Geochronologic data for selected subbasins of Stinking Water Gulch, Rio Blanco County, Colorado, 2015–2020

This data release contains traditional and portable optically stimulated luminescence (OSL) data collected from the Stinking Water Creek Basin near Rangely, Colorado, to constrain the timing of alluvial deposition and channel evolution in landscapes underlain by the Late Cretaceous Mancos Shale. The dataset includes OSL measurements from fluvial terraces, modern stream channels, and stratigraphic profiles sampled across multiple subbasins with differing land-use histories. Traditional OSL ages document multiple episodes of deposition spanning the Holocene and late historical period, while portable OSL measurements provide high-resolution stratigraphic information that identifies relative changes in luminescence signals associated with depositional and erosional processes. These data support investigations of arroyo evolution, channel incision and aggradation, sediment storage, and the effects of natural processes and land-use change on sediment, salinity, and selenium mobilization in western Colorado. The luminescence data presented here are associated with studies examining the geomorphic history and channel evolution of the Stinking Water Creek Basin.