Water Supply Lake Reservoir Report
Nearby: Critzer Dam Dam No 4
Last Updated: December 12, 2025
Water Supply Lake in Linn, Kansas, is a crucial water resource managed by the local government and regulated by the Kansas Department of Agriculture.
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Summary
With a storage capacity of 3,462 acre-feet and a surface area of 148 acres, this Earth dam serves the primary purpose of supplying water. The dam stands at 32 feet tall and stretches 1,450 feet in length, with a spillway width of 140 feet for uncontrolled discharge.
Located within the Tulsa District, Water Supply Lake has a significant hazard potential but is currently assessed to be in fair condition. The dam has a moderate risk assessment rating of 3, with inspections conducted every 5 years to ensure its safety. Despite lacking certain emergency preparedness measures like an Emergency Action Plan, the lake serves as a vital water supply source for the surrounding area, highlighting the importance of proper management and maintenance of water resources in the face of climate challenges.
Dam Length |
1450 |
Dam Height |
32 |
Primary Dam Type |
Earth |
Surface Area |
148 |
Drainage Area |
5.74 |
Nid Storage |
3462 |
Outlet Gates |
None |
Hazard Potential |
Significant |
Foundations |
Unlisted/Unknown |
Nid Height |
32 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
L Osage R At Fulton
|
1cfs |
Marais Des Cygnes R Nr Ks-Mo St Line
|
98cfs |
Marais Des Cygnes R At La Cygne
|
114cfs |
Marmaton R Nr Uniontown
|
0cfs |
Marmaton R Nr Fort Scott
|
2cfs |
Marmaton R Nr Marmaton
|
194cfs |
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.
Water Supply Lake