Hidden Valley dam
Hidden Valley
Hidden Valley is a privately owned earth dam located in Williamson County, Tennessee, along Fulton Creek. Built in 1974, this dam serves multiple purposes including fire protection, stock water supply, and a small fish pond. With a hydraulic height of 19.9 feet and a structural height of 22.4 feet, Hidden Valley has a storage capacity of 20 acre-feet and covers a surface area of 1.8 acres, making it a vital resource for the surrounding area.
Despite its importance, Hidden Valley poses a high hazard potential due to its condition being rated as "Not Rated." The dam has a moderate risk level according to a risk assessment, with an inspection frequency of 5 years. While there are no outlet gates or locks associated with the dam, its uncontrolled spillway type raises concerns in the event of heavy rainfall or flooding. As climate change continues to impact water resources, enthusiasts and stakeholders should closely monitor Hidden Valley and advocate for its proper maintenance to ensure the safety of the community and the environment.
In the absence of state regulation or inspection, Hidden Valley's management and risk mitigation measures remain unclear. It is crucial for responsible authorities to prioritize the assessment and maintenance of this structure to prevent potential disasters. With the nearby Nashville District keeping a watchful eye on the dam, it is essential for water resource and climate enthusiasts to stay informed and engaged in the preservation of Hidden Valley for the benefit of all stakeholders and the surrounding ecosystem.
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 Hidden Valley -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Harpeth River Below Franklin | 31 cfs | → |
| Harpeth River At Franklin | 14 cfs | → |
| Harpeth River At Bellevue | 41 cfs | → |
| Mill Creek Near Nolensville | 801 cfs | → |
| Browns Creek At State Fairgrounds At Nashville | 5 cfs | → |
| Richland Creek At Charlotte Ave | 6 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Hidden Valley.
Boat launches
- Cleeces Ferry Boat Ramp
- Hamilton Creek Park, Nashville
- Smith Springs Road Nashville-Davidson
- Anderson Road Nashville-Davidson
- Heartland Park Boat Ramp
- Old Hickory Boulevard Nashville-Davidson
Campgrounds
- Camping Municipal
- Anderson Road - J. Percy Priest Reservoir
- Seven Points - J. Percy Priest Reservoir
- Backcountry Campsite 1
- Poole Knobs - J. Percy Priest Reservoir
- Woodland Shelter
Paddle runs
Track Hidden Valley 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 Hidden Valley
Where does the data for Hidden Valley 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 Hidden Valley.