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TOUR NO. 2

Human Impacts

on the GSLB

 

Bingham Copper Minepit

Modern Human Impacts 
Great Salt Lake Basin and Ecoregion

Resource Extraction Activity

    Among the most visible impacts in the region are the traces left by miners and prospectors. See this cross-sectional topographic map of the Tooele / Oquirrh Mountains area as well as the photos of nearby Bingham Copper Mine--the largest open-pit copper mine in the world. 

    Mine pit ore mover tire - Bingham Copper Mine

    Bingham Copper Minepit - aerial

    Bingham Copper Mine pit - from visitor center on rim

    Magna - Kennecott Copper Smelter

    Magna copper smelter

    Nearby is the Magna Kennecott Smelter with its huge tailings pond visible easily in this satellite image. Look also at this topographic map of the Saltair / Magna area west of Salt Lake City. 

    In the surrounding mountains there are also many active and abandoned mines including famous Ghost Towns that trace man's history of minerals extraction in the region. See for instance: 

    Old City Hall - Ophir Ghost Town Ophir Ghost Town Sign Closed - entrance to Mercur Mine site Mercur The Behrens Trench pump - Great Salt Lake Mineral Corp. Mining companies have also extracted important evaporite resources from the lake. Pictured here is the pump and pipeline of the Great Salt Lake Minerals Corporation which brings saline water over the Behrens Trench to its evaporation ponds. You can also study more about salt production at the Salt Industry page. 
    Mag Corp factory The MagCorp facility in the West Desert also extracts important minerals such as magnesium.  It has also been a focus of some controversy between environmental activitists and mining interests due to emissions of toxic chemicals.  The amount of emmissions by some measures is among the highest for a single facility of its type.

    Brine-shrimp fishing has also become a major extractive economic activity that is generating controversy and concern. In fact, the industry has gone through a recent boom that resembles a type of resource rush.  This activity is of concern to biologist who wonder whether the carrying capacity of the Great Salt Lake is being threatened. Most of the shrimp ends up as an export to Japan where it is used for commercial purposes. 

    Learn more from the Great Salt Lake Project at Westminster College of Salt Lake City. See some of th materials by Ty Harrison a biological ecologist and his students such as the Great Salt Lake Playa Foodweb Project. Read also about brine-shrimp ecology at the USGS site as well as Planktonic and Benthic Ecology of the Great Salt Lake. 

Military-Industrial Activity

    Modern industrial and military activities of several types have come to impact the region besides the traditional salt extraction and mining. Recent economic  activities such as power generation, brine shrimp fishing, and military weapons testing including the Toole / Dugway Chemical Weapons Incinerator has generated considerable local debate and even protest.

    Morton Thiokol, Inc.
    North of Promontory
    Point is the site for testing of
    shuttle booster rocket
    engines
    by the Thiokol
    Company.
    Inter-Mountain Po Another industry that has sought the open space of the West Desert are large electrical generation stations such as the Inter-Mountain Power Project near Delta, Utah. It uses coal mined in nearby eastern Utah and transports the electricity on high powered lines to other states. 

    Its siting has caused some concern.  It is located within a zone that is the last region in the lower 48 states with almost perfect visibility--often over a 100 miles. Unfortunately, this powerplant and others projected to come will decrease that pristine visibility.

    Little Sahara State Park Nearby is a small park that in my opinion best epitomizes the solitude and rugged beauty of the Great Basin--Little Sahara State Park and its desolate sand dunes. The sands were deposited by wind that moved around alluvial deposits once buried below ancient Lake Bonneville. Part of the State Park is kept semi-wild but another part has become heavily used by off-road vehicles--therein is another debate. Unfortunately, this park with its pristine high visibility is also within sight of the large power-generation plant noted above.  In fact the smokestack is visible on the skyline from certain places.
    chaining of pinyon-juniper rangelands There are other issues--right on the boundary of a wilderness study site adjacent to the park large areas are being denuded.  The technique used is called  chaining.  his is a process of dragging a heavy chain between two bulldozers which then rips up the pinyon-juniper trees, scrub and other vegetation to replace it with exotic pasture grasses.

    This site along with many others across southern Utah have become heavily embroiled in the much larger national and statewide debate about how much land in Utah should be declared as wilderness.  See some of the websites listed below which explore the pro's and con's of this major land debate focused on the value of open space and wilderness. In summary, the Greater Salt Lake Ecosystem Region, which many assume to be barren, desolate and even dead ,is being threatened in several ways and is increasingly the focus of controversy.  This type of debate is growing around the Inter-American West.

Recreation and Tourism - SALTAIR

    Quite early the Great Salt Lake became an oddity to be visited by tourists.  One of the favorite places to visit was around famous Saltair Pavilion (see below):

    Funseekers and tourists on The Great Salt Lake State Beach near Saltair Modern tourists and local joyseekers near Saltair on the beach for a sand castle-building contest. Saltair Pavilion - flooded (1983-84) The famous Saltair Pavilion and surrounding tourist facilities was flooded (1983-84) by the rising waters of the Great Salt Lake. During the Roaring 20's (see historical images) and in the early post-World War II era Saltair's large dance floor hosted some of the era's greatest Big Bands.  Today it often hosts major Rock-Concerts.
    Saltair Pavilion during reconstruction - low water stage.
    The Pavilion during
    reconstruction after the lake receeded (1993).
    Entrance to Saltair resort - boat dock and railroad cars Modern recreational boaters also use the lake extensively--see the Great Salt Lake Yacht Club site.  As the yacht club declares--it is home to the world's saltiest sailors

    The Bonneville Salt Flats are world-famous as the site where the land-speed record has been broken several times!

    The Bonneville Salt Flats near sunset - near the speedway Unfortunately, there is concern that the amount of salt being deposited is decreasing dramatically. This has affected the racing surface and actually slowed down racers.  Eventually it may even require abandonment of the site as a speedway. Some suggest human intereference has been a prime cause--diversion of saline waers for mineral extraction.
    Blackrock Desert southwest of Sevier Lake Some of the most recent land-speed record events, in fact, chose to do attempt their  feat in the Black Rock Desert in Nevada partially because of this growing problem.

    In sum, many types of people have come to the Great Salt Lake in search of fun, adventure and profit--some even to break the world land speed-record. The debates, public and private, about the lakes importance or uniquesness and how to manage and preserve it continue unabated.  See some of the issues as described by the Friends of the Great Salt Lake group.

Attempts to By-Pass the Lake Barrier
    Many individuals and groups who came to the Great Salt Lake Basin were attempting to build or find transportation arteries across and around the barrier which was the Great Salt Lake and the West Desert / Great Basin.
    The first published reports on the Great Salt Lake came from the Dominguez-Escalante expedition of 1776. During the 1800s the lake and vicinity were visited by a number of mountain men and government explorers, including Jim Bridger who reported in 1825 that he had reached an arm of the Pacific Ocean. It was explorers and mapmakers such as B.L.E. Bonneville (whose map of 1837 first showed the Great Basin and Great Salt Lake as an area of interior drainage) and others such as John C. Fremont, John W. Gunnison, and Howard Stansbury who named and explored its islands and lakeshores. The following map of the Great Salt Lake shows many of the features still bearing the names of these early explorers. 

    The lake remained a formidable barrier to western expansion for a long time.  The most famous group to be literally stuck in the mud flats and thus delayed in getting across the Sierra Nevada mountains was the tragic Donner party of 1846.

    Pony Express station monument The Bonneville Salt Flats and the Great Salt Lake were also a significant barrier for the Pony Express (History). Part of that famous route still exists and crosses some of the most desolate parts of the West Desert (see Utah Pony Express Trail).
Railroad Construction
    The first transcontinental railroad bypassed the lake to the north. The Union Pacific, from the east, and the Central Pacific, from the west, met in Promontory Point in 1869 . Go to the Golden Spike National Monument web-site which commemorates the famous mid-1800s event that first linked the east and west coasts of the US by railroad. 

    In 1902 the Southern Pacific Railroad built its Lucin Cutoff across the lake from Ogden to Lucin.  Tis shaved-off over seven hours of travel time. Building this required over 28,000 wooden piles to be driven into the soft lake bottom to support the trestle.  Huge amounts of gravel and rock fill were also used eventually creating a permanent dike that has blocked off much of the northeast arm of the lake.

    Railroad causeway along southern edge of lake - today Railroad-builders from the past and even today have labored intensely to build causeways across this formidable barrier.  The photo above shows the newest causeway across the southern end of the lake near Magna.
    Old railroad trestle (pilings) from old causeway. What remains of the old wooden trestle that once crossed the lake from north of Ogden to Promontory Point?
    Railroad causeway to Promontory Point Old causeway and dike - Great Salt Lake A view of the old causeway which also became a dike--built across the northern end of the lake.

Current Growth and Future Prospects

    In the last few years the Great Salt Lake region has experienced very rapid economic and population growth.  In fact reconstruction of the I-15 Interstate freeway system through Salt Lake City was one of the largest public works projects ever in the state.  Most of this construction was in preparation for  the 2002 Winter Olympics.  It caused considerable debate over potential pressure on aquatic and terrestrial ecosystems of the Great Salt Lake region. 

    As mentioned earlier, Antelope Island (see State Parks page) has become the focus of a land use controversy regarding plans to build a causeway direct from Salt Lake City to the southern tip of the island (see the Antelope Island Draft Access Management Plan - 2004 (PDF) ). That is but one evidence of growing pressure on open land resources that continues--even in this supposedly protected state park. How the resources are managed--in this case for tourism--will also impact the island significantly. Debates are also increasing over management of the adjacent canyons, e.g. Little and Big Cottonwood Canyons. 

    The most recent controversy is just developing over the adviseability--or not--of building a new freeway system called the Legacy Highway. This major transportation corridor would cut through many of the most fragile wetlands along the lake's east side.  Some of the issues involved are discussed by the Friends of the Great Salt Lake.

    In addition, plans for a major expansion of the Salt Lake International Airport--now one of the nation's busiest--is also causing serious debate. The airport would also have to expand into sensitive wetlands near the mouth of the Jordan River.

Learn More about Current Debates

    Farewell

    I hope you have enjoyed your tour! Keep tuned to this site.  Our goal is to continually add information and photos that update trends on Antelope Island as well as in the Great Salt Lake Ecosystem region at large. Thanks for coming and do give us your evaluation of this virtual tour and suggestions on improvement. 

    Contact:Robert E. Ford Email: rford@univ.llu.edu


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Created 9/15/96 - Last Revised: 10/30/05 - Robert E. Ford Email: rford@llu.edu