Water resource data and trend analysis for the Highland Silver Lake comprehensive monitoring and evaluation project : Madison County, Illinois, phase IV /

"IEPA/WPC/86-001."

Water resource data and preliminary trend analysis for the Highland Silver Lake monitoring and evaluation project : Madison County, Illinois, phase III /

"IEPA/WPC/84-030."

Water resource data and preliminary trend analysis for the Highland Silver Lake monitoring and evaluation project : Madison County, Illinois, phase I /

"November, 1982."

Coastal recreation water quality monitoring and notification : report (to accompany H.R. 1721) (including cost estimate of the Congressional Budget Office).

"November 14, 2005."

Geohydrology of the Antelope Valley Area, California and design for a ground-water-quality monitoring network /

Mode of access: Internet.