| Date: | 2017-08-09 |
| Time: | 1558 |
| Geyser: | Grand |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | ~11m |
| Standardized Duration: | ~11m |
| Grand Code: | -1C |
| Time Entered: | 2017-08-09 22:52:00 |
| Time Uploaded: | 2019-05-13 21:44:01 |
| Entrant: | JSJ |
| Observer: | James St. John |
| Submitted to: | Geysertimes.org |
| Comments: | -1C. Eruption from 1558 to 1609. Seen from Crested Pool platform. |