SOIL SURVEY OF THE REDDING AREA, CALIFORNIA. 



21 



' The Anderson gravelly loam is derived mainly from the adjacent 

 and more elevated formation of the early stream gravels and sedi- 

 ments giving rise to the soils of the uplands. It is of rather recent 

 alluvial origin, the material forming it having been transported only 

 short distances and distributed by the flood waters of intermittent 

 streams. Under irrigation it is well adapted to peaches and grapes, 

 and if well cultivated in favorable locations produces fair yields of 

 these crops without irrigation. Alfalfa is also grown to a very 

 limited extent on some of the irrigated parts of the type. Much of 

 this soil is, however, utilized only for grazing. 



With thorough cultivation, supplemented when practicable by 

 irrigation from private reservoirs or by the pumping of ground 

 water, considerable areas of the less gravelly and porous bodies of 

 this soil type, now used only for grazing, can eventually be rendered 

 productive and brought under cultivation. 



The results of mechanical analyses of fine-earth samples of the soil 

 and subsoil are given in the following table: 



ANDERSON FINE SANDY LOAM. 



The Anderson fine sandy loam consists typically of a fine sandy 

 loam of light-red to grayish-red color, generally carrying a moderate 

 amount of rather small subangular or waterworn gravel, and extend- 

 ing to a depth of 3 to 6 or more feet. It is somewhat porous and 

 friable and easily maintained in a good condition of tilth. "When less 

 than 6 feet in depth it is generally underlain by river sands and gravels, 

 although occasionally by hardpans, clays, or volcanic tuff. 



This soil type is not extensive and occurs mainly as narrow, elon- 

 gated bodies occupying the bottoms and slopes of the narrow valleys 

 of Churn and Stillwater creeks, often grading quite imperceptibly into 

 the adjacent soil types. 



The surface is slightly sloping but often scored or pitted by erosion, 

 or marked by minor surface irregularities or low terrace lines. It 

 usually supports a vigorous growth of timber and brush. Parts of the 

 lower lymg bodies are sometimes subject to overflow during flood 

 periods. 



The soil consists largely of the reworked material derived from the 

 adjacent red soils of the uplands, transported and depositeil by the 

 flood waters of the minor streams along which it occurs. 



