Baron, HE and Keller, VDJ and Horan, R and MacAllister, DJ and Simpson, M and Jackson, CR and Houghton-Carr, HA and Rickards, N and Garg, KK and Sekhar, M and MacDonald, A and Rees, G (2023) Improving the representation of groundwater processes in a large-scale water resources model. In: Hydrological Sciences Journal .
Full text not available from this repository.Abstract
This study explores whether incorporating a more sophisticated representation of groundwater, and human–groundwater interactions, improves predictive capability in a large-scale water resource model. The Global Water Availability Assessment model (GWAVA) is developed to include a simple layered aquifer and associated fluxes (GWAVA-GW), and applied to the Cauvery River basin in India, a large, human-impacted basin with a high dependence on groundwater. GWAVA-GW shows good predictive skill for streamflow upstream of the Mettur dam: Kling-Gupta efficiency ≥ 0.3 for 91% of sub-catchments, and improved model skill for streamflow prediction compared to GWAVA over the majority of the basin. GWAVA-GW shows some level of predictive skill for groundwater levels over seasonal and long-term time scales, with a tendency to overestimate depth to groundwater in areas with high levels of groundwater pumping. Overall, GWAVA-GW is a useful tool when assessing water resources at a basin scale, especially in areas that rely on groundwater.
| Item Type: | Journal Article |
|---|---|
| Publication: | Hydrological Sciences Journal |
| Publisher: | Taylor and Francis Ltd. |
| Additional Information: | The copyright for this article belongs to the Taylor and Francis Ltd. |
| Keywords: | Cauvery River; groundwater; India; integrated water resource model. |
| Department/Centre: | Division of Mechanical Sciences > Civil Engineering |
| Date Deposited: | 15 Jul 2023 07:11 |
| Last Modified: | 15 Jul 2023 07:11 |
| URI: | https://eprints.iisc.ac.in/id/eprint/82481 |
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