Plankton occurrence in the Willamette River, Portland, Oregon, 2024 (ver. 2.0, September 2024)

This data release contains plankton sampling results collected in the Willamette River in Portland, Oregon. The data release will be updated with new results as they are collected. The samples in this data release were collected at USGS stations 453027122400000 (Willamette River below the Holgate Channel), 452913122394300 (Ross Island Lagoon – Willamette River), and 453833122462700 (Willamette River at RM 1.5) between May 14 and August 14, 2024. Time-series water temperature, specific conductance, dissolved oxygen, pH, and chlorophyll and phycocyanin fluorescence data that were collected at 453027122400000 are available from the USGS National Water Information System (https://waterdata.usgs.gov/nwis).

First release: May 2024
Revised: September (ver. 2.0)