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The Ivishak River / ˈ iː v iː ʃ ɑː k / is a 95-mile (153 km) tributary of the Sagavanirktok River in the North Slope Borough of the U.S. state of Alaska. [1] Fed by glaciers at the headwaters, the Ivishak flows northeast, then northwest, through the Philip Smith Mountains and the northern foothills of the Arctic National Wildlife Refuge.
According to the Köppen climate classification system, Kobuk Valley National Park has a Subarctic climate (Dfc) with cool summers and year around precipitation. Dfc climates are defined by their coldest month averaging below 0 °C (32 °F), 1–3 months averaging above 10 °C (50 °F), all months with average temperatures below 22 °C (71.6 °F), and no significant precipitation difference ...
Land mammals that roam this refuge include brown bears, red foxes, wolves, and caribou from the Southern Alaska Peninsula herd. Marine mammals are common in the productive waters surrounding this refuge. Harbor seals, Steller's sea lions, and sea otters and even walrus inhabit nearby coastal waters and lagoons. Harbor seals frequently haul out ...
Changes in caribou migration can be problematic for Alaska Natives, who depend on caribou for food. [16] Caribou in Alaska are abundant; currently there are an estimated 950,000 in the state. [16] The populations of caribou are controlled by predators and hunters (who shoot about 22,000 caribou a year). [16]
Pages in category "Rivers of North Slope Borough, Alaska" The following 56 pages are in this category, out of 56 total. This list may not reflect recent changes .
The potential oil drilling in the Arctic National Wildlife Refuge threatens the Porcupine caribou herd's calving grounds, while climate change forces polar bears to change their hunting and denning patterns. Additionally, the unique marine ecosystem of the Arctic basin is being disturbed by industrial noise and oil exploration.
In Alaska, the Western Arctic Caribou herd (490,000 strong in 2004) traverses the Brooks Range in its annual migration. The smaller Central Arctic herd (32,000 in 2002), as well as the 123,000 animal Porcupine Caribou herd, likewise migrate through the Brooks range on their annual journeys in and out of the Arctic National Wildlife Refuge. The ...
Feather River (Alaska) Firth River; Fish Creek (Douglas Island, Juneau, Alaska) Fish River (Alaska) Flambeau River (Alaska) Foraker River; Fortymile River; Fourth of July Creek (Kenai Peninsula, Alaska) Fox River (Alaska) Fox River (Fish River tributary)