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Details for Benchmark: BM0583

N 30° 16.817 W 097° 44.100 (NAD 83)

Altitude: 509.06

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

Location:
In TRAVIS county, TX View Original Datasheet
Designation:
X 804
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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Our 29th benchmark!

[Photos:]
photo
N 30° 16.819 W 097° 44.116

Found disk in good condition.

[Photos:]
photoBM0583

Bench mark hunting today. With previous posted coordinates, this was easy to spot.

[Photos:]
photoBM0583 - Disk
photoBM0583 - Setting

Spotted it while geocaching and waymarking in the area... Easily spotted, glad to see this one is still around!

[Photos:]
photoBM0583 - X 804 - 1
photoBM0583 - X 804 - 2

Stopped for this benchmark at the same time I grabbed the nearby Santa Rita cache. Great location! Easy find!

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photoimage
photoimage

X 804 is still residing on the bridge

[Photos:]
photoBM0583 / X 804 / 1953
You can find this one on the San Jacinto Blvd bridge over Waller Creeks on the north guardrail. N 30° 16.819 / W 097° 44.108
N 30° 16.819 W 097° 44.117

Recovered as described in good condition.
Orange marker paint around mark.

[Photos:]
photoBM0583
photoBM0583 Location
Orange paint is visible in picture

Hook 'em!

X marks the spot!

[Photos:]
photoX 804

Must Have been a Game or something going on. Parking and traffic Tight. Parked in a non-public space an put on the hazards. Snapped a couple pics and was on my way. Easy Find.

[Photos:]
photoBM0583
photoBM0583-Area

Found it with my son Blastoise6000 after a UT basketball game nearby.
The mark is in great shape, and can hear the Santa Rita tape loop drone on and on and on ...

[Photos:]
photoBM0583
Hook 'Em :-)
photoBM0583 setting

Being short, there's no way I could get a good angle on the benchmark on top of this wall (guardrail), so I climbed up on it. Anyone trying this needs to have a good sense of balance and be very careful. It's a long way down on the other side....

[Photos:]
photoBM0583

Coordinates closer to N 30 16 819 W 097 44 113

The 1953 description made it pretty obvious where to look. 'Nuff said.

[Photos:]
photoClose-up

Documented History (by the NGS)

01/01/1953 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1953 IN AUSTIN. AT AUSTIN, AT THE INTERSECTION OF SAN JACINTO BOULEVARD AND EAST 19TH STREET, 122 FEET WEST OF A STREET LIGHT, 35 FEET NORTH OF THE CENTER LINE OF SAN JACINTO BOULEVARD, SET IN THE TOP OF THE NORTH GUARD RAIL OF A CONCRETE BRIDGE OVER WALLER CREEK, 14.8 FEET EAST OF THE WEST END OF THE GUARD RAIL, 4.5 FEET ABOVE THE LEVEL OF THE STREET. 210 FEET NORTHEAST OF THE CENTER OF THE STREET INTERSECTION.
01/01/1980 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1980 RECOVERED IN GOOD CONDITION.
06/19/1986 by USGS (MARK NOT FOUND)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1986 (GH) MARK NOT FOUND.
01/01/1990 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1990 (GGB) 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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