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@wyman10.bsky.socialOct 14, 2026, 2:39 PM

Lots of unique #maps in #pipeline #investigations

#MackenzieValley pipe line terrain investigation 1970
archive.org/details/mack...

Upper #Mackenzie Region
- Surface #Water #Hydrology
- #Fisheries
- #Trapping
Mackenzie #Delta Region
- Non Renewable #Resources
#ClimateChange

Mackenzie Valley pipe line terrain investigation. Published 1970. Upper Mackenzie Region - Surface Water Hydrology Legend Shows: H - River stage or depth D - River discharge or flow Q - Water quality SI - Sediment load Sc Suspended sediment (chemistry) B Bank material (chemistry) ● Indicates Mackenzie River ■ Water data - Fisheries Riverbank Stability Low sensitivity - gentle slope Moderate sensitivity - slope 15°-35° High sensitivity - slope over 35° Mean breakup date of river ice Mean date water clear of ice Probable ice jam Mackenzie Valley pipe line terrain investigation. Published 1970. Mackenzie Delta Region - Non Renewable Resources Legend Shows: Granular Material 1 Good to excellent material 2 Fair material 3 Suitable quarry bedrock Extrapolated gravel deposits Deposit boundary Environmentally sensitive deposit Gas wells Oil wells Pb Lead deposit Zn Zinc deposit Ag Sliver deposit C-8 Coal deposit - depth of seam Mackenzie Valley pipe line terrain investigation. Published 1970. Upper Mackenzie Region - Fisheries Legend Shows: Commercial fishing Domestic fishing Sport fishing Primary migration route Important aquatic ecosystem Critical aquatic ecosystem Limited data [Number] refer to reference key S - Spring spawning route F - Fall spawning route 1 Spawning - 1 May - 30 June 10 Aug. - 15 Nov. 2 Overwintering areas 3 Nursery areas 4 Feeding areasMackenzie Valley pipe line terrain investigation. Published 1970. Upper Mackenzie Region. Legend Shows active Traplines in 1972 and registered trapping areas A Alberta communities F Fort Laird P For Providence S Fort Simpson H Hay River J Jean Marie River K Kakisq River B Nahanni Butte T Trout Lake W Wrigley