About Beaver Lake
Beaver Lake is a public lake in Derry, once called Beaver Pond. Scottish Presbyterian families settled the area in the early 1700s, and later pavilions, steamboats and public beaches made the lake a place for leisure. The town describes Derry as sitting beside it.
Streets along the water include Beaver Lake Avenue, Beaver Lake Road and North Shore Road, according to property listing sites. We use them as anchor streets and do not claim exact neighborhood limits.
Lake facts from the state
These figures come from the New Hampshire Department of Environmental Services 2019 data summary for Beaver Lake.
These are figures for the lake and its watershed, not for any house.
Plumbing problem at a Beaver Lake house?
Call and say whether the house is year-round or seasonal.
Shoreland rules that can touch plumbing
New Hampshire's Shoreland Water Quality Protection Act covers lakes and ponds larger than 10 acres, so it applies to Beaver Lake. The protected shoreland is the land within 250 feet of the lake's reference line.
For new septic systems, the state sets minimum distances from the lake to the leaching area. They are 125 feet for very porous sand and gravel soils, 100 feet where restrictive layers sit within 18 inches of the surface, and 75 feet for other soils.
A shoreland impact permit is needed for a new system on an undeveloped lot or a replacement that adds sewage loading. Replacing a failed system in kind without added load does not need one. Many towns add stricter rules, so check with Derry as well. Septic design and approval go through the state and town, not through a plumbing call.
Beaver Lake on the map
Sewer or septic: we could not confirm
We could not find a source that says which Beaver Lake streets use town sewer and which use septic tanks. Do not assume either one. Look for a tank lid in the yard, check your property records or ask the town. The answer changes who you call for a slow drain and whether a sewer line repair involves a town connection.
If the house is on septic, a camera on the line between the house and the tank is still useful. The sewer inspection page explains what a camera shows.
Lake-area plumbing questions
These are general checks that fit lakeside houses. We have no data on how often each problem occurs at Beaver Lake.
| Situation | What to check first | Page |
|---|---|---|
| Water in the cellar after rain or thaw | Sump pump, discharge line and power | Sump pumps |
| Slow drains in a house on septic | The tank and the line to it | Drain cleaning |
| A seasonal house with frozen pipes | Shutoff, exposed pipes and split sections | Burst pipe repair |
| Water use suddenly jumped | Running toilet or a hidden leak | Leak detection |
Closing a lake house for the winter
A house that sits empty in winter is at risk if a pipe freezes. We do not know how many Beaver Lake homes are seasonal, so use this list only if yours is. It is general New England practice.
- Close the main shutoff and drain the lines if the house will be empty.
- Open the faucets so trapped water can drain.
- Ask a plumber how to handle the water heater and the traps.
- Know where the shutoff is before you leave.
A frozen or split pipe is an emergency. Close the main valve and call.
What we could not confirm about Beaver Lake
We could not confirm which streets use town sewer or septic, how many homes are year-round or seasonal, the age of the housing, or whether a lake association exists. We have no search volume data for this area.
Property listing sites were used only to find street names, because they show addresses and not neighborhood identity. Plumbing conditions at Beaver Lake are not stated because no source supports them.
Sources: NH Department of Environmental Services, 2019 Beaver Lake data summary (area, depth, watershed). NHDES Protected Shoreland FAQ (250 feet, septic setbacks, permit rules). Town of Derry, Discover Derry. All Things Derry, Beaver Lake history. property listing sites for street names.
Beaver Lake plumbing questions
State data lists 134 acres, a maximum depth of 14 meters and a watershed of 5,760 acres.
They can. The rules mostly affect septic systems, new construction and work within 250 feet of the lake. Replacing a failed system in kind without added load does not need a shoreland impact permit, but check with the town and state first.
Homes near any water body can see higher groundwater, and a spring thaw can raise it. We have no measurements for specific Beaver Lake streets. A working sump pump and a clear discharge line are the usual first checks.
Yes for the plumbing inside the house and up to the tank. Pumping and design are separate work, and the plumber will say if the job belongs to one of those trades.
Talk to a plumber about your Beaver Lake home
Call any hour. A clear price comes before work starts.