Key facts: Delaware
Local risks
What drives damage in Delaware
Wilmington's waterfront and creek-side blocks flood quickly, while suburban basements more often suffer from failed sump pumps during the same storms.
Housing
Homes and buildings here
Wilmington has older brick rowhomes with basements. Newark has much University of Delaware rental housing, and Hockessin has larger homes with finished basements and sump pumps.
Common damage

Where to go next
Services people ask about
Start with water damage restoration, flooded basement cleanup or burst pipe water damage. Renters in Newark should tell their landlord first, then record their own belongings.
Service areas
Restoration service areas in Delaware
Cities and neighborhoods: Bear, Claymont, Delaware City, Hockessin, Middletown, New Castle, Newark, Wilmington.
Scope
Northern New Castle County is where these calls connect
This page covers the northern part of Delaware: Wilmington, Claymont, Newark, Hockessin, Bear, New Castle, Delaware City and Middletown. Kent and Sussex counties, including Dover and the beach towns, are not part of the listed area. If you are unsure about your address, ask at the start of the call.
The local water story is creeks, not the ocean. Brandywine Creek, Red Clay, White Clay and the Christina River rise quickly after heavy rain, and low ground along the Delaware River and the canal has its own concerns.
2021 flood
What Ida did to the Brandywine in Wilmington
Brandywine Creek crested at 23.14 feet in Wilmington on the morning of September 2, 2021, as Ida's remnants drained off the land. The previous record, 20.43 feet, dated only from 2014. The University of Delaware's Water Resources Center put the peak at 33,700 cubic feet per second, above the 29,000 recorded during Hurricane Agnes in 1972. Dozens of people were rescued, and the state requested a federal disaster declaration.
Two records in seven years are a good reason to look up your street, rather than rely on what a seller remembers. DNREC launched an online flood planning tool in 2024 that helps people see the flood risk for a specific property.
Local detail
Delaware communities and what sets each apart
Follow a town’s link for its own page.
| Place | Water to watch | Housing or history note |
|---|---|---|
| [Wilmington](/areas/delaware/wilmington/) | Brandywine and Christina | Brick rowhomes with basements, plus creek-side blocks that flooded in 2021 |
| [Claymont](/areas/delaware/claymont/) | Delaware River shore | Went from suburban resort to industrial working community |
| [Newark](/areas/delaware/newark/) | White Clay Creek, Christina | University rentals; in August 2020 Isaias shut roads and emptied a motel near the water |
| [Hockessin](/areas/delaware/hockessin/) | Red Clay Creek | Larger homes with finished basements and sump pumps |
| [Bear](/areas/delaware/bear/) | Suburban drainage | About 23,000 people in 2020, in a place that had 50 residents in 1890 |
| [New Castle](/areas/delaware/new-castle/) | Delaware River | City and state worked on a vulnerability assessment from 2017, and formed a Preparedness Task Force |
| [Delaware City](/areas/delaware/delaware-city/) | Delaware River, the canal | Small town of 1,885 residents in 2020; crews may travel from elsewhere in the county |
| [Middletown](/areas/delaware/middletown/) | Saturated ground in storms | Grew from about 6,200 people in 2000 to over 24,000 by 2021 |
Rowhomes and new builds
Two kinds of house, two kinds of leak
A Wilmington rowhome shares walls with neighbors and often has an older basement. Water may come through the wall line or up a floor drain, and repairs can involve the house next door. If the home predates 1978, expect lead paint questions; EPA rules apply to paid work that disturbs it.
Middletown and Bear skew much younger. Slab houses there often keep water heaters, washers and panels together in utility closets, so a failed connector can soak adjoining rooms quickly. Where there is a basement, the sump pump is the single point of failure, and a storm that knocks out power takes the pump with it. The sump pump guide covers why that happens.
First steps
Delaware creek flood or sump failure: an order of work
Your response depends on the water source. Clean supply water and creek water are different jobs.
- 1
Move away from rising creek water
Do not drive through flooded roads. Follow local evacuation advice.
- 2
Keep off the stairs until the power question is settled
If a basement is flooded above outlets, have the utility or an electrician deal with power first.
- 3
Do not rush a pump-out
FEMA has warned about pumping too quickly while soil outside is still saturated, since pressure can damage foundation walls. Let the contractor judge the timing.
- 4
Treat floor-drain water as sewage
Backups need a different protocol from a supply leak. Sewage backup cleanup explains it.
- 5
Keep carbon monoxide in mind
Generators and gas pumps go outdoors, well away from windows, doors and vents.
- 6
Begin the claim with pictures
Then phone (833) 610-0241 for an independent contractor, and settle the scope with them.
Insurance
Separate flood policies and the Delaware regulator
Delaware's Department of Insurance publishes information specifically on flood coverage, and it helps with consumer questions if a claim becomes difficult. The key point is one that Ida brought home in Wilmington: homeowners coverage generally does not pay for rising water. That takes a separate flood policy, and new policies often have a waiting period, so do not leave it until a storm is forecast.
Sump failures and backups are their own category. Many policies only cover them with an endorsement, and the wording matters; look for it before the next heavy rain.
After drying
Keeping a New Castle County basement dry
These are habits that fit the local climate, and none of them need a contractor.
- Keep indoor humidity under 60 percent; EPA suggests 30 to 50 percent as the ideal range.
- Clear gutters after the leaves drop, and extend downspouts away from the wall.
- Run a bucket of water into the sump before spring storms, and think about battery backup if outages are common on your street.
- Lift stored items and keep important documents off a basement floor. Plastic bins beat cardboard.
- Look up your address in DNREC’s flood planning tool before finishing a lower level.
Delaware questions
Questions New Castle County homeowners ask
Is there coverage in Dover or Rehoboth?
No. Listed coverage is in New Castle County only, and Kent and Sussex are outside it.
My street flooded in 2021. Should I worry about the walls now?
If repairs were rushed, wet insulation or framing may have been closed up. A musty smell or high moisture reading is a reason to have someone check; it does not prove anything by itself.
Can a nor’easter cause trouble this far from the beach?
Yes. Prolonged rain and wind can saturate ground, and low land near the Delaware River can be affected.
Sources and citations
- [1]U.S. EPA: A brief guide to mold, moisture and your home
- [2]Wikipedia: Brandywine Creek
- [3]Delaware Department of Insurance
- [4]Delaware Department of Insurance: Flood insurance information
- [5]Wikipedia: Christina River
- [6]Wikipedia: White Clay Creek
- [7]Wikipedia: Red Clay Creek
- [8]Wikipedia: Middletown, Delaware
- [9]Wikipedia: Newark, Delaware
- [10]Wikipedia: Delaware City, Delaware
- [11]Wikipedia: Bear, Delaware
- [12]Wikipedia: Wilmington, Delaware












