• Bristlecone Pine

    Great Basin

    National Park Nevada

There are park alerts in effect.
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  • Wheeler Peak Summit Trail Closed

    A small smoldering fire near the trail has caused the closure of the Wheeler Peak Summit Trail. park staff is observing the fire. Check back here to get an update whne the trail will open. Alpine Lakes Loop and Bristlecone Trail are open. More »

  • Road Work at Great Basin National Park

    Road work will begin in Upper Lehman and Wheeler Peak Campgrounds. Campgrounds will be open but may be noisy and have large vehicles on the roads. The Scenic Drive is open with up to 15 min delays due to road work. Click more for details. Updated 9/9/14 More »

  • Travel Not Recommended - Wheeler Peak Scenic Drive Above 8,000 Feet

    Snow and ice may make travel on Wheeler Peak Scenic Drive unsafe, travel is not recommended at this time. Warmer weather later in the week is expected and conditions may improve. Please check back. 9/29/2014

  • Snake Creek Road and Campsites Closed

    The Snake Creek Road will be closed from the park boundary into the park to begin work on campsites, trails and restroom improvements. Work will continue until snow closes the project. Work will resume in Spring 2015.

Groundwater

lake bonneville

Lake Bonneville

Utah.gov

The Great Basin is a land defined by water, though water itself is scarce. The "basin" characteristic of the region means that no water in the region ever reaches an ocean, except by evaporation when water molecules return to the planet-wide hydrologic cycle, or by human intervention. Any precipitation that falls in the Great Basin, stays in the Great Basin.

In ages past, during the Pleistocene era (3 million years ago to 10,000 years ago), water was abundant as glaciers advanced and retreated in a climate that was an average 8 degrees (F) cooler than today. Lakes filled many of the basins to a depth of up to 1,000 feet. The shores of massive Lake Bonneville, a large pluvial lake that flooded much of the eastern Great Basin during this time, extended from the Wasatch Mountains in Utah to the Snake Range, in Great Basin National Park. To the west was a smaller lake in Spring Valley. Even farther west sat Lake Lahontan, covering much of western Nevada.

Change began, though, during the Holocene (10,000 years ago) and continued until as recently as 4,500 years ago. The climate warmed significantly, drying up many lakes in the Great Basin, leaving behind small remnants such as the Great Salt Lake in Utah and Pyramid Lake in Nevada. As glaciers melted, the water seeped into the gravel subsurface below, where it remained protected from evaporation. These resevoirs of groundwater, known as aquifers, remain beneath old lake beds.

These aquifers are recharged from surface precipitation. In the Great Basin Desert, however, with less than 10 inches of annual precipitation, there is little to no recharge of these resevoirs. Groundwater can discharge at the surface naturally in the form of springs, or seeps. Water is drawn unnaturally to the surface by the drilling of wells, or large scale groundwater pumping.

 
groundwater flow

Typical Groundwater Flow

USGS

Groundwater in Great Basin National Park
Great Basin National Park is part of two Environmental Protection Agency (EPA) defined drainage areas. The east side of the mountain range is part of Hamlin-Snake Valleys (USGS cataloging unit 16020301) and the west side is part of Spring-Steptoe Valleys (USGS cataloging unit 16060008).

Both Spring and Snake Valleys, neighboring valleys to the west and east respectively, are part of the Great Salt Lake flow system, with water flowing underground to towards the Great Salt Lake in Utah.

The most recent research done regarding groundwater in the Great Basin National Park area was completed as part of the Basin and Range Carbonate Aquifer System Study (BARCASS) by the USGS and Desert Research Institute. To see their complete reports, visit: http://nevada.usgs.gov/barcass/

Did You Know?

Mountain Lion

Great Basin National Park's mountain lions feed primarily on mule deer but also include porcupines, rabbits, bighorn sheep, beaver, elk, marmots, and small rodents in their diets.