Editing James Bay Project (section)

== Geography ==
{{Main|Canadian Shield}}
The James Bay region, also known as [[Jamésie, Quebec|Jamésie]], is a {{convert|350000|km2|sqmi|0|abbr=on}} territory, bordered by the 49th and 55th parallels, James Bay on the western side and by the drainage divide with the Saint Lawrence River basin on the eastern side.<ref name="SEBJ1987p4">{{harvnb|Société d'énergie de la Baie James|1987|p=4}}</ref> The topography of the area consist of generally low relief areas and includes three parts: a {{convert|150|km|mi|abbr=on}} [[coastal plain]], a rolling [[plateau]] with a maximum elevation of {{convert|400|m|ft|abbr=on}}<ref name="SEBJ1987p4"/> and the [[Otish Mountains]] to the east of the territory, with peaks reaching {{nowrap|900 to 1,100 m}} {{nowrap|(3,000 to 3,600 ft)}}.<ref name="SEBJ1987p18">{{harvnb|Société d'énergie de la Baie James|1987|p=18}}</ref>

The area is part of the [[Canadian Shield]] and is largely made up of [[Precambrian]] [[igneous rock|igneous]] and [[metamorphic rock]]s. Relief has been [[erosion|eroded]] by [[Quaternary glaciation|successive glaciations]] in the [[Pleistocene]] era, as recently as 6,000 years ago, leaving [[Deposition (geology)|depositions]] of loose materials: [[moraines]], [[clay]], [[silt]] and [[sand]] and reshaped the [[Drainage system (geomorphology)|hydrography]] of the territory.<ref name="SEBJ1987p4"/>

The region's [[subarctic climate|climate is subarctic]]. Winters are long and last, on average, from October 22 to May 4.<ref name="SEBJ1987p21">{{harvnb|Société d'énergie de la Baie James|1987|p=21}}</ref> Summers are short and mild, with temperatures averaging {{convert|13.6|C|F|abbr=on}} in July, while dropping to {{convert|-22.9|C|F|abbr=on}} in January. Annual precipitation averages {{convert|765|mm|in|abbr=on}}, a third in snow. Highest monthly rainfall is registered in the summer and snow depths vary from {{nowrap|50 to 100 cm}} {{nowrap|(20-40 in)}} in the winter. Precipitations are significantly lower than the annual average of {{convert|1050|mm|in|abbr=on}} recorded in Montreal.<ref name="SEBJ1987p4"/> The area lies in the zone of [[discontinuous permafrost]], whose depth is significantly reduced by the deep snow cover.

The natural [[seismicity]] of the area is low. An [[earthquake]] of magnitude 5 on the [[Richter magnitude scale]] occurred in 1941, its epicenter located approximately 150&nbsp;km from the La Grande-3 generating station. However, episodes of [[induced seismicity]] occurred during the initial fill of [[reservoir]]s. In 1983, a magnitude 4 tremor was recorded {{convert|50|km|mi|abbr=on}} upstream of LG-3's main dam.<ref name="SEBJ1987p21"/>

{{Weather box
|location = La Grande Riviere Airport (1981−2010)
|metric first = Y
|single line = Y
|Jan maximum humidex = 1.8
|Feb maximum humidex = 4.8
|Mar maximum humidex = 11.1
|Apr maximum humidex = 21.8
|May maximum humidex = 33.9
|Jun maximum humidex = 37.5
|Jul maximum humidex = 44.3
|Aug maximum humidex = 35.5
|Sep maximum humidex = 31.6
|Oct maximum humidex = 28.3
|Nov maximum humidex = 11.7
|Dec maximum humidex = 7.6
|year maximum humidex = 44.3
|Jan record high C = 1.4
|Feb record high C = 5.0
|Mar record high C = 11.3
|Apr record high C = 22.3
|May record high C = 32.6
|Jun record high C = 35.0
|Jul record high C = 37.3
|Aug record high C = 31.2
|Sep record high C = 27.1
|Oct record high C = 23.5
|Nov record high C = 12.3
|Dec record high C = 7.4
|year record high C = 37.3
|Jan high C = -18.5
|Feb high C = -15.9
|Mar high C = -8.2
|Apr high C = 0.6
|May high C = 10.3
|Jun high C = 17.3
|Jul high C = 20.4
|Aug high C = 18.6
|Sep high C = 12.3
|Oct high C = 4.8
|Nov high C = -3.1
|Dec high C = -12.0
|year high C = 2.2
|Jan mean C = −23.2
|Feb mean C = −21.6
|Mar mean C = −14.5
|Apr mean C = -5.0
|May mean C = 4.3
|Jun mean C = 10.8
|Jul mean C = 14.2
|Aug mean C = 13.1
|Sep mean C = 8.1
|Oct mean C = 1.7
|Nov mean C = -6.1
|Dec mean C = -16.0
|year mean C = -2.9
|Jan low C = -28.0
|Feb low C = -27.3
|Mar low C = -20.7
|Apr low C = -10.6
|May low C = -1.6
|Jun low C = 4.2
|Jul low C = 8.0
|Aug low C = 7.6
|Sep low C = 3.8
|Oct low C = -1.5
|Nov low C = -9.1
|Dec low C = -19.9
|year low C = -7.9
|Jan record low C = -40.9
|Feb record low C = -44.6
|Mar record low C = -39.7
|Apr record low C = -31.4
|May record low C = -14.4
|Jun record low C = -6.6
|Jul record low C = -0.9
|Aug record low C = -0.5
|Sep record low C = -7.0
|Oct record low C = -16.7
|Nov record low C = -29.2
|Dec record low C = -40.3
|year record low C = -44.6
|Jan chill = −56.0
|Feb chill = −56.9
|Mar chill = −51.2
|Apr chill = −40.1
|May chill = −24.2
|Jun chill = −12.5
|Jul chill = -3.4
|Aug chill = -6.5
|Sep chill = −10.3
|Oct chill = −19.7
|Nov chill = −40.3
|Dec chill = −52.9
|year chill = -56.9
|precipitation colour = green
|Jan precipitation mm = 30.9
|Feb precipitation mm = 21.9
|Mar precipitation mm = 29.4
|Apr precipitation mm = 32.7
|May precipitation mm = 39.0
|Jun precipitation mm = 65.3
|Jul precipitation mm = 78.5
|Aug precipitation mm = 91.1
|Sep precipitation mm = 110.6
|Oct precipitation mm = 87.3
|Nov precipitation mm = 67.9
|Dec precipitation mm = 42.6
|year precipitation mm = 697.2
|rain colour = green
|Jan rain mm = 0.1
|Feb rain mm = 1.2
|Mar rain mm = 3.4
|Apr rain mm = 12.7
|May rain mm = 27.9
|Jun rain mm = 62.6
|Jul rain mm = 78.5
|Aug rain mm = 91.0
|Sep rain mm = 106.9
|Oct rain mm = 56.2
|Nov rain mm = 11.6
|Dec rain mm = 1.7
|year rain mm = 453.8
|Jan snow cm = 33.1
|Feb snow cm = 23.0
|Mar snow cm = 28.6
|Apr snow cm = 21.0
|May snow cm = 11.9
|Jun snow cm = 2.6
|Jul snow cm = 0.01
|Aug snow cm = 0.09
|Sep snow cm = 4.0
|Oct snow cm = 32.4
|Nov snow cm = 60.3
|Dec snow cm = 44.4
|year snow cm = 261.3
|unit precipitation days = 0.2 mm
|unit rain days = 0.2 mm
|unit snow days = 0.2 cm
|Jan precipitation days = 16.3
|Feb precipitation days = 12.5
|Mar precipitation days = 11.9
|Apr precipitation days = 10.8
|May precipitation days = 12.1
|Jun precipitation days = 12.4
|Jul precipitation days = 14.1
|Aug precipitation days = 16.2
|Sep precipitation days = 20.2
|Oct precipitation days = 20.6
|Nov precipitation days = 22.0
|Dec precipitation days = 19.7
|year precipitation days = 188.9
|Jan rain days = 0.33
|Feb rain days = 0.67
|Mar rain days = 1.1
|Apr rain days = 4.0
|May rain days = 8.0
|Jun rain days = 11.6
|Jul rain days = 14.0
|Aug rain days = 16.2
|Sep rain days = 19.5
|Oct rain days = 12.7
|Nov rain days = 4.1
|Dec rain days = 0.84
|year rain days = 92.9
|Jan snow days = 16.4
|Feb snow days = 12.3
|Mar snow days = 11.5
|Apr snow days = 8.5
|May snow days = 5.7
|Jun snow days = 1.6
|Jul snow days = 0.04
|Aug snow days = 0.04
|Sep snow days = 1.9
|Oct snow days = 11.8
|Nov snow days = 20.5
|Dec snow days = 19.6
|year snow days = 109.8
|Jan sun = 76.5
|Feb sun = 114.0
|Mar sun = 167.2
|Apr sun = 197.7
|May sun = 226.6
|Jun sun = 256.3
|Jul sun = 247.0
|Aug sun = 204.5
|Sep sun = 102.8
|Oct sun = 69.7
|Nov sun = 37.8
|Dec sun = 35.5
|year sun = 1735.5
|Jan percentsun = 30.6
|Feb percentsun = 41.3
|Mar percentsun = 45.5
|Apr percentsun = 47.1
|May percentsun = 46.0
|Jun percentsun = 50.4
|Jul percentsun = 48.3
|Aug percentsun = 44.5
|Sep percentsun = 26.9
|Oct percentsun = 21.2
|Nov percentsun = 14.6
|Dec percentsun = 15.1
|year percentsun = 36.0
|source 1 = Environment Canada<ref name=CCN>{{cite web
  | url = ftp://ftp.tor.ec.gc.ca/Pub/Normals/English/
  | title = La Grande Riviere Airport
  | work = Canadian Climate Normals 1981–2010
  | publisher = Environment Canada
  | archive-url = https://web.archive.org/web/20200714071822/ftp://ftp.tor.ec.gc.ca/Pub/Normals/English/
  | archive-date = 2020-07-14
  | url-status = dead
  | access-date = September 10, 2013}}</ref>
|date=December 2010
}}

{{Weather box
|location = La Grande IV
|collapsed= yes
|metric first = yes
|single line = yes
|Jan high C = −18.1
|Feb high C = -17.5
|Mar high C = -8.0
|Apr high C = 1.3
|May high C = 9.8
|Jun high C = 17.0
|Jul high C = 20.0
|Aug high C = 18.2
|Sep high C = 11.0
|Oct high C = 3.7
|Nov high C = -4.3
|Dec high C = -13.2
|Jan mean C= −24.6
|Feb mean C= −24.4
|Mar mean C= -15.7
|Apr mean C= -5.1
|May mean C= 3.5
|Jun mean C= 10.2
|Jul mean C= 13.6
|Aug mean C= 12.4
|Sep mean C= 6.8
|Oct mean C= 0.5
|Nov mean C= -8.3
|Dec mean C= -18.9
|Jan low C = −31.1
|Feb low C = −31.3
|Mar low C = −23.4
|Apr low C = -11.5
|May low C = -2.7
|Jun low C = 3.3
|Jul low C = 7.1
|Aug low C = 6.5
|Sep low C = 2.5
|Oct low C = -2.8
|Nov low C = -12.4
|Dec low C = −24.6
|precipitation colour = green
|Jan precipitation mm = 30
|Feb precipitation mm = 26
|Mar precipitation mm = 28
|Apr precipitation mm = 38
|May precipitation mm = 55
|Jun precipitation mm = 80
|Jul precipitation mm = 98
|Aug precipitation mm = 101
|Sep precipitation mm = 133
|Oct precipitation mm = 88
|Nov precipitation mm = 61
|Dec precipitation mm = 44
|year precipitation mm =
|rain colour=green
|Jan rain mm = 0
|Feb rain mm = 0
|Mar rain mm = 2
|Apr rain mm = 16
|May rain mm = 45
|Jun rain mm = 79
|Jul rain mm = 98
|Aug rain mm = 101
|Sep rain mm = 123
|Oct rain mm = 43
|Nov rain mm = 10
|Dec rain mm = 1
|year rain mm =
|Jan snow cm = 35
|Feb snow cm = 28
|Mar snow cm = 29
|Apr snow cm = 23
|May snow cm = 10
|Jun snow cm = 1
|Jul snow cm = 0
|Aug snow cm = 0
|Sep snow cm = 9
|Oct snow cm = 46
|Nov snow cm = 58
|Dec snow cm = 53
|year snow cm =
|Jan sun = 84
|Feb sun = 128
|Mar sun = 167
|Apr sun = 184
|May sun = 208
|Jun sun = 221
|Jul sun = 209
|Aug sun = 183
|Sep sun = 89
|Oct sun = 54
|Nov sun = 41
|Dec sun = 54
|year sun =
|source 1 = The Weather Network.<ref name="climate">[http://www.theweathernetwork.com/statistics/cl7093gj3 Statistics: La Grande Iv A, Quebec, Canadaada], accessed 27 March 2012.</ref>
|date=March 2012
}}