^ 



:;ai;uPifi^*. 



Figure 82. Gravel fill ramp used to protect ttie incised 

 bank at ttie Sagavanirktok River study site. 



erosion frequently resulted. In permafrost areas both thermal and hydraulic 

 erosion induced by surface travel on unprotected banks can, and at the 

 Ugnuravik River site did, create uncontrollable problems (Figure 83). At 

 sites separated from active channels by buffers, a heavy layer of rip rap on 

 the buffers significantly increased their effectiveness (Figure 84). 



266 



