Germantown Dam dam
Germantown Dam
Germantown Dam, located in Montgomery, Ohio, along the Twin Creek, was completed in 1922 by the Miami Conservancy District for the primary purpose of flood risk reduction. This earth dam stands at a height of 107 feet and has a length of 1210 feet, providing a storage capacity of 142,000 acre-feet. With a drainage area of 275 square miles, the dam plays a crucial role in managing the flow of water and reducing the risk of flooding in the region.
Managed by the local government, Germantown Dam is regulated by the Ohio Department of Natural Resources, ensuring regular inspections and enforcement to maintain its structural integrity. The dam has a high hazard potential but is currently assessed to be in fair condition as of the last inspection in March 2016. While there are no associated structures or locks, the dam serves as a vital infrastructure for flood control in the area, protecting downstream communities and land from potential water damage.
Water resource and climate enthusiasts would be intrigued by Germantown Dam's historical significance and engineering marvel in flood risk reduction. Its location along the Twin Creek and the collaboration between local and state agencies for regulation and maintenance make it a noteworthy site for understanding water management practices. With its high hazard potential and importance in the region's water infrastructure, Germantown Dam stands as a testament to the ongoing efforts to balance water resource management and environmental conservation for sustainable development.
Dam data reference
Condition Assessment
- Satisfactory
- No 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.
- 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.
- 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.
Hazard Potential Classification
- High
- Dams 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, environmental 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.
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Germantown Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Twin Creek Near Germantown Oh | 109 cfs | → |
| Great Miami River At Miamisburg Oh | 1,580 cfs | → |
| Great Miami River Below Miamisburg Oh | 5,170 cfs | → |
| Great Miami River At Middletown Oh | 2,370 cfs | → |
| Great Miami River At Franklin Oh | 1,950 cfs | → |
| Holes Creek Near Kettering Oh | 19 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Germantown Dam.
Boat launches
- Rush Run Wildlife Area
- Kennedy Road Municipio De St. Clair
- Black St. Ramp - Combs Park
- Caesar Creek Wellman Meadows Boat Ramp
- Caesars Creek Furnas Shores Boat Ramp
- Caesars Creek North Pool Boat Ramp
Campgrounds
- Woodland Trails Scout Reservation
- Camp Stonybrook
- Camp Lebanon Retreat Center
- Windy Heights
- Berry Patch
- Beeches
Fishing spots
Track Germantown Dam in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Germantown Dam
Where does the data for Germantown Dam come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the High hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this dam, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Germantown Dam.