Dam Report

Hickory Nut Lower Dam dam

North Carolina, USA Broad River Hazard Significant
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Tonight low
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Dam height
48ft
Hazard rating
Significant
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Hickory Nut Lower Dam -- None dam
Hickory Nut Lower Dam None · Broad River
About this dam

Hickory Nut Lower Dam

Hickory Nut Lower Dam, also known as Mirror Lake Lower, is a privately owned structure located in Cliffside, North Carolina. Built in 1974, this earth dam stands at a hydraulic height of 39.5 feet and a structural height of 47.5 feet, with a length of 250 feet. Its primary purpose is for recreation, offering a tranquil spot for water resource and climate enthusiasts to enjoy the beauty of the Broad River.

With a storage capacity of 240 acre-feet, Hickory Nut Lower Dam provides a surface area of 12 acres for recreational activities. Despite being classified as having a "significant" hazard potential, the dam is currently assessed to be in fair condition as of its last inspection in January 2019. The North Carolina Dam Safety Program oversees the regulation, inspection, and enforcement of this dam to ensure the safety of the surrounding community and the preservation of its recreational value.

Enthusiasts of water resources and climate will find Hickory Nut Lower Dam to be a fascinating structure that adds to the natural beauty of Rutherford County. Its construction has created a serene environment for recreation along the Broad River, offering a peaceful retreat for those looking to appreciate the intersection of water management and environmental conservation in North Carolina.

StateNone
River / streamBroad River
NID IDNC01389
Owner typePrivate
Primary purposeRecreation
Dam typeEarth
Year built1974
Dam length250 ft
Max storage240 AF
Normal storage140 AF
Surface area12.0 ac
Hazard potentialSignificant
ConditionFair
Last inspectionThu, 31 Jan 2019 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 Hickory Nut Lower Dam -- inflows here typically show up in storage 24-72 hours later.

Track Hickory Nut Lower 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 Hickory Nut Lower Dam

Where does the data for Hickory Nut Lower 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.