Dam Report

R.S. Jones Jr Upper Dam dam

North Carolina, USA Wallace Branch-Tr Hazard High
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Dam height
20ft
Hazard rating
High
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R.S. Jones Jr Upper Dam -- None dam
R.S. Jones Jr Upper Dam None · Wallace Branch-Tr
About this dam

R.S. Jones Jr Upper Dam

Located in Macon, North Carolina, the R.S. Jones Jr Upper Dam is a privately owned structure that serves as a recreational site along the Wallace Branch-Tr river. Standing at a hydraulic height of 15 feet and a structural height of 20 feet, this earth dam spans 235 feet with a storage capacity of 12 acre-feet. The dam's primary purpose is for recreation, offering a surface area of 1.5 acres for visitors to enjoy.

Despite its fair condition assessment as of November 2018, the R.S. Jones Jr Upper Dam poses a high hazard potential, emphasizing the importance of regular inspections and maintenance. The dam is regulated by the North Carolina Department of Environmental Quality's Dam Safety Program, ensuring that state permitting, inspection, and enforcement measures are in place to mitigate risks. While there have been no modifications in recent years, the dam remains a vital part of the local landscape, providing both recreational opportunities and water resource management in the area.

With its scenic location and crucial role in water management, the R.S. Jones Jr Upper Dam stands as a notable structure in Macon County. As climate change continues to impact water resources, the maintenance and regulation of such dams become increasingly essential. Enthusiasts of water resources and climate science can appreciate the significance of the R.S. Jones Jr Upper Dam in balancing recreation with safety and environmental stewardship in the region.

StateNone
River / streamWallace Branch-Tr
NID IDNC03329
Owner typePrivate
Primary purposeRecreation
Dam typeEarth
Dam length235 ft
Max storage12 AF
Normal storage5 AF
Surface area1.5 ac
Drainage area160.0 sq mi
Hazard potentialHigh
ConditionFair
Last inspectionThu, 29 Nov 2018 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 R.S. Jones Jr Upper Dam -- inflows here typically show up in storage 24-72 hours later.

Track R.S. Jones Jr Upper Dam in the Snoflo app

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FAQ

About R.S. Jones Jr Upper Dam

Where does the data for R.S. Jones Jr Upper 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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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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