A NATIONAL PLAN FOR AMERICAN FORESTRY 



375 



GULLYING ON CLEARED LANDS 



In 1929, the Lake States Forest Experiment Station made a 

 field examination to determine the number and extent of the active 



EXTENT OF 

 EROSION 



More -than 75% 

 SI -75% 



---- II -25 



FIGURE 8. Map of Illinois prepared from data of the Illinois Soil Survey, showing the percentages of 

 county areas affected by erosion of a "serious" and a "destructive" nature combined. (See text for 

 definition of classification.) 



gullies in Buffalo County, in southwestern Wisconsin, an area of 

 about 50,000 acres containing the river terrace land along many 



J 68342 33 vol. 1 g". 



