Report

Land Resource and Hydrological Inventory of GinigeraSub-watershed for Watershed Planning and Development Koppal Taluk, Koppal District, Karnataka (AESR 3.0)

author(s) RajendraHegde - K.V.Niranjana - S.Srinivas - B.A.Dhanorkar - 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,K.V.Niranjana,S.Srinivas,B.A.Dhanorkar,R.S.ReddyandS.K.Singh(2019).“LandResourceandHydrologicalInventoryofGinigeraSub-watershed(SWs)forWatershedPlanningandDevelopment,KoppalTaluk,KoppalDistrict,Karnataka”,SujalaSWs-LRIAtlasNo.4,ICAR–NBSS&LUP,RC,Bangalore.p.69

Publications and datasets provided via GARDIAN

Abstract

Theaverageannualrainfallof631mmintheGinigerasub-watershedasrecordedfromtheKoppalstationdatabyKSNDMC. 65%,20%and15%oftheannualrainfalloccursduringkharif,rabiandSummerseasonsrespectivelyandexhibitedahighertemporalvariability. Theevapotranspirationestimationtooldevelopedindicatesthatthewatershedwaterbalanceissustainable.Thecropping&irrigationchoicesareappropriateandneednotbealtered. Theestimatedrunoffavailabletouseis58mmforanaverageannualrainfallof596mm(2009-2017).Theutilizablegroundwateris31mm(70%of44mmrechargeestimated).Thismeansthetotalavailablewaterresourcecombiningthesoilmoisturestoreforkharif&rabi(173mm)andutilizablerunoffplusrechargeis262(=173+31+58) Theaverageactualevapotranspirationestimatedinthewatershedbasedonthecurrentlanduseandirrigationpracticesforthekharifandrabiseasonsis517mm.Hencetheamountofwateruseforkharifandrabiseasonsmaybeestimatedas646mm(i.e125%ofAET).Thisdemandforthetwoseasonsishigherby384mm,i.e.(646-262).TheAETinJune-Septmonthsis74%ofrainfall.Hence,thereisaslightlylessopportunitytoharvesttheexcesswaterthroughwatershedmanagementpracticesforutilizingduringrabiseason. ThetotalnumberofwellspresentinGinigeraSub-watershedasperLRIdataare204(Borewells).ThegroundwaterlevelwasfoundfromthedataobtainedfromKSNDMCfortheneareststationHireshindhogi.Deepestlevelswerefoundin2009

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