Click on “Download PDF” for the PDF version or on the title for the HTML version. If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options. Simulation and Optimization for Management of Water Resources in a Canal Command AreaPublished by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org Citation: Paper number 022025, 2002 ASAE Annual Meeting . (doi: 10.13031/2013.9704) @2002Authors: S.S. Shirahatti, M.P. Kaushal, A.K.Jain, S.D. Khepar Keywords: MODFLOW, groundwater modeling, water table profile, response matrix, water allocation modeling, optimal cropping pattern
The groundwater flow model MODFLOW and a chance constrained linear programming
model developed for surface water allocation were coupled using response matrix approach and
applied to the Upper Krishna Project irrigation command area in the south Indian state of Karnataka.
For this purpose total water resources availability, water needs and water balance of the area were
assessed. The groundwater model revealed that the average absolute simulation error between
observed and simulated heads was 0.332 m. The surface water model was developed with an
objective to optimize the annual net returns over the whole tract. The constraints on the water use,
land allocation, surface and groundwater availability as well as hydraulic heads were considered. Net
irrigation requirement at 95,85 and 75 per cent probability levels using two parameter Gamma
distribution; water application to crop at 25, 50, 75, and 100 per cent of net irrigation requirements at
each probability level were used for optimization modeling.
|