Key facts: Keene
Floods
Two floods within a year
The October 2005 event produced record rain and flooding, with totals of around 12 inches near Keene. [1] Seven months later, May 2006 brought another significant flood. [1] Some households dealt with cleanup twice, and homes that dried quickly the first time faced the same questions again.
The lesson is that a wet year can stack events. Ground already saturated has little room to absorb more, and the Ashuelot drains almost the whole city. [1] July 2023 storms also affected New Hampshire, [2] and local reports noted heavy rain in Keene that month.
Common situations
Water damage typical around Keene
General patterns.
River or brook water in cellars
Surface water and rising groundwater reach foundations.
Read moreRental unit leaks
Keene State College makes rentals common, so landlords and tenants must coordinate.
Read moreWinter roof leaks
About 60 inches of snow a season tests attics and eaves.
Mold after slow drying
Repeated wetting can leave older materials vulnerable.
Read more

Compare
Where the water came from, and what it changes
Generalized.
| Source | Treat as | Next step |
|---|---|---|
| Ashuelot or brook flooding | Contaminated | Remove soaked porous items |
| Groundwater seepage | Depends on path | Pump, dry, manage humidity |
| Burst pipe | Clean at first | Dry quickly |
| Ice dam | Fairly clean, but check | Dry attic and ceiling |
How it usually runs
After flooding in a Keene home
Permits
City offices
Keene runs its own city government. Ask about permits and floodplain rules before substantial repairs, particularly near the Ashuelot.
Nearby
Areas near Keene
Up the Connecticut River valley are Lebanon and Hanover. To the east lie Nashua and Manchester.
The river
How the Ashuelot moves through the region
The Ashuelot begins at Butterfield Pond in Pillsbury State Park, near Washington, and runs about 64 miles to the Connecticut at Hinsdale, making it the longest Connecticut River tributary in New Hampshire. [5] It passes Ashuelot Pond, then Keene and Swanzey, turning west at Winchester. [5] It is dammed for hydropower at several places, including Keene. [5] Rain far to the north can therefore reach the city many hours later, which helps when forecasts are watched closely.
Tributaries matter too. The Branch and the South Branch of the Ashuelot both feed the main river. [5] Rain concentrated on one of these sub-basins can raise water on a street miles from the main stem. Keene's central area lies on broad, flat ground, which means water can spread out and take a while to go down. Compare your property with official flood maps and do not base your plans on any one past flood, since 2005 and 2006 behaved differently.
College rentals
Older houses divided into student apartments
Keene State College began as Keene Teachers College and took its current name in 1963. [1] Older homes near campus and downtown may have been divided into several units over the decades, with altered plumbing, added bathrooms and basement rooms. Water tends to find these changes. A bathroom built into a former bedroom may have drain lines in places the original builder never intended, and a leak there can mark ceilings in a surprising location.
Basement bedrooms deserve particular attention. After any water entry, damp walls, carpet and low ceilings can make for poor air, and people should not sleep in a wet room. Landlords should also consider egress and safety when rebuilding, and check with the city about any requirements. Tenants should photograph belongings and check whether a renters policy is in place; parents' policies may or may not extend to students.
Downtown
Main Street and Central Square buildings
The city carried out major improvements to Main Street and Central Square in 1987, [1] and the wide main street with its older commercial blocks is part of the city's identity. Many of those buildings have basements that sit fairly low, and water coming in at street level can reach stored goods and mechanical systems. Business owners should keep inventory and records up off the floor, and they should know where the shutoffs are for water, gas and power.
Flood-prone basements often work better when used as simply as possible. Moving electrical panels and heating equipment up, where it can be done, reduces the time a building is out of action after a flood. If you are rebuilding after damage, ask about flood-resistant materials for lower levels, and speak with the city about any floodplain rules that apply before you start.
Climate
Keene's weather extremes
Public climate figures for the city. [1]
- About 46 inches of precipitationSpread across the year, including heavy summer storms.
- About 60 inches of snowWith 112.5 inches in the snowiest season cited, 2002 to 2003.
- Very cold nightsSources list a record low of −31°F or −35°F, a reminder that exposed pipes face a real test.
- Summer heatJuly highs average 82°F, so cool cellars attract condensation.
Twice flooded
Handling a second flood in the same house
The 2005 and 2006 events showed what happens when a house has barely recovered before water returns. Materials replaced the first time may be wet again, and drying records from before can be useful for comparison. If a house floods twice, it is worth rethinking what goes back in: paperless board low on the wall, tile or sealed concrete floors, and outlets and equipment raised above the likely level.
Insurance may treat repeat losses differently, and floodplain rules can apply if damage reaches a certain level. Ask your insurer and the city what applies, and keep records of what was done and when. Old stains can confuse things, so have readings done to show what is actually wet today. If your home flooded in those years, tell the contractor, as earlier repairs may affect what they find.
Compare
Comparing October 2005 and May 2006
From public accounts.
FAQ
Questions from Keene
My house flooded in 2005. Should I check anything now?
If you notice musty smells or stains, ask for readings. Old marks may be dry, but check to be sure.
I rent. Who handles the water damage?
Tell your landlord at once. The owner normally handles the building, and your belongings depend on your own coverage.
Is the Ashuelot the only risk?
No. Heavy rain and thaw can fill cellars well away from the river.
How much snow should I plan for?
About 60 inches in an average season, with 112.5 inches in 2002–2003. [1]
Can I reuse flood-soaked carpet?
Generally no. EPA guidance treats soaked porous items as likely discards. [4]
Nearby
More around Keene
Back to all of New Hampshire. Nearby pages: Concord, Laconia, Lebanon and Hanover, Manchester, Nashua, Portsmouth.
Related help for Keene: water extraction, structural drying, sewage backup cleanup, fire damage restoration and smoke damage cleanup. First time dealing with this? Read the first hours after water damage.

