VARIATIONS m THE LEVEL OP THE CANADIAN LAKES. 19 



water on the mitre sill at the Black Rock Guardlock would 

 be less than five feet, through which all the water for the 

 supply of a canal 150 miles long would have to flow. 

 This contingency formed the subject of a memorial to the 

 Legislature of the State of New York in 1854. 



The following tables and memoranda are abbreviated 

 from a paper by Major Lachlan, communicated to the 

 Canadian Institute in July 1854.* 



Date. 

 1790 



1795 

 1801 

 1810 



1815 



VARIATIONS IN THE LEVEL OP LAKE ERIE. 



Authorities. 



Comparative Level. 



1st maximum, being 5 ft. 6 in. 

 above lowest level. 



1st minimum. 

 2nd maximum. 

 2nd minimum. 



below 1838. 



•d m 



183£ 



Reported 6 feet 



1820 3rd minim, or zero of comparison. 



1827-30 4th maximum. 



1832 

 1838 



1846 

 1853 

 1859 



4th minimum. 

 5th maximum. 

 zero. 



5 ft. 3 in. above 



Hall, Higgins, Whittlesey, 



Mather, &c. 

 Weld, Whittlesey. 

 Higgins, Houghton, Whiting. 



Whittlesey. 



Houghton, Higgins, &c. 



„ „ Whittlesey. 



Houghton, Higgins, Whiting. 



American Journal of Science, 

 Dewey, &c. &c. 



5th minimum. 2 feet above zero. 

 6th maximum. 



April, 5 feet 6 inches above zero 

 of comparison. 



Years of maximum Level 

 of Lake Erie. 



Years of minimum Level 

 of Lake Erie. 



1790 

 1801 

 1815 

 1827 

 1838 

 1853 



1859 5 ft. 6 in. above zero. 



1795 

 1810 



1820 zero of comparison. 



1832 



1841 



1846 



* See Canadian Journal, 1st Series. On the Periodical Rise and Fall of 

 the Lakes, by Major Lachlan. 



