Dam Report

Rivanna Woods Dam dam

Virginia, USA Rivanna Hazard Low
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Dam height
32ft
Hazard rating
Low
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Rivanna Woods Dam -- None dam
Rivanna Woods Dam None · Rivanna
About this dam

Rivanna Woods Dam

Rivanna Woods Dam, located in Fluvanna, Virginia, is a privately owned earth dam that serves primarily for recreational purposes. The dam stands at a height of 31.5 feet, with a storage capacity of 83 acre-feet and a surface area of 6.5 acres. It is situated along the Rivanna River, within the jurisdiction of the Department of Conservation and Recreation in Virginia.

Despite its low hazard potential and satisfactory condition assessment, Rivanna Woods Dam is regulated, inspected, and permitted by the state, ensuring its safety and compliance with standards. The dam has a drainage area of 0.32 square miles and a normal storage capacity of 48 acre-feet. With no associated locks or spillways, the dam's last inspection took place in February 2020, with an inspection frequency of once per year.

Owned privately, Rivanna Woods Dam provides a tranquil recreational spot for enthusiasts to enjoy the natural beauty of the area. Its location within the Norfolk District and under the supervision of state regulatory agencies ensures that the dam continues to fulfill its intended purpose while maintaining safety and environmental standards for the surrounding area.

StateNone
River / streamRivanna
NID IDVA065022
Owner typePrivate
Primary purposeRecreation
Dam typeEarth
Dam height32 ft
Dam length210 ft
Max storage83 AF
Normal storage48 AF
Surface area6.5 ac
Drainage area0.3 sq mi
Hazard potentialLow
ConditionSatisfactory
Last inspectionWed, 26 Feb 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 Rivanna Woods Dam -- inflows here typically show up in storage 24-72 hours later.

Track Rivanna Woods Dam in the Snoflo app

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FAQ

About Rivanna Woods Dam

Where does the data for Rivanna Woods 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 Low 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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