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Details for Benchmark: AW5415

N 29° 47.733 W 095° 49.483 (NAD 83)

Altitude: 142.48

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

Location:
In HARRIS county, TX View Original Datasheet
Designation:
N 1504
Marker Type:
metal rod
Setting:
stainless steel rod
Stability:
Probably hold position/elevation well.

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Checked on it after a 5-year hiatus (by Criffree)... His coords were spot on, and yes it's still there.

Recovered in good condition, see attached pics.

[Photos:]
photoAW5415 - N 1504 - 1
photoAW5415 - N 1504 - 2
photoAW5415 - N 1504 - 3

Stopped by today as this walking distance to my parents home.
N 29 47.736 W 95 49.494
On the east edge of Ave D, where Ave Y T's into it. Not in the woods as the scaled coords put you.

[Photos:]
photoThe rod and its markings
photoThe surrounding area

I saw this one from the car on the way by. There is some construction going on, but the bm is still there.

[Photos:]
photoaw5415
photoaw5415-2

Recovered as described in good condition.

[Photos:]
photoAW5415
photoAW5415 setting

Well, the mark itself is in good condition. Missing cap and witness post.

Found as described in good condition.

[Photos:]
photoAW5415 Rod
photoAW5415 Area

Documented History (by the NGS)

01/01/1986 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1986 1.0 KM (0.6 MI) NORTH FROM KATY. 1.0 KM (0.65 MI) NORTH ALONG KATY-HOCKLEY ROAD (AVENUE D) FROM THE JUNCTION OF US HIGHWAY 90 IN KATY, 9.4 METERS (31.0 FT) EAST OF THE CENTERLINE OF AVENUE D, 9.8 METERS (32.0 FT) SOUTH OF THE EXTENDED CENTERLINE OF Y STREET LEADING WEST, 3.0 METERS (9.7 FT) EAST OF THE EAST CURB OF THE AVENUE, 0.73 METER (2.4 FT) SOUTH OF A POWER POLE. NOTE--ACCESS TO DATUM POINT IS HAD THROUGH A 5-INCH LOGO CAP. THE MARK IS 0.3 METERS N FROM A WITNESS POST THE MARK IS 0.6 M ABOVE THE ROAD.
06/25/1994 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1994 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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