A generalized reconstruction of Paleo-Bell River drainage and evolution of other major rivers in western and northern North America, after James Sears and others. By the Miocene, the Paleo-Bell River Basin reached its greatest extent. Rifts like the Rio Grande and Great Basin created an ancestral Colorado River that was yet to establish a course to the Pacific (location 1). Instead, it flowed north from the Grand Canyon region through structurally controlled valleys and into the larger Paleo-Bell River Basin via an ancestral Yellowstone River, whose gravels cap the Cypress Hills. This route was blocked by eruptions of lava in the Snake River Plain (location 2) associated with the Yellowstone Hot Spot. Repeated glaciation starting about 2.6 million years ago diverted north-flowing rivers like the Paleo-Yellowstone along ice sheet margins (location 3) to form the Missouri River. The ice sheets also disrupted the Paleo-Bell River Basin, causing river sedimentation to cease in the Saglek Basin. The Mackenzie River Basin was created, leaving the Saskatchewan/Nelson River Basin as the last remnant of North America’s Amazon. Credit: K. Cantner, AGI and Lionel Jackson, based on Sears, GSA Today, 2013.
Biggest dam removal ever! Klamath was largest salmon producer until dams interrupted reproduction cycles.
Map was created using the open-source QGIS software, and the high resolution prints are available on Etsy. It visualizes Strahler Stream Order Classification, the creator explains, with higher stream orders indicated as thicker lines.
By Cheyenne Macdonald and Mark Prigg For Dailymail.com
“One of the most memorable things we do around campfires is tell stories of our adventures. We want to hear your favorite river story. If you’re ready to share it, use the form below to add your story and an image. Have a video you want to share? Add the YouTube link.”
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The NDP convention considered the following motion:
2-06-13 Resolution to Reverse changes to Fish Habitat Protection, to Navigable Waters Protection, and to the Canadian Environmental Assessment Act
Submitted by Gaspésie-Iles-de-la-Madeleine, Dartmouth—Cole Harbour
WHEREAS, instead of strengthening habitat protection and environmental oversight, the Conservative government has: gutted the Fisheries Act and the Navigable Waters Protection Act; weakened the Canadian Environmental Assessment Act; cut funding for science and research; and continues to ignore the threats of climate change to Canada’s oceans; and
BE IT RESOLVED that New Democrats call on the Conservative Government to reverse changes to fish habitat protection, to Navigable Waters Protection, and to the Canadian Environmental Assessment Act;
BE IT FURTHER RESOLVED that the federal government immediately implement the 75 recommendations identified in the Cohen Commission Report, and
BE IT FURTHER RESOLVED that cuts to funding for fisheries science and ecosystem management be restored
MP Robert Chisholm spoke in favour of this motion.
MP Philip Toone (Gaspésie—Îles-de-la-Madeleine) spoke in favour.