Report

Land Resource and Hydrological Inventory of HattikuniSub-watershed for Watershed Planning and Development Yadgir Taluk, Yadgir District, Karnataka (AESR 6.2)

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

RajendraHegde,B.A.Dhanorkar,,S.Srinivas,K.V.Niranjana,R.S.ReddyandS.K.Singh(2019).“LandResourceandHydrologicalInventoryofHattikuniSub-watershedforWatershedPlanningandDevelopment,YadgirTaluk,YadgirDistrict,Karnataka”,SujalaSWs-LRIAtlasNo.26,ICAR–NBSS&LUP,RC,Bangalore.p.57

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Abstract

Theaverageannualrainfallof887mmintheHattikunisub-watershedasrecordedfromtheHattikunistationdata. 80%,12%and8%oftheannualrainfalloccursduringkharif,rabiandsummerseasonsrespectivelyandexhibitedahighertemporalvariability. Theevapotranspirationestimationtooldevelopedindicatesthatthewatershedwaterbalanceisindeficit.Thecropping&irrigationchoicesarenotappropriateandneedtobealteredtoshiftthedeficitwaterbalance. Theestimatedrunoffavailabletouseis33mmforanaverageannualrainfallof830mm(2009-2017).Theutilizablegroundwateris49.7mm(70%of71mmrechargeestimated).Thismeansthetotalavailablewaterresourcecombiningthesoilmoisturestoreforkharif&rabi(232mm)andutilizablerunoffplusrechargeis315(=232+33+50) Theaverageactualevapotranspirationestimatedinthewatershedbasedonthecurrentlanduseandirrigationpracticesforthekharifandrabiseasonsis558mm.Hencetheamountofwateruseforkharifandrabiseasonsmaybeestimatedas697mm(i.e125%ofAET).Thisdemandforthetwoseasonsishigherby382mm,i.e.(697-315).TheAETinJune-Septmonthsisonly50%ofrainfall.Hence,thereisagoodopportunitytoharvesttheexcesswaterthroughwatershedmanagementpracticesforutilizingduringrabiseason. ThetotalnumberofwellspresentinHattikuniSub-watershedasperLRIdatais48Borewells.ThegroundwaterleveldataobtainedfromDept.ofMines&GeologyfortheneareststationAllipur.Thegroundwaterlevelduringtheyears2009-2015wereslightlyvarying,whereasduringtheyear2008and2016werefoundconstant

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