Ollo Lake Dam dam
Ollo Lake Dam
Ollo Lake Dam, located in Franklin, Indiana, was completed in 1994 and serves as a recreational spot for water resource and climate enthusiasts. The dam is privately owned and regulated by the Indiana Department of Natural Resources, with a primary purpose of creating a fish and wildlife pond for recreational activities. The dam is classified as an Earth dam, with a height of 44 feet and a length of 300 feet, holding a maximum storage capacity of 7 acre-feet.
Despite its recreational value, Ollo Lake Dam poses a high hazard potential due to its poor condition, as assessed in 2007. The dam has an uncontrolled spillway and is situated on an unnamed tributary of Salt Creek, with a moderate risk assessment rating. Emergency action plans and risk management measures for the dam are not currently available, highlighting the need for increased monitoring and maintenance to ensure the safety of the surrounding community and environment. With its scenic location and potential risks, Ollo Lake Dam presents a complex and intriguing case study for water resource and climate enthusiasts to explore.
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 Ollo Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Whitewater River At Brookville | 1,380 cfs | → |
| Whitewater River Near Alpine | 2,350 cfs | → |
| Flatrock River At St. Paul | 1,580 cfs | → |
| Brush Creek Near Nebraska | 149 cfs | → |
| East Fork Whitewater River At Abington | 2,350 cfs | → |
| Clifty Creek At Hartsville | 234 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Ollo Lake Dam.
Boat launches
- Bischoff Reservoir Launch
- Bonwell Hill Road 10064, Brookville
- Garr Hill Boat Ramp
- Egypt Hollow Boat Ramp
- Fairfield Boat Ramp
- Hanna Creek Boat Ramp
Campgrounds
- Franklin County Park
- Brookville Lake
- Mounds State Rec Area - Brookville Lake
- Quakertown State Rec Area - Brookville Lake
- Governor Bebb Preserve
- Campground A
Fishing spots
Track Ollo 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 Ollo Lake Dam
Where does the data for Ollo 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 Ollo Lake Dam.