2024 Map of Pendleton

Several tributaries, including McKay Creek, Tutuilla Creek, and Wildhorse Creek, converge near the city, illustrating the drainage patterns that shaped the local topography. Traces of the area's development are found at the Olney Cem and along the Union Pacific rail lines that follow the river's path. High ground is marked by features such as Owen Hill and Despain Gulch to the north, overlooking the transition from valley floor to the surrounding plateaus.