surface water Articles
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Surface Water Management
The update from the Government on the long term arrangements for Surface Water Management written by Parliamentary Under Secretary of State for the Environment, Dr Thérèse Coffey is available here. 5 action areas are described on the report as well as explanation what has been done and what are the plans to better prepared for possible flooding. ...
By Aquobex
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A New Way to Locate Seeps Into Surface Waters
How can we determine where groundwater is seeping into rivers and bays? Knowing seep locations can help with selecting sampling locations, identifying contaminant sources, determining whether contamination is historic or on-going, and designing remediation. Historically, methods for locating seeps have been limited. Due to cost, sampling can only be done at a few locations. This means we ...
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Aiming to Improve Local Marine Conditions
Surface water measurements in the Stockholm archipelago Waxholmsbolaget Shipping Company assists the entrepreneurially lead Baltic Deepwater Life Organisation to make high-resolution surface water measurements in the Stockholm Archipelago. The goal is to map model the driving factors behind excess nutrients in the marine environment. Learn more about the products and systems used to assess the ...
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Spatial–temporal distribution of phthalate esters from riverine outlets of Pearl River Delta in China
The aquatic environments of the Pearl River Delta (PRD) in China have been contaminated by various industrial chemicals from local industries. In this study, the spatial–temporal distribution of six priority phthalate esters (PAEs) in surface water and sediments from the PRD was investigated. The PAEs were detected with total concentrations (Σ6PAEs) ranging from 0.35 to 20.70 ...
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Drinking Surface Water Pilot - Case Study
Bowen Island Municipality’s Cove Bay Water System (CBWS) treats surface water from Grafton Lake to drinking water. Historically, the lake water was treated with hypochlorite addition however this treatment is insufficient to meet the Canadian Drinking Water Quality Guidelines (CDWQG) for several parameters including protozoa, turbidity, manganese and colour. ...
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A country case study comparison on groundwater and surface water interaction
Traditionally, managing water resources has focused on surface water or groundwater as if they were separate entities. As development of land and water resources increases, it is apparent that development of either these resources affects the quantity and quality of the other. Nearly all surface water features interact with groundwater. These interactions take many forms. This paper provides an ...
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Quantitative estimation of groundwater recharge ratio along the riparian of the Yellow River
Quantitative estimation of groundwater recharge is crucial for limited water resources management. A combination of isotopic and chemical indicators has been used to evaluate the relationship between surface water, groundwater, and rainfall around the riparian of the Yellow River in the North China Plain (NCP). The ion molar ratio of sodium to chloride in surface- and groundwater is 0.6 and ...
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Surface Water / Algae Blooms Case Study
Challenge The city river in Berlin is contaminated to the point that fish death events are common. Combined sewage overflows, stormwater runoff and the high traffic of ships are the main sources of contamination. The high amount of nutrients and the high tempratures in the summer make the river prone to algae blooms. For these reasons, the shore of the river was selected as the first pilot ...
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Experimental study on improvement effect of guide wall to water flow in bend of spillway chute
In order to improve water flow in a bend of a spillway chute using a guide wall, modeling experiments with or without a guide wall under conditions of three different bend axial radii, three chute bottom slopes and three flow rates were carried out in this study. Two indexes were calculated, which are the improved water surface uniformity and the reduced rate of water surface difference in ...
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Rainfall and surface water resources of Rajasthan State, India
The water resources in Rajasthan State are facing a crucial stage even after average/good rainfall. Temporal distributions as well as the spatial variability of rainfall within the state were investigated by applying an analysis of variance (ANOVA) test. The effect of change in catchment characteristics and anthropogenic activities on overland flow are also investigated in this paper by ...
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Coupling FEFLOW and MIKE11 to optimise the flooding system of the Lower Havel polders in Germany
Based on the software MIKE 11 and FEFLOW, a coupling surface water-groundwater interface has been developed to investigate the interaction for river branches, polders and wetlands. Its functionality covers the exchange of boundary conditions during runtime and the synchronisation of the temporal discretisation. The system has been applied to simple benchmark cases and complex field conditions. ...
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Application of Rn-222 isotope for the interaction between surface water and groundwater in the Source Area of the Yellow River
A pioneering rapid and direct measurement of dissolved 222Rn in the field has been used here to explore interaction between surface and groundwater in the source area of the Yellow River (SAYR). The results indicate average 222Rn activity of 2,371 Bq/m3 in surface water and 27,835 Bq/m3 in groundwater. The high 222Rn activity (up to 9,133 Bq/m3) found in the southeast part of the SAYR ...
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Surface water Sulfate dynamics in the northern Florida everglades
Received for publication August 24, 2007. Sulfate contamination has been identified as a serious environmental issue in the Everglades ecosystem. However, it has received less attention compared to P enrichment. Sulfate enters the Arthur R. Marshall Loxahatchee National Wildlife Refuge (Refuge), a remnant of the historic Everglades, in pumped stormwater discharges with a mean concentration of ...
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Drs. Leonhart & Hargis present at international conference in Florence.
Drs. Leo Leonhart and David Hargis presented a paper titled 'Groundwater/Surface Water Interactions Along the San Pedro River, Cochise County, Arizona, USA' on August 21, 2004. The presentation was made at the 32nd International Geological Congress in Florence, Italy, in the historic Fortezza da Basso. The Congress was expected to be attended by over 5,000 geoscientists ...
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12 Resources for Surface Water Quantity Monitoring
While surface water quantity has its challenges, it’s an essential part of understanding how our water sources can continue to support the many different uses and to track whether protection and restoration measures are working – and where they can be improved. To help save you hours of research and pondering, we’ve created 12 resources to guide you in your journey of designing ...
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Photochemical fate of the vasodilator drug pentoxifylline in surface waters
This study is the first to comprehensively investigate the photochemical fate of pentoxifylline in natural water systems. Among all attenuation processes, indirect sunlight photolysis is very likely the primary process for pentoxifylline degradation. The combination of dissolved organic matter (represented by fulvic acid), NO3− and HCO3− closely simulated the photolysis rate in real surface ...
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A review on interaction of groundwater and surface water
Interactions between groundwater and surface water play a fundamental role in water resources management. The movement of water between groundwater and surface water should be investigated in view of both quantity and quality aspects of water resources. In this paper, an attempt is made to define the primary concepts of this interaction and to illustrate a case study undertaken in ...
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The natural degradation of benzophenone at low concentration in aquatic environments
The natural degradation caused by sun irradiation and microbes in aquatic environments is of major significance in the elimination process of benzophenone (BP). In this study, the fate of BP in surface water at a low concentration of 10 μg/L was investigated, including both photodegradation and microbial degradation. The result showed that the photodegradation rate of BP was affected by ...
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Demand management in urban water supply
Since the 1930s, the drinking water supply of the Rabat-Casablanca coastal area has depended on water transfers from groundwater, from Maamora, and surface water, from the Bou Regreg Basin. Assessments carried out during the 1980s, based on patterns of water use at that time, showed that by 2010, transfers would have to be extended to include the surface water of Oued Sebu, if water requirements ...
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Assessment of heavy metal pollution in surface water
A total of 96 surface water samples collected from river Ganga in West Bengal during 2004-05 was analyzed for pH, EC, Fe, Mn, Zn, Cu, Cd, Cr, Pb and Ni. The pH was found in the alkaline range (7.21-8.32), while conductance was obtained in the range of 0.225-0.615 mmhos/cm. Fe, Mn, Zn, Ni, Cr and Pb were detected in more than 92% of the samples in the range of 0.025-5.49, 0.025-2.72, 0.012-0.370, ...
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