Lacreek Dam No. 7 Reservoir Report
Nearby: Lacreek Dam No. 8 Cedar Creek Dam
Last Updated: December 13, 2025
Lacreek Dam No.
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Summary
7, located in Bennett, South Dakota, is a federal-owned structure managed by the Fish and Wildlife Service. Built in 1934, this Earth-type dam stands at a height of 11 feet with a hydraulic height of 10 feet, serving primarily as a Fish and Wildlife Pond. With a storage capacity of 4,386 acre-feet and a surface area of 530 acres, the dam plays a crucial role in supporting the local ecosystem and wildlife.
This low-hazard dam on Lake Creek boasts a fair condition assessment as of September 2019, with regular inspections ensuring its safety and functionality. Equipped with controlled outlet gates, including slide gates, the dam has a maximum discharge capacity of 1,480 cubic feet per second. Despite its age, Lacreek Dam No. 7 continues to fulfill its purpose effectively while providing valuable water resources for the surrounding area.
As a key component of the Fish and Wildlife Service's operations, Lacreek Dam No. 7 stands as a testament to sustainable water management practices. With its modest hazard potential and strategic location within the St. Paul District, this dam serves as a vital resource for conservation efforts in South Dakota. Climate and water resource enthusiasts can appreciate the role of Lacreek Dam No. 7 in maintaining a balanced ecosystem while supporting the diverse wildlife population in the region.
Year Completed |
1934 |
Dam Length |
6210 |
Dam Height |
11 |
River Or Stream |
LAKE CREEK |
Primary Dam Type |
Earth |
Surface Area |
530 |
Hydraulic Height |
10 |
Drainage Area |
85 |
Nid Storage |
4386 |
Structural Height |
11 |
Outlet Gates |
Other Controlled, Slide (sluice gate) |
Hazard Potential |
Low |
Nid Height |
11 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Lacreek Dam No. 7