Dam Report

Nicholas Lake Dam dam

North Carolina, USA Persimmon Creek Hazard Low
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Tonight low
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Dam height
27ft
Hazard rating
Low
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Nicholas Lake Dam -- None dam
Nicholas Lake Dam None · Persimmon Creek
About this dam

Nicholas Lake Dam

Nicholas Lake Dam, located in High Rock, North Carolina, is a local government-owned structure designed by the USDA NRCS and regulated by the NCDEQ Dam Safety Program. The dam, completed in 1969, serves primarily for recreational purposes along Persimmon Creek and features an earth core with stone foundations. With a hydraulic height of 23 feet and a structural height of 27 feet, the dam offers a maximum storage capacity of 110 acre-feet and a normal storage of 92 acre-feet, covering a surface area of 9 acres.

Although deemed to have low hazard potential, Nicholas Lake Dam has a moderate risk assessment rating of 3. The dam is inspected every 5 years, with the last assessment in September 2017, where its condition was listed as "Not Rated." The spillway type is uncontrolled, with uncontrolled outlet gates, and the dam has not been modified in recent years. Managed by the Natural Resources Conservation Service, the dam's risk management measures and emergency action plan status are currently unknown, highlighting the importance of regular monitoring and maintenance to ensure the safety of its surrounding community and water resources.

StateNone
River / streamPersimmon Creek
NID IDNC00385
Owner typeLocal Government
Primary purposeRecreation
Dam typeEarth
Year built1969
Dam length595 ft
Max storage110 AF
Normal storage92 AF
Surface area9.0 ac
Hazard potentialLow
ConditionNot Rated
Last inspectionTue, 26 Sep 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 Nicholas Lake Dam -- inflows here typically show up in storage 24-72 hours later.

Track Nicholas Lake Dam in the Snoflo app

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FAQ

About Nicholas Lake Dam

Where does the data for Nicholas Lake 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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