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Details for Benchmark: AW2170

N 29° 47.244 W 095° 49.371 (NAD 83)

Altitude: 140.73

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

Location:
In HARRIS county, TX View Original Datasheet
Designation:
KATY 2
Marker Type:
triangulation station disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

Reference Points

Must Read!

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Checked on it today, since it hadn't been recovered in 4.5 years.... Some recent landscaping made it tough to spot, as the landscapers covered the actual BM with some edging stones (see attached pics).

Recovered in good condition, but watch out for ants (as they got me while trying to clean the BM for the pics). Coordinates are quite good on this one, no need to update them.

[Photos:]
photoAW2170 - KATY 2 - 1
photoAW2170 - KATY 2 - 2
photoAW2170 - KATY 2 - 3

FamilieRyan Son was out with a group and found this one!

Criffree was giving us a tour of benchmarks today.

out with WSC - I had gotten the water tower before, but had not stopped to find any others... this is in good shape, even with the work going on nearby!!

Out with WSC and finding these three close together benchmarks. Thanks criffree for introducing us to this part of the game.

Benchmark in great shape. Cold day though.

[Photos:]
photoKaty 2
Found in the quiet town of Katy!

Quick grab by looking at others photos.

[Photos:]
photoaw2170

Found just two steps from the parking. I will post my photographs when I return to the UK.

[Photos:]
photoAW2170.JPG
photoAW2170 Location.JPG

Recovered as described in good condition. Katy Library is now City Annex building.

[Photos:]
photoAW2170
photoAW2170 setting

Good find.

Found as described in good condition.

[Photos:]
photoDisk AW2170
photoArea AW2170

Documented History (by the NGS)

01/01/1974 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1974 (CLN) THE STATION IS LOCATED IN THE CENTRAL PART OF THE CITY OF KATY, ON CITY PROPERTY, SOUTHEAST OF THE PROPOSED NEW MUNICIPAL BUILDING, ALONG THE NORTH SIDE OF SECOND STREET. THE STATION MARK IS A STANDARD DISK STAMPED KATY 2 1974, SET IN A ROUND CONCRETE MONUMENT FLUSH WITH THE GROUND. IT IS 150 FEET EAST OF THE CENTER OF AVENUE C, 38 FEET NORTH OF THE CENTER OF SECOND STREET, AND 9.5 FEET SOUTH OF THE SOUTHWEST CORNER OF THE BUILDING WHICH SHALL BECOME THE CITY LIBRARY. REFERENCE MARK NO. 4 IS A STANDARD DISK STAMPED KATY 2 NO 4 1974, CEMENTED IN A DRILL HOLE IN THE 7 X 7-FOOT CONCRETE BASE OF A CITY WATER PUMP AND PROJECTING 1-INCH ABOVE GROUND LEVEL. IT IS 90 FEET WEST OF THE CENTER PIPE OF A CITY WATER TANK, AND 48 FEET NORTH OF THE NORTHWEST CORNER OF THE PROPOSED LIBRARY BUILDING. REFERENCE MARK NO. 5 IS A STANDARD DISK STAMPED KATY 2 NO 5 1974, SET IN A CEMENT SIDEWALK AT THE TIME IT WAS POURED. IT IS 102 FEET EAST OF CENTER OF AVENUE C, 35 FEET SOUTH OF THE CENTER OF SECOND STREET, 7.5 FEET NORTH OF THE NORTHWEST CORNER OF A BRICK BUILDING (BEAUTY SHOPPE), 5 FEET SOUTH OF THE STREET CURB, AND 0.5 FOOT NORTH OF THE SOUTH EDGE OF THE SIDEWALK. REFERENCE MARK NO. 6 (AZIMUTH MARK) IS A STANDARD DISK STAMPED KATY 2 NO 6 1974, SET IN A ROUND CONCRETE MONUMENT FLUSH WITH THE GROUND. IT IS 37 FEET SOUTH OF THE CENTER OF SECOND STREET, 20 FEET WEST OF THE CENTER OF EAST AVENUE, 9 FEET SOUTH OF A POWER POLE, 18 FEET SOUTHEAST OF A STREET SIGN POST, 0.5 FOOT WEST OF THE WEST CURB OF EAST AVENUE, AND PROJECTS 1-INCH ABOVE THE TOP OF THE CURB. TO REACH THE AZIMUTH MARK FROM THE STATION, GO EAST ON SECOND STREET 0.15 MILE TO EAST AVENUE AND THE MARK ON THE RIGHT AS DESCRIBED. THE ELEVATION AT THE STATION SITE IS 141 FEET.
01/01/1974 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 IN KATY. IN THE CENTRAL PART OF THE CITY OF KATY, ON CITY PROPERTY, SOUTHEAST OF THE PROPOSED NEW MUNICIPAL BUILDING, 150 FEET EAST OF THE CENTER OF AVENUE C, 38 FEET NORTH OF THE CENTER OF SECOND STREET, 9.5 FEET SOUTH OF THE SOUTHWEST CORNER OF THE BUILDING WHICH SHALL BECOME THE CITY LIBRARY, AND SET IN THE TOP OF A ROUND CONCRETE MONUMENT FLUSH WITH THE GROUND.
01/01/1978 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 0.1 MILE NORTH ALONG AVENUE A FROM THE STATION IN KATY, AND THENCE 0.1 MILE WEST ALONG SECOND STREET, SET ON CITY PROPERTY, SOUTHWEST OF AND ON THE SAME BLOCK AS THE WATER TOWER, 37 FEET NORTH OF THE CENTERLINE OF SECOND STREET, 39 FEET EAST OF THE SOUTHEAST CORNER OF THE KATY MUNICIPAL COMPLEX, AND 9 FEET WEST OF THE SOUTHWEST CORNER OF THE KATY LIBRARY.
01/01/1986 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986 RECOVERED IN GOOD CONDITION.
06/25/1994 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1994 RECOVERED IN GOOD CONDITION.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in February 1996.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • 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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