Get there Lake Umbagog National Wildlife Refuge is due east of the New Hampshire town of Errol (4.5 hours north of Boston). From Errol, head south on NH 26 for .5 mile to Northern Pond Rd. and then east for 1 mile to the boat launch at the Errol Dam. Drop your vehicle here, then shuttle (see below) to the Wilson Mills put-in on the Magalloway River, 13 miles away.
Season June to September
Maps USGS quads Wilson Mills, Umbagog Lake North, and Umbagog Lake South ($8 each; store.usgs.gov)
Outfitter Northern Waters Outfitters in Errol provides canoes ($30/day; includes paddles, life jackets, maps), access to privately owned campsites (including the Diamond Peaks sites), and shuttle service (even if you have your own boat). (603) 482-3817; beoutside.com
Permits None necessary for non-motorized travel. Camping allowed only at designated sites, and must be reserved in advance (see below).
Reservations NH Parks and Recreation: bit.ly/reserveNH; Umbagog Lake State Park: 603-482-7795.
Gear up LL Cote in Errol (25 Main St.; 603-482-7777; llcote.com) has a good selection of camping and hunting supplies, but for food and lightweight equipment, stop en route in North Conway, Berlin, or Littleton (depending on your driving route).