Dam Report

The Willows Dam dam

Virginia, USA Hazard Undetermined
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Tonight low
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Dam height
20ft
Hazard rating
Undetermined
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The Willows Dam -- None dam
The Willows Dam None
About this dam

The Willows Dam

The Willows Dam in Virginia is a privately owned structure regulated by the Department of Conservation and Recreation. Situated in Clarke County, this dam stands at a height of 20 feet and has a storage capacity of 65.44 acre-feet. With a normal storage capacity of 33.48 acre-feet and a surface area of 5.4 acres, The Willows Dam plays a crucial role in managing water resources in the area.

Despite its undetermined hazard potential and not being rated for condition assessment, The Willows Dam remains an essential piece of infrastructure in the region. While specific details about its construction and modification history are not available, the dam is subject to state regulation, inspection, and enforcement, ensuring its operational safety and integrity. With its location in an environmentally sensitive area, The Willows Dam highlights the importance of maintaining and monitoring water resources in the face of changing climate patterns.

For water resource and climate enthusiasts, The Willows Dam presents a fascinating case study of a privately owned structure with significant storage capacity and regulatory oversight. Its presence in the Baltimore District and association with the Department of Conservation and Recreation underscore the collaborative efforts required to manage water resources effectively. As discussions around climate change and water management continue to evolve, The Willows Dam serves as a tangible example of the intersection between infrastructure, regulation, and environmental stewardship.

StateNone
NID IDVA043007
Owner typePrivate
Dam height20 ft
Dam length300 ft
Max storage65 AF
Normal storage33 AF
Surface area5.4 ac
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 The Willows Dam -- inflows here typically show up in storage 24-72 hours later.

Track The Willows 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 The Willows Dam

Where does the data for The Willows 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.

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