Glen Willow Lake Dam dam
Glen Willow Lake Dam
Glen Willow Lake Dam, located in Willowville, Ohio, is a privately owned structure regulated by the Department of Natural Resources. The dam, with a height of 18 feet and a length of 400 feet, serves primarily for recreational purposes, offering a storage capacity of 37 acre-feet and covering a surface area of 5.7 acres. Despite its significant hazard potential, the dam is currently in poor condition, as indicated by the last inspection in April 2019.
The dam, constructed as an earth-fill type, stands as a vital component of the local watershed, acting as a tributary to Shayler Run. Its operation and maintenance fall under state jurisdiction, with regular inspections carried out every five years to ensure safety standards are met. While the dam's emergency action plan and risk assessment status are unclear, its role in providing recreational opportunities and aiding in water resource management underscores the importance of addressing its maintenance needs to safeguard both the environment and the community.
For water resource and climate enthusiasts, Glen Willow Lake Dam presents a case study in balancing the benefits of recreation with the challenges of maintaining aging infrastructure. As climate change continues to impact water systems, ensuring the resilience of dams like Glen Willow becomes increasingly crucial. By staying informed about its condition and advocating for necessary improvements, enthusiasts can play a role in protecting this essential piece of Ohio's water infrastructure for generations to come.
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 Glen Willow Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| East Fork Little Miami River At Perintown Oh | 561 cfs | → |
| Little Miami River At Milford Oh | 3,810 cfs | → |
| Fourmile Creek At Poplar Ridge Rd Nr Alexandria | 11 cfs | → |
| Twelvemile Creek At Highway 1997 Nr Alexandria | 48 cfs | → |
| East Fork Little Miami River At Williamsburg Oh | 31 cfs | → |
| O'Bannon Creek Near Loveland Oh | 66 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Glen Willow Lake Dam.
Track Glen Willow 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 Glen Willow Lake Dam
Where does the data for Glen Willow 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 Significant 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 Glen Willow Lake Dam.