Here the river flows through the Hells Canyon National Recreation Area and forms the boundary between Idaho and Oregon. The 652,488-acre recreation area includes the nearly 215,000-acre Wells Canyon Wilderness with the Snake River flowing through and adjacent to it.
According to Remodeling Magazine, a 200-square foot sunroom addition with footings and slabs-on-grade foundation can cost up to $70,000, while a survey conducted on HomeAdvisor.com found the average cost on sunroom additions ran around $16,315.
1 The cost of a porch could be anywhere from $5,000 for a simple structure or less to $75,000 or more for a sunroom or similar fully enclosed structure.  The cost to build a 16â x 20â covered, enclosed porch is approximately $60 to $100 per square foot, or a total of around $16,000 to $32,000. Larger porches generally cost less per square foot while smaller porches tend to cost more per square foot.