Collins #1 dam
Collins #1
Collins #1 is a private earth dam located in Davidson County, Tennessee, near the city of Dozier Hollow. Completed in 1955, this structure stands at a hydraulic height of 39.5 feet and a structural height of 43 feet, with a length of 422 feet. It has a storage capacity of 410 acre-feet, with a normal storage level of 17 acre-feet. The dam is situated on the tributary of Indian Creek, serving as a vital reservoir for water resource management in the region.
Despite being privately owned, Collins #1 has a high hazard potential, with a moderate risk assessment rating. While the dam's condition assessment is currently listed as "Not Rated," it undergoes inspections every five years to ensure its structural integrity and safety. The spillway type is uncontrolled, with no outlet gates specified. The dam is part of the Nashville District and is not regulated by the state or federal agencies, highlighting its importance in local water resource management efforts.
Water resource and climate enthusiasts will find Collins #1 to be a fascinating structure in the Tennessee landscape, serving as a key component in the region's water supply infrastructure. With its high hazard potential and moderate risk assessment, the dam presents both challenges and opportunities for effective risk management and emergency preparedness. As a privately owned earth dam with significant storage capacity, Collins #1 plays a crucial role in maintaining water security and sustainability in Davidson County and beyond.
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 Collins #1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Richland Creek At Charlotte Ave | 158 cfs | → |
| Harpeth River At Bellevue | 2,270 cfs | → |
| Harpeth River Near Kingston Springs | 4,090 cfs | → |
| Whites Creek Near Bordeaux | 270 cfs | → |
| Cumberland River At Woodland St At Nashville | 7,180 cfs | → |
| Cumberland River At Nashville | 12,300 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Collins #1.
Boat launches
- Cleeces Ferry Boat Ramp
- Brush Creek Recreational Area
- Marrowbone Lake Road 6398, Nashville-Davidson
- Lock 2 Road, Nashville
- Heartland Park Boat Ramp
- Cheatham County
Campgrounds
- Camping Municipal
- Harpeth River Bridge
- Wildcat Shelter
- Woodland Shelter
- Montgomery Bell State Park
- Anderson Road - J. Percy Priest Reservoir
More reservoirs
Track Collins #1 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 Collins #1
Where does the data for Collins #1 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 Collins #1.