Threebear
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The Threebear soil is the state soil of Idaho. These soils are found in the forested mountains of north-central Idaho and have a mantle of volcanic ash up to ~45-cm thick. This volcanic ash came from the eruption of Mount Mazama (now Crater Lake, OR) approximately 7,600 years ago. Threebear soils also have a fragipan that restricts downward percolation of water. As a result, a perched water table is usually present for 6-8 months of the year. Western redcedar, Douglas-fir, and western white pine are common trees supported by Threebear soils. This forest soil is mainly used for timber production and wildlife habitat. |
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Threebear Profile |
Landscape Picture |
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| Official Soil Series Description for Threebear | ||
| Extent Map for Threebear (type THREEBEAR in MAP SERIES) |
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| Idaho NRCS link State Soil - Threebear | ||
| NRCS State Soil Web Site and Listing | ||
| Threebear Soil Represents Idaho In New Smithsonian Exhibit | ||
| Dig it! Secrets of Soil | ||
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Dig It! Opens to a Crowd at the Smithsonian's National Museum
of Natural History. Soil monoliths on display in the
Secrets of Soil are viewed by visitors. The monoliths shown
are Puerto Rico, California, Threebear (Idaho), Vermont. |
