Frederick is an earth dam located in Brown County, South Dakota, built in 1931. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 200 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 Frederick
The primary purpose of Frederick is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Gf&p (state). It impounds the Maple River near Frederick.
The dam stands 20 feet tall and stretches 200 feet across, and has a maximum storage capacity of 145 acre-feet. Completed in 1931, 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. The most recent inspection on record was 11/05/2019.
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Location
| State | South Dakota |
| County | Brown |
| Nearest City | Frederick |
| River/Stream | Maple River |
| Coordinates | 45.83243, -98.51271 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 200 ft |
| Year Completed | 1931 (95 years old) |
Storage & Hydraulics
| NID Storage | 145 acre-ft |
| Max Storage | 145 acre-ft |
| Normal Storage | 120 acre-ft |
| Max Discharge | 4,445 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Gf&p |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 11/05/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00079 |
| Federal ID | SD00079 |
| More Info | State Dam Safety Program |