| Clue | Source | Date |
|---|---|---|
| Site of some silt | Thomas Joseph | 14 Dec 2024 |
| Superior's bottom is a huge one | ||
| Salt flat, once | New York Times | 30 Nov 2023 |
| Site of some silt | Thomas Joseph | 03 Jun 2023 |
| Locale for many a sunken boat | New York Times | 02 Dec 2022 |
| Erie's bottom, e.g | Universal | 07 Dec 2021 |
| An anchor may reach it | Family Time | 01 Mar 2021 |
| Erie's bottom | Universal | 28 May 2020 |
| Superior floor, e.g | New York Times | 22 Nov 2018 |
| Superior floor, e.g. | ||
| Silt setting | Thomas Joseph | 14 Jun 2017 |
| Site of some silt | Thomas Joseph | 14 Apr 2017 |
| Wet floor? | LA Times Daily | 15 Jul 2015 |
| Wet floor? | ||
| Fossil site, perhaps | ||
| Superior's low point | ||
| Silt locale | ||
| Large depression for water | ||
| Hole which holds a whole lot of water | ||
| Superior bottom |