Dam Report

Atsion Lake Dam dam

New Jersey, USA Mullica River Hazard High
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Dam height
19ft
Hazard rating
High
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Atsion Lake Dam -- None dam
Atsion Lake Dam None · Mullica River
About this dam

Atsion Lake Dam

Atsion Lake Dam, located in Burlington, New Jersey, is a state-owned structure on the Mullica River with a primary purpose of recreation. Built in 1930, this earth dam stands at 19 feet tall and spans 590 feet in length, holding a normal storage capacity of 250 acre-feet of water. The dam covers an area of 85 acres and drains a watershed of 27 square miles, making it a significant feature in the region.

Despite its fair condition assessment and high hazard potential, Atsion Lake Dam is regularly inspected by the New Jersey Department of Environmental Protection to ensure its safety and compliance with state regulations. The dam has been deemed to meet emergency action plan guidelines, although specific details on risk management measures and inundation maps are not provided in the available data. With a maximum discharge capacity of 162 cubic feet per second, the dam plays a crucial role in managing water flow and providing recreational opportunities to the surrounding community.

Overall, Atsion Lake Dam serves as a vital infrastructure asset in Shamong Township, offering both recreational benefits and flood control functions. Its historical significance, combined with ongoing maintenance and inspections, underscores the importance of water resource management in the face of changing climate conditions. As a key feature on the Mullica River, this dam represents a balance between human recreation needs and environmental stewardship in the region.

StateNone
River / streamMullica River
NID IDNJ00041
Owner typeState
Primary purposeRecreation
Dam typeEarth
Year built1930
Dam height19 ft
Dam length590 ft
Normal storage250 AF
Surface area85.0 ac
Drainage area27.0 sq mi
Hazard potentialHigh
ConditionFair
Last inspectionFri, 07 May 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 Atsion Lake Dam -- inflows here typically show up in storage 24-72 hours later.

Track Atsion 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 Atsion Lake Dam

Where does the data for Atsion 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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