Dissolved organic carbon concentrations for seasonal synoptic sampling of 100 urban streams in Portland, Oregon (USA) from 2023-2024

This dataset contains dissolved organic carbon concentrations from surface water samples collected at 100 urban stream locations in the greater Portland, Oregon metropolitan area. Samples were collected four times (July 2023, October 2023, January/February 2024, and May 2024) to capture spatial and seasonal variation in DOC concentrations. Filtered stream samples were analyzed for dissolved organic carbon concentration. These data were collected as part of the Carbon in Urban Rivers Biogeochemistry (CURB) Project. Detailed field data and site data are published separately and can be linked using the “curbid” and “synoptic_event” columns in each dataset