Four Mile Creek Site 9b Dam Reservoir Report
Last Updated: February 21, 2026
Four Mile Creek Site 9b Dam, located in Oxford, Ohio, serves as a vital structure for grade stabilization along a tributary to Four Mile Creek.
Summary
Constructed in 1995 by the USDA NRCS, this earth dam stands at 29.1 feet high and spans a length of 825 feet. With a storage capacity of 279.2 acre-feet and a drainage area of 1.38 square miles, the dam plays a crucial role in managing water flow and preventing erosion in the area.
The dam is regulated by the Department of Natural Resources in Ohio and has a low hazard potential with a satisfactory condition assessment. Despite its uncontrolled spillway and outlet gates, the dam has a history of regular inspections, with the last one conducted in April 2016. With a moderate risk assessment rating, the dam continues to fulfill its primary purpose of grade stabilization effectively, ensuring the safety and protection of the surrounding environment and communities. Water resource and climate enthusiasts will find Four Mile Creek Site 9b Dam an intriguing example of infrastructure designed to balance the needs of water management and environmental conservation.
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mph
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Humidity
15-Day Weather Outlook
Year Completed |
1995 |
Dam Length |
825 |
Dam Height |
29.1 |
River Or Stream |
TRIBUTARY TO FOUR MILE CREEK |
Primary Dam Type |
Earth |
Surface Area |
9.8 |
Drainage Area |
1.38 |
Nid Storage |
279.2 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
29 |
Seasonal Comparison
5-Day Hourly Forecast Detail
Nearby Streamflow Levels
Sevenmile Creek At Camden Oh
|
210cfs |
East Fork Whitewater River At Abington
|
615cfs |
East Fork Whitewater River At Richmond
|
163cfs |
Great Miami River At Hamilton Oh
|
13100cfs |
Twin Creek Near Germantown Oh
|
1820cfs |
Whitewater River At Brookville
|
3900cfs |
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.
Four Mile Creek Site 9b Dam