scholarly journals Seasonal Variations and Health Risk Assessment of Trace Elements in Seti River Basin, Gandaki Province, Nepal

2021 ◽  
Author(s):  
Ramesh Raj Pant ◽  
Kiran Bishwakarma ◽  
Jharana Nepal ◽  
Sudip Paudel ◽  
Mohan Bahadur Chand ◽  
...  
Keyword(s):  
Water Quality ◽  
Trace Elements ◽  
River Basin ◽  
Monsoon Season ◽  
Hazard Index ◽  
Health Impacts ◽  
Post Monsoon ◽  
Post Monsoon Season ◽  
Himalayan River ◽  
Dissolved Trace Elements

Abstract To explore the seasonal variability and associated health risks of dissolved trace elements (TEs), a total of 45 water samples (15 samples in each season) were collected from the Seti River Basin during pre-monsoon, monsoon, and post-monsoon seasons. A total of 15 (TEs) were analysed and the results revealed that Arsenic (As), Chromium (Cr), and Nickel (Ni) were primarily controlled by lithogenic sources, whereas, Cadmium (Cd), Cobalt (Co), Cesium (Cs), Cupper (Cu), Manganese (Mn), Lead (Pb), and Zinc (Zn) were derived from both anthropic and geogenic origin. Additionally, the concentration of Zn was markedly high, especially during the post-monsoon season nearby the landfill site, indicating the anthropic signatures. The hazard index and cancer index were found to be < 1.00 and 10− 6-10− 4, respectively indicating minimum health impacts. The water quality index was < 50 throughout the sampling periods, with better water quality during the monsoon. This study could help to formulate the necessary policies for the sustainability of the Himalayan River Basins.

scholarly journals Assessment of Trophic Responses of a Reservoir to Seasonal and Annual Variations in Monsoon

Water ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2117
Author(s):  
Su-mi Kim ◽  
Hyun-su Kim
Keyword(s):  
Water Quality ◽  
Trophic State ◽  
Monsoon Season ◽  
Phytoplankton Growth ◽  
Phosphorus Loading ◽  
Nutrient Concentrations ◽  
Trophic State Index ◽  
Post Monsoon ◽  
Post Monsoon Season ◽  
State Index

The variations in water quality parameters and trophic status of a multipurpose reservoir in response to changing intensity of monsoon rain was investigated by applying a trophic state index deviation (TSID) analysis and an empirical regression model to the data collected in two periods from 2014 to 2017. The reservoir in general maintained mesotrophic conditions, and Carlson’s trophic state index (TSIc) was affected most by TSITP. Nutrient concentrations, particularly phosphorus, did not show strong correlations with precipitation, particularly in the period with weak monsoon, and a significant increase in total phosphorus (TP) was observed in Spring 2015, indicating the possibility of internal phosphorus loading under decreased depth and stability of water body due to a lack of precipitation. TSIChl was higher than TSISD in most data in period 1 when a negligible increase in precipitation was observed in the monsoon season while a significant fraction in period 2 showed the opposite trend. Phytoplankton growth was not limited by nutrient limitation although nutrient ratios (N/P) of most samples were significantly higher than 20, indicating phosphorus-limited condition. TSID and regression analysis indicated that phytoplankton growth was limited by zooplankton grazing in the Spring, and that cell concentrations and community structure in the monsoon and post-monsoon season were controlled by the changing intensity of the monsoon, as evidenced by the positive and negative relationships between community size and cyanobacterial population with the amount of precipitation in the Summer, respectively. The possibility of contribution from internal loading and an increase in cyanobacterial population associated with weak monsoon, in addition to potential for nutrient enrichment in the post-monsoon season, implies a need for the application of more stringent water quality management in the reservoir that can handle all potential scenarios of eutrophication.

scholarly journals Application of Water Quality Index (WQI) For Ground Water Quality Interpretation

2019 ◽  
Vol 8 (12) ◽  
pp. 1862-1866
Keyword(s):  
Water Quality ◽  
Ground Water ◽  
Water Samples ◽  
Water Quality Index ◽  
Quality Index ◽  
Monsoon Season ◽  
Post Monsoon ◽  
Post Monsoon Season ◽  
Almost All ◽  
Physical And Chemical

Water Quality Index (WQI) is a widely used technique in defining the quality of groundwater and finding whether it is advisable for human use. It is utmost necessary steps to understand the physical and chemical parameters defining the water quality for particular period and location using WQI calculation as it gives information in a single value. WQI has been calculated in twenty ground water samples collected from selected sampling stations at Madurai in the pre-monsoon, monsoon and post monsoon seasons. The water quality index values suggested that almost all the ground water samples were above 150, which indicated that they were unfit for drinking and one sample from Vilangudi had WQI less than 100 which indicated the water as poor category for drinking but could be used for irrigation purposes. The groundwater quality is also defined to be little better during post monsoon season in all the samples than during pre-monsoon and monsoon season.

scholarly journals Pre-monsoon and post-monsoon groundwater chemical analysis For Burdwan (West Bengal), India

MAUSAM ◽  
2021 ◽  
Vol 72 (4) ◽  
pp. 859-864
Author(s):  
PRAVAT RABI NASKAR ◽  
SHOBHIT KATIYAR ◽  
SOURISH BONDYOPADHYAY
Keyword(s):  
Water Quality ◽  
Pollution Control ◽  
Physicochemical Parameters ◽  
West Bengal ◽  
Monsoon Season ◽  
Control Board ◽  
Post Monsoon ◽  
Post Monsoon Season ◽  
Central Pollution Control Board

This study has been carried out to find the groundwater quality of Burdwan district of West Bengal during pre-monsoon and post-monsoon. For this, the data of physicochemical parameters have been collected from Central Pollution Control Board (CPCB) website for the pre-monsoon and post-monsoon season for the year 2017. It is found that during the post-monsoon season, the water quality of all the stations falls in the category of excellent, and during the pre-monsoon season, the water quality of most of the stations is good.

Surface Water Quality in the Forest Catchment – A Case Study of Tunga and Bhadra River Stretches, Karnataka

2020 ◽  
pp. 228-235
Author(s):  
Santhosh Kumar T. M1 ◽  
K. L Prakash
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Monsoon Season ◽  
Oxygen Demand ◽  
Surface Water Quality ◽  
Water Quality Assessment ◽  
Quality Parameters ◽  
Total Hardness ◽  
Post Monsoon ◽  
Post Monsoon Season

A need of water quality assessment of the rivers before enters into the human induced habitations play a vital role in maintenance of ecological balance. The surface water samples were randomly collected from the Tunga and Bhadra reservoirs situated in the downstream catchments of Western Ghats with semi-evergreen and mixed deciduous forests during January 2018 to December 2019. The samples were analyzed as per the Standard Methods prescribed for drinking water analysis. Increased trend of pH in Pre-monsoon and decreased trend in post monsoon season was observed and the mean concentrations of pH was ranged between 7.30 and 8.02. Electrical Conductivity values were found to be <143µS/cm and indicated that the water is suitable for irrigation and drinking purposes. The Total Dissolved Solids and Total Hardness values were indicated as soft water as values are <75 mg/L. A significant relation was noticed between Dissolved Oxygen (DO) and Biochemical Oxygen Demand during Post monsoon season. Whereas, no relationship was existing with water quality parameters in Tunga River and Bhadra reservoirs during monsoon (2019) wherein highest floods were received in this season. An insignificant pollution load was observed as the water flows through forest areas and no relationship exists between past mining activities in the Bhadra river catchment, sedimentation of reservoir and water quality. However, it is suggested to control of alterations in land use / land cover, use of fertilizer and pesticides, mono culture plantations and developmental activities to maintain the water quality in the study area to meet the domestic demands in the downstream.

scholarly journals Water Quality Assessment of Groundwater Resources in Nagpur Region (India) Based on WQI

2009 ◽  
Vol 6 (3) ◽  
pp. 905-908 ◽  
Author(s):  
P. N. Rajankar ◽  
S. R. Gulhane ◽  
D. H. Tambekar ◽  
D. S. Ramteke ◽  
S. R. Wate
Keyword(s):  
Water Quality ◽  
Water Quality Index ◽  
Quality Index ◽  
Monsoon Season ◽  
Groundwater Resources ◽  
Winter Season ◽  
Post Monsoon ◽  
Post Monsoon Season ◽  
Dug Wells ◽  
Quality Rating

Water quality index (WQI) has been calculated for different groundwater sourcesi.e. dug wells, bore wells and tube wells at Khaperkheda region, Maharashtra (India). Twenty two different sites were selected in post monsoon, winter and summer season. And water quality index was calculated using water quality index calculator given by National Sanitation Foundation (NSF) information system. The calculated WQI showed fair water quality rating in post monsoon season which then changed to medium in summer and winter seasons for dug wells, but the bore wells and hand pumps showed medium water quality rating in all seasons where the quality was slightly differs in summer and winter season than post monsoon season, so the reasons to import water quality change and measures to be taken up in terms of groundwater quality management are required.

scholarly journals Impact of seasonal variation on water quality of Hindon River: physicochemical and biological analysis

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Ruchi Sharma ◽  
Ajay Kumar ◽  
Neetu Singh ◽  
Kritika Sharma
Keyword(s):  
Water Quality ◽  
River Water ◽  
Nitrate Nitrogen ◽  
Monsoon Season ◽  
Oxygen Demand ◽  
Pollution Index ◽  
Metal Pollution Index ◽  
Post Monsoon ◽  
Post Monsoon Season

AbstractWater is the basic necessity for a living being and detritions in the quality of water led to many harmful impacts. It is important to regulate the water quality to maintain the balance in all the variation of lives. In the present study, the water samples were collected during the pre-monsoon and post-monsoon periods of February 2015–January 2017 from Mohan Nagar barrage, Ghaziabad (Uttar Pradesh, India). The assessment of the seasonal variation of water quality and its impact on the Hindon River water was evaluated by physicochemical and biological analysis. Samples were analyzed for twelve physicochemical parameters such as Dissolved Oxygen (DO), Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Hardness (TH), Nitrate Nitrogen, Phosphates, Sulphates, and Heavy metals (Cadmium (Cd), Lead (Pb) Iron (Fe), Zinc (Zn) and biological parameters such as Total Coliform count (TCC), Fecal Coliform count (FCC) and Standard Plate count (SPC). Besides this, River Metal Pollution Index and Integrated River Metal Pollution Index were also calculated and found above permissible limits (RMPI > 1 and IMPI > 2). The trend of heavy metal load in the Hindon River water was observed to be Fe > Zn > Pb > Cd. Lower recorded values of DO and higher levels of EC, TDS, BOD, COD, TH, Nitrate Nitrogen, and Sulphates indicate high pollution levels in Hindon River water. TCC (MPN/100 ml) in water samples was found 7.4 × 104 in pre-monsoon season and 5.8 × 104 in a post-monsoon season, FCC (MPN/100 ml) were 4.5 × 104 in pre-monsoon and 3.6 × 104 in a post-monsoon season whereas SPC (CFU/ml) were 75 × 104 in pre-monsoon and 62 × 104 in post-monsoon. Analysis of water quality parameters was performed as per Standard Methods (APHA, 1998). The Correlation coefficient matrix has been obtained to validate the interrelationship between different physicochemical parameters. The results of our study show the necessity of regular monitoring of Hindon River water for the integrity of aquatic flora, fauna, and human health.

A Study on Prevalence and Seasonal Distribution of Dengue at a Tertiary Care Centre of North India

Healthline ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 100-107
Author(s):  
Arti Agrawal ◽  
Vikas Kumar ◽  
Sanjeev Kumar ◽  
Neha K Mani
Keyword(s):  
Monsoon Season ◽  
Dengue Infection ◽  
Tertiary Care ◽  
Seasonal Distribution ◽  
North India ◽  
Care Centre ◽  
Tertiary Care Centre ◽  
Post Monsoon ◽  
Post Monsoon Season ◽  
Male Preponderance

Introduction: Dengue virus infection is a major public health issue prevalent in tropical and sub-tropical countries all over the world mostly in urban and semi-urban areas. WHO estimates about 50-100 million dengue infections worldwide every year. The present study is aimed to assess the prevalence and seasonal distribution of dengue disease during three consecutive years from 2016-2018 at a tertiary care centre of North India. Method: This is an observational retrospective study conducted on total 6,481 clinical suspected cases referred from indoor and outdoor departments of Medicine and Pediatrics of one of the medical colleges of Agra during the period from 1st January 2016 to 31st December 2018. Results: The maximum positivity was recorded in the year 2016 (16.66%), followed by 2017 (14.07%) and 2018(13.56%).Our study shows male preponderance with maximum cases in the year 2018 was recorded in the month of October (22.75%) whereas the lowest in the month of May (1.96%). Most of the cases were in the age group 0-30 years with a male preponderance. The outbreak occurred during the months of August to November indicating vector transmission in the monsoon and post-monsoon season. Conclusion: From the analysis, this study reflects that the numbers of dengue cases in 2016 were maximum and outnumbered the dengue cases among three consecutive years from 2016 to 2018. The peak in dengue positivity was observed during September to October. As this disease affects the population in the monsoon and post monsoon months therefore continuous monitoring of dengue infection is important during the post-monsoon season.

scholarly journals Seasonal Nature and Trends of Tropical Cyclone Frequency and Intensity over the North Indian Ocean

2020 ◽  
Vol 15 (3) ◽  
pp. 526-534
Author(s):  
Abhisek Pal ◽  
Soumendu Chatterjee
Keyword(s):  
Time Series ◽  
Tropical Cyclone ◽  
Indian Ocean ◽  
Monsoon Season ◽  
North Indian Ocean ◽  
Post Monsoon ◽  
The North ◽  
Increasing Trend ◽  
Post Monsoon Season ◽  
Cyclone Frequency

Tropical cyclone (TC) genesis over the North Indian Ocean (NIO) region showed significant amount of both spatial and temporal variability.It was observed that the TC genesis was significantly suppressed during the monsoon (June-September) compared to pre-monsoon (March-May) and post-monsoon (October-December) season specifically in terms of severe cyclonic storms (SCS) frequency. The Bay of Bengal (BoB) was characterized by higher TC frequency but lower intensity compared to the Arabian Sea (AS). It was also observed that the TC genesis locations were shifted significantly seasonally.The movement of the TCs also portrayed some significant seasonal differences. The pre-monsoon and post-monsoon season was responsible for generating TCs with higher values of accumulated cyclone energy (ACE) compared to the monsoon. The time series of TC frequency showed a statistically significant decreasing trend whereas the time series of ACE showed astatistically significant increasing trend over the NIO.

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