Best Camping near Alton, NH

Whether you're a tent camper, an RVer, or just passing through, Alton, NH has a lot to offer. Discover secluded campsites where you can reconnect with nature. Or maybe you like to bring your family and friends along. Either way, there are Alton campgrounds just for you. Search nearby campsites and find top-rated spots from other campers.

Best Camping Sites Near Alton, NH (277)

    Camper-submitted photo from Pawtuckaway State Park Campground
    Camper-submitted photo from Pawtuckaway State Park Campground
    Camper-submitted photo from Pawtuckaway State Park Campground
    Camper-submitted photo from Pawtuckaway State Park Campground
    Camper-submitted photo from Pawtuckaway State Park Campground
    Camper-submitted photo from Pawtuckaway State Park Campground

    1. Pawtuckaway State Park Campground

    43 Reviews
    186 Photos
    395 Saves
    Raymond, New Hampshire

    Pawtuckaway State Park Campground lines the shore of beautiful Pawtuckaway Lake. The 192 sites are wooded and many provide views of the lake. Each campsite has an open fire ring, picnic table, flat areas for a tent, and a parking space. The bathhouses are equipped with running water, flush toilets, and 24 hour showers. There are no hook-ups at any of the campsites. The park also has a camp store where canoe and kayak rentals are available, as well as a public canoe and kayak launch. Five cabins are available; each sleeps six people, has electricity, and includes a fire ring and picnic table. Pets are not allowed in the campground or beach area of the park.

    • Pets
    • Fires
    • Electric Hookups
    • Reservable
    • ADA Access
    • RVs

    $25 - $30 / night

    Camper-submitted photo from Bear Brook State Park Campground
    Camper-submitted photo from Bear Brook State Park Campground
    Camper-submitted photo from Bear Brook State Park Campground
    Camper-submitted photo from Bear Brook State Park Campground
    Camper-submitted photo from Bear Brook State Park Campground
    Camper-submitted photo from Bear Brook State Park Campground

    2. Bear Brook State Park Campground

    27 Reviews
    161 Photos
    196 Saves
    Candia, New Hampshire
    • Pets
    • Fires
    • Phone Service
    • Reservable
    • ADA Access
    • RVs

    $25 - $40 / night

    Camper-submitted photo from Gunstock Campground
    Camper-submitted photo from Gunstock Campground
    Camper-submitted photo from Gunstock Campground
    Camper-submitted photo from Gunstock Campground
    Camper-submitted photo from Gunstock Campground
    Camper-submitted photo from Gunstock Campground

    3. Gunstock Campground

    12 Reviews
    36 Photos
    163 Saves
    Gilford, New Hampshire

    Voted Best of NH 2023 by NH Magazine, Gunstock Mountain Resort's campground puts you in the heart of New Hampshire's Lakes Region, close to the shores of Lake Winnipesaukee. Surrounded by three mountain ranges, numerous lakes, a diverse assortment of recreational opportunities and small New England villages, Gunstock offers a rustic alpine setting for your visit to New Hampshire. Backed by over 80 years of camping experience, Gunstock's tradition of catering to recreational families ensures memorable vacations. Relax at your campsite and enjoy the natural habitat around the mountain or take a pleasurable drive to one of the many local attractions.

    Has winter camping.

    • Pets
    • Fires
    • Electric Hookups
    • Phone Service
    • Reservable
    • ADA Access

    $35 - $80 / night

    Camper-submitted photo from White Lake State Park Campground
    Camper-submitted photo from White Lake State Park Campground
    Camper-submitted photo from White Lake State Park Campground
    Camper-submitted photo from White Lake State Park Campground
    Camper-submitted photo from White Lake State Park Campground
    Camper-submitted photo from White Lake State Park Campground

    4. White Lake State Park Campground

    23 Reviews
    441 Photos
    247 Saves
    West Ossipee, New Hampshire

    White Lake campground is located on a National Natural Landmark of 72 acre Pitch Pine Stand, surrounding a glacier formed lake. North Conway is 20 miles north of the campground with many tourist attractions.

    • Fires
    • Electric Hookups
    • Phone Service
    • Reservable
    • ADA Access
    • RVs

    $25 - $75 / night

    Camper-submitted photo from Granite State Campground
    Camper-submitted photo from Granite State Campground
    Camper-submitted photo from Granite State Campground
    Camper-submitted photo from Granite State Campground
    Camper-submitted photo from Granite State Campground
    Camper-submitted photo from Granite State Campground

    5. Granite State Campground

    7 Reviews
    8 Photos
    75 Saves
    Belmont, New Hampshire

    We are a small campground with beautiful new bathhouses and hookups for RV's. All tent sites have water and electric. Each site has a picnic table and fire ring. All the sites are a short walk to the bath houses and laundry. We have rebuilt the campground over the last few years and everything is new. We don't have Mickey Mouse or singalong's but if you are looking to have some fun give us a try.

    • Pets
    • Fires
    • Electric Hookups
    • Phone Service
    • Reservable
    • RVs
    Camper-submitted photo from Danforth Bay Camping & RV Resort
    Camper-submitted photo from Danforth Bay Camping & RV Resort
    Camper-submitted photo from Danforth Bay Camping & RV Resort
    Camper-submitted photo from Danforth Bay Camping & RV Resort
    Camper-submitted photo from Danforth Bay Camping & RV Resort
    Camper-submitted photo from Danforth Bay Camping & RV Resort

    6. Danforth Bay Camping & RV Resort

    14 Reviews
    44 Photos
    77 Saves
    West Ossipee, New Hampshire

    More that 100 sites that can accommodate RVs and tents.

    There are 24 pull-through sites with easy-in, easy-out convenience and the new deluxe camping sites with patio furniture and a concrete slab to park your rig on.

    In addition to the large sites, Danforth Bay also has smaller, more intimate sites situated along a winding brook-- perfect for tents and pop-ups.

    Many campsites are along the half-mile shoreline, or atop hills overlooking the lake. In addition to having great views of the lake, campers at these sites get treated to fantastic Danforth Bay sunsets.

    Cabins also available.

    • Pets
    • Fires
    • Electric Hookups
    • Phone Service
    • Reservable
    • ADA Access

    $40 - $85 / night

    Camper-submitted photo from Epsom Valley Campground
    Camper-submitted photo from Epsom Valley Campground
    Camper-submitted photo from Epsom Valley Campground
    Camper-submitted photo from Epsom Valley Campground
    Camper-submitted photo from Epsom Valley Campground
    Camper-submitted photo from Epsom Valley Campground

    7. Epsom Valley Campground

    7 Reviews
    18 Photos
    51 Saves
    Epsom, New Hampshire
    • Pets
    • Fires
    • Electric Hookups
    • Phone Service
    • Reservable
    • ADA Access

    $27 - $40 / night

    Camper-submitted photo from Salmon Falls / Lebanon KOA
    Camper-submitted photo from Salmon Falls / Lebanon KOA
    Camper-submitted photo from Salmon Falls / Lebanon KOA

    8. Salmon Falls / Lebanon KOA

    7 Reviews
    3 Photos
    17 Saves
    Rochester, New Hampshire
    • Pets
    • Fires
    • Electric Hookups
    • Phone Service
    • Reservable
    • ADA Access
    Camper-submitted photo from Meredith Woods Four Season Camping
    Camper-submitted photo from Meredith Woods Four Season Camping
    Camper-submitted photo from Meredith Woods Four Season Camping
    Camper-submitted photo from Meredith Woods Four Season Camping
    Camper-submitted photo from Meredith Woods Four Season Camping
    Camper-submitted photo from Meredith Woods Four Season Camping

    9. Meredith Woods Four Season Camping

    8 Reviews
    10 Photos
    27 Saves
    New Hampton, New Hampshire

    Meredith Woods Four Season Camping Area is your year-round destination for family fun, relaxation and enjoyment. Conveniently located in the heart of the Lakes Region just 3 miles east of exit 23 of I-93 we are easy to get to, but hard to leave.

    While most campers have always put their RV up in the fall, many are now finding that camping year-round can be a lot of fun. Whether taking an occasional weekend trip or setting the RV on a site for the winter season, it makes sense to get more out of the investment you've made in your RV.

    Meredith Woods has been operating year-round since opening in 1991. Its location just 3 miles off exit 23 of I-93 in Meredith, NH is not only easy to get to, but also puts you in the heart of the Lakes Region and just south of the White Mountains .

    Whether you're just looking for a relaxing weekend sitting around the pool or looking for a base from which to enjoy winter sports, if you've got the RV, you're already halfway there. Now start planning your winter fun!

    • Pets
    • Fires
    • Electric Hookups
    • Phone Service
    • Reservable
    • ADA Access

    $44 - $135 / night

    Camper-submitted photo from Yogi Bear's Jellystone Park™ Camp Resort, Lakes Region
    Camper-submitted photo from Yogi Bear's Jellystone Park™ Camp Resort, Lakes Region
    Camper-submitted photo from Yogi Bear's Jellystone Park™ Camp Resort, Lakes Region
    Camper-submitted photo from Yogi Bear's Jellystone Park™ Camp Resort, Lakes Region
    Camper-submitted photo from Yogi Bear's Jellystone Park™ Camp Resort, Lakes Region
    Camper-submitted photo from Yogi Bear's Jellystone Park™ Camp Resort, Lakes Region

    10. Yogi Bear's Jellystone Park™ Camp Resort, Lakes Region

    6 Reviews
    25 Photos
    41 Saves
    Milton, New Hampshire

    Every once in a while, campers discover a truly extraordinary campground, where all of the “essentials” just seem to fall into place. Jellystone Park™ Lakes Region is one of those places. Set in a beautiful location, with a ton of fun amenities, and home to a tight-knit camping community, this is the ideal getaway in New Hampshire. Jellystone Park™ attracts the type of friendly people that you would like to have living down the road from your home. In addition to short-term and seasonal campsites, we also offer cabin rentals for those who are new to camping or who want to experience the camping lifestyle without an RV. With all that we offer, it’s time to stop searching and to start camping!

    • Pets
    • Fires
    • Electric Hookups
    • Phone Service
    • Reservable
    • ADA Access

    $64 / night

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Showing results 1-10 of 277 campgrounds

Pet-friendly camping near Alton

Recent Reviews in Alton

1273 Reviews of 277 Alton Campgrounds


  • Chris R.
    Camper-submitted photo from Pemi Cabins NH LLC
    Nov. 25, 2024

    Pemi Cabins NH LLC

    Cozy cabins in front of the river and near all key attractions

    I have been there earlier this month during a week day for a last minute break from work. Experience was great. Not only the ambiance (one of the rare locations to be just in front of this beautiful river) but also the location that is near all key hiking trails and attractions (ski resorts, breweries and restaurants).

  • aThe Dyrt PRO User
    Camper-submitted photo from Meredith Woods Four Season Camping
    Oct. 30, 2024

    Meredith Woods Four Season Camping

    Quiet campground

    We stay here a couple of times a year. It is our first stay of the season and our last. Very quiet, sites are large and staff is friendly. I am disappointed that the new owners have changed the campground to seasonal instead year round. My children are grown but would think not much for them to do there. For children I would think Clearwater campground across the street would be better. (Same owners)

  • Kt The Dyrt PRO User
    Camper-submitted photo from Town Hall Road Dispersed
    Oct. 28, 2024

    Town Hall Road Dispersed

    Great spot. Watch put for officer rowe!!!

    Great spot w an exception of local officer Rowe. Comes to site unannounced or invited then fabricates the visit.

    Other than that it's wonderful. Some really amazing river sites. Moose pond at top left fork has reception as well as lower gate.

  • Kt The Dyrt PRO User
    Camper-submitted photo from Toad Hill
    Oct. 28, 2024

    Toad Hill

    Stayed in cabin june 2024

    Slice of heaven! One of the most unique and ruggedly wonderful stays I've had. Be sure to visit the emerald pool just across the Hiking trail bridge..

  • Meghan B.The Dyrt PRO User
    Camper-submitted photo from Blackberry Crossing
    Oct. 11, 2024

    Blackberry Crossing

    Blackberry Crossing Campground

    Your typical first-come first-served National Forest campground with vault toilets and handpump water. The Albany Covered Bridge is a short walk away.

  • Judy W.
    Camper-submitted photo from Bear Brook State Park Campground
    Oct. 4, 2024

    Bear Brook State Park Campground

    Bearbrook Pros and Cons

    Con: Signage is awful! Hard to find park, office and cabins! Once there, Looong drive to both campground and Cabins.

    Pro: cabins are on a remote lake. Perfect for star gazing! Rustic but comfy (beds) cabins. Bring all your own stuff. No electricity, so no lights. Our cabin had a steep path. Others did not.

  • DThe Dyrt PRO User
    Camper-submitted photo from Campton Campground
    Sep. 22, 2024

    Campton Campground

    Awesome Campground

    I found this place on The Dyrt app, so I came to check it out, I made a reservation online just to make sure I guaranteed my spot when I arrived, which I didn’t had to worry about either way because there was lots of empty spaces, but you never know, even though I made my reservation my spot didn’t have my name on it or any information about when I was suppose to arrive and leave, there was nobody there, but made me wonder if there was someone already there, besides that, it’s a great place to camping, clean, quite, bathroom was close by, shower and everything, besides all that I was able to use my phone with no problems, I have AT&T btw, there is a Dunkin, General store and a gas station like 3 minutes driving, which is great in case you forgot to buy something or are too lazy to make coffee and breakfast, I stayed for 2 night, can’t complain, and will come back for sure, I highly recommend this place, although I recommend to get the side from 33 to 57 it’s on the other side and not too close from the highway.

  • Jeffrey S.The Dyrt PRO User
    Camper-submitted photo from Lost River Valley Campground
    Sep. 17, 2024

    Lost River Valley Campground

    Two stays up on Harley road sites

    August stay very nice site 210 facing east with views of loon mountain area. These sites are w/E/S. Second stay mid September site 225 good easterly view. Quiet and peaceful. Lower sites by river with wooded sites of all categories. Tenting to small RV’s.

  • Jeffrey S.The Dyrt PRO User
    Camper-submitted photo from Lost River Valley Campground
    Sep. 13, 2024

    Lost River Valley Campground

    Really rustic feel with modern convenience

    Stayed here in August for a few nights now booking in September for three nights. Like sites on Harley road, with views of loon mountain and surrounding vistas. Very nice campground with lots of wooded sites some with river frontage. Very well appointed store. Lots of sites have electric and water. No RV over 32’ in lower sites over lost river bridge. Also cabins available throughout the grounds for those without RV/Tent. Close to town with stores , restaurants, gas stations

  • Kevin C.The Dyrt PRO User
    Camper-submitted photo from Sebago Lake Family Campground
    Sep. 13, 2024

    Sebago Lake Family Campground

    Beautiful Park Like Setting

    We came into the park on a Wednesday in mid September and found that over half the spaces were open. We grabbed a spot about 60 feet from the lake.

    The camping sites are large enough for a tent and a couple of vehicles. There are a few larger sites here and there. Sites are very close to neighboring camp sites so Privacy is poor

    There are very nice bathroom facilities with hot showers, dish rinsing sinks and hot showers.

    The view from the lake is amazing. We walked to the beach every morning with our chairs for coffee. VERY RELAXING!

    There is a building near the entrance of the state park that says its a store but it looks pretty old and closed.

    The young lady who delivered our park permit was exceptionally friendly and helpful. However, the people that clean the restrooms are about as polite as construction workers in Queens. They do have a garbage dumpster but it is located about a mile from the campground. Not very convenient for tent or van camping.

    Overall the price charged for the sites seems higher than the value received.

  • Eric H.The Dyrt PRO User
    Camper-submitted photo from Moose Hillock Camping Resort
    Sep. 13, 2024

    Moose Hillock Camping Resort

    Mixed Feelings

    My family and friends were drawn to this campground for its exciting pool and convenient location, and those aspects definitely lived up to expectations. However, our campsite was not level, and the sites were very close together with little privacy. We were tent camping but the area we were in, while a tent site, is best for RVs.

    The bathroom facilities could also use some attention– a loose toilet and a broken hand dryer weren't ideal. Overall, we enjoyed our stay, but these conditions kept it from being great.

  • Kevin C.The Dyrt PRO User
    Camper-submitted photo from Elbow Pond Road Dispersed Site
    Sep. 12, 2024

    Elbow Pond Road Dispersed Site

    Small campsites/No amenities

    Drove in on a Wednesday afternoon and drove past 4 or 5 sites, which were all occupied.

    Then saw a car ahead that was backing up. Long story short, they were afraid to drive across a dry wash in their new Jeep. No place to get by. Had to back my trailer about a quarter mile, so they could get out.

    Camped in a very small spot, just barely enough room for our SUV and small teardrop to get off the road.

    There was only a 20 foot by 12 foot space to camp jn with no water, no dumpster, no toilet, no view of anything and lots of other campers that appear to be long term residents.

    OK for an overnight stay but not a desirable camping location overall.

  • C
    Camper-submitted photo from Sea Coast Camping and RV Resort
    Sep. 12, 2024

    Sea Coast Camping and RV Resort

    Small, clean, quiet campground close to NH beaches and Portsmouth NH

    Friendly staff, hard gravel access roads, level gravel sites. No issues with electric, sewer or water hookups. Some of the best clear, clean, drinking water at high pressure we have come across. Great access to beaches, numerous eateries and shopping minutes away. This is our second time we have been here and here for the month of September.

    I would reccomend Seacoast RV Park to other campers.

  • L
    Camper-submitted photo from Great Escapes RV Resort Bryan/ College Station
    Sep. 10, 2024

    Great Escapes RV Resort Bryan/ College Station

    A True RV Resort with Fun at every turn! and full hookups!

    2 pools, golf carts for rent, nice new sites. Not much shade where we were so bring umbrellas/shades. The store is well stocked, the employees are all super nice, fun activities for the kids like the wibit lake jumping obstacle course, 2 swimming pools, canoeing, and TONS of add-on activities like tie-dying, hay rides etc and you can have their mascot deliver donuts to your campsite on certain days. Very nice clubhouses. Full hookups. The list goes on and on!

     We will be back, it was a big hit!!

  • JThe Dyrt PRO User
    Camper-submitted photo from Riverside Park Campground
    Aug. 31, 2024

    Riverside Park Campground

    What you get in southern Me

    A friendly place but very crowed campground and tight getting a 21’ trailer in. About 1/2 of the sites are seasonal. Lots of beach traffic in the area and while we are glad we stoped by we wouldn’t go back

  • Ronald C.The Dyrt PRO User
    Camper-submitted photo from Sun Outdoors Wells Beach
    Aug. 19, 2024

    Sun Outdoors Wells Beach

    Huge campground

    I only stayed one night because I couldn’t find a spot anywhere close to 95 . The campground is huge and the spaces are very tight ,not to mention $148 for a full hook up pull thru site that my 42 ft 5w barley fit. I would not go back .

  • Kaileigh K.
    Camper-submitted photo from White Lake State Park Campground
    Aug. 19, 2024

    White Lake State Park Campground

    Great Lake with nice campground amenities and feel

    We had a great stay at white lake state park. I was surprised that there was only a large log separating our site from the next one but luckily it was just my brothers family so it wasn’t awkward. Our sites (2-11 and 2-11a) survived a 2 hour monsoon with some water running through but other sites had some major flooding so just something to be cognizant of.

  • L
    Camper-submitted photo from Winding River Campground
    Aug. 18, 2024

    Winding River Campground

    Great time with kids

    We had a great time here camping with our kids and grandkids. River is not much to look at but the pool was great and there were great events like foam parties, DJ at the pool, pancake breakfast and live music to name a few. Staff were friendly and helpful.

  • Julie R.
    Camper-submitted photo from Northstar Campground
    Aug. 18, 2024

    Northstar Campground

    Just okay

    The owners are very nice but the sites are super close together. We had neighbors that had a large party 4 ft from our camper for two days. The showers cost .50 and are luke warm, definitely not hot. Only 4 shower stalls (2 men 2 female) for the whole campground. The bathrooms weren't cleaned during the 2 days we were there. The country side is beautiful and Newport is a cute little town. We won't stay at the campground again.

  • Jonathan J.
    Camper-submitted photo from Old Orchard Beach Campground
    Aug. 17, 2024

    Old Orchard Beach Campground

    Great Community Park

    This is a great campsite. So many amenities that work. Great sense of community. Overly friendly people at the front desk that are accommodating. The spaces are very close to each other. The Wi-Fi does not work very well (WFH employees trying to see the world). Other than the Wi-Fi, everything exceeded our expectations.

  • JThe Dyrt PRO User
    Camper-submitted photo from Beaver Dam Campground
    Aug. 17, 2024

    Beaver Dam Campground

    Excellent campground

    Beautiful and very well maintained. The staff is awesome. There are SO many amazing activities for the whole family. Would absolutely recommend!

  • BThe Dyrt PRO User
    Camper-submitted photo from Town Hall Road Dispersed
    Aug. 16, 2024

    Town Hall Road Dispersed

    Good dispersed camping

    The road was not as bad as I anticipated. There was room for my Jeep Grand Cherokee towing a squaredrop camper to pass the very few oncoming vehicles we encountered. There is a good mix of tent and small/medium camper sites. Many of the sites are right on the side of the road. 

    We went to the end of Town Hall Road and camped at the last site before you leave the WMNF. It was a very spacious site, set back from the road, a little bumpy getting into it.


Drive Time


Guide to Alton

Camping near Alton, New Hampshire, offers a mix of beautiful landscapes and fun activities for everyone. Whether you're looking for a peaceful retreat or an adventure-filled getaway, there are plenty of campgrounds to choose from.

What to do:

  • Hiking: Explore the trails around Pawtuckaway State Park Campground. One camper mentioned, "So many lovely waterfront sites, clean facilities, camp store and beach are great."
  • Water Activities: Enjoy kayaking or canoeing at Dry River — Crawford Notch State Park. A visitor said, "Cool location right on the edge of the Dry River Wilderness. Great Basecamp for lots of hikes in the area."
  • Wildlife Watching: Visit Bear Brook State Park Campground for a chance to see local wildlife. One reviewer noted, "Set back deep in the woods, I’d call the sites semi-private."

What campers like:

  • Scenic Views: Campers love the beautiful surroundings at Franconia Notch State Park. A happy camper shared, "Lafayette Place is a beautiful campground. Restrooms are clean and the camp store is well stocked."
  • Clean Facilities: Many appreciate the cleanliness of the campgrounds. A visitor at Lorraine Park Campground said, "The sanitary building is clean with good showers."
  • Family-Friendly Atmosphere: Families enjoy the activities available at Lost River Valley Campground. One reviewer mentioned, "They also had a tinker bell walk and other activities."

What you should know:

  • Site Proximity: Some campgrounds have sites that are close together. A camper at Crawford Notch Campground remarked, "The sites are all nice, but the noise from cars and trucks zipping by on route 302 is loud."
  • Limited Amenities: Not all campgrounds have extensive amenities. A visitor at White Lake State Park Campground noted, "The water from the spigot is absolutely HORRID tasting."
  • Reservation System: Some campers have found the reservation system frustrating. A reviewer at Dry River — Crawford Notch State Park said, "The nicest sites were reserved the entire time we were there and they were total no-shows."

Tips for camping with families:

  • Choose the Right Campground: Look for family-friendly options like Bear Brook State Park Campground. A parent shared, "Brought our dog and she absolutely loved it."
  • Plan Activities: Make sure to have a list of activities. One camper at Pawtuckaway State Park Campground mentioned, "Can't beat it for only an hour from Boston."
  • Pack for Bugs: Be prepared for mosquitoes, especially near water. A visitor at Lorraine Park Campground advised, "The water in the pond is not streaming so be prepared for mosquitoes when camping close to the water."

Tips from RVers:

  • Check Site Size: Make sure your RV fits the site. A reviewer at Lost River Valley Campground said, "The ground was level and the hookups look new."
  • Look for Amenities: Choose campgrounds with the amenities you need. A visitor at Dry River — Crawford Notch State Park mentioned, "This campground has a lot of amenities like showers and washer/dryers."
  • Be Mindful of Noise: Some campgrounds can be noisy. A camper at Crawford Notch Campground noted, "There is literally no one in charge on site at any time and there is no maintenance."

Camping near Alton, New Hampshire, has something for everyone, from families to solo adventurers. Just be sure to plan ahead and choose the right spot for your needs!

Frequently Asked Questions

  • What camping is available near Alton, NH?

    According to TheDyrt.com, Alton, NH offers a wide range of camping options, with 277 campgrounds and RV parks near Alton, NH and 3 free dispersed camping spots.

  • Which is the most popular campground near Alton, NH?

    According to TheDyrt.com, the most popular campground near Alton, NH is Pawtuckaway State Park Campground with a 4.2-star rating from 43 reviews.

  • Where can I find free dispersed camping near Alton, NH?

    According to TheDyrt.com, there are 3 free dispersed camping spots near Alton, NH.

  • What parks are near Alton, NH?

    According to TheDyrt.com, there are 12 parks near Alton, NH that allow camping, notably Hopkinton-Everett Lake and Edward MacDowell Lake.