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Water resourse planning of patan branch canal command area through RS & GIS

Nitin Dubey
M. Tech. (Soil & Water Engg.), CAE, JNKVV, Jabalpur (M.P.), India

R. K. Nema
Associate Prof. (Soil & Water Engg.), CAE, JNKVV, Jabalpur (M.P.), India


Abstract
Integration of remote sensing technology and GIS techniques with resource data provides a reliable and accurate database on water resources, enabling us to arrive at natural resource management solution by adopting a holistic approach. With the above premise, a study was undertaken to prepare different thematic maps for the purpose of generating water resource planning of Patan Branch Canal Command Area. It has geographical area of 84632ha.Methodology adopted for the study involved digitization of available information, use of digitized information for generating the thematic maps, integration of theme maps and finally generation water resource plan as per decision rules. The satellite data of IRS-1C, LISS-III and Survey of India toposheets were used to prepare thematic maps. The ‘Integrated Land and Water Information System’ (ILWIS 2.0) software was employed to generate desired maps and for their interpretation. In all seven thematic maps were generated namely geomorphology, soil, ground water potential, water table fluctuation, depth to water table map, canal water availability and land use map. These maps were integrated. On the basis of the pre-decided decision rules actions to be taken were decided. Smaller areas were merged into a mixed category. An area of 54490 ha which has sufficient water is proposed to be double cropped. An area of 13612 ha has been proposed for single cropped area, looking to less availability of water. The area proposed for agro-horticulture is about 2812 ha. A part of the area is at a slope of 3 to 10% or more comprising 4126 ha. It should be kept under silvipasture. The areas falling under wasteland and where the water availability for irrigation was very poor; were reserved for future extension of settlement areas. The water bodies in the area of 346 ha are proposed to be used as water resources. Also around 5150 ha area belonging to wasteland on structural hills and structural plain is proposed to be utilized for harvesting rainwater. Extensive ground truth information was gathered and utilized for preparing the thematic maps and for preparing decision rules which forms the base of proposed action plan. The action plan proposed may be useful for planner on command area basis.