Chloride Dynamics in Urban Streams: An Eastern Iowa Case Study

2020 ◽  
Vol 127 (1-4) ◽  
pp. 1-8
Author(s):  
Rebecca L. Kauten
Keyword(s):  
Urban Streams ◽  
Urban Stream ◽  
Baseline Knowledge ◽  
Cedar Rapids ◽  
Chloride Concentrations

A series of urban stream and snowmelt samples collected 2017-2018 provide a localized understanding of seasonal chloride concentrations in urban streams and establishes baseline knowledge of conditions in Cedar Rapids and Coralville, Iowa. Results indicate both variability in chloride concentrations based on location as well as conditions under which water was sampled.

scholarly journals How effective is river restoration in re-establishing groundwater–surface water interactions? – A case study

2015 ◽  
Vol 19 (6) ◽  
pp. 2663-2672 ◽  
Author(s):  
A.-M. Kurth ◽  
C. Weber ◽  
M. Schirmer
Keyword(s):  
Surface Water ◽  
River Restoration ◽  
Morphological Changes ◽  
Cost Effective ◽  
Urban Stream ◽  
Distributed Temperature Sensing ◽  
River Bed ◽  
Before And After ◽  
Restoration Measures

Abstract. In this study, we investigated whether river restoration was successful in re-establishing groundwater–surface water interactions in a degraded urban stream. Restoration measures included morphological changes to the river bed, such as the installation of gravel islands and spur dykes, as well as the planting of site-specific riparian vegetation. Standard distributed temperature sensing (DTS) and novel active and passive DTS approaches were employed to study groundwater–surface water interactions in two reference streams and an experimental reach of an urban stream before and after its restoration. Radon-222 analyses were utilized to validate the losing stream conditions of the urban stream in the experimental reach. Our results indicated that river restoration at the study site was indeed successful in increasing groundwater–surface water interactions. Increased surface water downwelling occurred locally at the tip of a gravel island created during river restoration. Hence, the installation of in-stream structures increased the vertical connectivity and thus groundwater–surface water interactions. With the methods presented in this publication, it would be possible to routinely investigate the success of river restorations in re-establishing vertical connectivity, thereby gaining insight into the effectiveness of specific restoration measures. This, in turn, would enable the optimization of future river restoration projects, rendering them more cost-effective and successful.

scholarly journals The Value and Services of Urban Stream Polygnotou, Thessaloniki

Proceedings ◽  
2018 ◽  
Vol 2 (11) ◽  
pp. 576
Author(s):  
Eleni A. Athanasiadou ◽  
Maria Tratsela ◽  
Eleni Gkrimpa
Keyword(s):  
Green Infrastructure ◽  
Large Scale ◽  
Economic Value ◽  
Urban Streams ◽  
Urban Stream ◽  
Riparian Ecosystems ◽  
Runoff Water ◽  
Ecological Processes ◽  
Urban Stream Syndrome ◽  
Mental Map

Grey, blue and green infrastructure supports socio-ecological processes the city undergoes. Yet, procedures of constructing anthropogenic habitats often undermine the value of natural landscape elements such as urban streams. Thessaloniki’s backbone comprises of urban streams that run from the suburban forest of ‘Seih-Sou’ to the Thermaikos Gulf acting as corridors of the natural urban matrix. Policies of the past have dealt with urban streams through extensive engineering drainage methods, eliminating the risk of flooding, yet resulting in rapid stormwater runoff, water quality problems, disturbed riparian ecosystems, leading to the urban stream syndrome. Furthermore, they have failed to address urban streams as an inseparable part of the landscape and thus to incorporate them in people’s mental map and everyday activities. The paper discusses the case of ‘Polygnotou stream’ which forms the beginning of the large scale engineered peripheral moat of Thessaloniki, constructed in the 60’s, and playing the role of the water recipient for six urban streams in total. It falls unknown to the majority of people living in the area, yet its services as an ecosystem ought to be acknowledged, helping inform decision makers of its socio-ecologic, perceptual and economic value. In addition, Polygnotou stream, adjacent streams and the peripheral moat overall, could be considered as a touristic product of great importance.

scholarly journals Correction to: Water quality evaluation of two urban streams in Northwest Uruguay: are national regulations for urban stream quality sufficient?

2020 ◽  
Vol 192 (11) ◽  
Author(s):  
Elena Alvareda ◽  
Christine Lucas ◽  
Mercedes Paradiso ◽  
Adriana Piperno ◽  
Pablo Gamazo ◽  
...  
Keyword(s):  
Water Quality ◽  
Quality Evaluation ◽  
Urban Streams ◽  
Urban Stream ◽  
Water Quality Evaluation ◽  
Stream Quality

PROFILE: Urban Stream Rehabilitation: A Design and Construction Case Study

1999 ◽  
Vol 23 (2) ◽  
pp. 165-177 ◽  
Author(s):  
SCOTT MORRIS ◽  
TODD MOSES
Keyword(s):  
Urban Stream ◽  
Design And Construction

scholarly journals Taxon-Driven Functional Shifts Associated with Storm Flow in an Urban Stream Microbial Community

mSphere ◽  
2018 ◽  
Vol 3 (4) ◽  
Author(s):  
Adit Chaudhary ◽  
Imrose Kauser ◽  
Anirban Ray ◽  
Rachel Poretsky
Keyword(s):  
Public Health ◽  
Water Quality ◽  
Microbial Community ◽  
Microbial Community Composition ◽  
Urban Streams ◽  
Urban Stream ◽  
Flow Conditions ◽  
Shotgun Metagenomics ◽  
Storm Flow ◽  
The Impact

ABSTRACT Urban streams are susceptible to stormwater and sewage inputs that can impact their ecological health and water quality. Microbial communities in streams play important functional roles, and their composition and metabolic potential can help assess ecological state and water quality. Although these environments are highly heterogenous, little is known about the influence of isolated perturbations, such as those resulting from rain events on urban stream microbiota. Here, we examined the microbial community composition and diversity in an urban stream during dry and wet weather conditions with both 16S rRNA gene sequencing across multiple years and shotgun metagenomics to more deeply analyze a single storm flow event. Metagenomics was used to assess population-level dynamics as well as shifts in the microbial community taxonomic profile and functional potential before and after a substantial rainfall. The results demonstrated general trends present in the stream under storm flow versus base flow conditions and also highlighted the influence of increased effluent flow following rain in shifting the stream microbial community from abundant freshwater taxa to those more associated with urban/anthropogenic settings. Shifts in the taxonomic composition were also linked to changes in functional gene content, particularly for transmembrane transport and organic substance biosynthesis. We also observed an increase in relative abundance of genes encoding degradation of organic pollutants and antibiotic resistance after rain. Overall, this study highlighted some differences in the microbial community of an urban stream under storm flow conditions and showed the impact of a storm flow event on the microbiome from an environmental and public health perspective. IMPORTANCE Urban streams in various parts of the world are facing increased anthropogenic pressure on their water quality, and storm flow events represent one such source of complex physical, chemical, and biological perturbations. Microorganisms are important components of these streams from both ecological and public health perspectives. Analysis of the effect of perturbations on the stream microbial community can help improve current knowledge on the impact such chronic disturbances can have on these water resources. This study examines microbial community dynamics during rain-induced storm flow conditions in an urban stream of the Chicago Area Waterway System. Additionally, using shotgun metagenomics we identified significant shifts in the microbial community composition and functional gene content following a high-rainfall event, with potential environment and public health implications. Previous work in this area has focused on specific genes/organisms or has not assessed immediate storm flow impact.

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