Environmental Impact of Flooding in the Main (Smallwood) Reservoir of the Churchill Falls Power Plant, Labrador, Canada. I. Background and Descriptions of Flooded Conditions Related to Vegetation and Land Cover Types
Denes Bajzak, Bruce A. Roberts
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DOI: 10.4236/jwarp.2011.33018   PDF    HTML     6,657 Downloads   11,627 Views   Citations

Abstract

This paper, the first in a series provides the background of the project, reports on the early phases of construction with the descriptions of the pre and post flooded conditions related to vegetation and land cover types surrounding the reservoir. Currently there are plans to develop the so called “Lower Churchill Area” by establishing new power plants at Gull Island and at Muskrat Falls with associated reservoirs. These new plants would use the discharged water of the plant from Churchill Falls and the additional water collected from some of the Churchill River Basin. The information provided by these papers could have relevance to the environmental evaluation of these new developments. The Churchill Falls Hydro Project (called the “Upper Churchill Development”) in Labrador, Canada, was initiated in the late 1960s and the 5428-MW hydro generating plant constructed was then among the largest in the world. At that time, in general, not much attention was paid to the impact of such development on the flooding of vegetation especially forest stands. Both forested and un-forested terrestrial vegetation types were flooded (244 915 ha). Some islands were created and in addition portions of existing areas were flooded to form islands (74 075 ha) in the Main (Smallwood) Reservoir area. The flooded area of forest and un-forested land in the reservoir is 77% while the islands is 23 percent. The percentages of forested and un-forested areas lost to flooding are 64% and 36% respectively. The percent of commercial forests lost to flooding is approximately 1% and the non-commerci- al forests is 99% (with a total volume of approximately 10 million cubic meters of wood).

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D. Bajzak and B. Roberts, "Environmental Impact of Flooding in the Main (Smallwood) Reservoir of the Churchill Falls Power Plant, Labrador, Canada. I. Background and Descriptions of Flooded Conditions Related to Vegetation and Land Cover Types," Journal of Water Resource and Protection, Vol. 3 No. 3, 2011, pp. 147-152. doi: 10.4236/jwarp.2011.33018.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1] E. L. Oberg, “Man Made Lakes - the Accra Symposium,” Ghana University Press, Accra, 1969, p. 397.
[2] “Symposium on Man Made Lakes,” (Abstracts of Papers), Scientific Committee on Water Resources, Knoxville, 1971, p. 229.
[3] H. C. Duthie and M. L. Ostrofsky, “Plankton Chemistry, and Physics of the Lakes in the Churchill Falls Region of Labrador,” Journal of the Fisheries Research Board of Canada, Vol. 31, 1974, pp. 1105-1117.
[4] H. C. Duthie and M. L. Ostrofsky, “Environmental Impact of the Churchill Falls (Labrador) Hydro Electric Project - a Preliminary Assessment,” Journal of the Fisheries Research Board of Canada, Vol. 32, No. 2, 1975, pp. 117-125.
[5] M. L. Ostrofsky and H. C. Duthie, “An Approach to Modelling-Productivity in Reservoirs (Man Made Lakes),” Verhandlungen des Internationalen Verein Lim-nologie, Vol. 20, 1978, pp. 1562-1567.
[6] D. Bajzak, “Vegetation Classification and Mapping in the Main Reservoir of the Churchill Falls Hydro Electric Power Plant,” Report Submitted to [CF(L)Co]., Faculty of Engineering and Applied Science Memorial University of Newfoundland, St. John’s, NF, 1971, p. 46.
[7] A. A. Bruneau and D. Bajzak, “Effect of Flooding on Vegetation in the Main Reservoir, Churchill Falls, Labrador,” Project Establishment Report, Faculty of Engineering and Applied Science Memorial University of Newfoundland, St. John’s, NF, 1973, p. 27.
[8] A. A. Bruneau and D. Bajzak, “Effect of Flooding on Vegetation in the Main Reservoir, Churchill Falls, Labrador,” Progress Report, Faculty of Engineering and Applied Science Memorial University of Newfoundland, St. John’s, NF, 1975, p. 77.
[9] Water Resources Division, “Water Resources Atlas of Newfoundland,” Department of Environment and Lands Government of Newfoundland and Labrador, St. John’s, NL. 1992, p. 79.
[10] D. Bajzak and B. A. Roberts, “Determination of Snow-Water Equivalent (SWE) Using Multi-Channel, Multi-Polarized, Multi-Temporal Synthetic Aperture R- ADAR (SAR),” Proceedings International Archives of Photogrammetry and Remote Sensing, Vienna, Vol. 21, part B7, 1996, pp. 36-42.
[11] D. Bajzak, B. A. Roberts and K. W. Deering, “Snow Hydrology Using Multy Channel, Multi-Polarized, Multi-Temporal Synthetic Aperture RADAR,” International Archives of Photogrammetry and Remote Sensing, Budapest, Vol. 32, part 7, 1998, pp. 662-667.
[12] Churchill Falls (Labrador) Corporation Ltd., “The Churchill Falls Power Development Management and Construction Equipment”, Information Pamphlet (Paper Presented to the Earth Moving Industry Conference of the Society of Automotive Engineers, Central Illinois Section), Montreal, PQ, undated, p. 23.
[13] J. S. Rowe, “Forest Regions of Canada,” Environment Canada, No. 1300, 1972, p. 172.
[14] Ecological Stratification Working Group (ESWG), “A National Ecological Framework for Canada,” Research Branch Agriculture and Agri-Food Canada, Analysis Branch Centre for Land and State of the Environment Directorate Canada, Ottawa-Hull, 1995, p. 125.
[15] W. J. Meades and B. A. Roberts, “Review of Forest Site Classification Activities in Newfoundland and Labrador,” The Forestry Chronicle, Vol. 20, No. 1, February 1992, pp. 25-33.
[16] W. C. Wilton, “The Forests of Labrador,” Canada Department of Forestry, Ottawa, Publication No. 1066, 1965, p. 72.
[17] I. Hustich, “On the Forest Geography of the Labrador Peninsula,” Acta Geography, Vol. 10, No. 2, 1949, pp. 2-63.
[18] D. S. Lacate, “Guidelines for Bio-Physical Land Cla- ssification,” Canadian Forest Service Canada Department of Fisheries and Forestry, Ottawa, Publication No. 1264, 1969, p. 61.
[19] D. Bajzak, “Bio-Physical Land Classification, Labrador,” Internal Report, Forest Research Branch Laboratory Canada Department of Forestry, St. John’s, NF, No. 16, 1969, p. 12.
[20] D. Bajzak, “Bio-Physical Land Classification of the Lake Melville Area, Labrador,” Information Report, Newfoundland Forest Research Centre Canadian Forest Ser- vice, St’ John’s, NF, NX-88, 1973, p. 115.
[21] D. Bajzak and B. A. Roberts, “Mapping Land Types for Forest Evaluation in the Lake Melville Area, Labrador, Canada,” Extended Abstracts of the First IUFRO Workshop on Quantitative Assessment of Forest Sites with Special Reference to Soils, Swiss Federal Institute of Forest Research, Birmensdorf, 1985, pp. 4-5.
[22] D. Bajzak and B. A. Roberts, “Development of Ecological Land Classification and Mapping in Support of Forest Management in Northern Newfoundland, Canada,” Journal of Environmental Monitoring and Assessment, Vol. 39, No. 1-3, 1996. pp. 199-213. doi:10.1007/BF00396145
[23] B. A. Roberts, D. Bajzak, K. W. Deering and E. F. Woodrow, “Ecological Land Classification in Support of Eco-System Management in Newfoundland. Forest Scenario Modelling for Eco-System management at Landscape Level,” G. J. Nabuurs, T. Nuutinen, H. Bartelink and M. Korhonen, Eds., EFI Proceedings, European Forest Institute, Wageningen, No. 19, 1998, pp. 305-311.
[24] B. A. Roberts, D. Bajzak, K. W. Deering and E. F. Woodrow, “Research and Training in Forest Land Classification in Support of Ecosystem Management in Newfoundland,” Paper Presented at ASPRS-RTI Annual Conference, Tampa, 1998, pp. 855-859.
[25] B. A. Roberts, N. P. P. Simon and K. W. Deering, “The Forests and Woodlands of Labrador, Canada-Ecology, Distribution and Future Management,” Ecological Research, Vol. 21, No. 6, 2006, pp. 868-880. doi:10.1007/s11284-006-0051-7
[26] D. G. Vanderveer, “The Surficial and Glacial Geology of Michikamau Lake, Central Labrador,” Final Report Newfoundland ERTS Project, Memorial University of Newfoundland, St. John’s, NF, 1973, pp. 26-41.
[27] B. A. Roberts and K. W. Deering, with contributions from D. Bajzak, V. Courtois, R. Parsons, N. P. Simon and A. R. van Kesteren, “Nitassinan (Labrador) Forest Ecology, Biodiversity Assessment and Cultural Study,” Paper Presented at Climate Change Impacts on Boreal Forest, VI International Conference Fairbanks (Program and Abstracts), 2007, p. 38.
[28] Newfoundland Forest Service, “Forest Inventory Statistics, Labrador,” Department of Forestry and Agriculture Government of Newfoundland, St. John’s, NF, 1975, p. 61.

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