Rio de Flag

Rio de Flag
Physical characteristics
SourceLeroux Springs
  locationSan Francisco Peaks, Arizona
  coordinates35°17′36″N 111°43′30″W / 35.29333°N 111.72500°W / 35.29333; -111.72500
  elevation8,000 feet (2,400 m)
MouthSan Francisco Wash
  location
Walnut Creek, Arizona
  coordinates
35°14′12″N 111°10′43″W / 35.23667°N 111.17861°W / 35.23667; -111.17861
  elevation
7,000 feet (2,100 m)
Length33 mi (53 km)
Basin features
Tributaries 
  leftSchultz Creek
  rightSinclair Wash
WaterbodiesFrances Short Pond, Logan's Crossing
WaterfallsPicture Canyon

The Rio de Flag, which has historically been known as the River de Flag and San Francisco River, is a river in Arizona that runs through Flagstaff, originating from the San Francisco Peaks before draining into the Little Colorado River. The river's age is unknown, though its first channels were around over one million years ago.