scholarly journals Water quality of the Potomac River estuary at Washington, D.C.

Circular ◽  
1966 ◽  
Author(s):  
W.H. Durum ◽  
Walter Basil Langbein
Keyword(s):  
Water Quality ◽  
River Estuary ◽  
Potomac River

From Headwaters to Coast: Influence of Human Activities on Water Quality of the Potomac River Estuary

2014 ◽  
Vol 20 (2-3) ◽  
pp. 291-323 ◽  
Author(s):  
Suzanne B. Bricker ◽  
Karen C. Rice ◽  
Owen P. Bricker
Keyword(s):  
Water Quality ◽  
Human Activities ◽  
River Estuary ◽  
Potomac River

The fate of storm water and stormwater pollution in the Parramatta estuary, Sydney

1977 ◽  
Vol 28 (1) ◽  
pp. 67 ◽  
Author(s):  
E Wolanski
Keyword(s):  
Water Quality ◽  
Simple Model ◽  
River Estuary ◽  
Drainage Area ◽  
Rainfall Pattern ◽  
Storm Water ◽  
Stormwater Pollution

The small drainage area of the Parramatta River and the erratic rainfall pattern over Sydney are responsible for strong stratification phenomena in the upper Parramatta River estuary following rainfalls. A simple model is proposed for the fate of storm water and its effects on the water quality of the esturary.

scholarly journals Seasonal effects of wastewater to the water quality of the Caeté river estuary, Brazilian Amazon

2010 ◽  
Vol 82 (2) ◽  
pp. 467-478 ◽  
Author(s):  
Luci C.C. Pereira ◽  
Marcela C. Monteiro ◽  
Danielly O. Guimarães ◽  
Jislene B. Matos ◽  
Rauquírio M. da Costa
Keyword(s):  
Water Quality ◽  
River Estuary ◽  
Field Measurements ◽  
Local Environment ◽  
Local Economy ◽  
Seasonal Effects ◽  
Economic Activities ◽  
Dry Period ◽  
Biological Resources

Bragança's socioeconomic situation is highly dependent on estuarine and marine biological resources that are influenced by tidal cycles and climatology. Field measurements (hydrological, hydrodynamic and microbiological variables) were taken in the most urbanized zone from Caeté estuary to characterise the quality of the local environment. During the dry period, the estuary was more eutrophic and presented the highest temperature (30.5 °C in Oct./06), salinity (17 psu in Feb./07), pH (8.24 in Feb./07) and fecal coliform (> 1000 MPN/100 ml in Dec./06 and Feb./07) values. The phytoplankton Cyclotella meneghiniana, Coscinodiscus centralis and other r-strategist species were observed. The lack of basic hydric canalization was responsible for the local contamination, especially during the dry period when more concentrated wastewater from the city was emitted into the estuary, showing the human influence on the reduction of local estuarine water quality. In Bragança, the fishery is considered one of the main economic activities so, this contamination is worrisome because a large part of the local economy depends on biological resources and, thus, the contamination could negatively affect the environmental health of this Amazon ecosystem.

scholarly journals CONCENTRATION HEAVY METALS (Cu AND Pb) IN MUSI RIVER ESTUARY

2016 ◽  
Vol 7 (2) ◽  
Author(s):  
Wike Ayu Eka Putri ◽  
Dietriech G. Bengen ◽  
Etty Riani
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Heavy Metal ◽  
River Estuary ◽  
Heavy Metal Concentration ◽  
Test Analysis ◽  
Water Quality Status ◽  
Big Rivers ◽  
Musi River

The Musi River is one of the biggest river of twelve big rivers in South Sumatra Province. Water quality of this river affects the water quality in the estuary and biological health in its surrounding so that it is important to determine the Cu and Pb concentrations. The purposes of this study were to analize distribution of heavy metals (Cu and Pb) and to determine the water quality status in March and September 2014. The water and sediment samples were collected from eight stations along the Musi River from downstream to the estuary. Heavy metal concentration was analized by employing USEPA 30050B method using AAS Spektra plus variant with air mixure flame – acetylene. Dissolved Cu and Pb concentrations in March were 0,002 - 0,006 mg/l and 0,002-0,003 mg/l, respectively, while in September were 0,001-0,010 mg/lfor Cu and 0,001-0,005 mg/lfor Pb. Cu and Pb concentrations in sediment detected in March were 6,92-16,4 mg/l and 1,9-11,4 mg/l, respectively, while in September were  2,3-13,9 mg/l for Cu and 4,29-9,95 mg/l for Pb. Student test analysis showed that was no significant differences between Pb and Cu concentrations (dissolved and sediment) between March and September. Generally, the concentration of heavy metals Cu and Pb in Musi River estuary were still below specified quality standards.Keywords: heavy metal, Cu, Pb, the Musi River, estuary

scholarly journals Investigation of water quality from Damanga estuary through the water quality indexing Gujarat

2021 ◽  
Vol 9 (2) ◽  
Author(s):  
Shefaliben Sureshbhai Patel ◽  
Susmita Sahoo
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Anthropogenic Activities ◽  
River Estuary ◽  
Poor Quality ◽  
Quality Parameters ◽  
Quality Data ◽  
Water Quality Data ◽  
Investigation Area

The seasonal investigation about the water quality from Damanganga river estuary on two habitats downstream and upstream was carried out from January to December 2019 containing three major seasons: winter, summer and monsoon. For this monitoring activity total 29 parameters (24 physico-chemical parameters and 5 heavy metals) were analyzed. Multivariate analyses suggested inter dependency among these studied parameters. Water Quality Index is computed based on the major fluctuated and affected parameters. The calculated values of WQI for all three seasons ranged from 122.84 to 173.82 which suggested poor water quality of the water body. WQI values of the investigation area proposed that the estuarine water quality is deteriorated due to high value of presented heavy metals (Aluminum, Iron, Manganese, Boron and Zinc), Chloride, Ammonium and Sulfate in water sample. In this case, the downstream station is having accessional pollutant contaminations while the upstream station is having diminutive pollutant contaminants. Temporally, the dominant frailty found during the winter followed by summer and monsoon. This study field exhibited poor quality of water; the reason behind this might be the impressive surrounding industrial zone as well as other anthropogenic activities. There is quite normal probability distribution expressed by the represented water quality data at the both habitats. The Bray-Curtis cluster analysis shows different percentage similarity level between the water quality parameters.  

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