Impact of Urban Development on Physical and Chemical Hydrogeology

Wong, C. I.; Sharp, John M.; Hauwert, Nico M.; Landrum, Jeffery; White, Kristin

doi:10.2113/gselements.8.6.429

Cited by 31 publications

(15 citation statements)

References 27 publications

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“…This is because methods developed in relatively undisturbed experimental sites may not translate to perturbed urban environments [Buttle et al, 1995], and tracer signals from urban runoff may be confounded by other anthropogenic influences such as leaking supply and sewer pipes and water imports. Where isotopic tracers have been used in urban hydrology, they have enabled differentiation of water sources (e.g., mains supply, road runoff, sewage effluent, and natural recharge) and identification of their influence on urban streams and groundwater bodies [Harris et al, 1999;Gremillion et al, 2000;Wilcox et al, 2004;Wong et al, 2012]. However, the application of transit time models to catchments with contrasting urbanization levels by Burns et al [2005] was unable to differentiate stream water age.…”

Section: Introductionmentioning

confidence: 99%

Assessing urbanization impacts on catchment transit times

Soulsby

Birkel

Tetzlaff

2014

Geophysical Research Letters

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Stable isotopes have potential for assessing the hydrologic impacts of urbanization, although it is unclear whether established methods of isotope modeling translate to such disturbed environments. We tested two transit time modeling approaches (using a gamma distribution and a two‐parallel linear reservoir (TPLR) model) in a rapidly urbanizing catchment. Isotopic variability in precipitation was damped in streams with attenuation inversely correlated with urban cover. The models captured this reasonably well, although the TPLR better represented the integrated dual response of urban and nonurban areas with reduced uncertainty. Percent urban cover influenced the shape of the catchment transit time distribution. Total urban cover reduced the mean transit time to <10 days compared with ~1 year and ~2–3 years with 63% and 13% urbanization, respectively, while it was at >4 years for nonurban sites.

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Section: Introductionmentioning

confidence: 99%

Assessing urbanization impacts on catchment transit times

Soulsby

Birkel

Tetzlaff

2014

Geophysical Research Letters

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“…As expected most of the major parameters in the urban streams water, even when comparing their minimum values, exceed the median values of mainland stream water. Profound differences exist for EC, Na + , SO4 2-and Cl -, indicative of urban impact on water quality (Wong et al 2012). Atmospheric deposition and storm-water runoff in urban environments contains a variety of leached constituents including H2SO4, HNO3, organic matter, trace metals and industrial compounds.…”

Section: Major Parameters Of Water Chemistrymentioning

confidence: 99%

“…Microbial contamination due to wastewater is a very common threat in urban environments while contamination by metals and industrial compounds is a long-term concern in industrialized cities (Wong et al 2012). In this study the geochemistry of water samples and stream sediment samples, from all three streams, has been analysed and compared over a period of one year.…”

Section: Introductionmentioning

confidence: 99%

Comparative geochemistry of three urban streams in Athens: Kifissos-Podoniftis-Pikrodafni

et al. 2017

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The geochemistry of three urban streams in Athens was analysed and compared on the basis of major elements and heavy metals content in water and active sediment. The studied streams of Kifissos, Podoniftis and Pikrodafni run through the Athens basin of a total area of 540 km2 but differ with respect to the origin of their headwaters i.e., Parnitha, Penteli and Hymettus mountains. The main aim of the study was to determine the geochemical signature of water and sediment within the Athens hydrological basin and evaluate the effect of natural and anthropogenic environment on these water courses. A total of 56 stream water samples were obtained and analysed for major anions, cations and heavy metals (Mn, Cr, Cu, Zn, Pb) as well as nitrate and phosphate concentrations. Active stream sediments were collected at 22 locations along the streams and were analysed for heavy metals (Pb, Zn, Cu, Mn, Cr, Ni, Cd). Results indicated that rock weathering, rather than atmospheric or pollution influx is the dominant process affecting the major ion geochemistry of stream flow in the urban setting. However, Kifissos and Podoniftis waters had higher nitrate and phosphate concentrations indicating greater influence by anthropogenic activities. In general the quality characteristics of water and sediment in the study area were found to be in a good state regarding the studied parameters.

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“…In a 'Special Issue' of the Magazine ELEMENTS (on Urban Geochemistry), Wong et al (2012) noted that '' . .…”

Section: Urban Hydrographic Networkmentioning

confidence: 99%