2020 Map of Union Point

About this map

Diamond Hill anchors the western edge of this landscape where the floor of the Willamette Valley meets the rising foothills of the Cascades. The 2020 survey documents the complex drainage network of this boundary area between Linn and Lane counties, defined by the winding course of the Calapooia River in the northeast and numerous seasonal and perennial streams like Tub Run, Pierce Creek, and Shotgun Creek. The terrain transitions from rural valley roads such as Orchard Drive and Gap Road into the significant elevations of Bald Mountain, Horse Rock, and Cougar Ridge. These prominent landforms dictate the local road patterns, with routes like Courtney Creek Drive following the natural contours of the drainage basins. Notable landmarks like the McKercher Bridge emphasize the historically vital crossings along the river systems that have long shaped the region's movement and development.