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Details for Benchmark: LN0550

N 40° 00.377 W 108° 48.068 (NAD 83)

Altitude: 6133

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

Location:
In RIO BLANCO county, CO View Original Datasheet
Designation:
GLO 5 RM 1
Marker Type:
survey disk
Setting:
in rock outcrop
Stability:

Reference Points

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Found as described. Found RM1 (LN0549). Did not search for the AZ.

[Photos:]
photoLN0550 GLO 5 RM1
photoLN0550 GLO 5 RM1 in Rio Blanco Co., CO
Looking west (as one would approach from the cattle guard) the disk is at the white notebook, center.

GLO 5 RM 1 was recovered in good condition.

A new To Reach follows: South from Rangely approximately 5.5 miles to a graded road Rio Blanco County Road 100, thence left 1.0 mile to the station on the right, mark is 160 feet west of a cattleguard, and 171 feet west of the centerline of RBCR 100.

[Photos:]
photoLN0550 20060408 G (Rio Blanco Co. Colorado)
GLO 5 RM 1 w/GPSr.
photoLN0550 20060408 C (Rio Blanco Co. Colorado)
GLO 5 RM 1.
photoLN0550 20060408 B (Rio Blanco Co. Colorado)
GLO 5 RM 1 from Eye Level.
photoLN0550 20060408 A1 S (Rio Blanco Co. Colorado)
South at GLO 5 RM 1.
photoLN0550 20060408 A2 NW (Rio Blanco Co. Colorado)
Northwest at GLO 5 RM 1.

Documented History (by the NGS)

01/01/1931 by USGLO (MONUMENTED)
DESCRIBED BY US GOVERNMENT LAND OFFICE 1931 (CIA) IDENTICAL WITH REFERENCE MARK NO. 1 OF G.L.O. STATION 5 WHICH IS 49.962 METERS (163.92 FEET) DISTANT S 23 DEG 37 MIN W.
01/01/1937 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1937 (FGJ) ALL MARKS RECOVERED IN GOOD CONDITION. AZIMUTH MARK ESTABLISHED. ALL MARKS STANDARD G.L.O. DISKS SAVE AZIMUTH MARK. THIS STATION IS ABOUT 19 MILES ENE OF WATSON AND ABOUT 9 MILES BY ROAD SW OF RANGELY. IT IS THE STANDARD CORNER OF SECTIONS 35 AND 36 T 1 N, R 102 W, 6TH P.M. ON THE SIXTH BASE LINE. THE STATION IS A STANDARD GENERAL LAND OFFICE REFERENCE DISK (REFERENCE MARK NO. 1) SET IN DRILL HOLE IN OUTCROPPING BEDROCK. IT IS SET ON A LOW HILL ABOUT 1.5 MILES SE OF THE HIGHWAY KNOWN LOCALLY AS THE DRAGON CUT-OFF AND 0.4 MILE SE OF A HIGHER HILL WHERE THE AZIMUTH MARK IS SET. THE MARK IS ON THE HIGHEST POINT OF THE HILL WHICH IS ABOUT 1/4 MILE LONG AND 150 FEET WIDE. IT IS ABOUT 150 FEET NW OF THE SE SLOPE AT A POINT WHERE THE HILL STARTS SLOPING OFF TO THE NW. REFERENCE MARK NO. 1 IS SSW OF THE STATION AND IS A STANDARD BRONZE REFERENCE DISK SET IN LARGE BOULDER. IT IS ABOUT 4 FEET LOWER THAN THE STATION MARK. GENERAL LAND OFFICE NO. 5 IS A STANDARD STATION MARK BRONZE DISK SET IN A SMALL BOULDER 19- BY 9-INCHES. IT IS ON THE SW SLOPE OF THE HILL. IT IS STAMPED S C, T 1 N, R 102 W, S-35-36, 1931. AZIMUTH MARK IS ABOUT 0.4 MILE NW OF THE STATION ON THE SE EDGE OF THE HILL. IT IS A STANDARD COAST AND GEODETIC AZIMUTH MARK SET IN A LARGE SANDSTONE BOULDER. THIS BOULDER IS ON THE SE POINT OF THE HILL AND PROJECTS ABOUT 10 FEET ABOVE THE SURROUNDING HILL. MARK STAMPED G.L.O.-5 ECC. 1937. TO REACH FROM RANGELY GO W FOR 0.6 MILE TO SCHOOLHOUSE, TAKE LEFT FORK AND TO 0.1 MILE. HERE TAKE LEFT FORK TOWARD DRAGON FOR 5.9 MILES TO A POINT WHERE THE ROAD CURVES RIGHT. THIS POINT IS 0.45 MILE E OF A RIGHT ANGLED TURN AND ABOUT 100 YARDS E OF A SMALL ROCK CAIRN. TURN LEFT OFF THE ROAD AND PICK UP OLD TRACKS HEADING W. FOLLOW TRACK ROAD W AND SW FOR 0.6 MILE TO FORK. TAKE LEFT FORK AND GO 0.8 MILE TO EDGE OF TIMBER. FROM HERE GO SE ACROSS SAGEBRUSH FLAT TOWARD THE HIGHEST HILL VISIBLE. CLIMB HILL AND GO SE ALONG TOP OF RIDGE ABOUT 0.4 MILE TO THE NEXT LOW HILL AND STATION.
01/01/1961 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1961 RECOVERED.
01/01/1983 by LOCENG (GOOD)
RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1983 (SPW) REFERENCE NO 1 1931 RECOVERED GOOD. THIS IS THE STATION MARK. REFERENCE NO 2 1931 164 FEET BEARS 59 DEG W RECOVERED GOOD. SCTINR102W S35536 1931 BEARS S24 DEG W 164 FEET RECOVERED GOOD.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in November 1997.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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