Crossref journal-article
Wiley
Regulated Rivers: Research & Management (311)
Abstract

AbstractConstruction of the La Grande Complex in Eastern Canada called for complete or partial diversion of six rivers, the mean annual discharge of which varied from 60 to 1600 m3 s−1, and the transfer of water from two adjoining watersheds (1586m3 s−1) into La Grande Rivière. Three of these rivers with reduced flow, Eastmain (from 700 to 95m3 s−1), Opinaca (from 260 to 35m3 s−1), and Caniapiscau (from 1708 to 960m3 s−1) and the waterways with increased flows, Boyd‐Sakami (from 1 to 811m3 s−1) and La Grande Rivière (from 1760 to 3400m3 s−1) were intensively monitored from 1978 to 1988, while the others were surveyed sporadically. Very few modifications were observed, compared to previous conditions, in banks stability, water quality, and aquatic fauna of the affected rivers: those which appeared can be explained by the water level fluctuations, the water quality of the tributaries of the residual drainage basin, and/or by the direct influence of the reservoirs. In James Bay, the areal extent of the Eastmain River and La Grand Rivière plumes varied with discharge in an exponential relation, mostly under ice cover; resources from the coastal environment had not yet undergone any major changes. Because of the very small population dwelling in the area, less than 3000 inhabitants, modifications in the hydrological regime of these rivers did cause relatively few impacts, the main being greater banks instability in specific locations, reduction of the thickness and ice cover on La Grande Rivière, enhancement of navigation constraints on Eastmain River, and higher mercury levels in fish related to operation of the reservoirs.

Bibliography

Roy, D., & Messier, D. (1989). A review of the effects of water transfers in the La Grande Hydroelectric Complex (Québec, Canada). Regulated Rivers: Research & Management, 4(3), 299–316. Portico.

Authors 2
  1. Dominique Roy (first)
  2. Danielle Messier (additional)
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Dates
Type When
Created 18 years, 6 months ago (Feb. 5, 2007, 7:45 p.m.)
Deposited 1 year, 11 months ago (Sept. 27, 2023, 5:02 a.m.)
Indexed 1 month, 3 weeks ago (July 7, 2025, 7:25 a.m.)
Issued 35 years, 11 months ago (Sept. 1, 1989)
Published 35 years, 11 months ago (Sept. 1, 1989)
Published Online 18 years, 10 months ago (Oct. 12, 2006)
Published Print 35 years, 11 months ago (Sept. 1, 1989)
Funders 0

None

@article{Roy_1989, title={A review of the effects of water transfers in the La Grande Hydroelectric Complex (Québec, Canada)}, volume={4}, ISSN={1099-1646}, url={http://dx.doi.org/10.1002/rrr.3450040308}, DOI={10.1002/rrr.3450040308}, number={3}, journal={Regulated Rivers: Research & Management}, publisher={Wiley}, author={Roy, Dominique and Messier, Danielle}, year={1989}, month=sep, pages={299–316} }