Flow alteration impacts on Hudson Bay river discharge

Simple item page
dc.contributor.authorDery, Stephen J.
dc.contributor.authorStadnyk, Tricia A.
dc.contributor.authorMacDonald, Matthew K.
dc.contributor.authorKoenig, Kristina A.
dc.contributor.authorGuay, Catherine
dc.date.accessioned2020-07-10T16:55:49Z
dc.date.available2020-07-10T16:55:49Z
dc.date.issued2018-09-22
dc.date.submitted2020-07-10T16:55:49Zen_US
dc.description.abstractThis 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.en_US
dc.identifier.citationDéry 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.13285en_US
dc.identifier.doihttps://doi.org/10.1002/hyp.13285
dc.identifier.urihttp://hdl.handle.net/1993/34770
dc.language.isoengen_US
dc.publisherJohn Wiley and Sons, Ltden_US
dc.rightsopen accessen_US
dc.subjectClimate Changeen_US
dc.subjectflow regulationen_US
dc.subjectHudson Bayen_US
dc.subjectJames Bayen_US
dc.subjectHydropoweren_US
dc.subjectpan-Arctic river dischargeen_US
dc.subjectstreamflowen_US
dc.subjectwater resourcesen_US
dc.titleFlow alteration impacts on Hudson Bay river dischargeen_US
dc.typeTechnical Reporten_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
dery-et-al.-2018.pdf
Size:
983.83 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed to upon submission
Description:
Download
Collections
Research Documents and Reports