Michigan Department of Environmental Quality (MI): water quality sampling program, 1967-1997
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资源简介：
This program is the water quality sampling program for the state of Michigan (formerly the
Department of Natural Resources, then the Department of Environmental Quality). Most, if not all
lakes are public and > 25 acres. The goal of the program is to determine inland lake trophic
status. Spring samples are taken to determine total phosphorus and other parameter levels of the
lake while it is well mixed. Summer samples were also performed for other parameters.
创建时间：
2017-08-05
