ASSESSING THE RELATIONSHIP BETWEEN TOTAL PCBS, TOTAL SUSPENDED SOLIDS AND TURBIDITY SAMPLES COLLECTED DURING SURFACE WATER MONITORING OF THE HUDSON RIVER REMEDIAL DREDGING PROJECT, NEW YORK

2016 ◽  
Author(s):  
Mikayla M. Thomas ◽  
◽  
K. Farrar ◽  
D. Tromp ◽  
J. Chiarenzelli
Keyword(s):  
New York ◽  
Surface Water ◽  
Suspended Solids ◽  
Total Suspended Solids ◽  
Hudson River ◽  
Water Monitoring ◽  
Total Pcbs ◽  
The Relationship

Die Konstruktion von Natur – Central Park neu besichtigt | The Construction of Nature – Central Park Revisited

2005 ◽  
Vol 156 (8) ◽  
pp. 288-296
Author(s):  
Vittorio Magnago Lampugnani
Keyword(s):  
New York ◽  
Hudson River ◽  
The United States ◽  
Central Park ◽  
Housing Developments ◽  
Hudson River School ◽  
The North ◽  
Man And Nature ◽  
The 19Th Century ◽  
The Relationship

In the first half of the 19th century scientific philosophers in the United States, such as Emerson and Thoreau, began to pursue the relationship between man and nature. Painters from the Hudson River School discovered the rural spaces to the north of New York and began to celebrate the American landscape in their paintings. In many places at this time garden societies were founded, which generated widespread support for the creation of park enclosures While the first such were cemeteries with the character of parks, housing developments on the peripheries of towns were later set in generous park landscapes. However, the centres of the growing American cities also need green spaces and the so-called «park movement»reached a first high point with New York's Central Park. It was not only an experimental field for modern urban elements, but even today is a force of social cohesion.

scholarly journals Comparative assessment of the relationship between coliform bacteria and water geochemistry in surface and ground water systems

PLoS ONE ◽  
2021 ◽  
Vol 16 (9) ◽  
pp. e0257715
Author(s):  
Simon Appah Aram ◽  
Benjamin M. Saalidong ◽  
Patrick Osei Lartey
Keyword(s):  
Heavy Metals ◽  
Ground Water ◽  
Suspended Solids ◽  
Total Suspended Solids ◽  
Total Coliform ◽  
Water Systems ◽  
Water Sources ◽  
Faecal Coliform ◽  
Lower Odds ◽  
The Relationship

The occurrence of pollution indicator bacteria (total and faecal coliform) has been used as a sanitary parameter for evaluating the quality of drinking water. It is known that these indicators are associated with disease causing organisms which are of great concern to public health. This study assessed the relationship between coliform bacteria and water geochemistry in surface and ground water systems in the Tarkwa mining area using logistic regression models. In surface water sources, higher values of chloride (OR = 0.891, p<005), phosphates (OR = 0.452, p<0.05), pH (OR = 0.174, p<0.05) and zinc (OR = 0.001, p<0.05) were associated with lower odds of faecal coliform contamination. In groundwater sources, higher values of phosphates (OR = 0.043, p<0.001), total dissolved solids (OR = 0.858, p<0.05), turbidity (OR = 0.996, p<0.05) and nickel (OR = 6.09E-07, p<0.05) implied non-contamination by faecal coliform. However, higher values of electrical conductivity (OR = 1.097, p<0.05), nitrates (OR = 1.191, p<0.05) and total suspended solids (OR = 1.023, p<0.05) were associated with higher odds of faecal coliform contamination of groundwater sources. Nitrates and total suspended solids, in this case, were completely mediated by the heavy metals. For total coliform in surface water systems, higher values of magnesium (OR = 1.070, p<0.05) was associated with higher odds of total coliform contamination while higher values of phosphates (OR = 0.968, p<0.05) was associated with lower odds of total coliform contamination although the presence of heavy metals completely mediated these relationships. For ground water systems, higher values of pH (OR = 0.083, p<0.05), phosphates (OR = 0.092, p<0.05), turbidity (OR = 0.950, p<0.05) and chloride (OR = 0.860, p<0.05) were associated with lower odds of total coliform contamination. However, higher values of total suspended solids (OR = 1.054, p<0.05) and nitrates (OR = 1.069, p<0.05) implied contamination of total coliform in ground water sources. The relationship between nitrates and total coliform were mediated by the heavy metals. This study establishes the need to monitor, manage and remediate surface and ground water sources for potential disease causing microbes in ways that takes into consideration the factors that create different conditions in the two water systems. This study validates the usefulness of statistical models as tools for preventing surface and ground water contamination.

scholarly journals Lebegtetett hordalékmérési módszerek összehasonlító vizsgálata balatoni részvízgyűjtőkön

2017 ◽  
Vol 66 (2) ◽  
pp. 317-332 ◽  
Author(s):  
I. Potyó ◽  
I. Kása ◽  
Cs. Farkas ◽  
Gy. Gelybó ◽  
Zs. Bakacsi ◽  
...  
Keyword(s):  
Spatial Heterogeneity ◽  
Suspended Solids ◽  
Measurement Accuracy ◽  
Water Discharge ◽  
Total Suspended Solids ◽  
Monitoring Point ◽  
Handheld Device ◽  
The Relationship ◽  
Small Catchments ◽  
Soil Weight

The present study investigated the quantity of total suspended solids (TSS) in three small catchments and compared the data to turbidity measurements. The TSS data were based on filtration, drying and weight measurements, while the turbidity measurements were retrieved using a handheld device with a turbidity sensor. Water was collected daily at the catchment outlets from November 1, 2016 to May 31, 2017, representing the winter and spring seasons. The lowest quantity of TSS was detected at the catchment outlet of the Esztergályi Stream; however, there were two lakes close to the monitoring point where soil particles may have settled, possibly explaining the low TSS values. The Csorsza and Tetves streams had similar TSS values during winter, but in the spring samples the TSS values were approximately three times higher in the Csorsza Stream than in the Tetves Stream. The relationship between water discharge and TSS values was also investigated for the Tetves Stream, but no significant correlations were observed between them. The results suggested that the labour-intensive TSS measurements (e.g. filtration, soil weight measurements) could be replaced to a good approximation using the handheld device. The spatial heterogeneity within and between the catchments influences the amount of suspended sediment and hence the measurement accuracy. Therefore, the use of the handheld device should also be complemented with other methods, such as the filtration used in the present study, to attain more precise values.

scholarly journals Seasonal and Intra-Event Nutrient Levels in Farmed Prairie Potholes of the Des Moines Lobe

2019 ◽  
Vol 62 (6) ◽  
pp. 1607-1617
Author(s):  
Alexander R. Martin ◽  
Michelle L. Soupir ◽  
Amy L. Kaleita
Keyword(s):  
Surface Water ◽  
Suspended Solids ◽  
Total Suspended Solids ◽  
Prairie Pothole ◽  
Des Moines Lobe ◽  
South Central ◽  
Des Moines ◽  
Field Management ◽  
Concentration Changes ◽  
Total P

HighlightsNitrogen, total phosphorus, and total suspended solids concentrations were higher in early season inundation.Nitrate concentrations in farmed potholes decreased with multiday ponding.Farmed potholes act as hotspots, contributing P to drainage through surface intakes.Abstract. The prairie pothole region ranges from central Iowa to the northwest into Montana and south-central Canada, totaling around 700,000 km2. This area contains millions of potholes, or enclosed topographical depressions, which often inundate with rainfall. Many are located in areas that have been converted to agricultural land through installation of artificial drainage. However, even with drainage, potholes pond or remain saturated during and after significant rain events. In this two-year study, surface water depth was collected hourly (typically from after planting through harvest) from eight farmed potholes (drained and under corn-soybean rotation) on the Des Moines Lobe in central Iowa. Nutrient data were collected daily and tested for nitrogen (N) and phosphorus (P) when inundation depth exceeded 10 cm. The data were analyzed in two ways. First, seasonal differences were investigated using samples from the first day of each inundation event. Surface water concentrations were higher in the early growing season than late season for total N (TN), NO3-N, NH3-N, total P (TP), and total suspended solids (TSS). Secondly, average event concentration changes were determined. Nitrate reductions occurred in 85% of multiday events, but these reductions were offset by increases in P. Total P and dissolved reactive P (DRP) had significant increases that averaged 0.51 and 0.46 mg L-1 per event, respectively, with event lengths of 2 to 19 days. This study demonstrates that inundated farmed potholes reduce NO3-N but serve as in-field hotspots, contributing elevated TP and DRP to drainage waters. When a surface intake directly connects inundated farmed potholes to drainage, new strategies, such as field management or engineered technologies, are needed to mitigate P export. This study is useful in informing policy regarding field management and conservation of farmed potholes. Keywords: Farmed wetland, Nitrogen, Nutrients, Phosphorus, Prairie pothole.

Monsoon and Post-monsoon Evaluation of Water Quality of Phewa Lake in Pokhara, Midwestern, Nepal

2012 ◽  
Vol 3 (1) ◽  
Author(s):  
Kriti Acharya ◽  
Krishna Raj Tiwari ◽  
Subodh Sharma ◽  
Chiranjibi Prasad Upadhyaya ◽  
Yajna Prasad Timilsina ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Electric Conductivity ◽  
Suspended Solids ◽  
Surface Water Quality ◽  
Total Suspended Solids ◽  
Point Sources ◽  
Middle Point ◽  
Post Monsoon ◽  
Significant Difference

The study explored the lake as mesotrophic. Inflow streams to Phewa lake, lake itself and its outflow stream were sampled in monsoon and post-monsoon. Nine different sampling sites were chosen and physico-chemical parameters like pH, temperature, dissolved oxygen, electric conductivity were recorded at the spot and rest of the parameters (total nitrogen, total phosphorus and total suspended solids) were analyzed in the laboratory. The observed concentrations were compared with Standard of Surface water quality for sustaining aquatic life. There was no significant difference in DO level, pH, TSS whereas EC, TN and water temperature showed significant difference with respective seasons. The electric conductivity of Phirke khola (inflow stream to lake) was found high that means it was putting nutrient load to the lake. The total suspended solids were much higher (176 mg/l) at Harpan khola (inflow stream) in monsoon and maximum at the middle point of lake (11 mg/l) in post-monsoon. This showed that the TSS carried by Harpan khola are maximally deposited at middle point of lake and shortening the life of the lake. The study finally recommends controlling the discharge of pollution load and periodic surface water quality monitoring and vertical (depth wise) monitoring is necessary. Keywords - Aquatic Ecology, Wetlands, Point sources, mesotrophic, quality indicators, suspended solids, nutrient input, Phewa Lake, Pokhara, Nepal

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