Water 

 240 



230 



220 



210 



200 { 



Oct 66 

 Dale 



Apr 86 Jul 86 



a) Firm marsh (site 5) 



Feb 87 May 87 



Apr 86 



May 87 



b) True Floating marsh (site 10) 



Water 

 80 



70 



60 



50 



40 



30 



20 K 



Apr 86 



V/ 



r\ 



Jul 86 



Oct 86 

 Dal* 



Feb 87 



100 



May 87 Apr 86 Jul 86 



Feb 87 »*y 87 



c) Impounded swamp (site 18) 



d) Quaking marsh (site 9) 



Figure 7. Monthly water and marsh level variation at selected stations in the park from April 

 1986 to May 1987 illustrating different degrees of floating. Water levels are denoted by a "*" and 

 marsh levels are denoted by an V. Note that the two curves on the same plot are absolute to 

 each other, and that the vertical scales between plots are different 



259 



