Abstract
This paper recommends a revision of watershed development policy in India in relation to the planning of development interventions involving agricultural intensification and rainwater harvesting following biophysical and societal impact studies carried out on two watershed development projects in Karnataka. A need for changes in policy has arisen in response to progressive catchments closure at the basin level and declining volumes of water flowing into village level reservoirs (known locally as tanks). Flow reductions have occurred largely as a result of increased agricultural intensification over the past 10–15 years. Field levelling, field bund construction, soil water conservation measures, farm ponds, the increase in areas under horticulture and forestry and the increased abstraction and use of groundwater for irrigation are all contributing factors to reduced flows. Planning methodologies and approaches, which may have been appropriate 20 years ago for planning water harvesting within watershed development projects, are no longer appropriate today. New planning approaches are required which (1) take account of these changed flow conditions and (2) are also able to take account of externalities, which occur when actions of some affect the livelihoods of others who have no control or influence over such activities and which (3) contribute to the maintenance of agreed minimum downstream flows for environmental and other purposes.
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Notes
The method, called the Soil Conservation Service (SCS) method was developed in the USA and has been adapted to various regions in India, based on soil type. It determines runoff based on a series of curves which are based from gauged flow and rainfall records in India (Tideman, 1998).
Abbreviations
- BIRDS:
-
Bijapur integrated rural development society an NGO for the Inchigeri area
- CLUWRR:
-
Centre for land use and water resources research
- DANIDA:
-
Danish international development agency
- DFID:
-
Department for international development
- EXCLAIM:
-
EXploratory, climate, land, assessment, and impact, management tool
- HYLUC:
-
HYdrological land use change
- JSYS:
-
Jala samvardhane yojana sangha, a World Bank program responsible for implementing the Karnataka community based tank management project
- KAWAD:
-
Karnataka watershed development society
- NGO:
-
Non-governmental organisation
- SCS:
-
Soil conservation service
- SHG:
-
Self-help-group.
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Acknowledgments
The research was funded under the Forestry Research Programme (ZF0176) of the United Kingdom Department for International Development (DFID). The views expressed are not necessarily those of the DFID Forestry Research Programme.
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Calder, I., Gosain, A., Rao, M.S.R.M. et al. Watershed development in India. 1. Biophysical and societal impacts. Environ Dev Sustain 10, 537–557 (2008). https://doi.org/10.1007/s10668-006-9079-7
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DOI: https://doi.org/10.1007/s10668-006-9079-7