** Arrival dates earlier than the online-reservation-window may also be available at the campground.
*** Some sites may be available only from the campground on a first-come-first-served basis.
Nature Exploration, History and Recreation Galore! Enjoy the woods and water along the Patapsco for varied recreation including camping, hiking, fishing, canoeing, horseback trails and mountain bike trails, as well as picnicking for individuals or large groups in the park's many pavilions available for rental. It features a view of the historic Thomas Viaduct, the world's longest multiple-arched stone railroad bridge, located in the park's Avalon Area. You also can walk across the 300-foot suspension swinging bridge in the Orange Grove Area.
Reservations must be made 1 Day(s) ahead of arrival and can be made up to 365 Day(s) in advance.
Reservations must be made 1 Day(s) ahead of arrival and can be made up to 365 Day(s) in advance.
Reservations must be made 1 Day(s) ahead of arrival and can be made up to 365 Day(s) in advance.
Reservations can be made for today and can be made up to 365 Day(s) in advance.
Note: There are 16 site(s) in this category with different booking windows. Please check site details for more information (Loop, Site)Reservations must be made 1 Day(s) ahead of arrival and can be made up to 365 Day(s) in advance.
2026 Reservable Dates
2027 Reservable Dates
- Biking Trails
- Dump Station
- Electric Hookups
- Equestrian Trails
- Fishing
- Hiking / Walking Trails
- Historic Site / Museum
- Hunting
- Interpretive Center
- Mini Cabins
- Mountain Biking Trails
- Pet-Friendly Swimming
- Picnic Shelters
- Picnic Tables
- RV Sites
- Restrooms
- Showers
- Swimming
- Wheelchair Accessible
- Youth Group Camping
Cancel/Change Policies for all Resource Types
Facility Rates*
Mar 27 2026 -
Nov 01 2026
Mar 26 2027 -
Oct 31 2027
*Displayed rates are base rates and do not reflect discounts, surcharges (holiday/weekend/residency) or incremental charges, such as pet fees.
Prices are subject to change without notice, and all transaction fees, penalties, and donations are non-refundable.







