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Details for Benchmark: HV9705

N 38° 02.381 W 076° 19.338 (NAD 83)

Altitude: 3.6

Coordinates may not be exact. Altitude is LEVELING and location is ADJUSTED. (more info)

Location:
In ST MARYS county, MD View Original Datasheet
Designation:
SMC OO1
Marker Type:
survey disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

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Recovered today in good condition. Visiting the park for CAM. The mark is fairly easy to spot in the grassy area in the center of the traffic loop. The coordinates look pretty good on satellite view.

[Photos:]
photoHV9705, designation "SMC OO1"

Recovered while caching in the area.

[Photos:]
photoHV9705

Found in good condition

[Photos:]
photoHV9705

Stopped here on the Maryland Lighthouse Challenge - found this marker in good condition.

[Photos:]
photoHV9705 Disk
photoDisk and GPS
photoDisk Location

Found while caching in the area. Still in great shape and easy to find. Stamping is clearly legible. See Photos. CC76...

[Photos:]
photoScreen Shot
photoSMC 001 Up Close
photoSMC 001 With Lighthouse in the Background
photoPoint Lookout Lighthouse

This was easily visible.

[Photos:]
photoHV9705 Location
photoHV9705 Disk

Found this one while finding the nearby Star Spangled Banner (SSB) geotrail cache. It was great coming here with a good geo-friend and avid benchmark hunter. redlights pointed me in the right direction.

  • Mrs. SeeKPeeKRs

P.S. An interesting side note here: this was my 100th benchmark find!

[Photos:]
photoLocation
photoGPSr and Disc
photoSMC 001 Disc

I was in the area visiting the lighthouse and spotted this one. My handheld coordinates were: N 38*02.381 by W 076*19.338. I'll upload pictures soon.

[Photos:]
photoSMC 001 Location
Sorry it was getting late. But the disk in just in front of my yellow pad.
photoSMC 001 Closeup

This station was found as described. The white brick building is a museum item - the smokehouse for the lighthouse keeper.

[Photos:]
photoAt station SMC 001 in St. Marys County, MD
The disk is seen in the center foreground in the grass. The lighthouse has lots of interesting history on the web as well as stories about its haunting by ghosts.
photoStation SMC 001 in St. Marys County, MD
The disk.

Documented History (by the NGS)

01/01/1992 by MCCRON (MONUMENTED)
DESCRIBED BY J R MCCRONE JR INCORPORATED 1992 STATION IS LOCATED AT POINT LOOKOUT IN THE MIDDLE OF A LOOP ROAD NEAR A WHITE BRICK BUILDING. TO REACH TAKE ROUTE 5 SOUTH TO END OF ROAD AT POINT LOOKOUT LIGHT HOUSE. STATION MARK IS SET IN THE TOP OF 0.83 FT (0.25 M) DIAMETER CONCRETE MONUMENT SET FLUSH WITH THE GROUND. IT IS LOCATED 60.65 FT (18.49 M) FROM THE SOUTHWEST CORNER OF THE WHITE BRICK BUILDING, 64.60 FT (19.69 M) FROM THE NORTHWEST CORNER OF THE WHITE BRICK BUILDING.

Control Text

  • The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in May 1998.
  • The orthometric height was determined by differential leveling. The vertical network tie was performed by a horz. field party for horz. obs reductions. Reset procedures were used to establish the elevation.
  • The X, Y, and Z were computed from the position and the ellipsoidal ht.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The ellipsoidal height was determined by GPS observations and is referenced to NAD 83.
  • The geoid height was determined by GEOID99.

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