Dam Report

City Of Wilmington Sewage Lagoon dam

Delaware, USA Delaware River-Os Hazard High
Today high
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Tonight low
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Dam height
21ft
Hazard rating
High
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City Of Wilmington Sewage Lagoon -- None dam
City Of Wilmington Sewage Lagoon None · Delaware River-Os
About this dam

City Of Wilmington Sewage Lagoon

The City of Wilmington Sewage Lagoon is a gravity dam located in New Castle, Delaware, along the Delaware River. With a height of 20.95 feet and a storage capacity of 1370 acre-feet, this dam serves as a vital piece of infrastructure for wastewater management in the area. Despite its high hazard potential, the dam is currently assessed to be in fair condition as of 2008.

The primary purpose of the City of Wilmington Sewage Lagoon is listed as "Other," indicating its role in managing wastewater and preventing pollution in the surrounding environment. The dam's structural design includes earth and gravity components, with a buttress core type. With a surface area of 33.16 acres and a drainage area of 0.29 square miles, this dam plays a crucial role in safeguarding water resources and maintaining proper sewage treatment protocols.

Although the dam lacks a spillway and outlet gates, it is still equipped to handle high-risk scenarios and emergency situations. With a risk assessment rating of "High (2)," the City of Wilmington Sewage Lagoon stands as a critical piece of infrastructure for the local community, ensuring the proper management of sewage and upholding environmental standards in the region.

StateNone
River / streamDelaware River-Os
NID IDDE00073
Owner typeLocal Government
Primary purposeOther
Dam typeGravity
Dam height21 ft
Dam length570 ft
Max storage1,370 AF
Normal storage1,213 AF
Surface area33.2 ac
Drainage area0.3 sq mi
Hazard potentialHigh
ConditionFair

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 City Of Wilmington Sewage Lagoon -- inflows here typically show up in storage 24-72 hours later.

Track City Of Wilmington Sewage Lagoon 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 City Of Wilmington Sewage Lagoon

Where does the data for City Of Wilmington Sewage Lagoon 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.