Journal of the Royal Society of Western Australia, 87(2), June 2004 
2.2 
2.0 
1.8 
1.6 
1.4 
1.2 
1.0 
0.8 
0.6 
0.4 
2.2 
2.0 
1.8 
1.6 
1.4 
1.2 
1.0 
0.8 
0.6 
0.4 
Figure 3. Changes in water pH, salinity and depth over the period 1997 to 2002. Water chemistry and depth were recorded twice yearly 
in September and November, (a) Yarnup; (b) Lake Unicup. 
32 
Depth (m) Depth (m) 
