1Scientist, National Institute of Hydrology, Central India Hydrology Regional Centre, Bhopal, Madhya Pradesh, India
2Scientist, National Institute of Hydrology, Jal Vigyan Bhawan, Roorkee, Uttarakhand, India
Online Published on 07 February, 2022.
Making decisions on water resources management and planning is a complex task due toinvolvement of multiple social, economic and environmental issues. An appropriate Decision Support System (DSS) tool capable of handling huge temporal and spatial data, equipped with reliable hydrological and statistical models, analyze multi-criteria optimal scenarios and have user-friendly interfaces could be the facilitating tool for decision-makers to address water resourcesrelated issues, solve problem and make appropriate decision. The present paper describes the development of DSS applications in the Shipra river basin of Madhya Pradesh using MIKE BASIN software to support decisions to address the range of water resources problems. The MIKE 11 NAM rainfall-runoff modelwas developed for the Shipra river and used in the MIKE BASIN model for runoff simulation in ungauged sub-catchments. The DSS scenarios have been developed using Mike Basin Model of Shipra basin to study the impact of interventions made in the Shipra river basin such as Khan Diversion, Narmada-Shipra river interlink project and Gambhir water supply project on water availability in the river. The coefficient of determination(R2) values for NAM Rainfall-Runoff model calibration and validation were 0.72 and 0.64, indicating good agreement between the simulated and observed runoff. Scenario analysis of MIKEBASIN results indicated that the Khan diversion, which was executed to avoid entry of contaminated Khan river water into Shipra has reduced the water availability in the Shipra river. However, the simulation results indicated that the water availability in Shipra has been improved due to Narmada-Shipra link, a minimum of 1.7m3/s flow has been found available at Ujjain even during the lean period. Gambhir reservoir DSS scenario was developed to evaluate how demand deficit can be fulfilled through proper reservoir operation during a drought period. The information thus derived from various scenarios generated in MIKE BASIN can be helpful for planners and decision makers to understand prevailing hydrological conditions in the river basin and to prepare plan for optimal utilization of water resources.
NAM RR Model, MIKE BASIN, DSS Scenario, Shipra River, Decision making
