TY - RPRT TI - Application of surrogate technology to predict real-time metallic-contaminant concentrations and loads in the Clark Fork near Grant-Kohrs Ranch National Historic Site, Montana, water years 2019–20 AU - Christopher A. Ellison AU - Steven K. Sando AU - Tom E. Cleasby PY - 2023 DO - 10.3133/sir20235021 UR - https://pubs.usgs.gov/publication/sir20235021 ID - sir20235021 ER -