_ 4 - 



far the most Important, draining an pren of more than 15,000 sq,mi, 

 (38,850 sq.km.), ^ large amount of fresh water is supplied in the 

 Pnssamaquoddy area through the St. Croix, Magaguadavic , and Digde- 

 guash rivers. The Chignecto area receives water from the Petltl- 

 codiac river while the most important supply in the Minos area is 

 from the Shubenacadie river. In the Annapolis Basin, the Annapolis 

 River and several large streams provide "he source of fresh water in 

 this area. 

 Tides 



The tides in the Bay of Fundy (Dawson 1908; Marmer 1926) are 

 unique throughout the world. The menn mnge of these tides varies 

 from 9<,0 ft. (2.7 m.) at the mouth to 44 ft. (13,3 m.) at the head. 

 During the time of spring tides the mean range is increased by approxi- 

 mately 14^„ 



The causes for these exceptional tides, which are the greatest In 

 the world, are explained by the combination of various factors. 

 Primarily^ the extreme tides are the result of the natural period 

 of the Bay of Fundy nnd the period of the oce^m tide being practically 

 the same. This results in resonance which is kept within bounds by 

 the frictlonel forces involved. In addition there is a further piling 

 up of waters near the head of the Bay resulting from the narrowing 

 and shallowing of the B^y of Fundy in this area. It is of interest 

 to note that tides In the Bay of Fundy are fundamentally of the 

 stationary wave type, with the times of slack water nearly the same 

 throughout the Bay, and the tid^l amplitude increasing with the 

 distance from, the mouth of the Bay, 



Tidal currents in the Bay of Fundy show no direct relationship 

 v/ith the tidal amplitude and are greatly influenced by shoals and 



