Water-quality of Lake Conroe on the west fork San Jacinto River, southeastern Texas

1985 ◽  
Keyword(s):  
Water Quality ◽  
The West ◽  
West Fork

Water quality simulation of sewage impacts on the west coast of Mumbai, India

2010 ◽  
Vol 62 (2) ◽  
pp. 279-287 ◽  
Author(s):  
R. Vijay ◽  
P. J. Khobragade ◽  
R. A. Sohony
Keyword(s):  
Water Quality ◽  
West Coast ◽  
Current Data ◽  
The West ◽  
Water Quality Simulation ◽  
Hydrodynamic Behaviour ◽  
Treated Effluent ◽  
Treatment Facilities ◽  
The Impact

Most coastal cities use the ocean as a site of waste disposal where pollutant loading degrades the quality of coastal waters. Presently, the west coast of Mumbai receives partially treated effluent from wastewater treatment facilities through ocean outfalls and discharges into creeks as well as wastewater/sewage from various open drains and nallahs which affect the water quality of creek and coastal water. Therefore, the objective of this paper is to simulate and assess the hydrodynamic behaviour and water quality due to impact of sewage and wastewater discharges from the west coast of Mumbai. Hydrodynamics and water quality were simulated based on present conditions and validated by using measured tide, current data and observed DO, BOD and FC. Observed and simulated results indicated non compliance to standards in Malad, Mahim creeks and the impact zones of ocean outfalls. The developed model could be used for generating various conditions of hydrodynamics and water quality considering the improvement in wastewater collection systems, treatment levels and proper disposal for proper planning and management of creeks and coastal environment.

Water Quality Assessment and Nitrogen Pollution Sources Analysis of the West Lake, Hangzhou, China

2014 ◽  
Vol 1073-1076 ◽  
pp. 504-509 ◽  
Author(s):  
Zan Fang Jin ◽  
Xue Qin ◽  
Ling Xiao Chen ◽  
Fei Li Li
Keyword(s):  
Water Quality ◽  
Water Quality Assessment ◽  
Lake Basin ◽  
The West ◽  
Temporal And Spatial Variation ◽  
Nitrate Sources ◽  
West Lake ◽  
Pollution Factor ◽  
Temporal And Spatial

Single factor water quality identification index (SFWQII) and Comprehensive water quality identification index (CWQII) were applied to the data of 6 parameters for water quality of West Lake at 10 different sites and 4 main inflows in the West Lake basin, generated during March 2012 to February 2013. This study evaluated and elucidated the temporal and spatial variation of each parameter on water quality and the main pollution factor of West Lake by SFQII. CWQII based on the SFQII was applied to evaluate the eutrophication level of West Lake and substantiated mesotrophic waters. Stable isotopes of nitrate were used to identify the nitrate sources of West Lake. The δ15NNO3 values in samples from the West Lake and inflows had a range of 2.6‰ to 12.0‰, while the δ15NNO3 values in Qiantang River was 5.3‰, in rainfall was 5.2‰ and in runoff was 3.6‰, respectively. Animal wastes, commercial fertilizer and domestic sewage were the main nitrate sources. The groundwater and denitrification might increase the levels of NO3- in West Lake.

scholarly journals Macroinvetebrate Assemblages as Indicators of Water Quality of the West Seti River, Bajhang, Nepal

2017 ◽  
Vol 6 (3) ◽  
pp. 25-45
Author(s):  
Mohana Matangulu ◽  
Smriti Gurung ◽  
Meera Prajapati ◽  
Rabindra Jyakhwo
Keyword(s):  
Water Quality ◽  
Assessment Tool ◽  
Ph Value ◽  
Average Score ◽  
The West ◽  
Chi Square ◽  
Macroinvertebrate Assemblages ◽  
Physico Chemical ◽  
Chi Square Test

Water quality of the West Seti River, a tributary of the Karnali in West Nepal was assessed using macroinvertebrates as bioindicators. The main objective of the study was to assess the ecological water quality of the West Seti River and to generate a baseline data on macroinvertebrate assemblages. The sampling was conducted during December 2015 and a total of 11 sampling sites were selected from the West Seti River and its tributaries. Qualitative samples of macroinvertebrates were collected from different habitats. Selected physico-chemical parameters such as pH and temperature were estimated on-site. Dissolved oxygen (DO) was estimated by Winkler’s method. The macroinvertebrate samples were enumerated and identified up to Family level following standard literature. Chi-square test was performed to see whether macroinvertebrate taxa varied significantly along the altitudinal gradient and between the West Seti River and its tributaries. An ecological assessment tool Nepalese Biotic Score/ Average Score Per Taxon (NEPBIOS/ASPT) was applied to assess the water quality of the sampling sites. The pH value ranged from 7.9 to 8.7 indicating the alkaline nature of the river. A total of 1666 individuals belonging to 34 Families and 7 Orders of macro-invertebrates were observed. The highest diversity of the macroinvertebrate taxa was observed at site T5 with nineteen Families whereas the lowest taxa diversity was observed at R3 with only five Families. The variation in macroinvertebrate assemblages between the sub-tropical and temperate zones; and the West Seti River and its tributaries were not significant. NEPBIOS/ASPT revealed a score of Water Quality Class of III-IV at Site R3 indicating that the site was polluted. This site was characterized by the abundance of red Chironomids which are considered as the indicators of organic pollution.International Journal of EnvironmentVolume-6, Issue-3, Jun-Aug 2017, page: 25-45

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