scholarly journals Quantifying Chloride Retention in Urban Stormwater Management Ponds Using A Mass Balance Approach

2021 ◽  
Author(s):  
Wai Ying Lam
Keyword(s):  
Mass Balance ◽  
Stormwater Management ◽  
Aquatic Biota ◽  
Watershed Scale ◽  
Transport Models ◽  
Urban Stormwater Management ◽  
Deicing Salts ◽  
Spatially Distributed ◽  
Mass Balance Approach

Chloride (CI) from runoff containing deicing salts is retained in watersheds after deicing ends, resulting in deleterious effects on aquatic biota. Stormwater management ponds (SWMPs) are known to impact pollutant transport. However, there is little information on what role SWMPs play in the timing and magnitude of CI transport in urban watersheds. This study quantifies the mas of CI retained in two urban SWMPs over varying timescales and the in-stream response to CI-laden pond outflows. The findings suggest that SWMPs likely play a role in watershed-scale CI retention. In the receiving creek, CI pulses corresponded to CI releases from the pond. The results of this study suggest that SWMPs concentrate spatially distributed salt inputs and modify the timing and magnitude of their release to receiving streams. This study will help parameterize the role of SWMPs in watershed-scale CI transport models and geospatial models of salt vulnerable areas.

scholarly journals Quantifying Chloride Retention in Urban Stormwater Management Ponds Using A Mass Balance Approach

2021 ◽  
Author(s):  
Wai Ying Lam
Keyword(s):  
Mass Balance ◽  
Stormwater Management ◽  
Aquatic Biota ◽  
Watershed Scale ◽  
Transport Models ◽  
Urban Stormwater Management ◽  
Deicing Salts ◽  
Spatially Distributed ◽  
Mass Balance Approach

Chloride (CI) from runoff containing deicing salts is retained in watersheds after deicing ends, resulting in deleterious effects on aquatic biota. Stormwater management ponds (SWMPs) are known to impact pollutant transport. However, there is little information on what role SWMPs play in the timing and magnitude of CI transport in urban watersheds. This study quantifies the mas of CI retained in two urban SWMPs over varying timescales and the in-stream response to CI-laden pond outflows. The findings suggest that SWMPs likely play a role in watershed-scale CI retention. In the receiving creek, CI pulses corresponded to CI releases from the pond. The results of this study suggest that SWMPs concentrate spatially distributed salt inputs and modify the timing and magnitude of their release to receiving streams. This study will help parameterize the role of SWMPs in watershed-scale CI transport models and geospatial models of salt vulnerable areas.

Developing a Machine Learning Algorithm to Identify Hot Moments Using Mass Balance Approach at Watershed Scale

2021 ◽  
Author(s):  
Thakshajini Thaasan ◽  
Phung Quang ◽  
Noel Aloysius
Keyword(s):  
Machine Learning ◽  
Water Quality ◽  
Mass Balance ◽  
Crop Yield ◽  
Land Management ◽  
Learning Algorithm ◽  
Machine Learning Algorithm ◽  
Watershed Scale ◽  
Relative Change ◽  
Mass Balance Approach

<p>Preserving and promoting the sustainable use of natural resources while stabilizing healthy ecosystems under rapid environmental changes is a tremendous challenge for the international community. Science-based strategies are imperative to maintain and improve Earth’s ecosystem. Our research is designed to improve predictive ability of managed ecosystems’ responses to changing weather patterns and human management. Specifically, our research seeks to develop conservation plans to improve water quality in streams and lakes, while maintaining the economic sustainability of food production systems. Reducing pollution loading into aquatic systems help improve the water quality and enhance ecosystem sustainability. Non-point pollution sources are predominant factors in increasing pollution into the water bodies. Identifying the pollution sources is important to mitigate the impact. For this reason, the main objective of our study is to identify the “hot spots” and “hot moments” of excessive nitrogen and phosphorus leaching from managed landscapes in the midwestern United States.</p><p>We developed a simple lumped model with three parameters to simulate key water fluxes - surface and subsurface runoff, and evapotranspiration (ET) in the Maumee River Basin. We designed a machine learning algorithm to identify “hot moments” using nitrogen mass balance approach at watershed-scale. The simple model helps to link the relationship between applied fertilizer and retained nutrients in the soil that the heterogeneous landscape and land management influence. Nitrogen retained in the soil will be used as an output variable and connected with predictor variable ET. Relationships between crop yield and water use in crop growth (ET) could be interpreted in a simple empirical formulation where relative change in crop yield is related to the corresponding relative change in ET, which can be expressed as,</p><p>1−𝑌<sub>𝑎</sub>/ 𝑌<sub>𝑥</sub>=𝐾<sub>𝑦</sub> (1− 𝐸𝑇<sub>𝑥</sub>/𝐸𝑇<sub>𝑎</sub>)</p><p>where Yx and Ya are the maximum and actual yields, ETx and ETa are the maximum and actual evapotranspiration, and Ky is a yield response factor representing the effect of relative change in ET on crop yield. The developed algorithm will be trained, tested, and validated using the coupled water flux and crop yield models. We will then demonstrate how these relationships can be extended to complex watershed model simulations that account for key land management decisions, land use pattern, crop type, soil, and topographic variability. Ultimately, we hope our findings will enhance the knowledge related to the environmental policy and decision making.</p>

scholarly journals The role of trees in urban stormwater management

2017 ◽  
Vol 162 ◽  
pp. 167-177 ◽  
Author(s):  
Adam Berland ◽  
Sheri A. Shiflett ◽  
William D. Shuster ◽  
Ahjond S. Garmestani ◽  
Haynes C. Goddard ◽  
...  
Keyword(s):  
Stormwater Management ◽  
Urban Stormwater ◽  
Urban Stormwater Management

Impediments and Solutions to Sustainable, Watershed-Scale Urban Stormwater Management: Lessons from Australia and the United States

2008 ◽  
Vol 42 (2) ◽  
pp. 344-359 ◽  
Author(s):  
Allison H. Roy ◽  
Seth J. Wenger ◽  
Tim D. Fletcher ◽  
Christopher J. Walsh ◽  
Anthony R. Ladson ◽  
...  
Keyword(s):  
United States ◽  
Stormwater Management ◽  
The United States ◽  
Watershed Scale ◽  
Urban Stormwater ◽  
Urban Stormwater Management

Strategies to overcome barriers and to effectively achieve sustainable urban stormwater management: A review

2020 ◽  
Author(s):  
Anaí Floriano Vasconcelos ◽  
Ademir Paceli Barbassa
Keyword(s):  
Literature Review ◽  
Stormwater Management ◽  
Urban Sustainability ◽  
The Other ◽  
Urban Stormwater ◽  
Urban Stormwater Management ◽  
Solution Strategies ◽  
Other Hand ◽  
Common Barriers

Sustainable urban stormwater management (SUSM) is essential to urban sustainability. However, barriers to adopting it are observed even in places where SUSM is more widespread. Recent studies have evaluated strategies for overcoming some types of barriers. However, any study has systematically analyzed the strategies available for overcoming the most common barriers, contributing to widely adopting SUSM. Thus, this article aimed to provide a literature review on these strategies. Sixty-six documents were evaluated, resulting in eight solution strategies, detailed by 81 implementation measures, which were critically analyzed. The interrelationships among the solution strategies and their applicability to overcome the SUSM-related barriers were evaluated. This analysis showed that the solution strategies are interdependent, so it would be inefficient to adopt the strategies in isolation. On the other hand, adopting a strategy can help overcome several barriers, also enhancing other strategies, and consequently contributing to the global scenario of effective SUSM adoption. The availability of this systematized information helps break through common barriers and optimizing efforts to adopt SUSM where it is incipient.

Urban stormwater: the analysis of the failure of the alternative techniques and the management of quality

1995 ◽  
Vol 32 (1) ◽  
pp. 33-39
Author(s):  
E. Alfakih ◽  
S. Barraud ◽  
Y. Azzout ◽  
B. Chocat
Keyword(s):  
Stormwater Management ◽  
Difficult Problem ◽  
Management Approach ◽  
Alternative Technique ◽  
Urban Stormwater ◽  
Urban Stormwater Management ◽  
Porous Pavement ◽  
Alternative Techniques ◽  
Design Construction

The implementation of alternative techniques in urban stormwater management is a difficult problem in terms of choice, design, construction, and operating. We applied a quality management approach to try and have a better understanding of these techniques. The quality of an alternative technique in urban stormwater management is defined; the factors that lead to failures were identified and analysed. In order to reduce these factors, tools were developed, and measures that allow the achievement of the necessary standard of quality are suggested. In this article, all the illustrations refer to the porous pavement technique.

Comparison of the efficiency of best stormwater management practices in urban drainage systems

1999 ◽  
Vol 39 (9) ◽  
pp. 269-276 ◽  
Author(s):  
R. Mehler ◽  
M. W. Ostrowski
Keyword(s):  
Stormwater Management ◽  
Management Practices ◽  
Alternative Methods ◽  
Urban Drainage ◽  
Pollution Load ◽  
Load Model ◽  
Urban Stormwater Management ◽  
Sewer Systems ◽  
Combined Sewer ◽  
Stormwater Management Practices

Increasingly extended and alternative methods for urban stormwater management have been discussed in Germany and elsewhere. Without question an economically and ecologically sound combination of central and decentral measures will be a concept of the future. Yet, at present the introduction of approaches other than traditional combined sewer systems is restricted due to missing planning tools and technologies. Adding a number of frequently used Best Stormwater Management Practices (BSMP's) has widely extended the applicability of an existing stormwater water balance and pollution load model.

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