The Liard River (1,115km (693 miles)) rises in the southeast of Yukon and flows into the Mackenzie River from the west at Fort Simpson.
Most of the Mackenzie River flows through the Malpigu Lowland, which is about 400 kilometers wide near Simpson Fort. On the west side of Mackenzie Valley is the steep Mackenzie Mountain Range, which is as high as 1, 500 ㄢ, 800 meters.
To the north of Simpson Fort, the Mackenzie River is slightly lower than the altitude 120m, with a width of 1.6km and steep banks. The average annual flow near Simpson Fort is 6760 cubic meters per second (239000 cubic feet per second); In summer (May), the average monthly discharge during high water level period is10330m3/s; The amount of water in the Liard River is about the same as that in the upper reaches of the Mackenzie River. In winter, the latter accounts for a large proportion of water. In the north of Wrigley Trading Station, the Hongshi River and Kiel River flow into each other from the west. These two rivers flow through the Mackenzie Mountains with deep valleys, and when they flow through lowlands, they are reticulate shallow rivers. Rivers from the Mackenzie Mountains have the largest flow when snow melts in the mountains in June, and become shallow rivers in late summer. The average summer precipitation measured in low-lying and sparse settlements is only about 175 mm (78 inches), and the Mackenzie River has almost no flow here. The annual precipitation in Mackenzie Valley is 254,356 mm. ..
The cold water of the Bell River flows from the east of Norman Fort Village. This short river flows through Daxiong Lake. Except for a short section near the turbulence about 48 kilometers east of the estuary, ships with shallow draft can sail. In Norman Wells, the river widens to about 6 kilometers and the elevation is less than 53 meters. The average flow here is 8547 cubic meters per second, and the average flow in summer months often reaches 130 18 cubic meters per second.
The mountains and rivers flow from the west bank to Sans Sault Rapids in mackenzie river, and drop about 6 meters in just a few miles. In the south of the Indian village of Cape of Good Hope, the river narrows and is surrounded by limestone cliffs called barriers, which are 3046 meters high. The river runs through the Arctic Circle north of Fort Wang Hao. The riverbed here is shallow and flat, and the distance between the two banks is about 34 kilometers. There are many low islands in the winding river, and moving sandbars are a problem for small boats sailing on the river. The Arctic Red River flows in from the south, and the river flows between cliffs with a height of 306 1 m.. Starting from the confluence of several small rivers flowing out of Pisi River and Athabasca Lake, it flows northward for 465,438+05 km, and then flows into Danu Lake near Hot Solushenburg. The main tributaries of Nujiang River are Murdock River, Dog River and Salter River.
Danu Lake covers an area of 28,567 square kilometers, and its deepest point is 6 14 meters. The water at the eastern end is clear and the water at the western end is shallow and turbid. The freezing period lasts for more than 9 months every year, and the middle of the lake can only be thawed in mid-June every year. During the thawing period, ice dams often form, resulting in frequent floods. There are the following great rivers in Great Anger Lake: Tasson River, Yelonev River, Hay River, Buffalo River and Little Buffalo River. After leaving Niuda Lake, the main stream of Mackenzie River is 9.7 kilometers wide, and there is a big island and several small islands in the middle of the river. The river flows westward, passes through Mills shallow lake, and forms a green island jet at 19 km east of Simpson Fort. It rises in Mount St. Paley in Yukon, Canada, flows southeast into British Columbia, then turns northeast, and flows into Mackenzie River at Fort Simpson. The total length of the Liard River is1115km, with a drainage area of 277,000km2. There are many turbulent canyons in the upper reaches, and the boat can go from Simpson Fort to Liadburg in the lower reaches. After the muddy Liard River meets the clear Mackenzie River, the river is completely distinct at the intersection of the two rivers, and it does not disappear until 483 kilometers downstream. Its main tributaries are: Frances River, Duces River, Highland River, Ketchika River, Cole River, Biffler River, Nelson Fort River, Petite River and Nannahani River.
To the north of Fort Simpson, the Mackenzie River is less than 122 meters above sea level and 1.6 kilometers wide. There are cliffs on both sides, and the Hongshi River and Kiel River converge to Wrigley from both sides. From Wrigley, it flows into the Daxiong River from the Daxiong Lake in Norman Fort Village. The total length of Daxiong River is only 1 12.7 km, and it flows through the swamp from the west bank of Daxiong Lake to the Mackenzie River. It is an important traffic artery between mackenzie river and Daxiong Lake. Bear Lake is the largest lake in Mackenzie River and Canada. It straddles the Arctic Circle and has an irregular shape. There are many small islands in the lake. It is about 322 kilometers long, 49 ~ 180 kilometers wide, with an area of 3 1328 square kilometers and a maximum depth of 4 13 meters. It is the fourth largest lake in North America. The lake is cold, clear and full of fish.
From Fort Norman to the north, the Monton River meets the mainstream, forming the Sansut rapids. North of the Castle of the Cape of Good Hope, the river flows into the Arctic Circle. In the Arctic Circle, the Red River flows from the south to the mainstream. After that, the river passes through a steep cliff canyon 30-60 meters high. At a place called "Bifurcation Point", it enters the estuary delta of mackenzie river, which is193km long from north to south and 80km wide from east to west, with lakes all over the delta. The basin produces salmon, white fish and lake trout, as well as fur animals such as muskrats, lynxes, minks and beavers. Most local Indians made a living by fishing and hunting, and fur trade played an important role in the early economy. Water power and forest resources are abundant, but they have not been fully developed and utilized. The main mineral resources are oil in the downstream and delta areas, radium and uranium in Daxiong Lake and Athabasca Lake, and lead, zinc and gold in Danu Lake. Mackenzie river River System is an important route connecting northern and southern Canada. The gondola can be traced back to Fort McMurray on the athabasca River from the estuary, with a total length of 2,736 kilometers, and the goods frequently run during the river thawing period from June to 65438+ 10. The population in the basin is sparse, and the main settlements are mostly distributed along rivers and lakes. Larger ones are Yellowknife (the capital and gold-producing center of northwest Canada), Simpson Fort (fur trade center), Norman Wells (oil center) and Inuvik (administrative center of Mackenzie District). 1789, the British explorer alexander mackenzie set out from Fort Chipwin in the west of Lake Athabasca and went north along the river to explore the river for the first time.