Lake Champlain

Outreach

Clean Water Initiative Lecture Series

Rules Determining Mean Water Levels

30 December 2011
"Mean water level" for purposes of 29 V.S.A. §401 and "normal mean water level" for purposes of 10 V.S.A. §1422(8) shall be referenced to National Geodetic Vertical Datum of 1929 (NGVD 29), and shall be determined according to these rules.

What are Cyanobacteria?

Magnified cyanobacteria

Cyanobacteria are photosynthesizing bacteria that may produce cyanotoxins that can cause illness to exposed human and animal populations.   A bloom is a visually identified concentration of cyanobacteria that discolors the water.  Cyanobacterial cells may be found at the water surface, at a defined depth, or present throughout the water column. 

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