Modeling the potential for floodwater recharge to offset groundwater depletion: a case study from the Ramganga basin, India

Vista sencilla de ítem
dc.creatorChinnasamy, Pennan
dc.creatorMuthuwatta, Lal P.
dc.creatorEriyagama, Nishadi
dc.creatorPavelic, Paul
dc.creatorLagudu, S.
dc.date2018-06
dc.date2018-03-07T10:16:35Z
dc.date2018-03-07T10:16:35Z
dc.date.accessioned2026-06-27T18:26:44Z
dc.descriptionThe Ganges basin faces considerable spatial and temporal imbalance between water demand and availability. Lack of water storage infrastructure has led to this mismatch, wherein there are limited options to store flood water during the wet season and limited groundwater and surface water resources during the dry season. In this current study, a semi-coupled hydrological modeling framework is used to test scenarios that can help bridge this imbalance. A hydrological model (SWAT), groundwater model (MODFLOW) and flood inundation model (HEC-RAS) were applied to the Ramganga basin in India (*19,000 km2) to understand the baseline hydrologic regime and to test scenarios with distributed managed aquifer recharge (MAR) interventions, which when applied to at the basin scale to co-address flooding and groundwater depletion has come to be known as Underground Taming of Floods for Irrigation. The scenarios with MAR, which used available basin runoff to recharge groundwater, yielded favorable results in flood reduction and groundwater level improvement throughout the sub-basin. Groundwater levels improved within 5 years of introducing MAR, resulting in a groundwater elevation increase of up to 7 mwhen compared to baseline conditions. The HEC-RAS model indicated that a 20% reduction in basin outflow converted a 15-year flood peak to an 8-year flood peak, a 5-year peak to 3 years and a 2-year peak to 1 year. In addition, this resulted in a 10% reduction in the inundated area in all return periods tested. Therefore, distributed MAR practices can be effective in reducing the negative impacts from larger return period floods and increasing the groundwater levels.
dc.identifierhttps://hdl.handle.net/10568/91318
dc.identifier.urihttp://hdl.handle.net/123456789/156076
dc.languageen
dc.publisherSpringer
dc.rightsOpen Access
dc.sourceChinnasamy, Pennan;Muthuwatta, Lal; Eriyagama, Nishadi; Pavelic, Paul; Lagudu, S. 2017. Modeling the potential for floodwater recharge to offset groundwater depletion: a case study from the Ramganga basin, India. Sustainable Water Resources Management. 14p. (Online first).. . 10.1007/s40899-017-0168-6
dc.subjectflooding
dc.subjectflood irrigation
dc.subjectmodels
dc.subjectgroundwater depletion
dc.subjectwater demand
dc.subjectwater availability
dc.subjectwater storage
dc.subjectwater resources
dc.subjectwater levels
dc.subjectriver basins
dc.subjectwet season
dc.subjectdry season
dc.subjectsurface water
dc.subjectaquifers
dc.subjecthydrological factors
dc.subjectsoil water
dc.subjectcalibration
dc.subjectcase studies
dc.titleModeling the potential for floodwater recharge to offset groundwater depletion: a case study from the Ramganga basin, India
dc.typeJournal Article

Archivos

Colecciones

Instituto Internacional para el Manejo del Agua (IWMI)