Dam Report

Woodhall Dam dam

North Carolina, USA Tributary To Cowhorn Branch Hazard High
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Tonight low
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Dam height
13ft
Hazard rating
High
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Woodhall Dam -- None dam
Woodhall Dam None · Tributary To Cowhorn Branch
About this dam

Woodhall Dam

Woodhall Dam, located in Union, North Carolina, is a privately owned earth dam built in 2000 for the primary purpose of recreation. Standing at a hydraulic height of 12 feet and a structural height of 13.1 feet, this dam boasts a length of 320 feet and a storage capacity of 27 acre-feet. With a drainage area of 233 square miles and a maximum discharge of 424 cubic feet per second, Woodhall Dam plays a crucial role in managing water resources in the region.

Despite its fair condition assessment and high hazard potential, Woodhall Dam is regulated by the North Carolina Department of Environmental Quality and regularly inspected to ensure its safety and compliance with state regulations. The dam, situated on a tributary to Cowhorn Branch, serves as a vital recreational area with a surface area of 5.2 acres for outdoor enthusiasts. While the dam has not been modified in recent years, it remains a significant structure for both water resource management and climate-related activities in the area.

With a focus on maintaining public safety and promoting recreational opportunities, Woodhall Dam continues to be a key asset in Union, North Carolina. As efforts are made to monitor and manage the dam's risk factors, its role in water resource management and climate resilience remains essential. As a privately owned structure with state regulation, Woodhall Dam stands as a testament to the importance of balancing environmental conservation with recreational enjoyment in the region.

StateNone
River / streamTributary To Cowhorn Branch
NID IDNC06019
Owner typeNot Listed
Primary purposeRecreation
Dam typeEarth
Year built2000
Dam length320 ft
Max storage27 AF
Normal storage25 AF
Surface area5.2 ac
Drainage area233.0 sq mi
Hazard potentialHigh
ConditionFair
Last inspectionWed, 18 Dec 2019 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 Woodhall Dam -- inflows here typically show up in storage 24-72 hours later.

Track Woodhall 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 Woodhall Dam

Where does the data for Woodhall 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 High 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.