Water is the carver of the Grand Canyon and the lifeblood of its many biotic communities. Of the numerous cascades, trickles and torrents within the canyon, much is known about the storied Colorado River and its critical role in canyon country. Relatively little is known about the more sublime water sources that emerge from the canyon’s ancient rock strata. Though the Colorado River steals most of the headlines, it is the more humble water sources that sustain most of the living organisms in Grand Canyon. Spring-fed streams in particular play a vital role in a region where rainfall is scarce.

This “hands-on” class will study and inventory a number of these oases, and assist in the gathering of data to further the park’s understanding of these vital resources. Destinations will include Big Jim Spring, Santa Maria Spring, as well as Hermit, Monument, Salt, Horn, and Garden creeks. After a thorough orientation on the South Rim, the class will embark on this 25-mile backpack down the breathtaking Hermit Trail to a campground beside tranquil Hermit Creek. Subsequent nights will be spent at Monument Creek and Indian Garden campgrounds, preceding a final 4.5-mile ascent of the Bright Angel Trail back to the South Rim. Note: no previous surveying experience is required.