.■'*' 



>!.' 



Figure 5l. — Backwater along the bank of the lower Ocqueoc River, A 



high concentration of ammocoetes was present in this bed. 



The bottom type was of muck and silt containing much organic 

 debris. 



^jfife-fj 



,* 



P.. 



m 



■\*. 





Figure 52. — Eddy along the margin of a deep gravel-bottomed pool in 

 the lower Ocqueoc River. Muck and silt deposits as much 

 as 1 1/2 feet deep harbored great niimbers of lamprey larvae. 



- 11^2 - 



