Agriculture Reference
In-Depth Information
Improving water distribution and on-farm efficiencies through participation of
beneficiaries
improved designs and O&M of structures, agricultural practices, waste water
treatment technologies, etc.
The need to adopt a participatory approach in regard to the choice of a strategy for flood
control.
The need for exploring the possibilities of 'inland navigation' in and near the delta, and
the need for integrating water needs for navigation (which may be compatible with EFR
and hydropower), and consumptive uses.
Multipurpose reservoirs like Rengali, generating hydropower, play a great role in
maintaining or even improving low season river flows. However, the effects of any
changes in the hydrologic regime, including improvement of flows, on the aquatic
ecology needs to be studied and understood.
There is a need for the integrated management of land and water resources and the
integration of rural livelihoods.
Allocation of available water in the respective basins
The types of studies carried out in respect of both Sabarmati and Brahmani basins in
India yielded good insights on the sectoral allocation of water, and a scenario for each
case is depicted in the text (Figure 2 and Figure 3).
These studies gave an insight into inter-allocation stress, if any, between different
water users; essentially the people sector (both drinking and industrial), food sector
(essentially agriculture) and the nature sector (terrestrial and aquatic ecosystem needs). In
our study, forests were classified as of interest to the nature sector, and the allocations
shown against them are depicted accordingly.
Water stress indicators were also evolved in an independent manner in the process,
essentially in terms of withdrawals of surface water and groundwater (abstractions by
pumping). Return flows were accounted for, which also gave an insight into the impacts
on water quality. Having done this at basin scale, an extrapolation of a preliminary nature
for all the basins was attempted, so as to sequentially order further detailed studies to
investigate the possibility of severe stress, and the scope for inter-basin water diversions
as a solution strategy. These are explained in what follows:
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