Characterization and evaluation of hydrological processes responsible for spatiotemporal variation of surface water quality at Narmada estuarine region in Gujarat, India

Singh, Sudhir Kumar; Kumar, Pankaj; Basil, George; Kumar, Rita N.; Kharrazi, Ali; Avtar, Ram

doi:10.1007/s13201-014-0187-5

Cited by 11 publications

(5 citation statements)

References 17 publications

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“…The flow of sediments is governed by many factors such as precipitation, water and soil conservation projects, construction of reservoirs, carbonate weathering, dilution, etc. ( Kumar et al, 2015 ; Liu et al, 2019 ). The upstream of Sabarmati experienced precipitation in early May 2020 ( TOI, 2020 ) and that can be the possible source of high SPM concentrations on May 5, 2020.…”

Section: Resultsmentioning

confidence: 99%

COVID-19 and its impact on environment: Improved pollution levels during the lockdown period – A case from Ahmedabad, India

Aman

Salman

Yunus

2020

Remote Sensing Applications: Society and Environment

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The novel Coronavirus pandemic (COVID-19) hit the world severely in the first half of 2020 which forced several nations to impose severe restrictions on all sorts of activities involving human population. People were mainly advised to remain home quarantined to curb the virus spread. Industrial and vehicular movements were ceased as a result of lockdown, and therefore the rate of pollutants entering the ecosystem was also reduced in many places. Water and air pollution remained a major concern in the last few decades as these were gradually deteriorating in many spheres including the hydrosphere and atmosphere. As the nation-wide lockdown period in India completed more than two months, this study attempted to analyze the impact of lockdown on water and air quality to understand the short-term environmental changes. Using remote sensing data, this study demonstrated the improvements in ambient water quality in terms of decreased turbidity levels for a section of the Sabarmati River in the Ahmedabad region of India. The Suspended Particulate Matter (SPM) concentrations are evaluated to underline the turbidity levels in the study area before and during the lockdown period using the Landsat 8 OLI images. We noticed that the average SPM has significantly decreased by about 36.48% when compared with the pre-lockdown period; and a drop of 16.79% was observed from the previous year's average SPM. Overall, the average SPM concentration during the lockdown period (8.08 mg/l), was the lowest when compared with pre-lockdown average and long-term (2015–2019) April month average. The atmospheric pollution level (NO 2 , PM 2.5 , and PM 10 ) data obtained from the Central Pollution Control Board for Ahmedabad city also shows a significant improvement during the study period, implying a positive response of COVID-19 imposed lockdown on the environmental fronts.

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Section: Resultsmentioning

confidence: 99%

COVID-19 and its impact on environment: Improved pollution levels during the lockdown period – A case from Ahmedabad, India

Aman

Salman

Yunus

2020

Remote Sensing Applications: Society and Environment

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“…The amount of phosphorus in phosphate also varied significantly from the pre-monsoon to the post-monsoon, whereas p<0.05. High concentrations are visible during the monsoon as a result of increased salinity, regeneration, and phosphate release from the bottom into the aquatic pole due to turbulence and mixing processes (Kumar et al, 2015). In the Chattogram coastal area, the concentration of phosphate phosphorus varied between 0.221 µg/l and 0.844µg/l.…”

Section: Seasonal Variation In Nutrient Characteristicsmentioning

confidence: 99%

Fluctuations of Physicochemical Parameters in the Waters of the Chattogram Coastal Area, Bangladesh

RAHMAN,

PANDIT,

BEGUM

et al. 2023

Marine Science and Technology Bulletin

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Fluctuations in seasonal features of physicochemical factors in the coastal zone are expressively related to the development of aquaculture. The research examined some common physicochemical characteristics of water such as temperature, salinity, light penetration, pH, biological oxygen demand (BOD), dissolved oxygen (DO), total dissolved solids (TDS), total suspended solids (TSS), and nutrients like nitrite and phosphate for the Chattogram coast of the Bay of Bengal, Bangladesh, for a period about one year (December 2020 to November 2021) during the pre-monsoon, monsoon, and post-monsoon seasons. The analyzed physic-chemical parameters’ spatio-temporal variability was discovered to be as follows: average temperature 28.20±2.28°C, light penetration 9.95±1.75 cm, pH 7.38±0.17, salinity 20.11±1.44 ppt, DO 7.41±0.91 mg/l, BOD5 8.28±1.15 mg/l, TSS 2.61±0.43 g/l, and TDS 21.99±2.06 g/l. The concentration of nutrients indicates significant variations, and their levels in the water increased during the monsoon period. Total nitrate-nitrogen ranged between 0.867 µg/l and 1.472 µg/l and total phosphate-phosphorus ranged between 0.221 µg/l and 0.844 µg/l. Shipbreaking activities near the study area possess adverse impacts on native geomorphology, freshwater inputs, rainfall, and the aquatic ecosystem as well. This research proposes the value of regular supervision to assess the status of water quality and the next prospect of aquaculture in the Chattogram coastal area. Seasonally, without DO, all values showed a significant difference, whereas p<0.05.

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“…Nowadays, the literature on water quality from inland rivers and coastaline areas can be obtained easily, however there are very few reports on information of sea Voyage Rivers because of their complex ecosystem and diverse pollution resources. Literature on some of the spatio-temporal assessment of estuarine ecosystems includes Motru river estuary, Romania [16]; Estuarine systems from South Africa [7]; Estuary of Duliujian river, China [4]; Scheldt estuary, Belgium and Netherlands [3]; Zhangweinan river basin, china [10]; Ying river basin, china [12]; Tapi etsury, west coast of India [11]; Narmada estuary, Gujarat, India [18]; Bay of Bengal, India [19].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Water Quality with Special Reference to Hydrochemistry: A Case Study of Auranga Estuary, Valsad, Gujarat, India

Patel¹,

Sahoo²

2022

Water Conservation - Inevitable Strategy

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An assessment of Water Quality from Auranga estuary (20°63’ N and 72°820 E) was carried out from January 2019 to December 2019. The hydro-chemical variables were analyzed for the evaluation of water quality showed fluctuation in the estuarine water seasonally. The water quality index was computed for the evaluation of water quality of Auranga estuary; to know the pollution level of water body Index for Pollution was also computed. The water quality index (WQI) was 115.97 at downstream and 85.30 at upstream that indicate poor and good water quality respectively. The Pollution Index (PI) ranges from 1.41 (Downstream) to 0.78 (Upstream) which indicate that the water is medium polluted and slightly polluted respectively. Seasonal assessment showed the discrete water quality index and pollution index based on three different seasons; during winter season WQI was 143.30 and 108.05 and PI was 1.41 and 0.97 at downstream and upstream respectively, during summer WQI was 126.73 and 106.95 and PI was 1.18 and 0.94 at downstream and upstream sites respectively and during monsoon WQI was 97.67 and 88.11 and PI was 0.88 and 0.78 at downstream and upstream sites respectively. Univariate statistical technique is attempted to explain the correlations between the variables.

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Characterization and evaluation of hydrological processes responsible for spatiotemporal variation of surface water quality at Narmada estuarine region in Gujarat, India

Cited by 11 publications

References 17 publications

COVID-19 and its impact on environment: Improved pollution levels during the lockdown period – A case from Ahmedabad, India

COVID-19 and its impact on environment: Improved pollution levels during the lockdown period – A case from Ahmedabad, India

Fluctuations of Physicochemical Parameters in the Waters of the Chattogram Coastal Area, Bangladesh

Assessment of Water Quality with Special Reference to Hydrochemistry: A Case Study of Auranga Estuary, Valsad, Gujarat, India

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