Report

Land Resource Inventory of Khairat Sub-watershed for Watershed Planning and Development, Aland Taluk, Kalaburagi District, Karnataka (AESR 6.2)

author(s) RajendraHegde - B.A.Dhanorkar - S.Srinivas - K.M.Nair - K.V.Niranjana - R.S.ReddyandS.K.Singh
from Indian Council of Agricultural Research (ICAR)
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themes
regions
  • Northern Europe
  • Europe
  • World
  • Southern Asia
  • Asia
citation

RajendraHegde,B.A.Dhanorkar,S.Srinivas,K.M.Nair,K.V.Niranjana,R.S.ReddyandS.K.Singh(2016).“LandResourceandHydrologicalInventoryofKhairatSub-watershedforWatershedPlanningandDevelopment,AlandTaluk,KalaburagiDistrict,Karnataka”,SujalaSWs-LRIAtlasNo.76,ICAR–NBSS&LUP,RC,Bangalore.p.42

Publications and datasets provided via GARDIAN

Abstract

Theaverageannualrainfallof772mmintheKhairatsub-watershedasrecordedfromtheAlandstationdatabyKSNDMC. 77%,12%and11%oftheannualrainfalloccursduringkharif,rabiandsummerseasonsrespectivelyandexhibitedahighertemporalvariability. Theevapotranspirationestimationtooldevelopedindicatesthatthewatershedwaterbalanceisinsustainablelimit. Theestimatedrunoffavailabletouseis1mmforanaverageannualrainfallof776mm(2009-2017).Theutilizablegroundwateris38mm(70%of54mmrechargeestimated).Thismeansthetotalavailablewaterresourcecombiningthesoilmoisturestoreforkharif&rabi(167mm)andutilizablerunoffplusrechargeis206(=167+38+1) Theaverageactualevapotranspirationestimatedinthewatershedbasedonthecurrentlanduseandirrigationpracticesforthekharifandrabiseasonsis505mm.Hencetheamountofwateruseforkharifandrabiseasonsmaybeestimatedas631mm(i.e125%ofAET).Thisdemandforthetwoseasonsishigherby425mm,i.e.(631-206).TheAETinJune-Septmonthsis53%ofrainfall.Hence,thereisagoodopportunitytoharvesttheexcesswaterthroughwatershedmanagementpracticesforutilizingduringrabiseason. ThetotalnumberofwellspresentinKhairatSub-watershedasperLRIdatais76(43-Borewellsand33-Openwells).ThegroundwaterlevelwasfoundfromthedataobtainedfromKSNDMCfortheneareststationSavaleshwar.Deepestlevelswerefoundin2010

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