Mckinnon dam
Mckinnon
Mckinnon, located in Marshall County, Tennessee, is a privately owned Earth dam constructed in 1973 by the USDA NRCS for the primary purpose of creating a Fish and Wildlife Pond. With a hydraulic height of 19 feet and a structural height of 25 feet, the dam stands along the East Fork Bradshaw Creek. It has a storage capacity of 55 acre-feet, with a normal storage level of 30 acre-feet, covering a surface area of 4 acres and draining a small 0.1 square mile watershed.
Despite being deemed as having a significant hazard potential, the dam's condition assessment is currently not rated, and its last inspection was conducted in September 2017. Although the dam is not state-regulated or permitted, it falls under the jurisdiction of the Tennessee state and is not subject to regular inspections, enforcement, or permitting. The spillway type for Mckinnon is listed as "Uncontrolled," and it has no outlet gates or associated locks.
For water resource and climate enthusiasts, Mckinnon presents an intriguing case study in dam management and risk assessment. With its moderate risk level and lack of formal emergency action plan, there is a need for continued monitoring and evaluation to ensure the safety and integrity of the structure. As a critical habitat for fish and wildlife, as well as a recreational area, Mckinnon serves as a reminder of the importance of sustainable water resource management practices in the face of changing climate conditions.
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 Mckinnon -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Cane Creek Near Howell | 0 cfs | → |
| Elk River Above Fayetteville | 265 cfs | → |
| Big Rock Cr At Double Bridges | 3 cfs | → |
| Fountain Creek Near Fountain Heights | 3 cfs | → |
| Duck River Above Milltown | 157 cfs | → |
| Duck River Near Shelbyville | 138 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Mckinnon.
Boat launches
- Vales Mill Road 1300-1368, Pulaski
- Sowell Mill Pike 3181-3183, Columbia
- Lillard's Mill Launch Area
- Champ Road 48-142, Kelso
- Howards Bridge Boat Access
- Veto Road 2156, Prospect
Campgrounds
Fishing spots
- Fayetteville Old Stone Bridge
- Madison County Lake
- Tva Public Land
- Crowder Slough
- Buckeye Pond
- Brotherick Branch
Paddle runs
More reservoirs
Track Mckinnon 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 Mckinnon
Where does the data for Mckinnon 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 Mckinnon.