- Arlington is a city in northern Snohomish County, Washington, United States, part of the Seattle metropolitan area. The city lies on the Stillaguamish River in the western foothills of the Cascade Range, adjacent to the city of Marysville. It is approximately 10 miles (16 km) north of Everett, the county seat, and 40 miles (64 km) north of Seattle, the state’s largest city. As of the 2020 U.S. census, Arlington had a population of 19,868; its estimated population is 20,075 as of 2021.
- The Palouse Ecoregion (storymaps.arcgis.com)
The Palouse Prairie is an endangered ecosystem spanning Eastern Washington, Western Idaho, and Northeastern Washington (Noss et al. 1995). Different sources have a variety of historical ranges throughout this region. The most widely accepted historical range was created by Black et al. 1998. Black’s map displays the extensive loss of the Palouse Prairie’s range due to agricultural land conversion. Many of these maps are fairly old paper maps. Interactive, online maps of this region are lacking and needed.