Effects of basin size on low-flow stream chemistry and subsurface contact time in the Neversink River watershed, New York

Purpose Societal problems have impacted the northeast of the USA for various generations. This paper aims to analyse various sustainability aspects in the Hudson River watershed of New York by highlighting a temporal progression from environmental sustainability at the watershed level in the 1970s to growing concerns with more localized cross-border social and cultural sustainability in recent decades. We discuss an engagement with the Rapp Road Historic District and a documentary screening series as potential ways to eliminate racism and embrace diversity. Design/methodology/approach The research was based on fieldwork and classroom teaching conducted mostly since summer 2014. It included mixed methods combining document analysis and reviews with the examination of case studies, and the assessment of public policy priorities. Findings Formal training has to be combined with a substantial dose of realism, humility and motivation to recognize that what the authors teach and research in the community matters. Future learning experiences within a place-based education paradigm could include: Having students help devise urban rehabilitation strategies whilst suggesting integrative measures with the surrounding built and natural environments; students could also help improve public spaces in the neighbourhood; and finally, they could also help to strengthen the cultural identity of the district by augmenting urban design features endogenous to the African American community. Practical implications Opportunities could be further augmented with service-learning projects and programmes, internships and even full-time jobs for recent graduates in local community development organizations. Social implications The study served to raise the community’s awareness of its own natural, ecological and human assets, and to create place-based real-world opportunities for students and faculty in environmental and cultural sustainability studies. Originality/value Environmental sustainability is discussed with the creation of the Hudson River Valley National Heritage Area, whilst the public engagement with the Rapp Road Historic Association in the Capital Region of upstate New York, the identification of an emerging creative cluster in the Berkshires-Hudson region, and a documentary and discussion series on striving for diverse cities serve to demonstrate current concerns with social and cultural sustainability.

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Leach Behavior of SRL TDS-131 Defense Waste Glass in Water at High&Low Flow Rates

MRS Proceedings ◽

10.1557/proc-26-643 ◽

1983 ◽

Vol 26 ◽

Cited By ~ 2

Author(s):

Aaron Barkatt ◽

William Sousanpour ◽

Alisa Barkatt ◽

Morad A. Boroomand ◽

Pedro B. Macedo

Keyword(s):

Contact Time ◽

Protective Layer ◽

High Flow ◽

Low Flow ◽

Matrix Elements ◽

Flow Rates ◽

Low Concentrations ◽

Controlling Mechanism ◽

The Matrix ◽

Leach Behavior

ABSTRACTLeach tests carried out on SRL TDS-131 Defense Waste Class indicate that at high flow rates the controlling mechanism is simple corrosion. The matrix elements (Si, Al) are leached out at rates similar to those of the leaching of the alkalis and of boron, and the leaching process is nearly linear with time. At slow flow rates (below 1 m/yr) leaching becomes controlled by the build-up of a protective layer. Al and most of the Si remain in the leached surface layer. The leach rates decrease in the course of the test before leveling off at constant values which are almost inversely proportional to the contact time, indicating that leachate concentrations have become solubility-limited. The low concentrations observed at this stage indicate the formation of alteration products.

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Changes in streamflow regimes and their response to different soil and water conservation measures in Loess Plateau watersheds

10.22541/au.161734646.68347691/v1 ◽

2021 ◽

Author(s):

Shuyu Zhang ◽

Guangju Zhao ◽

Xingmin Mu ◽

Peng Tian

Keyword(s):

Loess Plateau ◽

Water Conservation ◽

Human Activities ◽

Soil And Water Conservation ◽

Low Flow ◽

Hydrological Change ◽

River Watershed ◽

Daily Streamflow ◽

Conservation Measures ◽

Soil And Water

Investigating the changes in streamflow regimes is useful for understanding the mechanisms associated with hydrological processes in different watersheds and for providing information to facilitate water resources management. In this study, we selected three watersheds, i.e., Sandu River, Hulu River, and Dali River on the Loess Plateau, to examine the changes in the streamflow regimes and to determine their responses to different soil and water conservation measures (terracing, afforestation, and damming). The daily runoff was collected continuously by three hydrological gauges close to the outlets of the three watersheds from 1965 to 2016. The eco-surplus, eco-deficit, and degree of hydrological change were assessed to detect hydrological alterations. The Budyko water balance equation was applied to estimate the potential impacts of climate change and human activities on the hydrological regime changes. Significant decreasing trends (P < 0.05) were detected in the annual streamflow in the Sandu and Dali River watersheds, but not in the Hulu River watershed where afforestation dominated. The annual eco-surplus levels were low and they decreased slightly at three stations, whereas the eco-deficit exhibited dramatic increasing trends in the Sandu and Dali River watersheds. In the Sandu River watershed (dominated by terraces), the runoff exhibited the most significant reduction and the eco-deficit was the highest among the three watersheds. The integral degrees of hydrological change were higher in the Sandu River watershed than the other two watersheds, thereby suggesting substantial variations in the magnitude, duration, frequency, timing, and rate of change in the daily streamflow. In the Dali River watershed (dominated by damming), the changes in the extreme flow were characterized by a decreasing number appearing in high flow. In these watersheds, human activities accounted for 74.1% and 91.78% of the runoff reductions, respectively. In the Hulu River watershed (dominated by afforestation), the annual runoff exhibited an insignificant decreasing trend but with a significant increase in the low flow duration. Rainfall changes accounted for 64.30% of the runoff reduction.

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National Dam Safety Program. Jerome Park Reservoir Dam (NDS NY 64, NYSDEC 135 LH), Lower Hudson River Watershed, Bronx County, New York. Phase I Inspection Report

10.21236/ada064870 ◽

1978 ◽

Author(s):

Edward A. Nowatzki ◽

Gary S. Salzman

Keyword(s):

New York ◽

Phase I ◽

Hudson River ◽

Dam Safety ◽

Safety Program ◽

River Watershed

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, Stream Flow, Stream Chemistry and Sediment Transport

Ecological Studies - Water and the Rainforest in Malaysian Borneo ◽

10.1007/978-3-030-91544-5_16 ◽

2022 ◽

pp. 271-284

Author(s):

Ian Douglas

Keyword(s):

Sediment Transport ◽

Stream Flow ◽

Stream Chemistry ◽

Flow Stream

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The Hudson River Watershed, New York State, USA

Catchment and River Basin Management ◽

10.4324/9780203129159-16 ◽

2015 ◽

pp. 95-117

Keyword(s):

New York ◽

New York State ◽

Hudson River ◽

York State ◽

River Watershed

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The Cumulative Effects of Forest Disturbance and Climate Variability on Streamflow in the Deadman River Watershed

Forests ◽

10.3390/f10020196 ◽

2019 ◽

Vol 10 (2) ◽

pp. 196 ◽

Cited By ~ 3

Author(s):

Krysta Giles-Hansen ◽

Qiang Li ◽

Xiaohua Wei

Keyword(s):

Climate Variability ◽

Forest Cover ◽

Forest Disturbance ◽

Climatic Variability ◽

High Flow ◽

The Body ◽

Cumulative Effects ◽

Low Flow ◽

Mean Flow ◽

River Watershed

Climatic variability and cumulative forest cover change are the two dominant factors affecting hydrological variability in forested watersheds. Separating the relative effects of each factor on streamflow is gaining increasing attention. This study adds to the body of literature by quantifying the relative contributions of those two drivers to the changes in annual mean flow, low flow, and high flow in a large forested snow dominated watershed, the Deadman River watershed (878 km2) in the Southern Interior of British Columbia, Canada. Over the study period of 1962 to 2012, the cumulative effects of forest disturbance significantly affected the annual mean streamflow. The effects became statistically significant in 1989 at the cumulative forest disturbance level of 12.4% of the watershed area. The modified double mass curve and sensitivity-based methods consistently revealed that forest disturbance and climate variability both increased annual mean streamflow during the disturbance period (1989–2012), with an average increment of 14 mm and 6 mm, respectively. The paired-year approach was used to further investigate the relative contributions to low and high flows. Our analysis showed that low and high flow increased significantly by 19% and 58%, respectively over the disturbance period (p < 0.05). We conclude that forest disturbance and climate variability have significantly increased annual mean flow, low flow and high flow over the last 50 years in a cumulative and additive manner in the Deadman River watershed.

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