|
|
|||||||||||||||||||||||||||||||||||||||||||
|
|
|||||||||||||||||||||||||||||||||||||||||||
 The
City of Flagstaff is located in southern Coconino County approximately 150
miles north of Phoenix. Flagstaff is surrounded by the Coconino National
Forest, an area that contains a large number of natural, scenic, and
recreation attractions. Due to its 7,000-foot elevation, Flagstaff
experiences heavy snowfall during the winter and mild temperatures during
the summer. The Rio de Flag is a tributary of the San Francisco Wash, which feeds into the Little Colorado River. Originating on the southwestern slopes of the San Francisco Mountains north of Flagstaff, the Rio de Flag flows over various types of terrain: the wide, flat valleys of the Fort Valley region; the steep, narrow canyons north of Flagstaff, and the wide, flat-bottomed canyons southeast of Flagstaff. The total drainage area of the Rio de Flag watershed is approximately 116 square miles. The total drainage area above the Flagstaff city limits is roughly 50 square miles. The elevation of the drainage area as a whole ranges from approximately 12,356 feet to 6,800 feet. Sinclair Wash and Clay Avenue Wash originate southwest of Flagstaff on the slopes of Woody Mountain. Sinclair Wash flows northeast to its confluence with Rio de Flag just south of the O'Leary Road/Lone Tree Road intersection. Clay Avenue Wash flows west from Observatory Mesa, joining the Rio de Flag (via an underground culvert) near the intersection of Butler and San Francisco Streets. Other smaller tributaries to Rio de Flag within the city limits are Penstock Avenue Wash, Peaceful Valley Wash, Country Club Wash, Fanning Drive Wash, Switzer Canyon Wash, Spruce Avenue Wash, West Street Wash, Bow and Arrow Wash, and Peak View Wash.
--- from U.S. Army Corps of Engineers Draft
Feasibility Report |
|||||||||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||||||
|
|
|||||||||||||||||||||||||||||||||||||||||||
