South Fork Pine River Reservoir Report
Nearby: Pine Mountain Lake Norway Lake
Last Updated: December 5, 2025
South Fork Pine River, also known as Bull Moose Wma, is a vital water resource located in Cass County, Minnesota.
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Summary
Managed by the local government, this rockfill dam was completed in 1979 and serves various purposes including flood control, irrigation, and recreation. With a height of 6 feet and a storage capacity of 50 acre-feet, the dam plays a crucial role in regulating the flow of the Pine River South Fork.
This structure, designed by MNDNR-DOW, is under the regulatory oversight of the Minnesota Department of Natural Resources (MNDNR EWR). Despite being classified as low hazard potential, South Fork Pine River is regularly inspected and its condition is assessed as fair. Situated in a picturesque location near Cross Lake, this dam contributes to the overall water management efforts in the region. Enthusiasts of water resources and climate will find South Fork Pine River to be a fascinating example of infrastructure that balances environmental conservation with human needs.
With a drainage area of 14.6 square miles, South Fork Pine River plays a significant role in the hydrology of the region. The dam's presence ensures a reliable water supply for various stakeholders while also protecting against potential flooding events. As climate change continues to impact water resources, structures like South Fork Pine River will become increasingly crucial in maintaining the delicate balance between human development and environmental sustainability.
Year Completed |
1979 |
Dam Length |
40 |
Dam Height |
6 |
River Or Stream |
PINE RIVER SOUTH FORK |
Primary Dam Type |
Rockfill |
Drainage Area |
14.6 |
Nid Storage |
50 |
Structural Height |
8 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
8 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Crow Wing River At Nimrod
|
279cfs |
Straight River Near Park Rapids
|
46cfs |
Mississippi River At Brainerd
|
972cfs |
Crow Wing River Near Pillager
|
708cfs |
Mississippi River At Aitkin
|
1010cfs |
Mississippi River Near Bemidji
|
169cfs |
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.
South Fork Pine River