Lilley Lake Dam dam
Lilley Lake Dam
Lilley Lake Dam, located in Warren County, Ohio, is a private recreational structure with a primary purpose of providing opportunities for outdoor activities. Constructed in 1954 by USDA, SCS designer Jack Garrison, this Earth dam stands at a height of 42.6 feet and has a length of 970 feet. With a storage capacity of 210 acre-feet, the dam serves as a key feature in the local landscape, offering a surface area of 9 acres for visitors to enjoy.
Despite its recreational value, Lilley Lake Dam poses a high hazard potential due to its poor condition assessment, as reported during the last inspection in April 2019. The structure is state-regulated and falls under the jurisdiction of the Ohio Department of Natural Resources, with permitting, inspection, and enforcement measures in place to ensure its safety. As a tributary to Halls Creek, the dam plays a crucial role in managing water resources in the area, with a drainage area of 0.05 square miles and a maximum discharge capacity of 45 cubic feet per second.
Given its historical significance and environmental impact, Lilley Lake Dam serves as a focal point for water resource and climate enthusiasts interested in understanding the complexities of dam management and maintenance. With a need for continued monitoring and potential risk management measures, this recreational structure highlights the importance of balancing human recreation with the preservation of natural ecosystems in the face of changing climate conditions.
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 Lilley Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| O'Bannon Creek Near Loveland Oh | 10 cfs | → |
| Great Miami River At Franklin Oh | 1,910 cfs | → |
| Great Miami River At Middletown Oh | 2,180 cfs | → |
| Little Miami River At Milford Oh | 630 cfs | → |
| Great Miami River Below Miamisburg Oh | 5,170 cfs | → |
| Mill Creek At East Sharon Rd At Sharonville Oh | 30 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lilley Lake Dam.
Boat launches
- Caesar Creek Wellman Meadows Boat Ramp
- Caesars Creek Furnas Shores Boat Ramp
- Caesars Creek North Pool Boat Ramp
- Caesar Creek State Park - Campground Ramp
- Caesars Creek Haines Boat Ramp
- Longworth Street 110, Milford
Campgrounds
Fishing spots
Track Lilley Lake 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 Lilley Lake Dam
Where does the data for Lilley Lake 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 Lilley Lake Dam.