Dam Report

Pomona Quarry Dam Lower dam

North Carolina, USA Long Branch-Tr Hazard Low
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Tonight low
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Dam height
28ft
Hazard rating
Low
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Pomona Quarry Dam Lower -- None dam
Pomona Quarry Dam Lower None · Long Branch-Tr
About this dam

Pomona Quarry Dam Lower

Pomona Quarry Dam Lower in High Point, North Carolina is a state-regulated dam with a low hazard potential and a satisfactory condition assessment. The dam, located on Long Branch-Tr river, stands at a hydraulic height of 24.8 feet and a structural height of 28 feet. With a normal storage capacity of 69 acre-feet and a maximum storage capacity of 78 acre-feet, the dam covers a surface area of 7 acres and drains an area of 80 acres.

Owned by a non-listed entity and falling under the jurisdiction of the North Carolina Department of Environmental Quality's Dam Safety Program, Pomona Quarry Dam Lower serves a primary purpose that is classified as 'Other'. The dam, constructed with earth materials, has a length of 300 feet and does not have a spillway or outlet gates. With the last inspection conducted in March 2016, the dam is scheduled for inspections every 5 years to ensure its continued safe operation and to mitigate any potential risks associated with its presence in the area. For water resource and climate enthusiasts, Pomona Quarry Dam Lower presents an interesting case study in dam management and regulation within the state of North Carolina.

StateNone
River / streamLong Branch-Tr
NID IDNC02798
Owner typeNot Listed
Primary purposeOther
Dam length300 ft
Max storage78 AF
Normal storage69 AF
Surface area7.0 ac
Drainage area80.0 sq mi
Hazard potentialLow
ConditionSatisfactory
Last inspectionTue, 01 Mar 2016 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 Pomona Quarry Dam Lower -- inflows here typically show up in storage 24-72 hours later.

Track Pomona Quarry Dam Lower 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 Pomona Quarry Dam Lower

Where does the data for Pomona Quarry Dam Lower 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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