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Details for Benchmark: MB1701

N 41° 57.800 W 080° 32.950 (NAD 83)

Altitude: 631.5

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

Location:
In ASHTABULA county, OH View Original Datasheet
Designation:
906 3043 WL 117
Marker Type:
survey disk
Setting:
footings/foundation walls of small/medium structures
Stability:
May hold, but of type commonly subject to surface motion.

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Nice walk around the area today. Found a couple of benchmarks.

[Photos:]
photoClose up
Close up
photoLooking east
Looking east

Nice walk around the area today. Found a couple of benchmarks.

[Photos:]
photoClose up of MB1701
Close up of MB1701
photoLooking towards the benchmark
Looking towards the benchmark

Found this after grabbing the geocache right down the street.

[Photos:]
photoBenchmark...

The mark is in good condition at N 41° 57.813 W 080° 32.955.

[Photos:]
photoMB1701(906 3043 WL 117) - Conneaut OH
photoMB1701 - Looking N from mark
photoMB1701 - Looking E toward mark
photoMB1701 - Looking S toward mark

Documented History (by the NGS)

01/01/1935 by USLS (MONUMENTED)
01/01/1981 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1981 IN CONNEAUT. IN CONNEAUT, ON THE WEST SIDE OF CONNEAUT HARBOR AT THE EAST END OF PEARL AVENUE, SET VERTICALLY IN THE WEST FACE OF THE PITTSBURGH AND CONNEAUT DOCK COMPANY MAIN OFFICE BUILDING AND NEAR THE NORTHWEST CORNER OF THE BUILDING, 12.80 METERS (42.0 FEET) NORTH OF THE MAIN ENTRANCE DOOR OF THE BUILDING AND 0.94 METER (3.1 FEET) SOUTH OF THE NORTHWEST CORNER OF THE BUILDING. THE MARK IS 1.00 M ABOVE THE GROUND.
12/08/1993 by OHDT (GOOD)
RECOVERY NOTE BY OHIO DEPARTMENT OF TRANSPORTATION 1993 (BM) RECOVERED IN GOOD CONDITION.
06/16/1996 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1996 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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