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National Geographer, Vol.L, No.1 + 2 (Jan-June, July-Dec. 2015), Pages 79-94

Geospatial Techniques in Watershed Management

Kavita Mishra
Banaras Hindu University,
Varanasi
 
Abstract
 
A geospatial technology is a term used to describe the range of modern tools contributing to the geographic mapping and analysis of the earth and human societies. In present scenario watershed is the most widely and desirable used spatial unit for resource management in general and land and water resources in particular. Characterization and prioritization of watersheds are essential steps in integrated watershed resources management. These involve management and overlay analysis of related parameters of watershed study such as geology, geomorphology, landuse/landcover, socio-economic conditions etc. Remote sensing in combination with GIS generated these data layers in an efficient way. Present research paper attempts to integrate all resources of Karmanasha watershed for watershed management.
 
Key words: Watershed, Geospatial Technique, Remote Sensing, Prioritization.
 
Introduction
 
WATERSHED management is an integrated technological approach for optimum development of the area/region by utilizing local resources within the natural boundaries of a watershed on a sustainable basis with full participation of the people. For integrated resource development of a region like part of Karmanasha Basin, having varied geomorphologic characteristics, there is a need of action oriented program. Sustainable watershed management is viewed as integrated technological approach within the natural boundaries of a drainage area for optimum development of resources like land, water and plant to meet the basic needs of the people in a sustained manner (Gautam et al. 2004: 220). It is the process of formulating and carrying out a course of action through people’s participation to utilize the resources of a watershed for providing goods and services without causing adverse effect on soil, water and other elements of natural ecosystem. Watershed facilitates a natural unit with readily identifiable boundaries for implementation of various management programs. Remote Sensing (RS) and GIS play a very significant role in watershed management by providing multidate and reliable data/images, techniques of interpretation, analyzing complex datasets and thematic mapping storage of information for future investigation.