TY - RPRT TI - Characterization of groundwater quality and discharge with emphasis on selenium in an irrigated agricultural drainage near Delta, Colorado, 2017–19 AU - M. Alisa Mast PY - 2021 DO - 10.3133/sir20205132 UR - https://pubs.usgs.gov/publication/sir20205132 ID - sir20205132 ER -