The area of Patapsco Valley State Park is 64.924 square kilometers.
The area of Dinosaur Valley State Park is 6,170,322.924361728 square meters.
The area of Great Valley Grasslands State Park is 11.436 square kilometers.
The area of Bothe-Napa Valley State Park is 8,057,291.1369984 square meters.
The area of Bentsen-Rio Grande Valley State Park is 3,091,798.3067136 square meters.
The area of Antelope Valley Indian Museum State Historic Park is 1,606,601.9996928 square meters.
The area of Washington Valley Park is 84,983.9848704 square meters.
The area of South Valley Park is 3,678,592.4879616 square meters.
The area of Peace Valley Park is 6,070,284.6336 square meters.
The area of Hidden Valley National Park is 20.68 square kilometers.
The area of Itchen Valley Country Park is 1,780,616.8258560002 square meters.
The area of Pembina Valley Provincial Park is 1,780,616.8258560002 square meters.
The area of Berowra Valley Regional Park is 38.84 square kilometers.