Articles | Volume 20, issue 3
Hydrol. Earth Syst. Sci., 20, 1117–1131, 2016
https://doi.org/10.5194/hess-20-1117-2016

Special issue: HYPER Droughts (HYdrological Precipitation – Evaporation...

Hydrol. Earth Syst. Sci., 20, 1117–1131, 2016
https://doi.org/10.5194/hess-20-1117-2016

Research article 15 Mar 2016

Research article | 15 Mar 2016

Multiscale evaluation of the Standardized Precipitation Index as a groundwater drought indicator

Rohini Kumar et al.

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (11 Nov 2015) by Gregor Laaha
AR by Rohini Kumar on behalf of the Authors (04 Feb 2016)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (15 Feb 2016) by Gregor Laaha
RR by Sergio Martín Vicente Serrano (15 Feb 2016)
ED: Publish as is (01 Mar 2016) by Gregor Laaha
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Short summary
In a maiden attempt, we performed a multiscale evaluation of the widely used SPI to characterize local- and regional-scale groundwater (GW) droughts using observations at 2040 groundwater wells in Germany and the Netherlands. From this data-based exploratory analysis, we provide sufficient evidence regarding the inability of the SPI to characterize GW drought events, and stress the need for more GW observations and accounting for regional hydrogeological characteristics in GW drought monitoring.