vf 



a ) 16 Sep t ember I 972 



b) 2 August 1976 



Figure 49. Sequence of aerial photographs showing effects of overmining 

 the inside of a meander bend at Middle Fork Koyukuk R i ver-Upstream. 

 Immediately following mining (b) there was an increase in backwater 

 areas. The next year (c) the meander was partially cut off, creating a 

 variety of low velocity habitats. 



163 



