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AERIAL SURVEY OF WATER QUALITY : AN INDIAN CASE STUDY 
  
  
S.Thiruvengadachari, N,G.Inamdar, S.V.Kotbagi, 
H,.G.Tambralli and B,L,Deekshatulu 
National Remote Sensing Agency 
hk, S.P.Road Secunderabad, 
500 003, INDIA, 
  
ABSTRACT 
As part of the two-and-half years experimental study on the use 
of remote sensing techniques for monitoring water quality, aerial 
surveys employing a eleven channel multispectral scanner suppor- 
ted by a metric camera system were conducted over two test sites. 
Analysis of airborne scanner data, based on simultaneous ground 
(water) truth data, resulted in maps of turbidity, chlorophyll, 
total dissolved solids and chlorides. Specifically the surface 
distribution of chlorides obtained for the first test site por- 
trayed the dilution of the paper mill effluent in the river 
vaters while the chlorophyll map of the second site indicated the 
biomass status of the rapidly eutrophying inland lake. 
  
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