with mechanical control 

 techniques showing more 

 impact than chemical or 

 manual methods (Douglas 

 1981). Studies of chemical 

 controls for vegetation 

 revealed that some herbi- 

 cides enter nearby streams 

 even when crews follow 

 recommendations for appli- 

 cation. 



Prescribed burning in areas 

 containing ephemeral 

 streams in the Piedmont of 

 South Carolina showed no 

 significant effects on stream 

 runoff, sediment, or nutrient 

 concentrations (Douglas 

 and Van Lear 1983). Similar 

 results were reported in 

 coastal plain pine forests 

 (Richter and others 1982). 

 Tests of effects of normal 

 silvicultural practices on 

 nonpoint pollution conduct- 

 ed by J.D. Hewlett (1983) 

 and associates at the 

 University of Georgia 

 showed no significant 



effects on water quality or 

 soil fertility. Such research 

 findings have been applied 

 in the development of "best 

 management practices" 

 required by Federal and 

 State water-quality legisla- 

 tion to assure acceptable 

 standards of water quality. 



Research at the Coweeta 

 Hydrologic Laboratory in 

 the mountains of North 

 Carolina outside the south- 

 ern pine region likewise 

 added greatly to the fund 

 of knowledge on general 

 relationships between water 

 and forest management. 

 Experiments by C.R. Hursh 

 and M.D. Hoover at this 

 famous installation have 

 shown effects of various 

 treatments of hardwood 

 vegetation on streamflows 

 and soil movement. Results 

 have been widely used in 

 the management of both 

 public and private forest 

 watersheds. 



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