Geographic boundaries of the Great Basin
- The Great Basin is defined by the Sierra Nevada to the west
- Bounded by the Wasatch Range in the east
- Includes the Snake River Plain to the north
- Terminates at the Mojave Desert in the south
Water flow into the Great Basin
- Water flows from surrounding mountains into the basin
- Precipitation on the rim mountains contributes to the water sources
- Some rivers, such as the Humboldt River, enter the basin from outside sources
Water circulation within the Great Basin
- Many internal drainage basins exist within the Great Basin
- Lack of outlets to oceans leads to closed hydrological systems
- The Great Salt Lake is a remnant of a much larger prehistoric lake system
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