Earth:Threebear (soil)

Short description: State soil of Idaho

Threebear soil is the official state soil of the U.S. state of Idaho.

Profile

The Threebear series consists of moderately well drained soils formed in silty sediments with a thick mantle of volcanic ash. These soils are moderately deep to a fragipan. The name “Threebear” is derived from a creek in Latah County, Idaho. These soils are on hills with slopes of 5 to 35 percent.

Threebear soils are used mainly for timber production and wildlife habitat. The potential natural vegetation is western redcedar, grand fir, Douglas-fir, western larch, and western white pine. The average annual precipitation is about 36 inches (900 mm), and the average annual temperature is about 42 °F (6 °C).

References

• Idaho State soil

See also

• Pedology (soil study)
• Soil types
• List of U.S. state soils