Dam Report

Allsbrook Pond Dam dam

South Carolina, USA Tr-Hellhole Swamp Hazard High
Today high
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Tonight low
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Dam height
16ft
Hazard rating
High
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Allsbrook Pond Dam -- None dam
Allsbrook Pond Dam None · Tr-Hellhole Swamp
About this dam

Allsbrook Pond Dam

Allsbrook Pond Dam, also known as A B Allsbrook Dam, is a private-owned structure located in Horry, South Carolina. Completed in 1955, this earth dam stands at a height of 16 feet and spans 1510 feet in length, offering 66 acre-feet of storage capacity for recreational purposes. Situated on the TR-HELLHOLE SWAMP river system, the dam is regulated by SC DHEC and undergoes regular state inspections, enforcement, and permitting to ensure public safety.

Despite its recreational benefits, Allsbrook Pond Dam poses a high hazard potential and has been assessed to be in poor condition as of December 2020. The dam's Emergency Action Plan (EAP) status, risk assessment, and management measures remain unclear, raising concerns for potential risks and safety protocols in case of emergencies. With the dam's hazard potential and condition assessment in mind, continued monitoring and maintenance efforts are crucial to mitigate risks and ensure the safety of surrounding communities and the environment.

In the realm of water resource and climate enthusiasts, Allsbrook Pond Dam serves as a focal point for understanding the intersection of recreational infrastructure, regulatory oversight, and hazard management in the context of dam safety. Its location, design, and historical significance offer valuable insights into the challenges and responsibilities associated with managing water resources in the face of changing environmental conditions and increasing demands for sustainable development.

StateNone
River / streamTr-Hellhole Swamp
NID IDSC02010
Owner typePrivate
Primary purposeRecreation
Dam typeEarth
Year built1955
Dam height16 ft
Dam length1,510 ft
Max storage66 AF
Normal storage42 AF
Surface area8.0 ac
Hazard potentialHigh
ConditionPoor
Last inspectionTue, 08 Dec 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 Allsbrook Pond Dam -- inflows here typically show up in storage 24-72 hours later.

Track Allsbrook Pond 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 Allsbrook Pond Dam

Where does the data for Allsbrook Pond 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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