Dam Report

Lewis Lacy Pond dam

Tennessee, USA Turkey Creek Hazard Significant
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Dam height
17ft
Hazard rating
Significant
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Lewis Lacy Pond -- None dam
Lewis Lacy Pond None · Turkey Creek
About this dam

Lewis Lacy Pond

Lewis Lacy Pond, located in Garrett, Decatur, Tennessee, is a private water resource managed by the Nashville District of the US Army Corps of Engineers. Built in 1969, this Earth dam stands at a structural height of 16.9 feet with a hydraulic height of 13.6 feet, providing storage of up to 44 acre-feet of water from Turkey Creek. The pond covers a surface area of 5 acres and has a drainage area of 0.16 square miles.

With a significant hazard potential and a moderate risk assessment score of 3, Lewis Lacy Pond has not been rated for its condition and has not had an Emergency Action Plan reassessment since January 2019. Despite being unregulated and uninspected by the state, the pond serves as a vital water resource for the local community and wildlife. While it lacks associated structures and formal purposes, the pond remains a valuable asset for water storage and conservation in the region.

Enthusiasts of water resources and climate will find Lewis Lacy Pond to be a hidden gem in Decatur, Tennessee, offering a unique Earth dam structure with a controlled spillway. While there are no outlet gates or locks, the pond provides essential storage for up to 44 acre-feet of water, contributing to the overall water management system in the area. As a privately owned entity, it presents an opportunity for environmental stewardship and conservation efforts to ensure its continued function and safety for generations to come.

StateNone
River / streamTurkey Creek
NID IDTN03903
Owner typePrivate
Dam typeEarth
Year built1969
Dam length370 ft
Max storage44 AF
Normal storage27 AF
Surface area5.0 ac
Drainage area0.2 sq mi
Hazard potentialSignificant
ConditionNot Rated
Last inspectionMon, 14 Jan 2019 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 Lewis Lacy Pond -- inflows here typically show up in storage 24-72 hours later.

Track Lewis Lacy Pond 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 Lewis Lacy Pond

Where does the data for Lewis Lacy Pond 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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