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Details for Benchmark: JZ0846

N 39° 21.749 W 084° 32.775 (NAD 83)

Altitude: 601.73

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

Location:
In BUTLER county, OH View Original Datasheet
Designation:
HAMILTON NW BASE
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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Found this one close to the house also but it looks like mowers have in fact run over it for years.

[Photos:]
photoDisk hard to read
photoin cement setting

#225 The benchmark is now at the bottom of a 4" PVC pipe tube, about 18" underground.

Couldn't find RM 1 or RM 2.

RM 3 looks like it's been hit several times by lawnmowers.

RM 4 looks good.

[Photos:]
photoJZ0846 (at the bottom of the PVC pipe)
photoJZ0846 RM 3
photoJZ0846 RM 4

Documented History (by the NGS)

01/01/1947 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1947 (CTH) STATION IS LOCATED IN THE SOUTHWEST EDGE OF HAMILTON ABOUT 1/2 MILE NORTHWEST OF THE UNDERPASS ON STATE HIGHWAY 4 ON PROPERTY OWNED BY MR. GEORGE C. HICKS ABOUT 1OO FEET NORTH OF THE INTERSECTION OF HUSTON ROAD AND A DIRT TRACK ROAD, 82 FEET NORTH OF A RED ROAD MARKER, 61 FT W OF THE WESTERN MOST RAIL OF THE BALTIMORE AND OHIO RAILROAD TRACKS, 47 FEET NORTH-NORTHEAST OF THE CENTERLINE OF HUSTON ROAD AND 17 FEET WEST OF THE CENTERLINE OF TRACK ROAD. THE MARK IS 12 INCHES BELOW THE SURFACE OF THE GROUND AND THE DISK IS STAMPED HAMILTON N W BASE 1947. REFERENCE MARK NO. 1 IS 117.75 FEET SOUTHEAST OF THE STATION, 28 FEET WEST OF THE WESTERNMOST RAIL OF RAILROAD TRACKS AND 19 FEET EAST OF THE CENTERLINE OF HUSTON ROAD. THE MARK PROJECTS 2 INCHES AND THE DISC IS STAMPED HAMILTON N W BASE NO 1 1947. REFERENCE MARK NO. 2 IS 133.03 FEET WEST OF THE STATION AND 18 FEET SOUTH OF THE CENTERLINE OF HUSTON ROAD. THE MARK PROJECTS 2 INCHES AND THE DISK IS STAMPED HAMILTON N W BASE NO 2 1947. THE AZIMUTH MARK IS 0.25 MILE NORTH OF THE STATION, 84 FEET SOUTH-SOUTHEAST OF THE SOUTHEAST CORNER OF HOUSE AT 1113 CLINTON AVENUE, 73 FEET WEST OF THE WESTERNMOST RAIL OF THE BALTIMORE AND OHIO RAILROAD AND 23 FEET WEST OF THE CENTERLINE OF TRACK ROAD. THE MARK PROJECTS 2 INCHES AND THE DISK IS STAMPED HAMILTON N W BASE 1947. TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 4 AND ERIE HIGHWAY IN THE SOUTH PART OF HAMILTON, GO SOUTH ON STATE HIGHWAY 4 FOR 1.1 MILES TO HUSTON ROAD ON THE RIGHT. (THIS POINT IS 100 FEET SOUTH OF THE UNDERPASS ON STATE HIGHWAY 4). TURN SHARP RIGHT AND FOLLOW HUSTON ROAD (OILED) ALONG THE WEST SIDE OF RAILROAD TRACKS FOR 0.4 MILE TO A POINT WHERE HUSTON ROAD BEARS LEFT OR WEST AWAY FROM THE RAILROAD TRACKS. THE STATION IS ABOUT 100 FEET NORTH AS DESCRIBED. TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTH ON DIRT TRACK ROAD ALONG THE WEST SIDE OF RAILROAD TRACKS FOR 0.25 MILE TO 1113 CLINTON AVENUE AND THE AZIMUTH MARK. HEIGHT OF LIGHT ABOVE STATION MARK 30 METERS.
01/01/1947 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1947 2.2 MI SE FROM HAMILTON. 2.25 MILES SOUTHEAST ALONG THE BALTIMORE AND OHIO RAILROAD FROM THE STATION AT HAMILTON, ON THE PROPERTY OWNED BY GEORGE C. HICKS, AT A POINT WHERE HUSTON ROAD PARALLELS THE TRACK SOUTHEAST AND TURNS WEST AWAY FROM THE TRACK, 48 FEET NORTH OF THE CENTER LINE OF HUSTON ROAD FROM R.M. NO. 2, ABOUT 8 RAILS SOUTHEAST OF THE SOUTHEAST END OF RAILROAD BRIDGE NO. 232, 118 FEET NORTHWEST OF R.M. NO. 1, 18 FEET SOUTHWEST OF THE CENTER LINE OF A LANE PARALLELING THE TRACK, 61.3 FEET SOUTHWEST OF THE SOUTHWEST RAIL OF THE TRACK, AND SET IN THE TOP OF A CONCRETE POST ABOUT 1 FOOT BELOW THE SURFACE OF THE GROUND. NOTE-- THE AREA HAS BEEN BUILT UP SINCE 1947 MAKING THE DESCRIPTION INADEQUATE.
01/01/1955 by USGS (MARK NOT FOUND)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1955 MARK NOT FOUND.
01/01/1980 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1980 (CLN) THE STATION MARK AND STATION MARK WERE FOUND IN GOOD CONDITION AFTER A LONG SEARCH. REFERENCE MARK 1 WAS FOUND UPROOTED AND ABOUT 35 FEET FROM ITS ORIGINAL SITE. REFERENCE MARK 2 WAS NOT FOUND AND ASSUMED DESTROYED BY CONSTRUCTION. THE DIRECTION TO THE WATER TANK CHECKED. REFERENCE MARKS 3 AND 4 WERE SET. A NEW DESCRIPTION FOLLOWS. THE STATION IS LOCATED AT THE SOUTHEAST EDGE OF HAMILTON, JUST NORTH OF THE FAIRFIELD CORP. LIMIT, ON STREET RIGHT OF WAY, 61 FEET SOUTHEAST OF THE NORTHEAST CORNER OF HOUSE 1112 BROUGH AVE, 59 FEET EAST OF THE SOUTHEAST CORNER OF THE HOUSE, 60 FEET NORTHEAST OF A FIRE HYDRANT, 61 FEET SOUTHWEST OF THE NORTHWEST RAIL OF RAILROAD TRACKS, 69 FEET NORTHEAST OF THE CENTERLINE OF BROUGH AVE., AND 17 FEET SOUTHWEST OF THE CENTERLINE OF ZIMMERMAN AVE. THE MONUMENT IS 18 INCHES UNDERGROUND AND THE DISK IS STAMPED---HAMILTON NW BASE 1947---. REFERENCE MARK 3 IS 30 FEET SOUTHWEST OF THE NORTHWEST RAIL OF THE RAILROAD TRACK, 10 FEET SOUTH OF A POWER POLE, 19 FEET NORTHEAST OF THE CENTERLINE OF ZIMMERMAN AVE AND 1 FOOT NORTHWEST OF A METAL WITNESS POST. THE MONUMENT PROJECTS 3 INCHES AND THE DISK IS STAMPED---HAMILTON NW BASE 1947 NO 3 1980---. REFERENCE MARK 4 IS A STANDARD DISK, STAMPED---HAMILTON NW BASE 1947 NO 4 1980---SET IN A DRILL HOLE IN CONCRETE SIDEWALK, 44 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF THE HOUSE, 8 FEET NORTHWEST OF THE FIRE HYDRANT, 22 FEET NORTH OF THE CENTER LINE OF BROUGH AVE AND 6 INCHES NORTH OF THE SOUTH EDGE OF THE SIDEWALK. THE AZIMUTH MARK IS 28 FEET SOUTHWEST OF THE CENTER LINE OF ZIMMERMAN AVE., 12 FEET NORTHEAST OF A FENCE CORNER, 78 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF HOUSE 1113 CLINTON AVE., AND 15 FEET SOUTHEAST OF THE CENTERLINE OF A DRIVEWAY. THE MONUMENT IS FLUSH AND THE DISK IS STAMPED---HAMILTON NW BASE 1947---.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in April 1998.
  • 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.