Effect of Drought on Hashtgerd Plain Groundwater Quantity and Quality Considering Irrigation Use

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NIKBAKHT J.; MORADI O.

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Journal: IRAN-WATER RESOURCES RESEARCH Year:2019 | Volume:14 | Issue:4 Page(s): 120-131

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Information Journal Paper

Title

Effect of Drought on Hashtgerd Plain Groundwater Quantity and Quality Considering Irrigation Use

Author(s)

NIKBAKHT J. | MORADI O. | Issue Writer Certificate

Keywords

DroughtQ2

Standard Precipitation Index (SPI)Q1

Groundwater Resource Index (GRI)Q1

Pearson CorrelationQ1

Willcox DiagramQ1

Langelier Saturation IndexQ1

Abstract

Drought as a natural phenomenon occurs due to shortage of rainfall and increase of temperature over a long-term period. This can affect the quality and quantity of groundwater. In this research, the impact of Drought on groundwater quality was investigated in respect to the irrigation usage from Hashtgerd plain aquifer. First, using Thiessen-polygon method and precipitation values of 6 weather stations in Hashtgerd plain, total average monthly rainfall for a period of 30 years (1985-2015) was calculated. Monthly averages of groundwater levels for a period of 23 years (1991-2014) were calculated using data from 8 observation wells and Thiessen-polygon method. The climatological Drought and the groundwater Drought were evaluated by SPI and GRI, respectively. Based on the results, the longest climatological Drought with durability of 2 years, severity of-2. 73 (SPIsum), density of-1. 365 (SPIavg) and total average monthly rainfall of 157. 70 mm was marked in the water years 1998-1999. The most severe groundwater Drought was in the water years 2010-2014 (4 years durability) with severity of-6. 10 (GRIsum), density of-1. 53 (GRIavg) and groundwater average monthly level of 1180. 26 m. On 12 months period, correlation between groundwater levels and rainfall amounts were significant with time-lag of 11 months. In June of water year 2013-2014 with extreme Drought condition, water quality in 16% of the aquifer area was appropriate for irrigation while in December, the aquifer was totally unsuitable for irrigation in therms of water quality. Based on LSI, in June and December of all studied years, the water quality of 100% of the Hashtgerd plain aquifer area, showed the potential of calcium carbonate sediments formation.

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APA: Copy

NIKBAKHT, J., & MORADI, O.. (2019). Effect of Drought on Hashtgerd Plain Groundwater Quantity and Quality Considering Irrigation Use. IRAN-WATER RESOURCES RESEARCH, 14(4 ), 120-131. SID. https://sid.ir/paper/100095/en

Vancouver: Copy

NIKBAKHT J., MORADI O.. Effect of Drought on Hashtgerd Plain Groundwater Quantity and Quality Considering Irrigation Use. IRAN-WATER RESOURCES RESEARCH[Internet]. 2019;14(4 ):120-131. Available from: https://sid.ir/paper/100095/en

IEEE: Copy

J. NIKBAKHT, and O. MORADI, “Effect of Drought on Hashtgerd Plain Groundwater Quantity and Quality Considering Irrigation Use,” IRAN-WATER RESOURCES RESEARCH, vol. 14, no. 4 , pp. 120–131, 2019, [Online]. Available: https://sid.ir/paper/100095/en

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