Dam Report

Kelley dam

Tennessee, USA Pemberton Branch Hazard Significant
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Tonight low
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Dam height
23ft
Hazard rating
Significant
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Kelley -- None dam
Kelley None · Pemberton Branch
About this dam

Kelley

Kelley is a privately owned earth dam located in Bledsoe, Tennessee, along the Pemberton Branch. Built in 1969, this dam stands at a hydraulic height of 18 feet and a structural height of 23 feet, with a length of 242 feet. It has a storage capacity of 22 acre-feet and a surface area of 3 acres, serving a drainage area of 0.32 square miles. The dam is classified as having a significant hazard potential, with a moderate risk assessment rating.

Despite being privately owned, Kelley does not fall under state jurisdiction or regulation, with no state permitting, inspection, or enforcement in place. The dam is not regularly rated for its condition and does not have an Emergency Action Plan (EAP) prepared. In terms of its operation, Kelley has no associated locks, spillways, or outlet gates. The last inspection conducted on Kelley was in September 2017, with a scheduled inspection frequency of 5 years.

Overall, Kelley presents an interesting case study for water resource and climate enthusiasts, showcasing the complexities of privately owned dams in the United States. With its significant hazard potential and moderate risk assessment, there is a need for continued monitoring and evaluation to ensure the safety and integrity of this earth dam. As the dam is not regulated by state authorities, it highlights the importance of proactive risk management measures and emergency preparedness for private dam owners to mitigate potential hazards and protect downstream communities and ecosystems.

StateNone
River / streamPemberton Branch
NID IDTN00713
Owner typePrivate
Dam typeEarth
Year built1969
Dam length242 ft
Max storage22 AF
Surface area3.0 ac
Drainage area0.3 sq mi
Hazard potentialSignificant
ConditionNot Rated
Last inspectionMon, 25 Sep 2017 00:00:00 GMT

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.
Detailed forecast

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.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

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.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Regional inflow

Nearby streamflow gauges

USGS streamgauges around Kelley -- inflows here typically show up in storage 24-72 hours later.

Track Kelley 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.

FAQ

About Kelley

Where does the data for Kelley 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.

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