Table A .--Estimated sheet erosion on Monument Ridge and 

 the Vigilante Experimental Range as a function 

 of -plant and litter cover and organic matter 

 content of the surface 2 inches of soil 



Oreanic matter content {% bv weioht) 



over : ; = ; ; ^= — 



C^J : 2 : 4 : 6 : 8 ; 10 ; 12 

 __ Pounds per mi lacre ------- 



" 30 



10 



78 



4 



.39 



1 



.83 



.78 







35 



9 



11 



3 



88 



1 



.69 



.76 



.35 





40 



7 



53 



3 



35 



1 



.53 



.71 



.34 





45 



6 



10 



2 



83 



1 



.35 



.66 



.33 





50 



4 



83 



2 



35 



1 



. 17 



.59 



. 31 



. 17 



55 



3 



75 



1 



90 





99 



.53 



.29 



. 16 



60 



2 



85 



1 



51 





82 



.46 



.26 



. 15 



65 



2 



11 



1 



17 





66 



.39 



.23 



. 14 



70 



1 



54 





89 





53 



. 32 



.20 



.13 



75 



1 



09 





66 





41 



.26 



. 17 



.11 



80 





76 





48 





31 



.21 



. 14 



.10 



85 





52 





34 





23 



. 16 



.11 



.08 



90 





35 





24 





17 



. 12 



.09 



.07 



95 





23 





16 





12 



.09 



.07 



.06 



100 





14 





11 





08 



.07 



.05 



.04 



Monument Ridge and Vigilante Experimental Range .- -Table 4 lists estimated sheet 

 erosion as a function of plant and litter cover and organic matter content of the sur- 

 face 2 inches of soil. These values should be multiplied by the appropriate correction 

 factor in table 1 to correct for slope. 



Diamond Mountain .- -The nomogram [figure 17) for the Diamond Mountain Cattle Allot- 

 ment is used as follows: 



1. Draw a line from the plant and litter cover percentage on line A to the organic 

 matter content of the surface inch of soil on line B. 



2. Draw a line from the intercept on line C to the slope gradient on line D. 

 ■ 3. The intersection on line E is estimated sheet erosion. 



