TY - RPRT TI - Evaluating chlorophyll fluorescence sensors as a proxy for chlorophyll a concentrations in the Illinois River, Illinois, water years 2018–24 AU - Brock J.W. Kamrath AU - Colin S. Peake PY - 2026 DO - 10.3133/sir20265052 UR - https://pubs.usgs.gov/publication/sir20265052 ID - sir20265052 ER -