True. Here are some more notes...
Reasons it may be 250:
- TIGER tags
- It aligns with Smithfield's 250 East (Smithfield's grid matches up horizontally with US-91, as does the county grid)
- It's 1780 ft from US-91, which a measurement taken in Logan puts you exactly between 200 and 300 E

Reasons it may be 300 E:
- User keithalleman changed it to 300 about a year ago, implying an in-person survey
- I thought there was some other reason but can't remember what it was. I guess I agree then that 300 seems more likely.