The oldest exposed rock forms in the general area are Runite granite, which dates to 1400 million years before present.^[1] The watershed holds a diverse flora and fauna. Within this part of the Sierra Ancha Range there are notable disjunctive populations of Coastal woodfern, Dryopteris arguta; this fern is otherwise common in areas nearer the Pacific coast.^[2]

• Salome Creek

• Ivo Lucchitta. 2001. Hiking Arizona's Geology, Published by The Mountaineers Books, ISBN 978-0-89886-730-5, 269 pages
• Tom Dollar and Jerry Sieve. 1999. Guide to Arizona's Wilderness Areas, Big Earth Publishing, ISBN 1-56579-280-7, 304 pages
• C. Michael Hogan. 2008. Coastal Woodfern (Dryopteris arguta), GlobalTwitcher, ed. N. Stromberg

33°31′26″N 111°01′20″W / 33.5238°N 111.0221°W / 33.5238; -111.0221