Luther #4 dam
Luther #4
Luther #4 is a private earth dam located in Gentry Park, Tennessee, along the TRIBBEAVER DAM CREEK. The dam, completed in 1950, stands at a hydraulic height of 21 feet and a structural height of 25 feet, with a length of 228 feet. It has a storage capacity of 20 acre-feet, a surface area of 1.5 acres, and serves a drainage area of 0.1 square miles. The dam is classified as having a high hazard potential and a moderate risk assessment.
Despite not being regulated by the state, Luther #4 undergoes inspections every five years, with the last inspection conducted in November 2020. The dam has an uncontrolled spillway type and no outlet gates. While its condition is currently not rated, the risk management measures and emergency action plan for Luther #4 are not specified in the data. Water resource and climate enthusiasts can find interest in studying the impact of this dam on the local ecosystem and the potential risks associated with its operation in the event of an emergency.
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 Luther #4 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Harpeth River Near Kingston Springs | 34 cfs | → |
| Copperas Branch Near Kingfield | 1 cfs | → |
| Piney River At Vernon | 79 cfs | → |
| Harpeth River At Bellevue | 41 cfs | → |
| Duck River At Hwy 100 At Centerville | 528 cfs | → |
| Harpeth River Below Franklin | 31 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Luther #4.
Boat launches
- Brush Creek Recreational Area
- Cheatham County
- Cleeces Ferry Boat Ramp
- Marrowbone Lake Road 6398, Nashville-Davidson
- River Trail Maury County
- Willie Shanes Road 115, Hickman County
Campgrounds
- Woodland Shelter
- Montgomery Bell State Park
- Wildcat Shelter
- Harpeth River Bridge
- Camping Municipal
- Tennessee Highway 50 Bicycle-Only Campground, At Milepost 408
Paddle runs
- Bethel Bridge On County Road 6174 To Confluence With Duck River
- The Henryville Bridge Crossing On County Road 6230 To Bethel Bridge On County Road 6174
More reservoirs
Track Luther #4 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 Luther #4
Where does the data for Luther #4 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 Luther #4.