Greystone dam
Greystone
Greystone, located in Dickson, Tennessee, is a privately owned earth dam completed in 1997 primarily used for irrigation purposes. Managed by the Tennessee Safe Dams Program, the dam stands at a structural height of 25 feet with a hydraulic height of 22 feet, providing a storage capacity of 63 acre-feet. With a surface area of 5.5 acres and a drainage area of 0.29 square miles, Greystone plays a crucial role in regulating water resources in the region.
Despite its significant hazard potential, Greystone has been assessed as being in satisfactory condition as of December 2020, with regular inspections and enforcement by the Tennessee regulatory agency. The dam's spillway type is uncontrolled, with a spillway width of 0 feet. With a moderate risk assessment rating of 3, Greystone showcases the importance of effective risk management measures for the sustainable utilization of water resources. As a key infrastructure for irrigation in the area, Greystone serves as a vital component in the local water resource management system.
With its strategic location in the Nashville District and its essential role in irrigation, Greystone stands as a testament to the importance of private dam ownership in ensuring water security and climate resilience. As climate change continues to impact water resources, dams like Greystone play a crucial role in managing and conserving water for agricultural and environmental sustainability in Tennessee.
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 Greystone -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Harpeth River Near Kingston Springs | 34 cfs | → |
| Piney River At Vernon | 79 cfs | → |
| Copperas Branch Near Kingfield | 1 cfs | → |
| Yellow Creek At Ellis Mills | 31 cfs | → |
| Sycamore Creek Near Ashland City | 14 cfs | → |
| Duck River At Hwy 100 At Centerville | 528 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Greystone.
Boat launches
- Cheatham County
- Brush Creek Recreational Area
- Cleeces Ferry Boat Ramp
- Marrowbone Lake Road 6398, Nashville-Davidson
- Willie Shanes Road 115, Hickman County
- Oak Street 173, Clarksville
Campgrounds
- Montgomery Bell State Park
- Woodland Shelter
- 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 Greystone 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 Greystone
Where does the data for Greystone 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 Greystone.