1991
  • Non-ICIMOD publication

Share

450 Views
Generated with Avocode. icon 1 Mask color swatch
0 Downloads

Satellite data aids in monitoring reservoir water and irrigated agriculture

  • Jagadeesha, C. J.
  • Palnitkar, J. G.
  • Summary

The reduction of the life of a reservoir due to sedimentation has serious consequences in a country like India. In the life period of a multipurpose reservoir project successive land and hydrographic surveys provide data for correcting the capacity curves. Silt deposition takes place in both the dead and live storage zones simultaneously. Knowledge of the pattern of deposition in the live storage portion is also necessary for preparation of reservoir water use working tables in order to determine the success of the project. Satellite data on water spread area at various reservoir stages and average crop water requirements at different stages of growth (crop area information being obtained from satellite data) form two important inputs in monitoring reservoir water use on a fortnightly or monthly basis. One of the operational methods of finding pattern of distribution of deposited sediments between various zones of reservoir, the Borland and Miller (B&M) method, has been adopted. An operational working table for reservoir water balancing has been prepared using satellite data inputs, B&M method outputs, and field values on inflows and drawals (withdrawals) into and out of the reservoir. This is illustrated for the 1988–89 rabi/summer cropping season.

  • Published in:
    Water International, Vol.16, No. 1
  • Language:
    English
  • Published Year:
    1991
  • External Link:
    External link