Little Walnut Creek Conservancy District Structure #4 Reservoir Report
Last Updated: December 16, 2025
Little Walnut Creek Conservancy District Structure #4, also known as Glenn Flint Lake Dam, is a local government-owned structure located in Putnam, Indiana.
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Summary
Completed in 1976, this earth dam stands at a height of 66 feet and serves the primary purpose of flood risk reduction along Owl Creek. With a storage capacity of 15,844 acre-feet and a drainage area of 15.16 square miles, this dam plays a crucial role in managing water resources in the region.
The dam features a spillway width of 450 feet and is equipped with slide (sluice gate) outlet gates for water release. Despite being classified as having a high hazard potential, a recent inspection in April 2020 rated its overall condition as fair. The dam is regulated by the Indiana Department of Natural Resources and has state permitting, inspection, and enforcement in place to ensure its operational safety and compliance with regulations.
Water resource and climate enthusiasts will appreciate the role of Little Walnut Creek Conservancy District Structure #4 in mitigating flood risks and managing water flow in the area. Its strategic location, design, and storage capacity make it a key asset in safeguarding the surrounding communities from potential inundation events. With regular inspections and state oversight, this dam continues to serve its critical function in protecting the environment and public safety.
Year Completed |
1976 |
Dam Length |
1230 |
Dam Height |
66 |
River Or Stream |
OWL CREEK |
Primary Dam Type |
Earth |
Surface Area |
300.65 |
Hydraulic Height |
66 |
Drainage Area |
15.16 |
Nid Storage |
15844 |
Structural Height |
66 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
High |
Foundations |
Rock, Soil |
Nid Height |
66 |
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.
Little Walnut Creek Conservancy District Structure #4