A cartographic representation displaying the state’s geographical boundaries, infrastructure, and specifically highlighting the waterways traversing the landscape. These depictions commonly use different line weights and colors to differentiate rivers based on size, flow, or classification. Examples include the Columbia, Willamette, Snake, and Rogue Rivers, each distinctly portrayed across the states varied terrain.
The graphic is essential for various applications, ranging from environmental studies and resource management to recreational planning and transportation logistics. Its historical context reveals its use in early exploration, settlement patterns, and the development of the state’s economic sectors, especially agriculture and timber industries, which relied heavily on waterways for transportation and irrigation. Detailed visual accounts of these waterways have been fundamental in understanding the state’s hydrology and managing its water resources.
