Abstract
India is one of the very few countries in the world endowed with substantial land and water resources. Being a country with predominantly monsoon climate, the rainfall is erratic, unevenly distributed in space, time and hence droughts in some parts/seasons and floods in some other parts/seasons frequently occur. Sometimes, both of them also occur simultaneously. In order to reduce the adverse impacts of floods and droughts, intra-basin surface/subsurface water management followed by inter-basin subsurface & surface water transfer is proposed to ensure water availability within the basin first, followed by transfer of basin excess water, preferably to the adjacent basin (s) within the region -having water storage capability during the regional floods, purely on a short term basis. In the present study, a sub-catchment of Subarnarekha Basin has been considered as the study area. This study focuses on the proposal of Intra-basin/Inter-basin subsurface/surface storage/transfer during a portion of the flood period. This is accomplished after creating some Intra-basin storage, by analyzing 13 years of daily discharge data -starting from 2004, for the Jamsholaghat Gauge-Discharge (G-D) site in the basin. Thus, all the four purposes -in their order of preference, viz., 1) moderation of basin flood peak; 2) creation of intra-basin surface/subsurface storage; 3) groundwater recharge and 4) short term mitigation of water scarcity in the neighboring basin (s), are expected to be achieved through this proposal.
Highlights
On the Earth’s surface, the freshwater availability generally depends on the hydrological cycle
If the technologies such as desalination of sea water are used extensively, it would further increase the availability of freshwater [1]
The proposal for interlinking of rivers (ILR) of India is on the wish list of many stakeholders in order to reduce the negative impacts of droughts in some regions by utilizing the simultaneously prevailing excess flood waters in some other regions
Summary
On the Earth’s surface, the freshwater availability generally depends on the hydrological cycle. If the technologies such as desalination of sea water are used extensively, it would further increase the availability of freshwater [1]. Due to increase in the global population and change in the climate conditions, there will be increases in the demand of freshwater which may lead to shortage of water resources spatially and/or temporally. The proposal for interlinking of rivers (ILR) of India is on the wish list of many stakeholders in order to reduce the negative impacts of droughts in some regions by utilizing the simultaneously prevailing excess flood waters in some other regions
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