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Monitoring location West Twin Lake at Vienna Jct, MI (Photic Zone) - USGS-445235084201003

Important for you to know:

  • USGS will be performing maintenance on WDFN webpages beginning Tuesday, May 12. If you cannot access the page you are intending or are unexpectedly redirected to a different page, please reach out to wdfn@usgs.gov for assistance.