Dam Report

Graves Millpond Dam dam

South Carolina, USA Little Black Creek Hazard Low
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Tonight low
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Dam height
14ft
Hazard rating
Low
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Graves Millpond Dam -- None dam
Graves Millpond Dam None · Little Black Creek
About this dam

Graves Millpond Dam

Graves Millpond Dam, located in Chesterfield, South Carolina, was completed in 1940 and serves as a recreational spot for water and climate enthusiasts alike. The earth dam, with a height of 14 feet and a length of 365 feet, creates a picturesque millpond on Little Black Creek, offering visitors a serene setting for fishing, boating, and wildlife observation. The dam has a maximum storage capacity of 188 acre-feet and a normal storage level of 73 acre-feet, covering a surface area of 24 acres.

Despite its historical significance and recreational value, Graves Millpond Dam is currently in poor condition, as reported during its last inspection in October 2017. The dam's hazard potential is assessed as low, with a moderate risk level of 3. While the dam is state regulated and inspected, there are no associated emergency action plans or risk management measures in place. With its deteriorating condition and moderate risk level, it is crucial for authorities to address the maintenance and safety concerns of Graves Millpond Dam to ensure the continued enjoyment and safety of visitors to this beloved recreational spot.

StateNone
River / streamLittle Black Creek
NID IDSC00042
Owner typePrivate
Primary purposeRecreation
Dam typeEarth
Year built1940
Dam height14 ft
Dam length365 ft
Max storage188 AF
Normal storage73 AF
Surface area24.0 ac
Hazard potentialLow
ConditionPoor
Last inspectionWed, 25 Oct 2017 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 Graves Millpond Dam -- inflows here typically show up in storage 24-72 hours later.

Track Graves 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 Graves Millpond Dam

Where does the data for Graves 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 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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