VI-27 



U.S. Geolngical Survey to investigate the literature 

 and additional contracts were let to perform sediment 

 case studies in estuaries of various types. 



Handbook Section 9. Uses 



Problem: While commercial use data -ire generally available, 

 recreational use is not so easilv documented. Only in areas 

 v;here intensive studies have been made are th3se concrete 

 data on participation days, boat use, swimming, sports 

 fishing, etc. The same is true of use by fish and wildlife. 



Solution: Examination of related data--fishino and hunting 

 license sales, the results of creel surveys, the number of 

 marinas and boat r>lips--permitted extrapolation wherever 

 feasible. Many of the data included in this area are estimates 

 by the field staff of the Bureau of Sports Fisheries and 

 Wildlife and State commercial and snorts fishing agencies. 



Handbook Section 10. Sources of Pollution 

 Problem: While the locations of most of the major \/aste 

 discharges are J.nown, information on the characteristics of 

 individual waste effl jents is extremely limited. They are 

 known accurately only for the largest municipal waste dis- 

 charges and for waste discharqes in areas which have been the 

 subject of an enforcement or technical assistance study. In 

 particular, knowledge of th? characteristics of individual 

 industrial waste discharges is very poor, anc data on them are 

 extremely scattered. This is also true of other waste discharges 



