Blue Cloud Abbey Dam #1 is an earth dam located in Grant County, South Dakota, built in 1951. It carries a Low hazard potential classification.
Dam profile
NID height · 35 ft35 ft tall and 280 ft long, taller than 80% of U.S. dams with a recorded height. 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 Blue Cloud Abbey Dam #1
The primary purpose of Blue Cloud Abbey Dam #1 is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Blue Cloud Abbey (private). It impounds the Tr-whetstone River.
The dam stands 35 feet tall and stretches 280 feet across, and has a maximum storage capacity of 50 acre-feet. Completed in 1951, 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.
At 35 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | South Dakota |
| County | Grant |
| Nearest City | None |
| River/Stream | Tr-whetstone River |
| Coordinates | 45.25072, -96.89113 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 280 ft |
| Year Completed | 1951 (75 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 32 acre-ft |
| Max Discharge | 3,235 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Blue Cloud Abbey |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01124 |
| Federal ID | SD01124 |
| More Info | State Dam Safety Program |