Grey Stone Lake Dam "C" West Reservoir Report
Last Updated: December 5, 2025
Grey Stone Lake Dam "C" West, also known as Joseph Stanczyk Lake Dam "C", is a privately owned structure located in DeKalb, Indiana.
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Summary
Built in 1971 by the U.S. Department of Agriculture Soil Conservation Service, this earth dam stands at a height of 15.9 feet and spans 335 feet in length. The primary purpose of the dam is for recreation, with a storage capacity of 254 acre-feet and a normal storage level of 172 acre-feet.
Situated on an unnamed tributary of John Diehl Ditch, Grey Stone Lake Dam "C" West poses a low hazard potential but has been assessed as being in poor condition as of 2016. Despite its moderate risk rating, the dam has not undergone recent modifications or management measures. With a controlled spillway width of 32 feet and no outlet gates, the dam's last inspection in 2016 revealed the need for improvement. As water resource and climate enthusiasts, the future of this dam warrants attention to ensure its continued safety and functionality for both recreational and environmental purposes.
Given its location in a regulated area with state oversight from the Indiana Department of Natural Resources, the dam's condition and risk assessment should be closely monitored. With proper maintenance and potential upgrades, Grey Stone Lake Dam "C" West can continue to provide essential water management benefits while enhancing recreational opportunities in the region. As advocates for sustainable water resource management, it is crucial to prioritize the safety and integrity of dams like Grey Stone Lake Dam "C" West to mitigate potential risks and secure the long-term resilience of our water infrastructure.
Year Completed |
1971 |
Dam Length |
335 |
Dam Height |
15.9 |
River Or Stream |
UNNAMED TRIBUTARY JOHN DIEHL DITCH |
Primary Dam Type |
Earth |
Surface Area |
11 |
Drainage Area |
0.13 |
Nid Storage |
254 |
Outlet Gates |
None |
Hazard Potential |
Low |
Nid Height |
16 |
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.
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