Tanana (soil)
The Tanana soil is the official state soil of Alaska.
Profile
The Tanana soil consists of shallow, well drained, moderately permeable soils formed in materials weathered from limestone. They are gently sloping to very steep soils on foot slopes and side slopes of limestone hills. Slopes range from 2 to 60 percent. The mean annual precipitation is about 70 inches (1,800 mm) and the mean annual temperature is about 76 degrees F. The soil is named after the Tanana River in Alaska.