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The Colorado Plateau

The Vast and the Intimate
Suspended in Time
A Textbook of Geomorphology

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PlacesLees Ferry (page 5 of 5)

Lees Ferry Today

Marble Canyon

A river trip  through the Grand Canyon beginning at Lees Ferry first takes boaters through majestic Marble Canyon. Photo NAU.PH.96.4.91.64 by Bill Belknap courtesy of Cline Library Special Collections, Northern Arizona University.

During the first five decades of the twentieth century, only thirteen Grand Canyon river trips launced at Lees Ferry. In fact, through the 1940s and 1950s until construction began on Glen Canyon Dam, trips through Glen Canyon were far more common than those through Grand Canyon. Thousands of people boated the calm waters from Hite, Utah down to Lees Ferry, making visitation at Lees Ferry higher than at any other previous time. After completion of the dam, boating in the Grand Canyon increased tremendously, rising from 280 boaters in 1962 to 16,000 in 1973. Today, the number of boaters is controlled by NPS and maintained at about 20,000 per year.

The creation of Glen Canyon Dam has had dramatic effects on the ecology and stream dynamics of the Colorado River within the canyon downstream of the dam. Before the river was impounded by the dam, it carried a tremendous amount of sand and silt, especially during spring floods, scouring the canyon bottom and eroding and depositing material on the river shores. Now, water discharge by the dam is controlled, virtually sediment-free and of a much colder temperature, leading to many changes in the river ecosystem. Beaches are eroded, but cannot be resupplied with sand; native plants and fish have been displaced by exotics; some wildlife has disappeared, while other species, such as waterfowl and Peregrine falcons, have increased. In 1994, an attempt was made to simulate flood conditions with a large release of water from the base of the dam. Results from the experiment were mixed, and management of river flows remains a controversial issue.

Another effect of the dam has been the establishment of and/or encouragement of exotic and invasive species throughout the river corridor, including tamarisk, Russian olive, and several fish species, all of which may compete with and displace native species, changing the composition and functioning of the river ecosystem. Restoration programs are underway to eradicate some of these exotic species, restore habitats, and allow native species to recover.

The clear, cold waters released from Glen Canyon Dam, flowing past Lees Ferry, at a consistent temperature of 46-48 degrees F, support one of the country's premier "tailwater" trout fisheries. Trophy rainbow trout feed in great numbers in the first 20 miles downstream from the dam, drawing anglers from around the world. While many people enjoy the fishing here, and the attraction is a significant boost to the local economy, the trout are not native to this section of the Colorado, and the conditions allowing them to thrive are driving the remaining native fish ever closer to extinction. This odd transformation of Lees Ferry to international fishing haven is just the most recent in a long, colorful, and sometimes bizarre history of human endeavor that has focused on this modest gap in the labyrinthine canyons of the Colorado River.

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--Researched and written by Shannon Kelly


References:

Reilly, P.T. 1999. Lee's Ferry: From Mormon Crossing to National Park. Edited by Webb, R.H. Utah State University Press, Logan, 542 pp.

Rusho, W.L. and Crampton, C.G. 1992. Lee's Ferry: Desert River Crossing. Cricket Productions, Salt Lake City, UT, 168 pp.


Resources:

Benenati, P. L., Shannon, J. P. and Blinn, D. W. 1998. Desiccation and recolonization of phytobenthos in a regulated desert river: Colorado River at Lees Ferry, Arizona, USA. Regulated Rivers 14: 519.

Blinn, D. W., Shannon, J. P., Stevens, L. E. and Carder, J. P. 1995. Consequences of fluctuating discharge for lotic communities. Journal of the North American Benthological Society 14: 233-248.

Booker, J. F. and Young, R. A. 1994. Modeling intrastate and interstate markets for Colorado River water resources. Journal of Environmental Economics and Management 26: 66-87.

Crampton, C. G. 1960. Historical sites in Glen Canyon, mouth of San Juan River to Lee's Ferry. University of Utah Press, Salt Lake City.

Dexter, L. R. and Cluer, B. L. 1999. Cyclic erosional instability of sandbars along the Colorado River, Grand Canyon, Arizona. The Annals of the Association of American Geographers 89: 238.

Griffin, E. R. 1997. Use of a geographic information system to extract topography for modeling flow in the Colorado River through Marble and Grand canyons. Masters Thesis. University of Colorado, Boulder.

Hereford, R. 2000. Recent alluvial history of the southern Colorado Plateau. <http://climchange.cr.usgs.gov/info/sw/scpalluvial/> 9/7/2000.

Konieczki, A. D., Graf, J. B. and Carpenter, M. C. 1997. Streamflow and sediment data collected to determine the effects of a controlled flood in March and April 1996 on the Colorado River between Lees Ferry and Diamond Creek, Arizona. Open-File Report U.S. Geological Survey, Reston, VA.

Leydet, F. 1967. River run. American West 4: 40-46, 71-72.

McKinney, T., Persons, W. R. and Rogers, R. S. 1999. Ecology of flannelmouth sucker in the Lee's Ferry tailwater, Colorado River, Arizona. The Great Basin Naturalist 59: 259.

Montgomery, E. L. and Harshbarger, J. W. 1992. Arizona hydrogeology and water supply. Hydrogeology Journal 1: 25-40.

O'Connor, J. E. and Ely, L. L. 1994. A 4500-year record of large floods on the Colorado River in the Grand Canyon, Arizona. Journal of Geology 102: 1-10.

Reilly, P. T. 1971. Warren Marshall Johnson, forgotten saint. Utah Historical Quarterly 39: 3-22.

Richards, M. T. and Wood, D. B. 1985. The economic value of sportfishing at Lees Ferry, Arizona. Pp. 219-222 In: Johnson, R. R., Ziebell, C. D., Paton, D. R., Ffolliott, P. F. and Hamre, R. H., editors. Riparian ecosystems and their management: Reconciling conflicting issues. North American Riparian Conference, Tucson, AZ (USA), 16-18 Apr 1985, Tucson, AZ.

Stevens, L. E., Schmidt, J. C., Ayers, T. J. and Brown, B. T. 1995. Flow regulation, geomorphology, and Colorado River marsh development in the Grand Canyon, Arizona. Ecological Applications 5: 1025-1039.

Tarboton, D. G. 1994. The source hydrology of severe sustained drought in the Southwestern United States. Journal of Hydrology 161: 31-69.

Usher, H. D. and Blinn, D. W. 1990. Influence of various exposure periods on the biomass and chlorophyll a of Cladophora glomerata (Chlorophyta). Journal of Phycology 26: 244-249.