Dam Report

Williams Millpond Dam dam

North Carolina, USA Lewis Branch Hazard High
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Dam height
14ft
Hazard rating
High
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Williams Millpond Dam -- None dam
Williams Millpond Dam None · Lewis Branch
About this dam

Williams Millpond Dam

Williams Millpond Dam in Hallsville, North Carolina, is a privately owned earth dam on Lewis Branch, completed in 1938 for recreational purposes. The dam stands at a hydraulic height of 9 feet and a structural height of 13.6 feet, with a total length of 850 feet and a storage capacity of 144 acre-feet. Despite its age, the dam has a normal storage capacity of 120 acre-feet and covers a surface area of 25 acres, serving as a popular spot for outdoor activities.

However, recent data shows that the dam poses a high hazard potential and is currently in unsatisfactory condition, raising concerns about its safety and the potential risks it may pose to the surrounding area. The last inspection in February 2020 revealed the dam's deficiencies, prompting the need for further evaluation and potentially urgent maintenance to address any safety issues. With the dam being state-regulated and inspected, it is essential for authorities to take necessary enforcement actions and risk management measures to ensure the dam's integrity and prevent any potential emergencies.

As water resource and climate enthusiasts, it is crucial to monitor the maintenance and condition of Williams Millpond Dam closely to safeguard the surrounding community and environment from any possible dangers. With its historical significance and recreational value, efforts should be made to ensure the dam's structural integrity and safety measures are up to date to mitigate any potential risks and preserve its role as a popular recreational spot in Wayne County, North Carolina.

StateNone
River / streamLewis Branch
NID IDNC00942
Owner typePrivate
Primary purposeRecreation
Dam typeEarth
Year built1938
Dam length850 ft
Max storage144 AF
Normal storage120 AF
Surface area25.0 ac
Drainage area6,528.0 sq mi
Hazard potentialHigh
ConditionUnsatisfactory
Last inspectionWed, 05 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 Williams Millpond Dam -- inflows here typically show up in storage 24-72 hours later.

Track Williams Millpond 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 Williams Millpond Dam

Where does the data for Williams Millpond 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.

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