Little Raccoon Dam No. 12 Reservoir Report
Last Updated: December 18, 2025
Little Raccoon Dam No.
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Summary
12, also known as Tannebaum Lake, is a local government-owned earth dam located in Parke, Indiana. Completed in 1973 by the USDA NRCS, this dam serves as a crucial flood risk reduction measure along the South Fork Little Raccoon Creek. With a height of 39.1 feet and a length of 900 feet, the dam has a storage capacity of 5704 acre-feet and a drainage area of 14.11 square miles.
The dam's primary purpose is flood risk reduction, with a spillway width of 230 feet to manage high water levels. Despite being classified as having a significant hazard potential, the dam is currently in fair condition according to a 2014 assessment. Regular inspections are conducted, with the last one carried out in January 2018. The risk assessment for Little Raccoon Dam No. 12 is moderate, highlighting the importance of ongoing monitoring and maintenance to ensure the safety and effectiveness of this essential water resource infrastructure in Indiana.
Year Completed |
1973 |
Dam Length |
900 |
Dam Height |
39.1 |
River Or Stream |
SOUTH FORK LITTLE RACCOON CREEK |
Primary Dam Type |
Earth |
Surface Area |
101 |
Hydraulic Height |
37 |
Drainage Area |
14.11 |
Nid Storage |
5704 |
Structural Height |
37 |
Outlet Gates |
None |
Hazard Potential |
Significant |
Foundations |
Rock, Soil |
Nid Height |
39 |
Seasonal Comparison
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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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Little Raccoon Dam No. 12