210 



United States 

 of 



Iture 



,'•££>-. United Stat 

 \LX)f] Department 

 SS^ Agriculture 



Forest 

 Service 



S£? 



li 



Washington 12th & Independence SW 

 Office P.O. Box 96090 



Washington, DC 2OO9O-609C 



ESTIMATE OF ACRES AFFECTED UITH 100 FOOT RIPARIAN BUFFERS 



Estimate of che number of acres associated with an amendment for HR 987 

 (Mrazek) by Miller to require a minimum of a 100 foot buffers on each side o: 

 all fish screams and their tributaries. 



Existing direction to protect riparian habitat and water quality represents 

 about 3% to 5% of productive forest available for harvest being reserved as 

 buffers. The current Geographic Information System (CIS) Inventory indicates 

 that 6% to 9% of the productive forest would be in the buffer of primary stre 

 channels. It is estimated that 20% to 23% of che productive forest land is i 

 buffers of tributaries not in CIS. 



ANALYSIS SUMMARY 



CIS INVENTORY 



TOTAL LAND AREA 



100' BUFFERED LAND AREA 



PERCENT LAND AREA IN BUFFER 



ACRES 



555,545 

 28.759 



5% 



TOTAL PRODUCTIVE FOREST LAND 

 RECENT HARVEST AREAS 

 LOU VOLUME SAULOG ACRES 

 MEDIUM VOLUME SAULOG ACRES 

 HIGH VOLUME SAULOG ACRES 



TOTAL 



34,176 

 83,321 



118,552 

 39,909 



275.958 



PRODUCTIVE FOREST LAND IN RIPARIAN BUFFER 



RECENT HARVEST AREAS 



LOU VOLUME SAULOG ACRES 



MEDIUM VOLUME SAULOG ACRES 



HIGH VOLUME SAULOG ACRES 

 TOTAL 



PERCENT PRODUCTIVE FOREST LAND 

 IN CIS BUFFER 



1.603 

 5.004 

 9.495 

 3_J05 



19,407 



7% 



ESTIMATE OF TRIBUTARIES NOT IDENTIFIED IN GIS 



TOTAL FOREST LAND SAMPLED 3,441 



TOTAL FOREST LAND IN RIPARIAN BUFFER 756 



PERCENT PRODUCTIVE FOREST LAND IN 100 FOOT 

 BUFFER NOT IDENTIFED IN GIS 



(THIS IS A MEAN AVERAGE - THE RANGE OF TRIBUTARIES NOT 

 ON THE GIS FOR INDIVIDUAL HARVEST UNITS WAS FROM 0-80%) 



22% 



TOTAL ESTIMATE 



29% 



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