Thiellis
Thiellis is an earth dam located in Carbon County, Montana, built in 1972. It carries a Low hazard potential classification.
About Thiellis
The primary purpose of Thiellis is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Ellis Cattle Co (private). It impounds the Thiel Creek near Joliet.
The dam stands 18 feet tall and stretches 610 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 76 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1972, the structure is well into its service life at over 50 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.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Montana |
| County | Carbon |
| Nearest City | Joliet |
| River/Stream | Thiel Creek |
| Coordinates | 45.25845, -109.36165 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 610 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 76 acre-ft |
| Max Storage | 76 acre-ft |
| Normal Storage | 56 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 230 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | ELLIS CATTLE CO |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT03279 |
| Federal ID | MT03279 |
| More Info | State Dam Safety Program |