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1 ' San Joaquin County, California 141 NN )Ili AV l 4 V , - r� A v i'. /J/ {;�t➢➢ 4`rr I ,4 & ' Figure 4.—Typical vegetation In an area of WisflabArburua-San Timoteo complex,30 to 50 percent slopes,in the middle ground.The riparian vegetation in the foreground is In an area of Xerofluvents-Xerorthents complex, 1 to 8 percent slopes,occasionally flooded. Castle Rock is in the background. rooting depth is limited by the bedrock at a depth of 20 severe decrease in productivity and in the potential of ' to 40 inches. Runoff is rapid, and the hazard of water the unit to produce plants suitable for grazing. The very erosion is very severe. steep topography and the resulting runoff reduce the This unit is used for livestock grazing or wildlife amount of rainfall that enters the soils. The slope limits habitat. General management considerations include access by livestock and results in overgrazing of the the very severe hazard of erosion, the slope, the very less sloping areas. The very low or low available water low or low available water capacity, and the limited capacity limits the production of desirable forage plants depth of the Wisflat soils. The characteristic plant in some areas. Fencing is difficult because of the depth ' community is mainly soft chess, red brome, and to bedrock. California sagebrush on the Wisflat soil; soft chess, This map unit is in capability subclass We (oxtail fescue, and red brome on the Arburua soil; and (MLRA-15), nonirrigated. It is in vegetative soil group G. ' soft chess, wild oat, and filaree on the San Timoteo soil. Grazing should be controlled so that desirable 277—Xerofluvents, 0 to 2 percent slopes, vegetation, such as soft chess, is maintained and frequently flooded. These very deep, excessively enough vegetation is left standing to protect the soils drained and well drained, nearly level soils are on flood from erosion. Loss of the surface layer results in a plains and interchannel bars in river channels. They 1