Dam Report

Mountain Valley Lake Dam dam

Virginia, USA Leatherwood Creek Hazard Undetermined
Today high
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Tonight low
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Dam height
42ft
Hazard rating
Undetermined
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Mountain Valley Lake Dam -- None dam
Mountain Valley Lake Dam None · Leatherwood Creek
About this dam

Mountain Valley Lake Dam

Mountain Valley Lake Dam, also known as Foley Dam, is a private-owned structure located in Henry, Virginia. This recreational dam stands at a height of 41.81 feet and spans a length of 540 feet, creating a surface area of 17 acres. Situated on Leatherwood Creek, the dam provides not only a scenic backdrop for outdoor enthusiasts but also serves as a vital resource for water storage, with a maximum capacity of 351 acre-feet.

Managed by the Department of Conservation and Recreation in Virginia, Mountain Valley Lake Dam is regulated, inspected, and enforced to ensure its safety and compliance with state guidelines. Although its hazard potential is labeled as undetermined and its condition has not been rated, the dam's emergency action plan readiness, risk assessment, and management measures remain unassigned. Despite these uncertainties, the dam continues to be a popular spot for recreational activities, offering a serene environment for visitors to enjoy.

With its picturesque location and recreational purposes, Mountain Valley Lake Dam stands as a testament to the harmonious coexistence of water resource management and climate sustainability. As water and climate enthusiasts explore the depths of Leatherwood Creek and witness the beauty of this earth dam, they are reminded of the importance of preserving such natural wonders for future generations to enjoy.

StateNone
River / streamLeatherwood Creek
NID IDVA089019
Owner typePrivate
Primary purposeRecreation
Dam typeEarth
Dam height42 ft
Dam length540 ft
Max storage351 AF
Normal storage289 AF
Surface area17.0 ac
Drainage area0.7 sq mi
Hazard potentialUndetermined
ConditionNot Rated

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 Mountain Valley Lake Dam -- inflows here typically show up in storage 24-72 hours later.

Track Mountain Valley Lake Dam 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 Mountain Valley Lake Dam

Where does the data for Mountain Valley Lake Dam 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 Undetermined 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.