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dc.contributor.authorShankar, D.
dc.contributor.authorKotamraju, V.
dc.contributor.authorShetye, S.R.
dc.date.accessioned2006-03-22T10:21:03Z
dc.date.available2006-03-22T10:21:03Z
dc.date.issued2004
dc.identifier.citationCurrent Science, vol.86(4), 543-552p.
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/15
dc.description.abstractWhile issues related to water attract considerable attention in all spheres of life in India, very little quantitative information is available on the water budget of the country. There are primarily two reasons for this lacuna: first, the dearth of information on the variables associated with hydrology, and second, the absence of an easily accessible quantitative framework to put these variables in perspective. In this paper, we discuss a framework that has been assembled to address both these issues. At the core of the framework is a hydrological routing model (HYDRA (Coe, 1998; Coe, 2000)) that has been used to study the water balance of basins on various scales, ranging from a few square kilometres to continents. The basic data needed for implementing the framework are a suitable digital elevation model (DEM) and data on precipitation and evapotranspiration. Available discharge data can be used to validate the performance of the model. We demonstrate the viability of the framework by applying it to the hydrology of the Mandovi river on the western slopes of the Sahyadris; it is typical of the rivers along the Indian west coast. Most of the catchment area of the river is in Goa, but parts of the river also flow through Karnataka and Maharashtra. We use a 30""-resolution (~1 km) DEM (GLOBE Task Team and others, 1999) and HYDRA to show that the model output mimics the observed discharge well, providing indirect validation for the surface runoff and sub-surface drainage values on which no data are available.
dc.description.sponsorshipDepartment of Ocean Development, Department of Science and Technology
dc.format.extent470218 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherIndian Academy of Sciences
dc.rightsCopyright with publisher
dc.subjectHydrology
dc.subjectRiver discharge
dc.subjectModelling
dc.subjectGRASS GIS
dc.subjectHYDRA
dc.subjectGLOBE DEM
dc.titleA quantitative framework for estimating water resources in India
dc.typeJournal Article


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