GIS based site and structure selection model for groundwater recharge: a hydrogeomorphic approach.
The groundwater in India is facing a critical situation due to over exploitation, reduction in recharge potential by change in land use and land cover and improper planning and management. A groundwater development plan needs a large volume of multidisciplinary data from various sources. A geographic information system (GIS) based hydrogeomorphic approach can provide the appropriate platform for spatial analysis of diverse data sets for decision making in groundwater recharge. The paper presents development of GIS based model to provide more accuracy in identification and suitability analysis for finding out zones and locating suitable sites with suggested structures for artificial recharge. Satellite images were used to prepare the geomorphological and land use maps. For site selection, the items such as slope, surface infiltration, and order of drainage were generated and integrated in GIS using Weighted Index Overlay Analysis and Boolean logics. Similarly for identification of suitable structures, complex matrix was programmed based on local climatic, topographic, hydrogeologic and landuse conditions as per artificial recharge manual of Central Ground Water Board, India. The GIS based algorithm is implemented in a user-friendly way using arc macro language on Arc/Info platform.
Environmental Systems Design and Modelling Division, National Environmental Engineering Research Institute (NEERI), CSIR, Nehru Marg, Nagpur, India - 440 020. r_vijay@neeri.res.in
Ritesh
R
Vijay
R A
RA
Sohony
D040362:Geographic Information Systems; D008962:Models, Theoretical; D014867:Water
D014867:Water