Dam Report

Holly Brear Dam dam

Virginia, USA Hazard Undetermined
Today high
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Tonight low
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Dam height
25ft
Hazard rating
Undetermined
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Holly Brear Dam -- None dam
Holly Brear Dam None
About this dam

Holly Brear Dam

Holly Brear Dam, located in Madison, Virginia, is a private water resource infrastructure regulated by the Department of Conservation and Recreation. With a structural height of 24.5 feet and a storage capacity of 54 acre-feet, this dam serves the primary purpose of water storage. Despite its undetermined hazard potential and lack of condition assessment, the dam remains under state jurisdiction and inspection, ensuring its safety and compliance with regulations.

Constructed by private owners, Holly Brear Dam stands as a vital component of the water management system in the region. The dam's ability to store 30.4 acre-feet of water and cover a surface area of 4.4 acres highlights its significance in mitigating water scarcity and supporting ecological balance. With its location in a picturesque landscape, the dam not only serves practical purposes but also enhances the natural beauty of its surroundings.

As water resource and climate enthusiasts, the intricate details of Holly Brear Dam's design and functionality provide a fascinating glimpse into the intersection of human ingenuity and environmental stewardship. Its role in water storage, regulation, and inspection reflects a commitment to sustainable water management practices, crucial in the face of changing climate patterns and increasing water demands. The dam's presence symbolizes the ongoing efforts to balance human needs with environmental preservation in the pursuit of a resilient and water-secure future.

StateNone
NID IDVA113020
Owner typePrivate
Dam height25 ft
Dam length250 ft
Max storage54 AF
Normal storage30 AF
Surface area4.4 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 Holly Brear Dam -- inflows here typically show up in storage 24-72 hours later.

Track Holly Brear 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 Holly Brear Dam

Where does the data for Holly Brear 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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Other water bodies near here

Snoflo-tracked reservoirs and dams within driving distance of Holly Brear Dam.

Premium feature

Favorites and alerts are part of Snoflo Premium. Save reservoirs, set storage thresholds, and get push notifications when conditions cross.

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Manage alerts in the Snoflo app

Custom alerts are configured in the iOS app -- favorite this dam, set a threshold, and you'll get a push the moment conditions cross.

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