Dam Report

Lake Orange Dam dam

North Carolina, USA East Fork Eno River Hazard High
Today high
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Tonight low
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Dam height
40ft
Hazard rating
High
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Lake Orange Dam -- None dam
Lake Orange Dam None · East Fork Eno River
About this dam

Lake Orange Dam

Lake Orange Dam, located in Hillsborough, North Carolina, serves as a crucial water supply source for the region. Completed in 1969, this earth dam stands at a structural height of 40 feet and has a hydraulic height of 25 feet, with a storage capacity of 1640 acre-feet. Situated on the East Fork Eno River, the dam plays a vital role in providing water to the surrounding communities, boasting a normal storage capacity of 1364 acre-feet and covering a surface area of 140 acres.

Managed by the local government, the dam is regulated and inspected by the North Carolina Department of Environmental Quality (NCDEQ) Dam Safety Program, ensuring its safety and functionality. Despite being classified as having a high hazard potential, the dam's condition assessment in 2018 deemed it satisfactory, with regular inspections scheduled every two years. While no spillway type or width is specified, the dam's maximum discharge capacity is recorded at 66 cubic feet per second, highlighting its importance in managing water flow and preventing flooding in the area.

Lake Orange Dam stands as a testament to sustainable water resource management, showcasing the collaborative efforts between local government agencies and environmental regulators to safeguard this critical infrastructure. With its significant role in water supply and conservation, the dam serves as a vital asset in ensuring the region's resilience against climate impacts and contributing to the overall well-being of the community.

StateNone
River / streamEast Fork Eno River
NID IDNC00773
Owner typeLocal Government
Primary purposeWater Supply
Dam typeEarth
Year built1969
Dam length1,100 ft
Max storage1,640 AF
Normal storage1,364 AF
Surface area140.0 ac
Drainage area5,850.0 sq mi
Hazard potentialHigh
ConditionSatisfactory
Last inspectionFri, 30 Mar 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 Lake Orange Dam -- inflows here typically show up in storage 24-72 hours later.

Track Lake Orange 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 Lake Orange Dam

Where does the data for Lake Orange 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.