Dam Report

Town Of Selbyville Wastewater Lagoon dam

Delaware, USA Polly Branch Hazard High
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Dam height
12ft
Hazard rating
High
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Town Of Selbyville Wastewater Lagoon -- None dam
Town Of Selbyville Wastewater Lagoon None · Polly Branch
About this dam

Town Of Selbyville Wastewater Lagoon

The Town of Selbyville Wastewater Lagoon in Sussex, Delaware, is a key facility owned by the local government that plays a crucial role in managing wastewater in the area. Located near Polly Branch, this lagoon serves as a gravity dam with a height of 12.42 feet and a storage capacity of 56 acre-feet. With a surface area of 4.53 acres and a drainage area of 2.19 acres, this lagoon has a fair condition assessment and a high hazard potential, emphasizing the importance of regular maintenance and monitoring.

Although not regulated by the state or federal agencies, the Town of Selbyville Wastewater Lagoon is a significant structure that supports the community's infrastructure. The dam, completed in an unspecified year, is designed to serve a primary purpose other than flood control or water storage. Despite its critical role in wastewater management, the lagoon lacks a spillway and outlet gates, which could potentially pose challenges in case of emergencies or excess water flow. It is essential for stakeholders to ensure that proper risk management measures are in place to mitigate any potential hazards associated with this facility.

In the hands of Lisa Blunt Rochester, the representative for the area, the Town of Selbyville Wastewater Lagoon stands as a vital piece of infrastructure in Sussex County. With a risk assessment rating of 2 on a scale of 1 to 5, indicating a high risk level, it is imperative for local authorities to prioritize the maintenance and upkeep of this facility to ensure the safety and well-being of the community and the environment. As climate change continues to impact water resources, facilities like the Selbyville Wastewater Lagoon play a crucial role in sustainable water management practices within the region.

StateNone
River / streamPolly Branch
NID IDDE00108
Owner typeLocal Government
Primary purposeOther
Dam typeGravity
Dam height12 ft
Dam length1,325 ft
Max storage56 AF
Surface area4.5 ac
Drainage area2.2 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 Town Of Selbyville Wastewater Lagoon -- inflows here typically show up in storage 24-72 hours later.

Track Town Of Selbyville Wastewater 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 Town Of Selbyville Wastewater Lagoon

Where does the data for Town Of Selbyville Wastewater 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.

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