Little Rock Creek Reservoir Report
Nearby: Mayhew Lake Blanchard
Last Updated: December 13, 2025
Little Rock Creek, also known as Sartell Wma, is a state-regulated water resource located in Rice, Minnesota.
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Summary
This picturesque creek is a gravity dam type structure with a height of 8 feet and a length of 182 feet, completed in 1978. With a maximum storage capacity of 480 acre-feet and a normal storage of 140 acre-feet, Little Rock Creek covers a surface area of 1310 acres and drains an area of 66.5 square miles.
Managed by the Minnesota Department of Natural Resources, Little Rock Creek is designated for purposes other than flood control or irrigation. The dam has a low hazard potential and is in satisfactory condition as of the last assessment in November 2017. With a regular inspection frequency of every 8 years, this water resource plays a vital role in the local ecosystem and provides a valuable habitat for various species. Enthusiasts of water resources and climate will find Little Rock Creek to be a fascinating location to explore and study, given its unique features and regulatory status within the state.
For those interested in the conservation and management of water resources, Little Rock Creek offers a glimpse into the intricate network of dams and structures that contribute to the state's water infrastructure. With its serene surroundings and well-maintained condition, Little Rock Creek stands as a testament to the importance of sustainable water management practices. As climate change continues to impact water resources, understanding the role of structures like Little Rock Creek becomes increasingly crucial for ensuring the resilience and sustainability of our natural environment.
Year Completed |
1978 |
Dam Length |
182 |
Dam Height |
8 |
River Or Stream |
LITTLE ROCK CREEK |
Primary Dam Type |
Gravity |
Surface Area |
1310 |
Drainage Area |
66.5 |
Nid Storage |
480 |
Structural Height |
8 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
8 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Mississippi River Near Royalton
|
5320cfs |
Sauk River Near St. Cloud
|
225cfs |
Mississippi River At St. Cloud
|
2400cfs |
Long Prairie River At Long Prairie
|
122cfs |
Crow Wing River Near Pillager
|
643cfs |
Elk River Near Big Lake
|
274cfs |
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.
Little Rock Creek
Benton Beach Road Benton County
Blanchard Dam
To Ends One Mile Downstream From The Southern Village Boundary Of Rice