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Details for Benchmark: NZ1139

N 42° 20.167 W 122° 54.270 (NAD 83)

Altitude: 1360

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

Location:
In JACKSON county, OR View Original Datasheet
Designation:
STEARNS
Marker Type:
survey disk
Setting:
setting not listed - see description
Stability:

Reference Points

Must Read!

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Well, this was an interesting find. I have never come across a bench mark (BM) embedded in the middle of the road, underneath a metal cap. After taking the cap off with my handy trowel, I discovered it was full of mud inside. After about ten minutes of digging all the sediment out and wiping it clean with my handy whisk broom and a paper towel I was able to take a nice picture of the Station Mark. I put the cap back over it and moved onto locating Reference Mark 1. My eyes took me right to a spot near Power Pole B18085 (from the datasheet) where there was a little bit of concrete protruding from the ground. A couple of swipes with my trowel found RM 1 buried under about an inch of dirt near a white fence and I was able to take a nice picture of that before moving onto RM 2. Unfortunately, I wasn't able to locate RM 2 after some searching. A previous bench marker supposedly logged RM 2 imbedded inside concrete by the canal. I couldn't find any disk imbedded in concrete and from the picture, it's hard to tell if it's a bench mark at all. It looks more like the bottom of a metal can that mistakingly became part of the concrete pouring. I was frustrated that the datasheet doesn't give any points-of-reference for finding the reference marks. I dug around across the street from RM 1 but found nothing. My hunch is that RM 2 is buried slightly underground equal distance to the Station Mark as with RM 1 but could be on either side of the street and is only going to be found with some searching with a metal detector, something I'm saving up for in the near future.

[Photos:]
photoNZ1139 Station Mark metal cover
This is the metal cap that covers the Station Mark in the middle of the street. It'll take a little work to pry it out to access the Station Mark inside.
photoNZ1139 Station Mark
And here's the prize inside after you take the metal cover off. It's in great condition and has been preserved well in all the mud I had to dig out to get to it to clean it up to this condition.
photoPower Pole B 18085
View of the Power Pole mentioned in the datasheet.
photoNZ1139 Reference Mark 1
Reference Mark 1 is pointing to the Station Mark in the middle of the street.
photoNZ1139 RM1 reference view
View of Reference Mark 1 on the ground on the right near the white fence and of the power pole on the left.

Well, I found it. It's not very impressive, as survey disks go. It is a city survey disk, which is interesting since it is outside the city limits.
The stamp is hard to read, but I think it says D71 right in the center of the disk. It is in a pouring of cement alongside a small canal. It is obvious the pouring was made just to place the disk in. This is a high-water area and the disk has spent some time under water.

[last edit: 6/6/2002 3:55:38 PM PST]

[last edit: 6/6/2002 7:46:50 PM PST]

[Photos:]
photoStearns
Stearns - City of Medford, OR Benchmark
photoView from Stearns
Here is the view looking west from the Stearns survey disk.

Documented History (by the NGS)

01/01/1971 by OR1310 (MONUMENTED)
DESCRIBED BY CITY OF MEDFORD OREGON 1971 THE STATION IS ABOUT 2 MILES NORTHWEST OF DOWNTOWN MEDFORD ON STEARNS WAY, 0.25 MILES WEST OF ROSS LANE. TO REACH THIS STATION FROM CITY HALL, PROCEED NORTH ON OAKDALE, LEFT (WEST) ON WEST MAIN STREET, RIGHT (NORTH) ON COLUMBUS, LEFT (WEST) ON JACKSON, RIGHT (NORTH) ON WESTERN AVENUE, LEFT (WEST) ON MAPLE PARK DRIVE, RIGHT (NORTH) ON ROSS LANE TO STEARNS WAY, POWER POLE B 18085 IS ABOUT 25 FT. NORTH OF STATION. THE STATION MARK IS A CITY OF MEDFORD DISK STAMPED STEARNS 1971, SET IN CONCRETE IN A MONUMENT CASE IN THE MIDDLE OF STEARNS WAY. R.M. NO. 1 IS A CITY OF MEDFORD DISK STAMPED STEARNS NO. 1 1971, SET IN A CONCRETE POST 36 IN LONG, 12 IN IN DIAMETER AND FLUSH WITH THE SURFACE. R.M. NO. 2 IS A CITY OF MEDFORD DISK STAMPED STEARNS NO. 2 1971, SET IN A CONCRETE POST 36 IN LONG, 12 IN IN DIAMETER AND FLUSH WITH THE SURFACE.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in October 1991.
  • 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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