267 



DRAFT 



Tmble 4. Estimates of sediment discharge into streams of the Tillamook Bay Basin resulting from upland 

 erosion (stream bank erosion not included in this analysis). Data extracted from the SCS report 

 'Tillamook Bay Drainage Basin Erosion and Sediment Study, Oregon-Main Report' (USDA-SCS, 

 1978). 



The SCS report noted that forestry is a significant contributor to the sediment problems 

 in TiUamook Bay (USDA-SCS, 1978): 



"The total sediment in the system is the crucial problem. " 



"Erosion and sediment delivery rates on forest lands still make 

 significant contributions to the problems of the basin. The mean annual 

 gross erosion amounts to 286,245 tons. The mean annual fluvial [into 

 the streams] sediment load is 51,602.6 tons from forest lands. These are 

 95.6 percent and 85.1 percent, respectfully, of the basin totals." 



The OFIC report failed to acknowledge these conclusions by the original authors. 



Regulations (page 175^: 



'In 1972, forest practice rules began to slow down salmonid habitat and 

 water quality degradation caused by forestry ope rations , and gradual 

 improvemeru continued through 1986' 



This statement implies that logging is no longer a major cause of salmonid habitat 

 degradation because of forest practices rules. On the contrary, data collected recently 

 by ODFW Research and Development suggests that the productive potential for coho 

 salmon of Deer Creek (Alsea Watershed Study stream - patch cut) has declined by 60% 

 since 1966, whereas, the productive potential of Flynn Creek (uncut) has remained the 

 same. 



A-61 



