Cowanesque Lake · Pennsylvania
Overview Tompkins Campground is on the north shore of Cowanesque Lake in the northern tier of Pennsylvania, less than one mile from the New York state border. Surrounded by lush forested ridges, the lake offers recreation for the entire family, including picnicking, swimming, boating, fishing, hiking, hunting and wildlife watching. The campground is a great place for kids of any age.
Sites at Tompkins are reserved through Recreation.gov. Sites here can be reserved in advance through the official system, and they are claimed fast — cancellations then trickle back all season, unannounced, at any hour of the day or night.
| Total sites | 122 |
|---|---|
| Site types | Standard, Walk-to / hike-to |
| Hookups | Electric hookups at some sites |
| Location | Lawrenceville, PA |
| Book through | Recreation.gov |
| Official listing | Recreation.gov |
Because sites are booked months ahead, a steady share of reservations get cancelled as trips fall through. Each cancellation instantly returns that site and those nights to the official calendar — first-come, first-served, no waitlist, no announcement. Refreshing the booking page yourself, every few minutes for weeks, works in theory. In practice, the people who get these sites are the ones who hear about the opening first.
ItOpened scans the Recreation.gov calendar for Tompkins around the clock. When a site matching your dates and your vehicle opens, you get a text with a direct link to it. You book it yourself, in your own account, at the normal price. We never book, hold, or resell — your fee pays for monitoring, and openings are first-come, so speed is the whole game.
| South Shore Recreation Area | Cancellation alerts available |
|---|---|
| Lawrence Recreation Area | Cancellation alerts available |
Page data refreshed 2026-10-29. Site facts come from the official directory listing for Tompkins; cancellation statistics come from our own scanning logs.