Havalakatu #1 dam
Havalakatu #1
Havalakatu #1 is a privately owned Earth dam located in Collier Bend, Tennessee. It was completed in 1875 and serves the purpose of regulating the flow of the TribJones Creek. With a structural height of 25.2 feet and a hydraulic height of 22.9 feet, the dam has a NID storage capacity of 64 acre-feet, with a normal storage capacity of 50 acre-feet. The dam covers a surface area of 5.5 acres and has a drainage area of 1.12 square miles.
Despite its age, Havalakatu #1 has been rated as having a low hazard potential and a moderate risk level. The dam has not been inspected since December 2016, with an inspection frequency of every 5 years. The spillway type is noted as "Uncontrolled," with no outlet gates specified. The risk management measures and emergency action plan status for the dam are currently unspecified, indicating potential areas for improvement in ensuring the safety and longevity of this vital water resource structure in the Nashville District.
For water resource and climate enthusiasts, Havalakatu #1 presents an intriguing case study of a historic dam that continues to play a crucial role in water management in Dickson, Tennessee. With its unique design features and risk assessment profile, this dam offers valuable insights into the challenges and opportunities associated with maintaining aging infrastructure in the face of changing climate conditions. As efforts to address water security and sustainability become increasingly urgent, understanding the condition and management of structures like Havalakatu #1 is essential for ensuring the resilience of our water resources in the years to come.
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 Havalakatu #1 -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Harpeth River Near Kingston Springs | 4,090 cfs | → |
| Sycamore Creek Near Ashland City | 524 cfs | → |
| Harpeth River At Bellevue | 2,270 cfs | → |
| Copperas Branch Near Kingfield | 1 cfs | → |
| Yellow Creek At Ellis Mills | 61 cfs | → |
| Richland Creek At Charlotte Ave | 158 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Havalakatu #1.
Boat launches
- Cheatham County
- Brush Creek Recreational Area
- Cleeces Ferry Boat Ramp
- Marrowbone Lake Road 6398, Nashville-Davidson
- Oak Street 173, Clarksville
- Lock 2 Road, Nashville
Campgrounds
- Wildcat Shelter
- Montgomery Bell State Park
- Woodland 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 Havalakatu #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 Havalakatu #1
Where does the data for Havalakatu #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 Low 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 Havalakatu #1.