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Details for Benchmark: JY0461

N 39° 20.000 W 082° 58.933 (NAD 83)

Altitude: 637.51

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

Location:
In ROSS county, OH View Original Datasheet
Designation:
Q
Marker Type:
chiseled square
Setting:
mat foundation, concrete slab, etc.
Stability:
May hold, but of type commonly subject to surface motion.

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We spotted this one while geocaching in the area.

Chiseled squares are often hard to find, but this was right out in front of the courthouse by a lamp post. The mark is only 50 years old so it is in good condition. It is younger than many benchmarks I have found. (The chiseled square on Butler County Ohio Courthouse is about 50 years older.)

The lettering surrounding the square was clear too.

Discovered

[Photos:]
photo

Found as described.

[Photos:]
photoJY0461

Impressive.

[Photos:]
photo1 inch square
photoBy the light

Recovered in remarkably good condition. Our oldest benchmark find!

[Photos:]
photoQ

lil_ellie showed this one to me to get me started.

[Photos:]
photothose are my feet

Not much sun out today to create shadows with much depth in the pic. Found with terra di madre. We walked past this benchmark on our way to and from work last year. My GPS is my phone and camera.

[Photos:]
photoJY0461

Station recovered as described in good condition. This is the only existing mark in Ohio from the 1879 survey. There is one in Indiana (JZ0530) and 2 or 3 in Kentucky.

[Photos:]
photoJY0461
photoJY04761 w/GPS
photoJY0461 and JY0463 -looking WSW to both marks

Recovered in good condition at N 39° 20.017 W 082° 58.942.

[Photos:]
photoJY0461(Q) - Chillicothe OH
photoJY0461 - Looking W toward mark

First find of the day on our way to Portsmouth...

[Photos:]
photoJY0461

my first benchmark find was very easy to find

[Photos:]
photojyo461 photo
jy0461

Stopped to look at this one on the way back from lunch today.

Our "lunch crew" probably walks by this spot at least once per week... Never stopped to look before.

-Roogles

Found as described. Chiseled square and setting in good condition. This is, I believe, the oldest BM I have found to date.

[Photos:]
photoQ JY0461 Chillicothe, OH
the setting is the benchmark......
photoJY0461 & JY0463
2 BM's in one shot

Found this with relative ease. Great example of a historic marker that gets passed by many of us and is rarely appreciated.

[Photos:]
photoIMG_0396.jpg

I never knew this was here and I've lived near here my whole life and even wrote a report on the courthouse once. Logging for the benchmark hunting contest as "chiseled square".

[Photos:]
photoChiseled square benchmark Ross County Courthouse
Chiseled Square type benchmark at the Ross County Courthouse.

Found easily... I remember looking at this years ago when I was a kid, and in town.

Found it. And maybe sat on it a few times during events and never new what it was. Look for other benchmarks nearby.

Found with no difficulty. Had seen this mark many times previously but never knew what it was for! This is a neat learning experience besides being lots of fun!

Documented History (by the NGS)

Unknown by CGS (MONUMENTED)
01/01/1967 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 AT CHILLICOTHE. AT CHILLICOTHE, AT THE COUNTY COURTHOUSE, AT THE INTERSECTION OF MAIN AND PAINT STREET, THE BOTTOM OF A 1-INCH SQUARE HOLE SURROUNDED BY THE LETTERING Q BM USC AND GS AUG 5 1879 CUT IN STONE PEDESTAL OF A LAMP POST NORTH OF THE MAIN ENTRANCE TO COURTHOUSE, 145 FEET NORTH OF THE NORTH CURB OF MAIN STREET, 21 FEET WEST OF THE WEST CURB OF PAINT STREET, 25 FEET NORTHEAST OF BENCH MARK A 643.67 USGS DESCRIBED, AND ABOUT 4 FEET ABOVE THE LEVEL OF THE SIDEWALK.
01/01/1984 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1984 RECOVERED IN GOOD CONDITION, NOT LEVELED TO IN 1985

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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