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Details for Benchmark: AW5601

N 29° 33.600 W 095° 04.417 (NAD 83)

Altitude: 7.71

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

Location:
In HARRIS county, TX View Original Datasheet
Designation:
L 1503
Marker Type:
metal rod
Setting:
stainless steel rod
Stability:
Probably hold position/elevation well.

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Found it 9/18/2013 Thot found AW5601   Visit Log
N 29° 33.560 W 095° 04.479
It's at the entrance to the Jim West Mansion.

I seriously doubt I would have found this if HC hadn't found it and posted pictures. I'm amazed he saw it. When I got there it was covered by droppings from the palmetto bush and reaching through the bush to clean the rubble away I got puncture wounds and ruined a knit shirt.

Coordinates and Pictures accompany
[Photos:]
photoThe Mark
photoEye Level View
photoWide View
photoWider Yet
Found it 1/20/2013 cachestacker found AW5601   Visit Log
After seeing HC's post in the HGCS thread, I went for this one sans orange vest and metal detector on the way back home from seeing my dad in the hospital. Pindroppers and Benttandem saw me and I caught up to them on a nearby STS cache and told them about this benchmark. Beautiful day to be out doing .... anything.
[Photos:]
photoWide View
photoCloser-up view
Found it 1/19/2013 HoustonControl found AW5601   Visit Log
N 29° 33.561 W 095° 04.480
FTF on GC.com!!!

I guesstimated about where this one would be from the description -- the listed coordinates are over 400' off! I donned my orange vest and hardhat and pulled up to GZ like I owned the place. Found the stainless rod after a very short search, under a palmetto. The protective sleeve is still there, but the cover is missing. You can plainly see the 1503 embossed on the side of the rod. See pics!
[Photos:]
photoAW5601 -- L 1503
photoRod and GPSr
photoUnder the palmetto
photoWide view

Documented History (by the NGS)

1/1/1987 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1987 5.6 KM (3.5 MI) WEST FROM SEABROOK. 5.6 KM (3.5 MI) WEST ALONG NASA 1 ROAD FROM THE JUNCTION OF STATE HIGHWAY 146 AT SEABROOK TO THE JUNCTION OF A ROAD LEADING TO A LUNAR AND PLANETARY INSTITUTE AT 3303 NASA 1 ROAD AND THE MARK ON THE RIGHT, 18.84 METERS (61.8 FT) NORTHWEST OF THE CENTERLINE OF THE WESTBOUND LANE OF NASA 1 ROAD, 7.77 METERS (25.5 FT) NORTHEAST OF THE CENTER OF A CONCRETE CURB IN THE MEDIAN OF THE ENTRANCE AND EXIT TO INSTITUTE, 1.61 METERS (5.3 FT) SOUTH-SOUTHWEST OF A UTILITY POLE WITH A STRE LAMP. NOTE--ACCESS TO DATUM POINT IS HAD THROUGH A 5-INCH LOGO CAP. THE MARK IS ABOVE LEVEL WITH NASA 1 ROAD.
11/22/1993 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1993 RECOVERED IN GOOD CONDITION.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991.
  • The geoid height was determined by GEOID99.
  • The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (G = 980.6199 gals.).
  • The modeled gravity was interpolated from observed gravity values.

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