Dam Report

Malvin Harrington Pond Dam dam

North Carolina, USA Jacks Creek-Tr Hazard Low
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Dam height
15ft
Hazard rating
Low
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Malvin Harrington Pond Dam -- None dam
Malvin Harrington Pond Dam None · Jacks Creek-Tr
About this dam

Malvin Harrington Pond Dam

Malvin Harrington Pond Dam, located in Ansonville, North Carolina, serves as a vital water supply structure within the region. Built in 1991, this earth dam stands at a structural height of 15.2 feet and has a hydraulic height of 12.2 feet, with a length of 660 feet. The dam holds a normal storage capacity of 11.4 acre-feet and has a maximum storage capacity of 150 acre-feet, covering a surface area of 1.7 acres.

Despite its low hazard potential and not being state-regulated, Malvin Harrington Pond Dam plays a crucial role in debris control and providing water supply for the area. The dam is situated on the Jacks Creek-Tr river/stream and is not under the jurisdiction of any state regulatory agency. Although the condition assessment of the dam is marked as 'Not Rated', it has undergone inspection as recently as May 2013. With no associated locks or spillways, the structure remains a key component in managing water resources for the local community.

Water resource and climate enthusiasts would find Malvin Harrington Pond Dam to be an intriguing example of a privately owned water supply infrastructure. With its construction aimed at fulfilling the purposes of debris control and water supply, the dam stands as a testament to the importance of maintaining and regulating such structures. While the dam's risk assessment and emergency preparedness details are not specified, its role in managing water resources in the region highlights the need for ongoing monitoring and maintenance to ensure its continued functionality and safety for the surrounding community.

StateNone
River / streamJacks Creek-Tr
NID IDNC04875
Owner typePrivate
Primary purposeWater Supply
Dam typeEarth
Year built1991
Dam length660 ft
Max storage150 AF
Normal storage11 AF
Surface area1.7 ac
Drainage area24.0 sq mi
Hazard potentialLow
ConditionNot Rated
Last inspectionThu, 02 May 2013 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 Malvin Harrington Pond Dam -- inflows here typically show up in storage 24-72 hours later.

Track Malvin Harrington Pond Dam in the Snoflo app

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FAQ

About Malvin Harrington Pond Dam

Where does the data for Malvin Harrington 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 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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Manage alerts in the Snoflo app

Custom alerts are configured in the iOS app -- favorite this dam, set a threshold, and you'll get a push the moment conditions cross.

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