| Date: | 1976-04-15 |
| Time: | 1650 |
| Geyser: | Surprise Pool |
| Webcam: | No |
| Initial: | No |
| Major/Minor: | N/A |
| Duration: | 8m15s |
| Standardized Duration: | 8m 15s |
| Time Entered: | 2017-10-01 19:41:56 |
| Time Uploaded: | 2019-05-13 21:47:04 |
| Entrant: | research-mab |
| Observer: | Hutchinson field notes - box 74 |
| Submitted to: | Geysertimes.org |
| Comments: | rise of pool noticed ~2m before eruption |