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TitleReconstitution de l'amplitude des crues printanières passées dans le bassin versant de La Grande Rivière
DownloadDownload (whole publication)
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorBoucher, É; Lemay, M; Bégin, Y
SourceUtilisation des archives naturelles pour la reconstitution du passé hydro-climatique; by Bégin, C; Nicault, A; Bégin, Y; Geological Survey of Canada, Open File 8768, 2021 p. 122-129, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedThis publication is contained in Utilisation des archives naturelles pour la reconstitution du passé hydro-climatique
File formatpdf
NTS23; 24; 33; 34
AreaComplexe La Grande; La Grande Rivière; Rivière Nécopastic; Lac de la Corvette; Lac Montausier
Lat/Long WENS -80.0000 -68.0000 57.0000 52.0000
Subjectsenvironmental geology; hydrogeology; Nature and Environment; Science and Technology; climatology; paleoclimatology; hydrologic environment; watersheds; floods; surface waters; rivers; lakes; flood plains; ice; Le projet ARCHIVES; Climate change; Hydrology; Boreal ecosystems; Forests; Trees; Phanerozoic; Cenozoic; Quaternary
Illustrationslocation maps; time series; bar graphs; plots; photographs
ProgramClimate Change Geoscience Extreme Events
Released2021 06 28
AbstractTrees located in riparian landscapes of boreal hydrosystems are directly exposed to spring floods. Injuries inflicted to these stems during floods (often carrying ice blocks or ice rafts) evolve under the form of scars that can be dated by dendrochronology. The retrospective analysis of the frequency and height of these injuries can inform on the seasonality, intensity, and frequency of past high water levels. However, depending on the environment in which these scars are found, different informations on hydrograph properties may be retrieved. Along rivers, trees located on flood-plains tend to be scarred during sudden early spring floods often associated with ice-jamming events. In lacustrine environments, scar chronologies describe sequences of high water levels, which bring ice rafts in contact with riparian trees. Such discrete observations represent direct evidence of past hydrological events in cold-region rivers, and can be used jointly with other proxies to constrain hydro-climatic reconstructions.
Summary(Plain Language Summary, not published)
The main objective of the ARCHIVES project was to develop a new methodological approach aiming at reconstituting the long-term natural variability of hydro-climatic parameters used in the modeling of water inflows in basins of interest for hydroelectric production in Quebec. At the end of the project, hydropower resource managers and authorities concerned about climate change can benefit from a better understanding of the evolution in time and space of hydro-climatic conditions that will facilitate the development of appropriate hydrological scenarios for this region that is sensitive in many ways to climate change. This document presents a synthesis of the results produced by the multidisciplinary team of this five-year project, which took place over the entire boreal zone of Quebec and part of Labrador. This synthesis is structured in 21 chapters grouped in three distinct parts. The first part is divided into five chapters presenting fundamental concepts and prerequisites for reading the other sections of the document. The second part, which includes seven chapters, presents the treatment and meaning of the indicators used in the project. Finally, the nine chapters of the third part of the document present a retrospective analysis of the hydro-climate over the last centuries, or even millennia depending on the indicators.

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