Volume & Issue no: Volume 5, Issue 3, May - June 2016
____________________________________________________________________________________________________
Title: |
Irrigation Schedule Models For The Management Of Surface And Groundwater Resources In Erode District Tamilnadu |
Author Name: |
T.Subramani, R.Kumar |
Abstract: |
ABSTRACT
The irrigated agriculture in the Erode region of
Tamilnadu is characterized by huge water withdrawals
from the Cauvery River. The vast infrastructure built for
extensive irrigation, together with inappropriate
drainage infrastructure, leads to a build-up of very
shallow groundwater (GW) levels, followed by
waterlogging and salt accumulation in the soil profile.
Previous studies revealed deficits in the management
and maintenance institutions, inappropriate and
inflexible irrigation strategies, poor linkages between
field level demands, and in the operation of the network.
No flexible water management tool is currently in use
that, by pre-conceiving mitigation strategies, would aim
at reducing the current yield reductions. This study
aimed to develop and introduce such a tool at the
irrigation scheme level, illustrated at the example of the
Water Users Association (WUA) in Erode (about 2,000
ha of farmland). The tool can support managerial
decisions on optimization of water use, particularly
under the deficiatary water supply predicted under
climate change. Remote Sensing (RS) techniques were
used in combination with real-time hydrological
measurements (e.g., ponding experiments to estimate
losses in canals) to assess the operational performance
of the WUA. Delivery performance ratio (DPR), relative
evapotranspiration (RET), depleted fraction (DF),
drainage ratio (DR), overall consumed ratio (OCR), field
application ratio (FAR) and conveyance ratio (CR) were
used as performance indicators. Using the current and
target values for FAR and CR, three improved irrigation
efficiency scenarios were .Recharge to the aquifer was
determined for these scenarios by the water balance
approach. Spatial dynamics of GW levels and soil
characteristics (factors that affect recharge) were
represented by dividing the WUA into ‘hydrological
response units’.
Keywords: Irrigation Schedule Models, Surface,
Groundwater Resources, Erode District, Tamilnadu |
Cite this article: |
T.Subramani, R.Kumar , "
Irrigation Schedule Models For The Management Of Surface And Groundwater Resources In Erode District Tamilnadu" , International Journal of Emerging Trends & Technology in Computer Science (IJETTCS) ,
Volume 5, Issue 3, May - June 2016 , pp.
104-113 , ISSN 2278-6856.
|
| Full Text [PDF] Back to Current Issue | |
NOTE: Authors note that paper cannot be withdrawn at any condition once it is accepted. The Team of IJETTCS advise you, do not submit same article to the multiple journals simultaneously. This may create a problem for you. Please wait for review report which will take maximum 01 to 02 week.