Danelson Reservoir is an earth dam located in Daniels County, Montana, built in 1968. It carries a Low hazard potential classification.
Dam profile
NID height · 22 ft22 ft tall and 959 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 Danelson Reservoir
The primary purpose of Danelson Reservoir is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Julian Danelson (private). It impounds the Tr-line Coulee near Poplar.
The dam stands 22 feet tall and stretches 959 feet across, has a maximum storage capacity of 134 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1968, 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.
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Location
| State | Montana |
| County | Daniels |
| Nearest City | Poplar |
| River/Stream | Tr-line Coulee |
| Coordinates | 48.68523, -105.28537 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 959 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 134 acre-ft |
| Max Storage | 134 acre-ft |
| Normal Storage | 62 acre-ft |
| Drainage Area | 4 sq mi |
| Max Discharge | 780 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Julian Danelson |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00966 |
| Federal ID | MT00966 |
| More Info | State Dam Safety Program |