Dam Report

Harvin's Pond Dam dam

South Carolina, USA Tr-Swift Creek Hazard Significant
Today high
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Tonight low
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Dam height
13ft
Hazard rating
Significant
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Harvin's Pond Dam -- None dam
Harvin's Pond Dam None · Tr-Swift Creek
About this dam

Harvin's Pond Dam

Harvin's Pond Dam, located in Sumter, South Carolina, was completed in 1955 and stands at a height of 13 feet with a length of 280 feet. The dam serves primarily for recreational purposes, providing a storage capacity of 900 acre-feet and a surface area of 98 acres. The dam is constructed primarily of earth with a stone core and soil foundation, and it is regulated and inspected by the South Carolina Department of Health and Environmental Control.

Despite its age, Harvin's Pond Dam is categorized as having a significant hazard potential and a poor condition assessment as of its last inspection in April 2020. The dam is in need of maintenance and improvements to ensure its continued safety and effectiveness in managing water resources for the surrounding area. The emergency action plan for the dam was last revised in October 2020, indicating a level of preparedness for potential risks associated with the structure.

For water resource and climate enthusiasts, Harvin's Pond Dam presents an opportunity to explore the intersection of infrastructure, natural resources, and public safety. Understanding the history, design, and current condition of the dam can provide valuable insights into the challenges and considerations involved in managing water resources and mitigating risks associated with aging infrastructure. As efforts are made to address the dam's condition and hazard potential, stakeholders can engage in discussions and actions to ensure the long-term sustainability and resilience of water management systems in the region.

StateNone
River / streamTr-Swift Creek
NID IDSC01401
Owner typePrivate
Primary purposeRecreation
Dam typeEarth
Year built1955
Dam height13 ft
Dam length280 ft
Max storage900 AF
Normal storage650 AF
Surface area98.0 ac
Hazard potentialSignificant
ConditionPoor
Last inspectionTue, 28 Apr 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 Harvin's Pond Dam -- inflows here typically show up in storage 24-72 hours later.

Track Harvin's 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 Harvin's Pond Dam

Where does the data for Harvin's 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 Significant 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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