Dam Report

Arrowhead Lake Dam dam

North Carolina, USA Morgan Creek Hazard High
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Tonight low
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Dam height
35ft
Hazard rating
High
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Arrowhead Lake Dam -- None dam
Arrowhead Lake Dam None · Morgan Creek
About this dam

Arrowhead Lake Dam

Arrowhead Lake Dam, located in Sherwood Forest, North Carolina, is a privately owned structure primarily used for recreation purposes. This earthen dam spans 400 feet in length with a structural height of 35 feet, creating a surface area of 4.6 acres and a storage capacity of 63 acre-feet. The dam is situated on Morgan Creek and is regulated by the North Carolina Department of Environmental Quality's Dam Safety Program, ensuring compliance with state regulations for inspection, enforcement, and permitting.

Despite its satisfactory condition assessment, Arrowhead Lake Dam poses a high hazard potential due to its location and the potential impact of a dam failure on downstream areas. The dam has a designated emergency action plan (EAP) preparedness level, with the last revision dating back to February 2015. Regular inspections are conducted, with the most recent inspection occurring in March 2020, to assess the dam's integrity and safety measures. The dam's hazard potential and risk management measures are crucial aspects for water resource and climate enthusiasts to monitor and understand in the context of dam safety and environmental protection.

In the event of an emergency, it is essential for stakeholders and emergency responders to be aware of the emergency contacts and procedures outlined in the EAP. The dam's hazard potential, risk assessment, and risk management measures play a significant role in ensuring the safety of surrounding communities and the environment. With its location in Transylvania County and its regulated status by state authorities, Arrowhead Lake Dam serves as a focal point for water resource and climate enthusiasts interested in the intersection of recreational infrastructure and environmental stewardship.

StateNone
River / streamMorgan Creek
NID IDNC01378
Owner typePrivate
Primary purposeRecreation
Dam typeEarth
Dam length400 ft
Max storage63 AF
Normal storage33 AF
Surface area4.6 ac
Hazard potentialHigh
ConditionSatisfactory
Last inspectionFri, 27 Mar 2020 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 Arrowhead Lake Dam -- inflows here typically show up in storage 24-72 hours later.

Track Arrowhead Lake 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 Arrowhead Lake Dam

Where does the data for Arrowhead 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 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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