1992 Map of Ochoco Reservoir

About this map

Ochoco Reservoir dominates this central Oregon landscape, serving as a primary water management feature where the high desert meets the southern slopes of the Ochoco Mountains. This 1992 field-checked survey illustrates the complex water system fed by Ochoco Creek, Mill Creek, and Johnson Creek, highlighting the vital role of the Ochoco Spillway in controlling the reservoir's levels. To the south, the expansive plateau of Combs Flat transitions into the drainage of Gravy Gulch, showing the contrast between the flat upland terrain and the dissected creek beds.