Key facts: Hockessin
- Hockessin's history starts in 1688, and old farms and a meetinghouse still stand near newer estates.[1]
- Red Clay Creek, a 12.7-mile tributary of White Clay Creek, runs through the valley east of town,[2] and Ida's 2021 remnants caused serious flooding in this part of the state.[4]
- After drying, the EPA advises keeping indoor humidity below 60 percent, ideally 30 to 50 percent.[3]
Valley creeks rise quickly
A closer look in Hockessin
Large finished basements
Bigger homes often mean bigger lower levels. After drying, the EPA advises keeping indoor humidity below 60 percent, ideally 30 to 50 percent.[3] A small hygrometer in a recovered basement tells you more than the smell does.
Flood claims recorded in New Castle County
Hockessin sits in New Castle County. FEMA publishes every National Flood Insurance Program claim with personal details removed, which gives a plain record of where water has reached insured buildings here.
| Measure | Count |
|---|---|
| Flood insurance claims on record | 1,575 |
| Year with the most claims | 2003 (263) |
| Largest named event | Hurricane Floyd (210) |
| Claims outside high-risk A and V zones | 32% |
| Claims on buildings built before 1975 | 80% |
County-wide counts of insured claims only. Uninsured losses, burst pipes and appliance leaks are not in this data.
What the Hockessin claim record shows
For Hockessin homes, the local precedents are the events behind the most New Castle County claims: Hurricane Floyd (210 claims), Hurricane Irene (144 claims) and Hurricane Ida (90 claims).
About 32% of claims with a recorded zone came from outside the high-risk A and V zones, so a moderate-risk label does not mean a Hockessin home stays dry.
If your Hockessin home is older, note that buildings from before 1975 make up 80% of county claims with a known build date. Many predate current flood maps, so inspect low outlets, ductwork and subfloors closely after any water event.
Federal disaster history for New Castle County
FEMA lists 17 federal declarations covering New Castle County. The most common types are hurricane (9), snowstorm (4) and biological (2). The latest are Remnants of Hurricane Ida in 2021, Tropical Storm Isaias in 2020 and Covid-19 Pandemic in 2020. If your loss falls inside an open declaration, Hockessin homeowners can check DisasterAssistance.gov as well as their insurance policy.
Hockessin weather and your home
Weather records for Hockessin from 2015 through 2024 average 52 inches of precipitation a year, and June and August are the wettest months. The area averages 11.1 days a year with an inch or more.
Hockessin falls to 20°F or below on about 16 nights a year, which puts pipes in exterior walls, crawl spaces and garages at risk.
When rain falls in Hockessin
Seasonal averages for Hockessin, 2015 through 2024. Plan roof, gutter and sump pump checks before the wettest stretch.
| Season | Average | Share of year |
|---|---|---|
| January to March | 11.4 in | 22% |
| April to June | 14.1 in | 27% |
| July to September | 14.7 in | 28% |
| October to December | 11.4 in | 22% |
Modeled from Open-Meteo historical weather data. Precipitation includes rain and melted snow.
Hockessin home checklist from these records
- Don't rely on recent quiet years. Only 15% of New Castle County claims date from 2015 or later, so older floods still show what can happen.
- Insulate exposed pipes before 16-plus hard-freeze nights arrive, and know your main shutoff.
- Test any sump pump before June, since Hockessin averages 11 days a year with an inch or more.
- Keep dated photos of each room. After Hurricane Floyd, 210 insured New Castle County owners filed claims at about the same time.
What to tell the Hockessin contractor
- Your community name
- Whether the basement is finished
- Whether a well serves the home
Services Hockessin callers ask about
Questions
Hockessin water damage questions
What humidity should a basement stay at?
Below 60 percent, and ideally 30 to 50 percent, says the EPA.[3]
Do you cover Winterthur and Yorklyn?
Yes, those addresses are in the coverage we hold on file. Calls connect to an independent contractor working this area.