Unified Interior Regions

Region 9: Columbia-Pacific Northwest

Regions L2 Landing Page Tabs

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Newberry Volcano, Oregon simplified hazards map showing potential i...

Newberry Volcano, OR simplified hazards map

Newberry Volcano, Oregon simplified hazards map showing potential impact area for ground-based hazards during a volcanic event.

A hydrologic technician from the USGS Idaho Water Science Center measures streamflow in the St. Joe River at Red Ives Ranger Sta

A hydrologic technician measures streamflow in the St. Joe River at Red Ives Ranger Station in northern Idaho.

A hydrologic technician from the USGS Idaho Water Science Center measures streamflow in the St. Joe River at Red Ives Ranger Station in northern Idaho. The USGS is collecting data at hundreds of sites on rivers and streams in six western states to document

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Horizontal displacement vectors for GPS stations at Mount St. Helen...

Horizontal displacement vectors at Mount St. Helens (2008-2014)

Map of horizontal displacement vectors for Global Positioning System (GPS) stations in and around Mount St. Helens. Blue arrows show the direction and magnitude of horizontal movement, as measured at the GPS station from 2008-2014. The total horizontal displacement is indicated in millimeters (mm) and inches (in). Light blue circles at the end of the arrows are

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Dome building episode from 2004-2008 at Mount St. Helens can be obs...

Dome building episode from 2004-2008 at Mount St. Helens can be obs...

Dome building episode from 2004-2008 at Mount St. Helens can be observed and measured with these two digital elevation models (DEMs) developed before and after the eruptive episode.

Topographic map, Mount St. Helens, C.E. 1919 annotated with locatio...

Topographic map, Mount St. Helens, C.E. 1919 annotated with locatio...

Due to the cataclysmic eruption of May 18, 1980, many of the locations annotated on this map are now either covered or no longer visible.

Mount St. Helens prior to the catastrophic eruption of May 18, 1980...

Mount St. Helens prior to catastrophic eruption of May 18, 1980. St...

Mount St. Helens prior to the catastrophic eruption of May 18, 1980. Streams and lava flows also visible. View is looking southerly from oblique aerial view. Mount Hood in distance.

Looking upstream

Elwha River Sediment Monitoring - Looking Upstream

Looking upstream from the water supply diversion structure on the lower Elwha River. Image updated every 15 minutes.