Dam Report

Lake Vonda dam

Tennessee, USA Cub Creek Hazard Significant
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Dam height
48ft
Hazard rating
Significant
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Lake Vonda -- None dam
Lake Vonda None · Cub Creek
About this dam

Lake Vonda

Lake Vonda, located in Hardeman, Tennessee, is a private dam regulated by the Tennessee Safe Dams Program. Built in 1973, this Earth type dam stands at a height of 47.7 feet with a hydraulic height of 41.9 feet. The dam has a storage capacity of 630 acre-feet, with a normal storage level of 420 acre-feet and a surface area of 33 acres. The dam is situated on Cub Creek and is under the jurisdiction of the state of Tennessee for permitting, inspection, and enforcement.

With a significant hazard potential and a satisfactory condition assessment as of October 2020, Lake Vonda poses a moderate risk (level 3) according to the data available. The dam has an uncontrolled spillway type and no outlet gates, with no associated locks for navigation. Despite its risk level, the dam has not undergone any modifications in recent years and has a regular inspection frequency of every 2 years to ensure its structural integrity and safe operation.

For water resource and climate enthusiasts, Lake Vonda offers a fascinating case study of a privately owned dam in Tennessee, showcasing the importance of state regulation and inspection in ensuring the safety and maintenance of critical infrastructure. The dam's location on Cub Creek and its role in storing water for various purposes highlight the interconnectedness of water resources management and climate resilience. As an earth type dam with a moderate risk level, Lake Vonda serves as a reminder of the ongoing need for proactive risk management measures to protect communities and the environment from potential dam failures.

StateNone
River / streamCub Creek
NID IDTN06938
Owner typePrivate
Dam typeEarth
Year built1973
Dam length766 ft
Max storage630 AF
Normal storage420 AF
Surface area33.0 ac
Drainage area0.3 sq mi
Hazard potentialSignificant
ConditionSatisfactory
Last inspectionTue, 06 Oct 2020 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 Lake Vonda -- inflows here typically show up in storage 24-72 hours later.

Track Lake Vonda 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 Lake Vonda

Where does the data for Lake Vonda 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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