Changeset: 120812871
Moving the eastern end of the Nunavut/Northwest Territories border closer to where the the 2015 Canada Lands survey shows the intersection of the northerly bank of the Kugalak River and the shoreline of (OHWM) of Penny Bay.
Closed by MapGrid
Tags
created_by | JOSM/1.5 (18427 en) |
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source | Canada Lands 105816 CLSR NT |
Discussion
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Comment from MapGrid
In 1984 the Inuvialuit Final Agreement adopted the intersection of the northerly bank of the Kugalak River and the shoreline of Penny Bay in its definition of the Holman 7(1)(b) parcel at the western end of the Wollaston Peninsula on Victoria Island.
The Nunavut Act of 1993 adopted part of the Holman 7(1)(b) boundary as part of western border of Nunavut.
Thus the Nunavut Act includes the words: "thence easterly in a straight line to the intersection of the northerly bank of Kugalak River and the shoreline of Penny Bay in Amundsen Gulf".Between 1984 and 2015, erosion caused the mouth of the river to move about 1500m south; this is evident when comparing old and new satellite imagery.
In 2015 the federal government paid for a legal survey of the riverbank. Searches show this was the first legal survey that includes the intersection of the river and the shoreline.
The resulting survey plan (105816 CLSR NT) includes a small arrow and the words: "INTERSECTION OF THE NORTHERLY BANK OF KUGALUK RIVER AND THE SHORELINE (OHWM) of PENNY BAY".
The survey includes 36 GPS readings along the northern bank of the river, but unfortunately the spot marked by the arrow was determined from Satellite imagery instead of GPS; so no precise coordinates are provided for the intersection.Based on features shown on the survey plan, it is possible to determine the location of the arrow with an accuracy of about 10m. If we believe current ERSI imagery, the spot marked by the arrow is now under water due to erosion.
It is not clear if the current boundary should be based on the 2015 survey or if it should move with the river. I expect it would take a team of lawyers to figure that out.
Also keep in mind the river will overflow its banks at certain times of the year causing parts of the coast and the islands in Penny Bay to become submerged.In this changeset I have redrawn the entire marine boundary from mainland Canada to the Kugalak River. The eastern termination point is within about 20m of the spot marked by the arrow on the 2015 survey plan. The nodes are plotted on a geodesic line which gives the marine boundary a slight curve when viewed on a Mercator map.
Ways (7)
- NT-NU (384933031), v9
- NT-NU (761494805), v5
- 1058680559, v4
- NT-NU (1058700710), v4
770516701, v4770517674, v31058700711, v3
Relations (9)
- ᓄᓇᕗᑦ Nunavut (390840), v197
- Northwest Territories (391220), v103
- America/Cambridge_Bay Timezone (6446170), v32
- Inuvialuit Settlement Region (8309397), v66
- ᕿᑎᕐᒥᐅᑦ Kitikmeot Region (9486614), v37
- Inuvik Region (9493216), v39
- America/Inuvik Timezone (10553994), v32
- America/Yellowknife Timezone (10553995), v71
- Nunakput (13423696), v6
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