Prairie Cr. No. A-2-3 (Graber-Miller) Reservoir Report
Last Updated: December 5, 2025
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Summary
No. A-2-3 (Graber-Miller), also known as Graber-Miller Lake Dam, is a local government-owned structure located in Washington, Indiana. Built in 1963 by the USDA NRCS, this earth dam serves the primary purpose of flood risk reduction along Barnes Branch. With a dam height of 21 feet and a length of 1280 feet, it has a storage capacity of 1185 acre-feet and covers a surface area of 55.3 acres.
Despite its important role in mitigating flood risks, the dam is currently assessed to be in poor condition with a low hazard potential. It has not been regularly inspected, with the last assessment conducted in 2018. The dam's risk assessment indicates a high risk level (2), highlighting the need for improved maintenance and monitoring to ensure its continued effectiveness in flood protection for the surrounding area.
Given its critical function and the potential impact of its failure, it is essential for responsible authorities, such as the IDNR, to enforce regular inspections, maintenance, and risk management measures for Prairie Cr. No. A-2-3. By addressing the current poor condition and high risk assessment of the dam, it can continue to provide vital flood protection for the community and ecosystem along Barnes Branch in Daviess County, Indiana.
Year Completed |
1963 |
Dam Length |
1280 |
Dam Height |
21 |
River Or Stream |
BARNES BRANCH |
Primary Dam Type |
Earth |
Surface Area |
55.3 |
Hydraulic Height |
21 |
Drainage Area |
3.8 |
Nid Storage |
1185 |
Structural Height |
21 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
21 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
White River At Newberry
|
1050cfs |
East Fork White River At Shoals
|
2030cfs |
White River Above Petersburg
|
1220cfs |
White River At Petersburg
|
3540cfs |
Patoka River At Jasper
|
756cfs |
Busseron Creek Near Carlisle
|
29cfs |
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.
Prairie Cr. No. A-2-3 (Graber-Miller)