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

Kumar, Rohini; Musuuza, Jude L.; Van Loon, Anne F.; Teuling, Adriaan J.; Barthel, Roland; Ten Broek, Jurriaan; Mai, Juliane; Samaniego, Luis; Attinger, Sabine

doi:10.5194/hess-20-1117-2016

Articles | Volume 20, issue 3

https://doi.org/10.5194/hess-20-1117-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

HYPER Droughts (HYdrological Precipitation – Evaporation...

https://doi.org/10.5194/hess-20-1117-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 20, issue 3

Research article

|

15 Mar 2016

Research article |

| 15 Mar 2016

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

Rohini Kumar, Jude L. Musuuza, Anne F. Van Loon, Adriaan J. Teuling, Roland Barthel, Jurriaan Ten Broek, Juliane Mai, Luis Samaniego, and Sabine Attinger

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Oct 2016	40	7	7	54
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Mar 2017	40	23	3	66
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May 2017	41	24	4	69
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Jul 2017	34	13	2	49
Aug 2017	26	24	2	52
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Oct 2017	12	18	1	31
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Jul 2018	30	34	4	68
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Apr 2019	33	31	0	64
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Cumulative views and downloads (calculated since 05 Aug 2015)

Month	HTML	PDF	XML	Total
Aug 2015	163	189	3	355
Sep 2015	53	61	3	117
Oct 2015	37	46	1	84
Nov 2015	36	38	3	77
Dec 2015	11	25	1	37
Jan 2016	20	12	0	32
Feb 2016	31	22	3	56
Mar 2016	265	91	10	366
Apr 2016	82	42	0	124
May 2016	33	18	0	51
Jun 2016	20	15	0	35
Jul 2016	17	17	2	36
Aug 2016	23	18	4	45
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Oct 2016	40	7	7	54
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Nov 2023	69	21	1	91
Dec 2023	55	24	0	79
Jan 2024	35	25	3	63
Feb 2024	33	14	1	48
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Apr 2024	33	26	4	63
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Jun 2024	52	34	3	89
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Oct 2024	54	14	1	69
Nov 2024	58	12	0	70
Dec 2024	35	33	3	71
Jan 2025	42	20	2	64
Feb 2025	55	12	1	68
Mar 2025	41	19	3	63
Apr 2025	45	25	2	72
May 2025	67	21	0	88
Jun 2025	77	28	0	105
Jul 2025	101	31	3	135
Aug 2025	86	26	2	114
Sep 2025	65	25	2	92
Oct 2025	57	46	1	104
Nov 2025	58	38	4	100
Dec 2025	11	10	1	22

Latest update: 06 Dec 2025

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.