Comparison of the impact of drought on surface and sub-surface water in the Kaka-Reza basin

Kazemi, Rahim; Porhemmat, Jahangir

doi:10.22077/jwhr.2022.5211.1056

Document Type : Research Paper

Authors

Rahim Kazemi ¹
Jahangir porhemmat ²

¹ Assistant Prof. Soil Conservation and Watershed Management Research Institute, Agricultural Research, Education and Extension Organization, Tehran, Iran

² Prof. Soil Conservation and Watershed Management Research Institute, Agricultural Research, Education and Extension Organization, Tehran, Iran

https://doi.org/10.22077/jwhr.2022.5211.1056

Abstract

Awareness of drought interrelationships and hydrological response of watersheds is a prerequisite for optimal management of surface and groundwater resources. The aim of the present study was to compare the impact of drought on surface and subsurface waters in the Kaka-Reza basin. In this study, after controlling the data, a common period (1982-2017) for hydrometric and rainfall stations was considered. Then the standardized precipitation index (SPI) and the standardized discharge index (SDI) were calculated for the 1-, 3-, 6-, 9-, 18-, 12- and 24-month time steps. The base flow and the corresponding index were calculated by B-Flow Lyne and Hollick recursive digital filter. Then, the standardized base flow index (SBFI) was calculated by adapting the SPI method for the corresponding time steps. Finally, the relationships between SPI, SDI and SBFI were investigated and analyzed using correlation method. The results showed that the greatest effect of drought on groundwater for the 9- and 12-month time step with coefficient of determination 0.87, While the effect of drought on surface water for the corresponding time step has a coefficient of determination of about 0.4.

Keywords

Main Subjects

Optimum use of water

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Water Harvesting Research

Comparison of the impact of drought on surface and sub-surface water in the Kaka-Reza basin

References

References

Volume 4, Issue 2 - Serial Number 6
December 2021
Pages 145-152

Comparison of the impact of drought on surface and sub-surface water in the Kaka-Reza basin

References

References

Volume 4, Issue 2 - Serial Number 6December 2021Pages 145-152

Volume 4, Issue 2 - Serial Number 6
December 2021
Pages 145-152