpose of Upper North Tisdale No. 1 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Prairie Eagle Land Company Llc (private). It impounds the Nettie Draw near Caballo Coal Mine.
The dam stands 17 feet tall and stretches 1,969 feet across, creates a reservoir covering 63 acres, has a maximum storage capacity of 271 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1999, the structure is 27 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 04/23/2024.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Wyoming |
| County | Campbell |
| Nearest City | Caballo Coal Mine |
| River/Stream | Nettie Draw |
| Coordinates | 44.16833, -105.37194 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 1,969 ft |
| Year Completed | 1999 (27 years old) |
Storage & Hydraulics
| NID Storage | 271 acre-ft |
| Max Storage | 271 acre-ft |
| Normal Storage | 228 acre-ft |
| Surface Area | 63 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 8,030 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | PRAIRIE EAGLE LAND COMPANY LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 04/23/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY02226 |
| Federal ID | WY02226 |
| More Info | State Dam Safety Program |