0
Pull-thru
USACEKnightville Dam · Massachusetts
Indian Hollow
Overview With abundant wildlife, lush scenery and waterfront views, Indian Hollow Group Campground, located at the Knightville Dam and Reservoir, offers groups and clubs a recreational oasis.
Sites2all reservable
Elev.574ft
Comf.Apr-Oct7 months
Max rig35 ft
Electricnonesites
From Boston3h02real road time
The honest read
Synthesized from
RIDB · Open-Meteo
OSM · OSRM
Updated 2026-05-27
RIDB · Open-Meteo
OSM · OSRM
Updated 2026-05-27
At 574 ft, Indian Hollow has a 7-month comfortable window (Apr-Oct). Winter nights average around 20°F, so the shoulder seasons turn cold fast. All 2 sites are reservable in advance, so plan ahead. Popular weekends book out. Within about 4 miles: 14 peaks, lake or river access.
The campground at a glance
01 · CHARACTER
Reads strongest on shade and reservability. Softest on roomy sites.
Six axes, each scored relative to every other federal campground in the region: quiet (miles to a major road), cool (elevation), roomy (average site spacing), shade, RV-fit (longest rig), and how reservable it is. All six come from data, nothing hand-tuned.
When to go
02 · CLIMATE
avg highavg lowfrost-freedriest · May
Apr-Oct
Comfortable window: nights stay above 35°F, days below 90°F.
74%
Of summer weekend-days are dry.
Apr 21
Last spring frost; first fall frost Nov 4.
65°F
Average July low.
Getting there
03 · ACCESS
01
Boston
116 mi
3h02
By drive time
Routed road time (OSRM). Nearest major highway 6.5 mi away.
Picking your site
04 · 2 SITES
Color byShow only
2 mapped sites · dot color = seclusion · click a dot for details. Basemap © OpenStreetMap.
0
Walk-in
0
50-amp
0
Accessible
0
Prime
2
Sites
What's within four miles
05 · TRAILS · PEAKS · WATER
Trails & Peaks
Trail segments
33
Peaks
14
Viewpoints
1
Water & Access
Lake / river access
yes
To nearest major road
6.5 mi
Method
We synthesize public data layers: RIDB and Recreation.gov facility and site records, Open-Meteo climate normals, OpenStreetMap roads, trails, and water, OSRM drive times, and USGS elevation. We take no bookings, no ads, and no paid placements. Independence is the entire point.