Land Resource Inventory of GunjanurSub-watershed for Watershed Planning and DevelopmentYadgir Taluk, Yadgir District, Karnataka (AESR 6.2) ; Not Available
Not Available ; Theaverageannualrainfallof887mmintheGunjanursub-watershedasrecordedfromtheKonkalastationdatabyKSNDMC. 75%,14%and11%oftheannualrainfalloccursduringkharif,rabiandsummerseasonsrespectivelyandexhibitedahighertemporalvariability. Theevapotranspirationestimationtooldevelopedindicatesthatthewatershedwaterbalanceisindeficit.Thecropping&irrigationchoicesarenotappropriateandneedtobealteredtoshiftthedeficitwaterbalance. Theestimatedrunoffavailabletouseis23mmforanaverageannualrainfallof790mm(2009-2017).Theutilizablegroundwateris49.7mm(70%of71mmrechargeestimated).Thismeansthetotalavailablewaterresourcecombiningthesoilmoisturestoreforkharif&rabi(198mm)andutilizablerunoffplusrechargeis271(=198+23+50) Theaverageactualevapotranspirationestimatedinthewatershedbasedonthecurrentlanduseandirrigationpracticesforthekharifandrabiseasonsis514mm.Hencetheamountofwateruseforkharifandrabiseasonsmaybeestimatedas642mm(i.e125%ofAET).Thisdemandforthetwoseasonsishigherby371mm,i.e.(642-271).TheAETinJune-Septmonthsisonly53%ofrainfall.Hence,thereisagoodopportunitytoharvesttheexcesswaterthroughwatershedmanagementpracticesforutilizingduringrabiseason. ThegroundwaterlevelwasfoundfromthedataobtainedfromKSNDMCfortheneareststationNandepalli.Deepestlevelswerefoundin2015. ; Watershed Development Department, Government of Karnataka (World Bank Funded) Sujala –III Project.