causes increase in particle concentration but the 
surface area remains same; hence causing higher 
reflectance at lower turbidity values then in 
higher values of turbidity is (seen in fig.2) 
From Fig.2, we see that for better discerna- 
bility of water quality, channel 4 and 5 (i.e. 
0.5 - 0.6 m; 0,6 - 0.7 m are preferred). 
From Fig.h it can be seen that 11 channel 
scanner band nos. 2,4,8 and 9 are more useful in 
detecting different turbidity levels. 
From figs.5-7 it is established that the dilution 
of pollution concentration in a flowing water body 
can be detected using Multispectral Scanner data. 
Fig.8-11 show that the water absorbs light expo- 
nentially. This is in confirmation with the theory. 
Fig.12 shows that the Extinction ddpth varies 
linearly with the turbidity. The few anamolies found 
in these data are due to the experimental limitations. 
Fig.13-14 show the esatellite band ratio values 
versus turbidity values. 
Fig.15 shows Multispectral Scanner band ratio 
versus turbidity values. 
Fig. 16-19 show the radiance of a white plate 
immersed at various depths in waters of different 
turbidity values drawn on a semi-log graph sheet. 
The straight lines obtained further prove the ex- 
ponential nature of absorption of light. Further