The Channeled Scablands are a relatively barren and soil-free region of interconnected relict and dry flood channels, coulees and cataracts eroded into Palouse loess and the typically flat-lying basalt flows that remain after cataclysmic floods within the southeastern part of Washington state.

2018年4月19日 · Winding channels scar the bedrock. Through the eyes of a geologist, however, the landforms of the so-called Channeled Scablands reveal a past punctuated by violent floods. The network of channels is visible in a natural-color image (below the map) derived from the Operational Land Imager (OLI) on Landsat 8. The image is a “best-pixel mosaic ...

Bretz’s 1923 map of the Channeled Scablands shows the prevailing northeast-to-southwest orientation of dozens of coulees. The coulees branch and merge, wrapping around isolated mesas of basalt and loess.

2006年3月28日 · The part of the lava field that underlies the Scablands in eastern Washington is a saucer-shaped area of about 15,000 square miles almost completely surrounded by mountains and nearly encircled by three rivers—the Columbia, the Spokane, and the Snake (Fig. 2, page 3).

Bretz’s research was thorough, and his map of the channeled scablands was so accurate that it’s a virtual tracing of modern-day satellite images, creating the immediate impression of channeled floodwaters. But his audience—none of whom had visited, much less studied, the scablands—was having none of it.

The Channeled Scablands extend from the area around Spokane, west to the Columbia River near Vantage and southwest to the Snake River near Pasco. They are known as the "Channeled Scablands" because they are crisscrossed by long channels cut into the bedrock, called coulees.

This map depicts topographic evidence of the Missoula Floods on a portion of the Channeled Scablands in eastern Washington known as the Cheney–Palouse scabland tract. Made for the Washington Geological Survey. View and download the full-size map here.

In this interactive map, explore the region in and around the Channeled Scabland, and discover the extraordinary geologic features that the megafloods left behind.

Satellite map of Channeled Scablands, United States. Latitude: 47.5622 Longitude: -119.5395. The Channeled Scablands are a barren, relatively soil-free landscape in eastern Washington, scoured clean by a flood unleashed when a large glacial lake drained. They are a geologically unique erosional feature in the U.S. state of Washington.

(non-Flash) In this interactive map, explore the region in and around the Channeled Scabland, and discover the extraordinary geologic features that the megafloods left behind.