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Details for Benchmark: JJ0208

N 38° 28.717 W 102° 46.733 (NAD 83)

Altitude: 4215.27

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

Location:
In KIOWA county, CO View Original Datasheet
Designation:
L 37
Marker Type:
bench mark disk
Setting:
mat foundation, concrete slab, etc.
Stability:
May hold, but of type commonly subject to surface motion.

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Still there and still silver.

Benchmark is in good shape

[Photos:]
photoJJ0208

Hard to read with all the paint but the recovery was made.

looks great

found in good condition was painted over

Found as described in good condition, but has been painted over. Couldn't get inside fence.

[Photos:]
photoJJ0208 L 37
photoJJ0208 EYE LEVEL
N 38° 28.737 W 102° 46.809

Bench Mark L 37 was recovered as described, in good condition. It is in the top of the north corner of the northeast leg of the city water tank.

[Photos:]
photoJJ0208 20060716 C1 (Kiowa Co. CO)
Bench Mark L 37.
photoJJ0208 20060716 C2 (Kiowa Co. CO)
Bench Mark L 37. The color has been inverted so as to make it easier to read the designation.
photoJJ0208 20060716 B1 (Kiowa Co. CO)
Bench Mark L 37 from Eye Level (and through the chain link fence).
photoJJ0208 20060716 B2 (Kiowa Co. CO)
Bench Mark L 37 from Eye Level.
photoJJ0208 20060716 A1 S (Kiowa Co. CO)
South at Bench Mark L 37.
photoJJ0208 20060716 A2 W (Kiowa Co. CO)
West at Bench Mark L 37.

Documented History (by the NGS)

01/01/1933 by CGS (MONUMENTED)
01/01/1942 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1942 AT EADS. AT EADS, KIOWA COUNTY, ON U.S. HIGHWAY 287, 69 FEET SOUTH OF THE SOUTHWEST CORNER OF THE COUNTY COURTHOUSE YARD, 30 FEET SOUTH OF THE CENTERLINE OF THE HIGHWAY, AT THE CITY WATER TANK, IN THE TOP OF THE NORTH CORNER OF THE CONCRETE BASE OF THE NORTHEAST LEG, AND 2 FEET HIGHER THAN THE HIGHWAY. A STANDARD DISK, STAMPED L 37 1933.
01/01/1967 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1967 RECOVERED IN GOOD CONDITION.
11/01/1995 by CODOT (GOOD)
RECOVERY NOTE BY COLORADO DEPARTMENT OF TRANSPORTATION 1995 (PG) RECOVERED AS DESCRIBED.

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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