Flood water in a Keene basement comes from four places. Spring snowmelt from Mount Monadnock and the surrounding hills swelling the Ashuelot River and raising the groundwater table across Swanzey, Winchester and lower West Keene. A failed sump pump during a March thaw when 70 to 90 inches of winter snowfall is dumping into every drain tile at once. A burst copper supply line or ruptured washer hose that ran overnight. And heavy summer thunderstorms backing up a floor drain. On the first visit we pump before we measure, because an inch of standing water on a subfloor turns into 3 inches of swollen OSB in 6 hours.
The gear matters here. We run truck-mounted extractors that pull 100+ gallons per minute, not shop vacs. Monadnock Region basements are often tight, with low headroom and narrow bulkhead doors, so we pull long hose runs from the truck in the driveway down through a basement window or the bulkhead. Harrisville and Westmoreland farmhouses with 1800s granite-rubble foundations are the slowest to pump because the water hides in the gaps between the stones and keeps bleeding back into the pit for hours. Newer poured-concrete basements in Jaffrey and newer construction in West Keene pump out clean inside 2 to 4 hours.
Cutting what's lost is as important as pumping what's left. Fiberglass batt insulation in a basement wall is scrap once it's been saturated, no amount of drying brings it back. Same with MDF trim, particleboard cabinets, standard carpet pad and most engineered flooring. We cut 24 inches of drywall above the water line in a basement and 12 inches above the water line on a first floor, bag it, and haul it the same day so mold doesn't get a 72-hour head start. Solid hardwood, framing lumber, and plaster walls are usually savable with aggressive drying and daily moisture monitoring.
Category of water decides the whole scope. Clean water from a supply line, a washer, or a melting snowbank is Category 1 and can be dried without demolition in a lot of cases. Water that's sat more than 48 hours, water that came through drywall or insulation, or water from a dishwasher or washing machine drain line is Category 2 and needs soft materials cut. Water from a sewer backup, a toilet overflow with solids, or river flooding carrying soil and contaminants is Category 3 and everything porous that touched it comes out, period. We call the category on the first visit and the scope gets written against it.
What we handle
Emergency Basement Water Extraction
Truck-mounted pumps on site inside 90 minutes for flooded basements in Keene and Cheshire County. Standing water pumped the first hour to stop subfloor and sill-plate damage.
Snowmelt and Spring Flood Pump-Out
April snowmelt driving groundwater into Swanzey, Winchester and West Keene basements. Sump pit checks, perimeter extraction and temporary backup pumps for homes that flood every spring.
Sump Pump Failure Response
Dead sump pump during a storm, common in older Keene homes with 1980s pumps still in service. We pump out, install a temporary backup, and dry the basement so you can replace the pump on your schedule.
Storm and Heavy Rain Water Extraction
Summer thunderstorm floods from backed-up floor drains, overflowing window wells, and roof leaks dumping water into Downtown Keene apartments and West Keene ranches.
Commercial Flood Cleanup
Small storefronts, offices and multi-unit buildings along Main Street and the Monadnock Shopping Center area. After-hours pump-outs so the business opens in the morning.
Crawl Space Water Removal
Pumping and drying crawl spaces under 1800s Monadnock Region farmhouses where granite-rubble piers and dirt floors hold water for weeks without intervention.
How the job goes
1. Phone Intake and Shut-Off Guidance
You call, we ask where the water's coming from and whether the main is off. If it's not, we talk you through shutting it off while the truck's rolling. You get an arrival window, usually inside 90 minutes.
2. On-Site Category Call and Photo Log
Crew arrives, water category called on a 1 to 3 scale, water line marked, full photo log for insurance. Takes 20 to 30 minutes before pumping starts.
3. Water Extraction
Truck-mounted pumps pulling 100+ gallons per minute on standing water. Most basement pump-outs finish in 2 to 6 hours depending on depth and foundation type.
4. Demo and Drying Setup
Unsalvageable drywall, insulation and flooring cut and bagged the same day. Commercial air movers and LGR dehumidifiers set, running 3 to 5 days with daily moisture readings.
What's included
- 24/7 live phone with shut-off guidance
- Arrival inside 90 minutes for Keene, Swanzey and Marlborough
- Truck-mounted extractors pulling 100+ GPM
- Water category call on site, written on the job sheet
- Same-day demo of saturated drywall, insulation and flooring
- Commercial air movers and LGR dehumidifiers
- Daily moisture readings for the dryout period
- Full photo log and scope for your insurance adjuster
What it costs
Most Keene basement flood cleanups run $2,500-$15,000 depending on depth, how long the water sat and water category.
| Job | Typical price | Notes |
|---|---|---|
| Emergency Response and Water Category Assessment | $300-$600 | Rolls into the job if you move forward. Higher end is overnight or during a region-wide burst-pipe or snowmelt event. |
| Small Basement Water Extraction (Clean Water, Under 2 Inches) | $800-$2,500 | Pump-out, limited demo, 3 days of drying with daily monitoring. |
| Full Basement Flood Cleanup (Multiple Inches, Clean or Cat 2) | $3,500-$10,000 | Depth, foundation type and how long water sat drive the price. Granite-rubble foundations pump slower and cost more. |
| Sewage or Contaminated Water Flood (Cat 3) | $5,000-$20,000+ | All porous materials come out. Separate from standard flood cleanup because of PPE, disposal and antimicrobial treatment requirements. |
| Crawl Space Pump-Out and Dry | $1,200-$4,500 | Older farmhouse crawl spaces with dirt floors need vapor barrier replacement on top of extraction. |
| Free Phone Quote and Arrival Window | Free | Call, describe the flood, you get a likely scope and a price band before the truck rolls. |
Ranges are typical for Flood Cleanup and Water Extraction jobs in Keene and confirmed with an exact written quote before any work starts.