Zoning of Drinking Water Quality Using Entropy Method and Its Relationship with the Drought (Case Study: Abdalan Aquifer, Gachsaran)
Journal Title: Journal of Drought and Climate change Research (JDCR) - Year 2023, Vol 1, Issue 4
Abstract
The reduction of water quality in groundwater resources over the last half century has attracted increased amounts of attention from hydrogeologists. Therefore, different methods called quality indicators of ground water have been used to check the quality status of these vital resources. However, the use of expert judgments is one of the weaknesses of these qualitative models. In this research, it has been tried to use the entropy theory to evaluate the quality of ground water and reduce such judgments of taste. Sixteen water well samples were extracted along the Abdalan aquifer for physical and chemical analyses in 18 months. The results of the application of the entropy method showed that chlorine has the highest rate of influence on the quality of underground water in the region and is the main factor in the reduction of water quality. Also, the results of the entropy method showed that sodium and potassium have the most instability and constant changes. The highest entropy weight is related to magnesium and it shows that there are stable and uniform changes in the underground water of the studied area. In general, the results showed that 74% of the groundwater samples in the study area have good quality, 13% have average quality, and the other 13% have poor quality. Also, the inverse relationship between the drought index (SIAP) and the groundwater resources quality index (EWQI) in the 18-month period shows the leaching effect of evaporative formations in the conditions of increased precipitation.
Authors and Affiliations
Akbar Khedri; Taleb Moradinejad; majid Dashti Barmaki; Marzie Eskandari
Keywords
Related Articles
- EP ID EP754897
- DOI https://doi.org/10.22077/jdcr.2023.6366.1023
- Views 48
- Downloads 0
Spatial and Temporal Analysis of Groundwater Level, Flow Direction and Unit Hydrograph of the Kahorestan Plain Aquifer Abstrac
In the ecosystem of dry and semi-dry areas such as Iran, groundwater is considered as the main source of water supply. Currently, excessive exploitation has put these vital resources at risk of destruction. Therefore, in...
Multitemporal Analysis of Drought in Iran: Monitoring and Evaluation of Spatial and Temporal Characteristics Using MODIS Indices
This study identified and described drought using multiple MODIS-based indicators, so the temporal-spatial characteristics of the intensity and frequency of drought in the entire country in the period from 2001 to 2021 u...
Vulnerability Assessment of Groundwater Resources in Qazvin Aquifer with DRASTIC, Modified and Fuzzy Methods
Concept of vulnerability used in order to determine the pollution risk of Qazvin plains aquifer. Vulnerability map of the aquifer was developed by qualitative rating, and then pollution risk map was provided. Results sho...
Application of Copula Functions in Meteorological Drought Analysis in Qaen Area
Drought is one of the most damaging natural events, significantly impacting water resource planning due to its geographical dominance and prolonged duration. This study analyzed drought intensity and duration at Qaen met...
Distribution of Soil Salt and Pollution of Nitrate and Boron of Different Depths Affecting Wheat and Rice Yields in the Khuzestan province
Soil macro- and micro-nutrients can importantly affect wheat and rice tolerance in salt stressed conditions. The objective was to investigate salt distribution and pollution of nitrate and boron, resulted by chemical fer...