Between 2009 and 2015, monitoring in southern Green Bay, Lake Michigan revealed that low-oxygen (hypoxic) conditions are common during summer, affecting much of the bay’s bottom waters. Long-term records show the hypoxic season can last from weeks to months and may be increasing in duration, driven by stratification, oxygen consumption, and water movement. Links to the raw data used in this study are provided below.
Data files available by month in Microsoft Excel format (.xls, .xlsx). All data is raw and unedited. Appropriate acknowledgement and citation is expected upon use. Notification expected if there is intent for use in publication.
| Year | Month |
|---|---|
| 2009 | September |
| 2010 | July August September |
| 2011 | June July August September October |
| 2012 | June July August September October |
| 2013 | May June July August September |
| 2014 | June July August October |
| 2015 | June July August |