October 2017 

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Resource details

Resource ID

514

Access

Open

Contributed by

Admin User

Volume

49

Keywords

Grand Canyon, Blue Springs

Named person(s)

Bill Loughlin

Date

16 October 17

Number

10

Abstract

For my presentation I will take you on a scenic and hydrogeologic tour of the remote and beautiful
Blue Springs of the Little Colorado Gorge near Grand Canyon, Arizona. We will begin at Grand Falls
(elevation about 4660 feet) and finish about 3,400 feet below the rim at the confluence of the Little
Colorado River and the mighty Colorado River (elevation about 2710 feet). The Little Colorado River
is only perennial for 13 miles above its confluence with the Colorado River in Grand Canyon. All of
the perennial flow in the Little Colorado River is from the Blues Springs. The total discharge of the
springs is about 210 to 220 cubic feet per second (cfs), which is about 94,000 to almost 100,000
gallons per minute (gpm). The springflow represents virtually all of the groundwater discharged from
Paleozoic rocks in the 28,000-square-mile Black Mesa hydrologic basin.

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