Lookout
Lookout is an earth dam located in Lyman County, South Dakota, built in 1938. It carries a Low hazard potential classification.
About Lookout
The primary purpose of Lookout is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Usda Fs (federal). It impounds the Cedar Creek.
The dam stands 25 feet tall and stretches 335 feet across, and has a maximum storage capacity of 40 acre-feet. Completed in 1938, 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.
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Location
| State | South Dakota |
| County | Lyman |
| Nearest City | None |
| River/Stream | Cedar Creek |
| Coordinates | 44.14166, -100.33499 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 335 ft |
| Year Completed | 1938 (88 years old) |
Storage & Hydraulics
| NID Storage | 40 acre-ft |
| Max Storage | 40 acre-ft |
| Normal Storage | 32 acre-ft |
| Max Discharge | 11 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | USDA FS |
| Owner Type | Federal |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01176 |
| Federal ID | SD01176 |
| More Info | State Dam Safety Program |