- NGS PID:
- CH0129
- Coordinates:
- N 31.938333° W 113.005277° (estimate)
- Location:
- Elevation:
- 1070.0 ft.
- Type:
- Bench Mark Disk
- Setting:
- Concrete Post
- Year Established:
- 1935
- Established By:
- NGS
- Status:
- Not Found
- Condition:
- Unknown (Not Found) as of March 27, 2019
- Official Description: NGS Datasheet
W 109 was our final benchmark attempt on our drive west along Puerto Blanco Drive to Quitobaquito Spring. We didn't have USGS coordinates to work with because this mark doesn't appear on any of the topo maps we can find. The NGS coordinates are scaled, which typically means they're not very accurate, but they are all we had available to us today, other than the description. We used both the NGS coordinates and the description and searched both sides of the road (just in case), looking for any sign of the mark or the other references in the description. We found no sign of the old adobe house or the drainage ditch. There is no reason to think that this mark would have been removed; it's probably still here, and we just missed it. I want to try again!