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of freshwater. The determination of the effects of upstream manage- 

 ment of the fresh water resource on the marine environment have only 

 recently become of concern to oceanographers and marine biologists. 

 Current examples of this problem in Chesapeake Bay are (1) the 

 deepening of the Chesapeake and Delaware Canal, which will increase 

 the net amount of water flowing from the head of Chesapeake Bay into 

 Delaware Bay from about 900 cubic feet per second to about 2100 cubic 

 feet per second, and (2) the Baltimore Water Supply Tunnel which taps 

 the Susquehanna River above Conowingo Dam. Fresh water diversions 

 can alter the salinity regime of the headwaters of the Bay, affecting 

 the spawning opportunity of many species of fish. Further study of 

 these problems will undoubtedly reveal presently unknown ecological 

 ramification of the estuary's struggle to reach and maintain suit- 

 able equilibrium in the wake of the incursions of man (Corps, 1970). 



References : 



The Corps of Engineers. 1970. The Chesapeake Bay Plan of Study. 

 Baltimore District, Baltimore, Maryland. 



Forest Service and Soil Conservation Service. 1972. North 

 Atlantic Regional Water Resources Study, Land Use and Manage- 

 ment. U. S. Department of Agriculture, Washington, D. C. 



Jenkins, D. W. 1971. Agriculture and Forestry. Identification, 

 Vigor and Disease. Article from Remote Sensing of Chesapeake 

 Bay, National Aeronautics and Space Administration, Washington, 

 D. C. NASA SP-294. 



McHarg, Ian. 1972. Integrity of the Chesapeake Bay. Urban 

 Research and Development Corporation, Bethlehem, Pa. 



Saila, Saul B. 1973. Coastal and Offshore Environmental 

 Inventory. University of Rhode Island, Kingston, Rhode Island, 

 Marine Publication Series #2. 



Shands, W. E. and Mathes, Ruth. 1972. The Future of Chesapeake 

 Bay. Sierra Club Bulletin, Vol. 57, No. 4. 



State of Maryland. 1968. Proceedings of the Governors Conference 

 on Chesapeake Bay. Westinghouse Ocean Research and Engineering 

 Center, Annapolis, Maryland. 



U. S. Department of the Interior, Fish and Wildlife Service. 1970. 

 National Estuary Study, vol. 3. U. S. Government Printing Office, 

 Washington, D. C. 



Wass, Marvin L. and Wright, Thomas D. 1969. Coastal Wetlands of 

 Virginia. Virginia Institute of Marine Science, Glouster Point, 

 Virtginia. 



