10,000 (— 



5,000 



^ 1,000 



500 



300 



RDAYUSE in 1,000 

 "° user days 



^ ANNH20 in 



^ 1,000,000 gallons 



■^LABTOT 



i 



_L 



inn I I I I L 



.^^ oS^ c^^ c^' <i^^ cN"' 



■S^ ^^ ^^ ^^ 



Objective function 



Figure 3.3. Effect of objective optimized on annual water consumption 

 (ANNH20), number of recreation user days (RDAYUSE) and annual 

 labor employment in man-years (LABTOT). (Lines connecting points 

 are descriptive and should not be interpreted to represent a con- 

 tinuous function.) 



17 



