Flow alteration impacts on Hudson Bay river discharge
This study explores flow regulation controls on daily river discharge variations and trends into Hudson Bay from four highly regulated and 17 moderately regulated/ unregulated systems over 1960–2016. These 21 rivers contribute ~70% of the total annual riverine freshwater export to Hudson Bay, with h...
Published in: | Hydrological Processes |
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Language: | English |
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Online Access: | http://hdl.handle.net/1993/34770 https://doi.org/10.1002/hyp.13285 |
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ftunivmanitoba:oai:mspace.lib.umanitoba.ca:1993/34770 2023-06-18T03:39:30+02:00 Flow alteration impacts on Hudson Bay river discharge Dery, Stephen J. Stadnyk, Tricia A. MacDonald, Matthew K. Koenig, Kristina A. Guay, Catherine 2020-07-10T16:55:49Z application/pdf http://hdl.handle.net/1993/34770 https://doi.org/10.1002/hyp.13285 eng eng John Wiley and Sons, Ltd Déry SJ, Stadnyk TA, MacDonald MK, Koenig KA, Guay C. Flow alteration impacts on Hudson Bay river discharge. Hydrological Processes. 2018;1–12. https://doi.org/10.1002/hyp.13285 http://hdl.handle.net/1993/34770 https://doi.org/10.1002/hyp.13285 open access Climate Change flow regulation Hudson Bay James Bay Hydropower pan-Arctic river discharge streamflow water resources Technical Report 2020 ftunivmanitoba https://doi.org/10.1002/hyp.13285 2023-06-04T17:41:42Z This study explores flow regulation controls on daily river discharge variations and trends into Hudson Bay from four highly regulated and 17 moderately regulated/ unregulated systems over 1960–2016. These 21 rivers contribute ~70% of the total annual riverine freshwater export to Hudson Bay, with highly regulated and moderately regulated/unregulated rivers accounting for 47% and 53% of the discharge, respectively. Daily observed streamflow data from the Water Survey of Canada, Manitoba Hydro, Ontario Power Generation, and Hydro‐Québec are used. Decadal hydrographs of the mean and coefficient of variation of daily river discharge are developed to assess the changing hydrological regimes in both systems. Decadal spectral analyses reveal the dominant controls on daily river discharge input to Hudson Bay from the regulated and unregulated systems. Apart from expected peaks in spectral power on annual timescales arising from the nival regimes in both systems, a strong secondary peak emerges at weekly timescales from flow regulation due to hydropower production. Hydrographs that consider the day of the week reveal distinct weekly cycles in regulated rivers with ~10% declines in daily river discharge during weekends and statutory holidays relative to weekday averages, demonstrating the importance of regulation on the timing of freshwater into Hudson Bay. Report Arctic Climate change Hudson Bay James Bay MSpace at the University of Manitoba Arctic Bay River ENVELOPE(-81.662,-81.662,78.882,78.882) Canada Hudson Hudson Bay Hydrological Processes 32 24 3576 3587 |
institution |
Open Polar |
collection |
MSpace at the University of Manitoba |
op_collection_id |
ftunivmanitoba |
language |
English |
topic |
Climate Change flow regulation Hudson Bay James Bay Hydropower pan-Arctic river discharge streamflow water resources |
spellingShingle |
Climate Change flow regulation Hudson Bay James Bay Hydropower pan-Arctic river discharge streamflow water resources Dery, Stephen J. Stadnyk, Tricia A. MacDonald, Matthew K. Koenig, Kristina A. Guay, Catherine Flow alteration impacts on Hudson Bay river discharge |
topic_facet |
Climate Change flow regulation Hudson Bay James Bay Hydropower pan-Arctic river discharge streamflow water resources |
description |
This study explores flow regulation controls on daily river discharge variations and trends into Hudson Bay from four highly regulated and 17 moderately regulated/ unregulated systems over 1960–2016. These 21 rivers contribute ~70% of the total annual riverine freshwater export to Hudson Bay, with highly regulated and moderately regulated/unregulated rivers accounting for 47% and 53% of the discharge, respectively. Daily observed streamflow data from the Water Survey of Canada, Manitoba Hydro, Ontario Power Generation, and Hydro‐Québec are used. Decadal hydrographs of the mean and coefficient of variation of daily river discharge are developed to assess the changing hydrological regimes in both systems. Decadal spectral analyses reveal the dominant controls on daily river discharge input to Hudson Bay from the regulated and unregulated systems. Apart from expected peaks in spectral power on annual timescales arising from the nival regimes in both systems, a strong secondary peak emerges at weekly timescales from flow regulation due to hydropower production. Hydrographs that consider the day of the week reveal distinct weekly cycles in regulated rivers with ~10% declines in daily river discharge during weekends and statutory holidays relative to weekday averages, demonstrating the importance of regulation on the timing of freshwater into Hudson Bay. |
format |
Report |
author |
Dery, Stephen J. Stadnyk, Tricia A. MacDonald, Matthew K. Koenig, Kristina A. Guay, Catherine |
author_facet |
Dery, Stephen J. Stadnyk, Tricia A. MacDonald, Matthew K. Koenig, Kristina A. Guay, Catherine |
author_sort |
Dery, Stephen J. |
title |
Flow alteration impacts on Hudson Bay river discharge |
title_short |
Flow alteration impacts on Hudson Bay river discharge |
title_full |
Flow alteration impacts on Hudson Bay river discharge |
title_fullStr |
Flow alteration impacts on Hudson Bay river discharge |
title_full_unstemmed |
Flow alteration impacts on Hudson Bay river discharge |
title_sort |
flow alteration impacts on hudson bay river discharge |
publisher |
John Wiley and Sons, Ltd |
publishDate |
2020 |
url |
http://hdl.handle.net/1993/34770 https://doi.org/10.1002/hyp.13285 |
long_lat |
ENVELOPE(-81.662,-81.662,78.882,78.882) |
geographic |
Arctic Bay River Canada Hudson Hudson Bay |
geographic_facet |
Arctic Bay River Canada Hudson Hudson Bay |
genre |
Arctic Climate change Hudson Bay James Bay |
genre_facet |
Arctic Climate change Hudson Bay James Bay |
op_relation |
Déry SJ, Stadnyk TA, MacDonald MK, Koenig KA, Guay C. Flow alteration impacts on Hudson Bay river discharge. Hydrological Processes. 2018;1–12. https://doi.org/10.1002/hyp.13285 http://hdl.handle.net/1993/34770 https://doi.org/10.1002/hyp.13285 |
op_rights |
open access |
op_doi |
https://doi.org/10.1002/hyp.13285 |
container_title |
Hydrological Processes |
container_volume |
32 |
container_issue |
24 |
container_start_page |
3576 |
op_container_end_page |
3587 |
_version_ |
1769004239418294272 |