Timm Lake Reservoir Report
Nearby: Curtis Lake Curtis Lake East Bay
Last Updated: December 12, 2025
Timm Lake, located in Wood Lake, Minnesota, is a captivating destination for water resource and climate enthusiasts.
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Summary
This local government-owned lake serves as a vital water source for the area, regulated by the Minnesota Department of Natural Resources. With a gravity dam type and a height of 6 feet, Timm Lake was completed in 1924 and boasts a storage capacity of 720 acre-feet.
The lake covers an area of 260 acres, with a drainage area of 2.99 square miles and a maximum discharge capacity of 175 cubic feet per second. Despite its age, Timm Lake's dam is assessed to be in fair condition with a low hazard potential. The last inspection in 2018 revealed that the lake meets safety standards and is equipped with emergency preparedness measures.
Enthusiasts can appreciate Timm Lake for its historical significance, diverse wildlife, and recreational opportunities. Whether you're interested in the engineering behind its gravity dam or the ecological impact it has on the surrounding area, Timm Lake offers a unique blend of natural beauty and human ingenuity worth exploring for water resource and climate enthusiasts alike.
Year Completed |
1924 |
Dam Height |
6 |
River Or Stream |
WOOD LAKE CREEK |
Primary Dam Type |
Gravity |
Surface Area |
260 |
Drainage Area |
2.99 |
Nid Storage |
720 |
Structural Height |
8 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
8 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Yellow Medicine River Near Granite Falls
|
133cfs |
Redwood River Near Marshall
|
0cfs |
Redwood River Near Redwood Falls
|
53cfs |
Minnesota River At Morton
|
1750cfs |
Minnesota River At Montevideo
|
1810cfs |
Chippewa River Near Watson
|
430cfs |
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.
Timm Lake