Dam Report

Carnegie Lake Dam dam

New Jersey, USA Millstone River Hazard Significant
Today high
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Tonight low
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Dam height
28ft
Hazard rating
Significant
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Carnegie Lake Dam -- None dam
Carnegie Lake Dam None · Millstone River
About this dam

Carnegie Lake Dam

Carnegie Lake Dam, located in Kingston, New Jersey, is a privately owned structure built in 1900 primarily for recreation purposes. The dam, made of concrete, stands at a height of 28 feet and spans a length of 724 feet, creating a reservoir with a normal storage capacity of 1344 acre-feet. Situated on the Millstone River, the dam plays a crucial role in managing water resources and providing opportunities for outdoor activities in the area.

The dam has been identified as having a significant hazard potential but is currently in satisfactory condition, as assessed during the last inspection in November 2021. The New Jersey Department of Environmental Protection regulates the dam, ensuring its compliance with state regulations and conducting regular inspections. Despite its age, Carnegie Lake Dam continues to serve its intended purposes effectively, contributing to the environmental and recreational landscape of Mercer County.

With a drainage area of 159.1 square miles and a maximum discharge capacity of 14420 cubic feet per second, Carnegie Lake Dam plays a vital role in flood control and water management in the region. As climate change impacts water resources, the maintenance and proper functioning of such structures become increasingly important. Carnegie Lake Dam stands as a testament to the intersection of engineering, environmental stewardship, and recreational enjoyment, embodying the intricate balance between human needs and natural ecosystems.

StateNone
River / streamMillstone River
NID IDNJ00150
Owner typePrivate
Primary purposeRecreation
Dam typeConcrete
Year built1900
Dam height28 ft
Dam length724 ft
Max storage5,326 AF
Normal storage1,344 AF
Surface area245.0 ac
Drainage area159.1 sq mi
Hazard potentialSignificant
ConditionSatisfactory
Last inspectionThu, 11 Nov 2021 12:00:00 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 Carnegie Lake Dam -- inflows here typically show up in storage 24-72 hours later.

Track Carnegie 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 Carnegie Lake Dam

Where does the data for Carnegie 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 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.