TY - RPRT TI - Effects of changes in reservoir operations on water quality and trophic state indicators in Voyageurs National Park, northern Minnesota, 2001-03 AU - Victoria G. Christensen AU - G. A. Payne AU - Larry W. Kallemeyn PY - 2004 DO - 10.3133/sir20045044 UR - https://pubs.usgs.gov/publication/sir20045044 ID - sir20045044 ER -