Little Moreau #3 is a state-regulated earth dam located in Dewey, South Dakota, along a tributary of the Little Moreau River.
Constructed in 1960, this dam stands at a height of 18 feet and has a storage capacity of 72 acre-feet. With a low hazard potential and a condition assessment that is currently not rated, this dam serves as a vital water resource management structure for the region.
Owned and regulated by the South Dakota Department of Agriculture and Natural Resources, Little Moreau #3 undergoes regular inspections every three years to ensure its safety and functionality. The dam's emergency action plan status, risk assessment, and risk management measures are currently not available, indicating a potential area for improvement in terms of disaster preparedness and mitigation. Despite its modest size and low hazard potential, the dam plays a crucial role in water storage and flood control efforts in the region.
For water resource and climate enthusiasts, Little Moreau #3 presents an intriguing case study in state-level dam management and infrastructure resilience. As climate change continues to impact water resources and weather patterns, the maintenance and monitoring of structures like Little Moreau #3 will be essential in ensuring the safety and sustainability of water systems in South Dakota and beyond.
Wind
Humidity
Year Completed |
1960 |
Dam Length |
300 |
Dam Height |
18 |
River Or Stream |
TRIB. LITTLE MOREAU RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
18 |
Nid Storage |
72 |
Hazard Potential |
Low |
Nid Height |
18 |
Brazos Rv Nr Palo Pinto
|
115cfs |
Brazos Rv Nr Dennis
|
74cfs |
Brazos Rv Nr Graford
|
123cfs |
Clear Fk Trinity Rv Nr Weatherford
|
1cfs |
Walnut Ck At Reno
|
2cfs |
Clear Fork Trinity Rv At Kelly Rd Nr Aledo
|
9cfs |
| Location | Reservations | Toilets |
|---|---|---|
Lake Mineral Wells State Park
|
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Post Oak
|
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Live Oak
|
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Plateau
|
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Cross Timbers
|