Andrew Dam is an earth dam located in Jackson County, South Dakota, built in 1937. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 370 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 Andrew Dam
The primary purpose of Andrew Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by S&pl (state). It impounds the Tr Bad River.
The dam stands 20 feet tall and stretches 370 feet across, and has a maximum storage capacity of 740 acre-feet. Completed in 1937, 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 08/22/2023.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | South Dakota |
| County | Jackson |
| Nearest City | None |
| River/Stream | Tr Bad River |
| Coordinates | 43.86400, -101.52121 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 370 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 740 acre-ft |
| Max Storage | 740 acre-ft |
| Normal Storage | 360 acre-ft |
| Max Discharge | 1,420 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | S&pl |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 08/22/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01171 |
| Federal ID | SD01171 |
| More Info | State Dam Safety Program |