The area of Crater Lakes National Park is 9,590,000.0 square meters.
The area of Crater Lake National Park is 741.485 square kilometers.
The area of Wolfe Creek Meteorite Crater National Park is 14.6 square kilometers.
The area of Coalstoun Lakes National Park is 260,000.0 square meters.
The area of Myall Lakes National Park is 448 square kilometers.
The area of Waterton Lakes National Park is 481 square kilometers.
Hells Canyon National Recreation Area is not within Crater Lake National Park. Indeed, that Canyon is not even administered by the National Parks Service; it's part of the National Forest Service. By road, the two are about 400 miles apart.
The area of Seven Lakes State Park is 5,803,192.1097216 square meters.
The area of Kettle Lakes Provincial Park is 12.61 square kilometers.
The area of Chain Lakes Provincial Park is 4,400,000.0 square meters.
The area of Cosmeston Lakes Country Park is 150,000.0 square meters.
The area of Twin Lakes State Park - Michigan - is 708,199.87392 square meters.
The area of Land Between the Lakes National Recreation Area is 687.966 square kilometers.
The area of Pocosin Lakes National Wildlife Refuge is 445.583 square kilometers.