Which rivers matter in this part of the county?
The Millers River is the main one. It drains northern Worcester County and runs through the centres of Winchendon, Athol and Orange, with a documented flood history at Athol. The Otter River, about ten miles long, flows through Templeton and is a major tributary of the Millers.
The Otter River once powered a woolen mill, a paper mill and a brickyard in Otter River village, which is why there are buildings close to the water in the first place; a mill needed the drop, so the village was built where the river was. Its own flood history has not been documented in anything we can cite, so we do not make claims about it.
The flood-control works came after the big floods, not before them. The Birch Hill and Tully Lake dams were built following the 1927, 1936 and 1938 events for flood control, which is the single most important thing to know about the basin: the river that flooded Athol's Main Street is a managed river now.
How does an ice jam flood a house with no rain?
Moving ice grounds on a shallow, a bend or a bridge pier and piles into a plug across the channel. The river backs up behind it and spreads over ground that is not usually wet, sometimes within an hour and on a day with no precipitation at all. When the plug lets go the water drops just as fast.
Two things make the winter version harder. The flooding happens where the ice stopped rather than where the river normally rises, so local experience is a poor guide, and everything is freezing, which means a wet cellar is also a freezing cellar once the power or heat is affected.
The response is the same as any outside-water event, with an added worry about the heating plant. If the furnace, boiler or water heater went under, it is left alone for a technician. Power outage and ice storm water damage covers a house that is wet and cold at the same time.
Is river flood water treated as contaminated?
Yes. Water that has crossed roads, yards and ground before entering the building is handled as grossly contaminated regardless of how clear it looks, because it carries silt, sewage from any source it passed, fuel and whatever was stored where it ran. That decides what is removed rather than cleaned.
In practice that means porous materials come out: carpet and pad, soft insulation, cardboard, particleboard, upholstery, paper and wet drywall above the line the water reached. Hard, non-porous surfaces are washed, cleaned with an antimicrobial product and dried in place, which is most of an old cellar.
Food, medicines and anything stored on the floor that touched the water are discarded, not rinsed. Sewer and septic backup cleanup describes the same category of water arriving from the other direction, and uses the same removal rules.
Will homeowner insurance pay for river flooding?
Generally not. Massachusetts homeowner policies typically exclude flood, meaning the rise of surface water, and cover it only where separate flood coverage has been bought; sewer backup and sump-pump failure also usually need their own endorsement. The policy and the insurer decide, and the crew cannot.
That is a conversation to have with an agent long before a high-water season, because flood coverage cannot be added once the river is up and the distinction between a flood and a covered sudden event comes down to the wording in your own policy.
If a claim is denied and you think it was mishandled, the Massachusetts Division of Insurance Consumer Service Unit takes complaints, though it cannot decide the cause of a loss; readers in the New Hampshire towns we serve go to the New Hampshire Insurance Department. The claims guide explains what to keep.
What can be saved after a cellar takes river water?
Hard materials and solid wood, usually. Stone, brick, block and concrete clean up and dry, as do solid-wood framing, posts and stair stringers. What is normally lost is everything porous the water sat in, plus any appliance, furnace or pump that went under and has to be assessed by its own trade.
The decisions get easier if the high-water line is recorded before anything is moved, because removal above that line is a judgement and below it generally is not. Keep an inventory and photographs of what is discarded as you go, since that list is the part of a claim people regret not making.
Mechanical equipment is nobody's guess. A submerged burner, a well pump or a pressure tank is checked by the trade that owns it, and flooded well and private system cleanup covers water supply that has been under flood water.