Summary
Built in 1938 by the Works Progress Administration, this structure stands at a height of 19 feet and has a normal storage capacity of 125 acre-feet to help mitigate flood risks in the area. The dam is regulated by the Minnesota Department of Natural Resources and undergoes regular inspections to ensure its satisfactory condition.
With a low hazard potential and a moderate risk assessment rating, Two Rivers plays a crucial role in flood risk reduction for the surrounding community. The dam's uncontrolled spillway, with a width of 45 feet, allows for a maximum discharge of 1900 cubic feet per second, helping to manage water levels during periods of heavy rainfall. Despite its age, Two Rivers remains structurally sound and continues to serve its primary purpose effectively.
As a vital piece of infrastructure in the region, Two Rivers highlights the importance of proper water resource management and climate resilience. Its presence not only protects the local area from potential flooding but also underscores the need for ongoing maintenance and monitoring of dams to ensure their continued functionality in the face of changing environmental conditions.
Year Completed |
1938 |
Dam Length |
61 |
Dam Height |
19 |
River Or Stream |
TWO RIVERS SOUTH BRANCH |
Primary Dam Type |
Gravity |
Surface Area |
10 |
Hydraulic Height |
11 |
Drainage Area |
510 |
Nid Storage |
150 |
Structural Height |
20 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
20 |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Gilbert Olson Park
|
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Horseshoe Park
|
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Lancaster Park
|
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Lancaster City Park
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Two Rivers