Publication Abstracts

He et al. 2017

He, X., Y. Wada, N. Wanders, and J. Sheffield, 2017: Intensification of hydrological drought in California by human water management. Geophys. Res. Lett., 44, no. 4, 1777-1785, doi:10.1002/2016GL071665.

We analyze the contribution of human water management to the intensification or mitigation of hydrological drought over California using the PCR-GLOBWB hydrological model at 0.5° resolution for the period 1979-2014. We demonstrate that including water management in the modeling framework results in more accurate discharge representation. During the severe 2014 drought, water management alleviated the drought deficit by ∼50% in Southern California through reservoir operation during low-flow periods. However, human water consumption (mostly irrigation) in the Central Valley increased drought duration and deficit by 50% and 50-100%, respectively. Return level analysis indicates that there is more than 50% chance that the probability of occurrence of an extreme 2014 magnitude drought event was at least doubled under the influence of human activities compared to natural variability. This impact is most significant over the San Joaquin Drainage basin with a 50% and 75% likelihood that the return period is more than 3.5 and 1.5 times larger, respectively, because of human activities.

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BibTeX Citation

@article{he09200d,
  author={He, X. and Wada, Y. and Wanders, N. and Sheffield, J.},
  title={Intensification of hydrological drought in California by human water management},
  year={2017},
  journal={Geophysical Research Letters},
  volume={44},
  number={4},
  pages={1777--1785},
  doi={10.1002/2016GL071665},
}

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RIS Citation

TY  - JOUR
ID  - he09200d
AU  - He, X.
AU  - Wada, Y.
AU  - Wanders, N.
AU  - Sheffield, J.
PY  - 2017
TI  - Intensification of hydrological drought in California by human water management
JA  - Geophys. Res. Lett.
JO  - Geophysical Research Letters
VL  - 44
IS  - 4
SP  - 1777
EP  - 1785
DO  - 10.1002/2016GL071665
ER  -

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