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Blackstone River Valley National Historical Park: fees, hours, camping and when to visit

Updated October 29, 2026. Based on National Park Service data. Published by Humblebee.

Entrance fee
None[1]
Visitor centers
1[2]

Blackstone River Valley National Historical Park is a National Park System unit in Rhode Island and Massachusetts[3]. NPS lists it as a fee-free park, so there is no entrance fee[1].

Entrance fees and passes

The National Park Service lists no entrance fee for Blackstone River Valley National Historical Park[1]. Some tours, campgrounds or permits inside a park can still have their own fees.

When to visit and hours

NPS lists the park grounds as open from sunrise to sunset[4]. The headquarters sit at Slater Mill in Pawtucket, Rhode Island, and the phone number NPS gives is (401) 725-8638[4]. NPS reports summer temperatures of 56-83F[5]. Spring and fall both run 30-70F in the NPS description[5]. Winter is listed at 20-45F[5]. NPS lists one visitor center, the Old Slater Mill Visitor Center[2]. Check the official park page for current hours before you go[4].

Pets and dogs

Under the national NPS pet rule, pets must be crated, caged or on a leash of six feet or less where they are allowed[6]. Pets are not allowed in public buildings, on public transportation or on designated swimming beaches, and service animals are excepted[6]. NPS marks pets as permitted on 15 of the 20 things to do it lists, including Winter Hikes and Ranger Walkabouts[7]. Each park can close more areas to pets, so check the official page[6].

Before you go

Questions people ask

Is there an entrance fee at Blackstone River Valley National Historical Park?
NPS lists it as a fee-free park with no entrance fee[1]. Confirm on the official park page before your trip.
What are the hours?
NPS lists the park grounds as open from sunrise to sunset[4]. The headquarters are at Slater Mill in Pawtucket, Rhode Island[4].
Are dogs allowed?
Where pets are allowed they must be on a leash of six feet or less, or crated or caged[6]. NPS marks pets as permitted on 15 of its 20 listed things to do[7].
What is the weather like?
NPS lists summer at 56-83F and winter at 20-45F[5]. Spring and fall are both listed at 30-70F[5].
What can I do there?
NPS lists activities such as biking, fishing, picnicking, paddling and birdwatching[8].

Facts and sources

  1. NPS lists Blackstone River Valley National Historical Park as a fee-free park: there is no entrance fee. National Park Service
  2. Visitor centers listed by NPS: 1 (Old Slater Mill Visitor Center). National Park Service
  3. Blackstone River Valley National Historical Park is a unit of the U.S. National Park System (designation: National Historical Park) in Rhode Island and Massachusetts. National Park Service
  4. Operating hours, Blackstone River Valley National Historical Park: The park grounds are open from Sunrise to Sunset. The headquarters are located at Slater Mill 67 Roosevelt Ave Pawtucket, RI 02860 (401) 725-8638 National Park Service
  5. NPS weather and seasons overview for Blackstone River Valley National Historical Park. National Park Service
  6. National Park Service rule 36 CFR 2.15: where pets are allowed they must be crated, caged or on a leash no longer than six feet at all times, and pets are not allowed in public buildings, on public transportation or on designated swimming beaches (service... eCFR, 36 CFR 2.15
  7. NPS lists 20 things to do at Blackstone River Valley National Historical Park: Winter Hikes, Revolutionary War Veteran's Pension Transcription Programs, Fall Programs, Ranger Walkabouts, Ranger Guided Tours - Slater Mill, Parked at Home, Take Me Fishing,... National Park Service
  8. Activities NPS lists for Blackstone River Valley National Historical Park: Biking, Fishing, Food, Dining, Picnicking, Guided Tours, Self-Guided Tours - Walking, Paddling, Canoeing, Kayaking, Junior Ranger Program, Wildlife Watching, Birdwatching. National Park Service

Fees and hours are what NPS lists in its data at the snapshot date. They change: tell readers to confirm on the official park page before a trip. Visits are NPS recreation visits (counted entries, not unique people). Use them only for this park's own months and years, never to rank parks. Campground list and site counts come from NPS and Recreation.gov records. Count fields can differ slightly between the two. The pet rule is the national baseline (36 CFR 2.15). The park may close more areas to pets. Do not claim specific trails allow dogs unless a fact says so.