During years when runoff is high, fresh deposits of alluvium are laid down and removed. Included in the mapping are small areas of Botella and Corralitos soils and of Elder shaly loam. Permeability is moderately rapid. Surface runoff is very slow. The erosion hazard in none to slight except when water overflows from higher areas.
Fertility is moderate.
This is a classic example of Elder Sandy Loam. Note the powdery, sandy texture. This is a very soft soil with incredible drainage. These types of soil are alluvial, meaning they have moved slowly down from the surrounding hills by way of erosion and water. The smallest sand particles are taken from the soils at higher elevation, and move via water and wind into the flatter, low-lying areas.