Lloyd Hahn Lake Dam dam
Lloyd Hahn Lake Dam
Lloyd Hahn Lake Dam, located in Vanderburgh County, Indiana, is a privately-owned structure designed by the USDA NRCS for recreational purposes. Completed in 1959, this earth dam stands at a height of 30.7 feet, with a hydraulic height of 30.6 feet and a structural height of 34 feet. The dam spans 575 feet in length and has a maximum storage capacity of 220 acre-feet, providing a surface area of 14.77 acres for recreational activities.
The dam, situated on an unnamed tributary of Bayou Creek, is regulated by the Indiana Department of Natural Resources and undergoes regular inspections for safety and compliance. With a hazard potential rated as high and a condition assessment of fair, Lloyd Hahn Lake Dam is considered to have a moderate risk level. Although there are no outlet gates, the dam features an uncontrolled spillway with a width of 42 feet to manage excess water flow. While the dam has not been modified in recent years, it continues to serve its primary purpose of recreation for the surrounding community.
Water resource and climate enthusiasts will be intrigued by the unique design and history of Lloyd Hahn Lake Dam, as well as its important role in providing recreational opportunities in the West Franklin area. As a privately-owned structure with state regulation and oversight, the dam's high hazard potential and fair condition assessment highlight the need for ongoing maintenance and risk management measures to ensure the safety of the surrounding environment and residents. Overall, Lloyd Hahn Lake Dam stands as a notable example of how dams can serve both practical and recreational purposes while requiring careful monitoring and maintenance to mitigate potential risks.
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 Lloyd Hahn Lake Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Big Creek Near Wadesville | 10 cfs | → |
| Wabash River At New Harmony | 34,200 cfs | → |
| Pigeon Creek Near Fort Branch | 3 cfs | → |
| Little Wabash River At Carmi | 5,470 cfs | → |
| Ohio River At Old Shawneetown | 259,000 cfs | → |
| Patoka River Near Princeton | 242 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lloyd Hahn Lake Dam.
Boat launches
- Dogtown Boat Ramp
- Angel Mounds Boat Ramp
- Ohio River Scenic Byway 221-383, Newburgh
- Euler Road, Chandler
- New Harmony Road 11699, Chandler
Campgrounds
Fishing spots
Paddle runs
- Russell Cemetery, Approx 1/4 Mile North Of Karbers Ridge Road To Proclamation Boundary, 1 Mile Nw Of Elizabethtown,Il
- Wallace Cemetery Approx 2.5 Miles Nw Of Herod, Il To Confluence With Ohio River At Golconda Jobs Corp Center
- Source, About 2 Miles East Of Delwood, Il (Sec 10, T11s, R6e) To Bridge At Eddyville Blacktop (Se1/4,Sec.16,T12s, R6e)
- 1 Minle Southwest Of Delwood, Il (Sec. 18, T11s, R13e) To Reesville, 1/4 Mile South Of The Confluence With Sugar Creek
Track Lloyd Hahn 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 Lloyd Hahn Lake Dam
Where does the data for Lloyd Hahn 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 Lloyd Hahn Lake Dam.