Sagavan i rk tok River upstream study area, note predominance 

 of bou I ders. 



b) Sagavan i rk tok River mined study area showing extensive 

 sedimentation and backwaters. 



Figure 44. Reduction of instream cover as provided by 

 boulders at Sagavan i rk tok River, 3 August 1978 (flow level, 

 60 m /sec, = 155% of estimated mean annual flow). 



155 



