Key facts: Overland Park
- Homes built since the 1990s often have family rooms, baths and theaters below grade.
- Creek and surface water are generally outside homeowners coverage, and NFIP policies usually take 30 days to start.[4]
- Most of Overland Park drains to the Blue River by way of Indian Creek, Tomahawk Creek and others.[1]
What a sump failure does to a finished lower level
Homes built since the 1990s often have family rooms, baths and theaters below grade. A sump pump lifts water out of a pit under the basement floor,[2] so power loss during a storm is the classic failure. A battery backup and a high-water alarm are small additions compared with replacing what they protect.
A closer look in Overland Park
Creeks and fast-rising streets
Flood claims recorded in Johnson County
Overland Park sits in Johnson 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 | 1,155 |
| Year with the most claims | 1982 (160) |
| Largest named event | Not A Named Storm (147) |
| Claims outside high-risk A and V zones | 48% |
| Claims on buildings built before 1975 | 77% |
County-wide counts of insured claims only. Uninsured losses, burst pipes and appliance leaks are not in this data.
What the Overland Park claim record shows
For Overland Park homes, the local precedents are the events behind the most Johnson County claims: Not A Named Storm (147 claims), Flooding (131 claims) and Midwest Flooding (75 claims).
About 48% 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 Overland Park home stays dry.
If your Overland Park home is older, note that buildings from before 1975 make up 77% 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 Johnson County
FEMA lists 12 federal declarations covering Johnson County. The most common types are severe storm (5), biological (2) and flood (2). The latest are Severe Storms, Straight-Line Winds, Tornadoes, and Flooding in 2023, Covid-19 Pandemic in 2020 and Covid-19 in 2020. If your loss falls inside an open declaration, Overland Park homeowners can check DisasterAssistance.gov as well as their insurance policy.
Overland Park weather and your home
Weather records for Overland Park from 2015 through 2024 average 45 inches of precipitation a year, and May and August are the wettest months. The area averages 10.2 days a year with an inch or more.
Overland Park falls to 20°F or below on about 26 nights a year, which puts pipes in exterior walls, crawl spaces and garages at risk.
When rain falls in Overland Park
Seasonal averages for Overland Park, 2015 through 2024. Plan roof, gutter and sump pump checks before the wettest stretch.
| Season | Average | Share of year |
|---|---|---|
| January to March | 6.9 in | 15% |
| April to June | 16.3 in | 36% |
| July to September | 13.6 in | 30% |
| October to December | 8.4 in | 19% |
Modeled from Open-Meteo historical weather data. Precipitation includes rain and melted snow.
Overland Park home checklist from these records
- Don't rely on recent quiet years. Only 13% of Johnson County claims date from 2015 or later, so older floods still show what can happen.
- Insulate exposed pipes before 26-plus hard-freeze nights arrive, and know your main shutoff.
- Test any sump pump before May, since Overland Park averages 10 days a year with an inch or more.
- Keep dated photos of each room. After Not A Named Storm, 147 insured Johnson County owners filed claims at about the same time.
What to tell the Overland Park contractor
- Whether the sump is running
- Whether power was out
- How much finished space is wet
Services Overland Park callers ask about
Questions
Overland Park water damage questions
Does my policy cover a sump overflow?
Often only with a water backup endorsement. Read yours or ask your agent.
Do you cover Olathe and Lenexa?
Yes, covered ZIP codes on file include Leawood, Prairie Village, Mission, Olathe and Lenexa.