50 FIELD OPERATIONS OF THE BUREAU OF SOILS, 1918, 



Riverwash, while quite extensive, is of no present agricultural 

 value. It consists of material of various textures and is subject to 

 change by river overflows from year to year. 



In general, the soils of the county can be improved by the applica- 

 tion of organic matter, deeper plowing, the more liberal use of lime, 

 and the more extensive growing of alfalfa. 



The greater part of the river first bottoms has been leveed and 

 drained by systems of ditches flowing into the rivers through pipes 

 equipped with flood gates or, in most cases, emptied by means of 

 pumps raising the water over the levees. 



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