Mill Creek Reservoir Report
Nearby: Cold Spring St. Johns University
Last Updated: December 13, 2025
Mill Creek, located in Stearns County, Minnesota, is a state-regulated gravity dam completed in 1870 with a primary purpose listed as "Other." The dam stands at 13 feet in height and spans 51 feet in length, with a storage capacity of 50 acre-feet.
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Summary
Although the dam has a low hazard potential and is deemed to be in satisfactory condition as of the last assessment in 2015, it undergoes regular inspections every four years to ensure its safety and functionality.
With a drainage area of 47.9 square miles, Mill Creek plays a crucial role in the local water resource management of the region. As part of the St. Paul District, this dam contributes to flood control and water supply management efforts in the area. The dam's presence also highlights the intersection between water resource infrastructure and climate considerations, as it serves as a key component in the broader ecosystem of Mill Creek and its surrounding environment.
For water resource and climate enthusiasts, Mill Creek offers a fascinating case study in the history and ongoing management of dam infrastructure in Minnesota. Its location in the Rockville area, along with its design and purpose, provide valuable insights into the intricate balance between human development and environmental conservation in the context of water resources and climate change. By understanding the significance of structures like Mill Creek, enthusiasts can gain a deeper appreciation for the complexities of managing water in a changing climate landscape.
Year Completed |
1870 |
Dam Length |
51 |
Dam Height |
13 |
River Or Stream |
MILL CREEK |
Primary Dam Type |
Gravity |
Drainage Area |
47.9 |
Nid Storage |
50 |
Structural Height |
13 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
13 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Sauk River Near St. Cloud
|
225cfs |
Mississippi River At St. Cloud
|
2400cfs |
Mississippi River Near Royalton
|
5320cfs |
Elk River Near Big Lake
|
274cfs |
Crow River At Rockford
|
386cfs |
Long Prairie River At Long Prairie
|
122cfs |
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.
Mill Creek
Grand Lake Road 11330, Rockville
The Beaver Islands At St. Cloud
To The Confluence Of The Clearwater River