Does anyone know what "Clum" stands for? The benchmark is Federal, on Aqua Caliente Peak, Pima County AZ.
CLUM is the name of the station, which is a First-order triangulation station established by the former Coast & Geodetic Survey in 1947.
Here's the data sheet, less the "to reach" directions:
[pre]
1 National Geodetic Survey, Retrieval Date = FEBRUARY 3, 2015
CZ1809 ***********************************************************************
CZ1809 DESIGNATION - CLUM
CZ1809 PID - CZ1809
CZ1809 STATE/COUNTY- AZ/PIMA
CZ1809 COUNTRY - US
CZ1809 USGS QUAD - AGUA CALIENTE HILL (1981)
CZ1809
CZ1809 *CURRENT SURVEY CONTROL
CZ1809 ______________________________________________________________________
CZ1809* NAD 83(1992) POSITION- 32 17 42.71284(N) 110 39 57.46555(W) ADJUSTED
CZ1809* NAVD 88 ORTHO HEIGHT - 1637.2 (meters) 5371. (feet) VERTCON
CZ1809 ______________________________________________________________________
CZ1809 GEOID HEIGHT - -27.98 (meters) GEOID12A
CZ1809 LAPLACE CORR - 4.17 (seconds) DEFLEC12A
CZ1809 HORZ ORDER - FIRST
CZ1809
CZ1809.The horizontal coordinates were established by classical geodetic methods
CZ1809.and adjusted by the National Geodetic Survey in August 1993.
CZ1809.
CZ1809.The NAVD 88 height was computed by applying the VERTCON shift value to
CZ1809.the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
CZ1809
CZ1809.The Laplace correction was computed from DEFLEC12A derived deflections.
CZ1809
CZ1809. The following values were computed from the NAD 83(1992) position.
CZ1809
CZ1809; North East Units Scale Factor Converg.
CZ1809;SPC AZ C - 144,285.054 331,155.002 MT 1.00007106 +0 40 05.9
CZ1809;SPC AZ C - 473,376.16 1,086,466.54 iFT 1.00007106 +0 40 05.9
CZ1809;UTM 12 - 3,573,205.911 531,450.183 MT 0.99961220 +0 10 42.5
CZ1809
CZ1809! - Elev Factor x Scale Factor = Combined Factor
CZ1809!SPC AZ C - 0.99974740 x 1.00007106 = 0.99981844
CZ1809!UTM 12 - 0.99974740 x 0.99961220 = 0.99935970
CZ1809
CZ1809: Primary Azimuth Mark Grid Az
CZ1809:SPC AZ C - CLUM AZ MK 156 18 13.4
CZ1809:UTM 12 - CLUM AZ MK 156 47 36.8
CZ1809
CZ1809|---------------------------------------------------------------------|
CZ1809| PID Reference Object Distance Geod. Az |
CZ1809| dddmmss.s |
CZ1809| CZ1813 REEF ROCK LOOKOUT TOWER APPROX.14.3 KM 1255157.1 |
CZ1809| CC7173 CLUM RM 1 4.959 METERS 13057 |
CZ1809| CC7172 CLUM AZ MK 1565819.3 |
CZ1809| CC7174 CLUM RM 2 4.083 METERS 24759 |
CZ1809|---------------------------------------------------------------------|
CZ1809
CZ1809 SUPERSEDED SURVEY CONTROL
CZ1809
CZ1809 NAD 83(1986)- 32 17 42.70852(N) 110 39 57.46072(W) AD( ) 1
CZ1809 NAD 27 - 32 17 42.43900(N) 110 39 55.16200(W) AD( ) 1
CZ1809 NGVD 29 (07/19/86) 1636.4 (m) 5369. (f) VERT ANG
CZ1809
CZ1809.Superseded values are not recommended for survey control.
CZ1809
CZ1809.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
CZ1809.See file dsdata.txt to determine how the superseded data were derived.
CZ1809
CZ1809_U.S. NATIONAL GRID SPATIAL ADDRESS: 12SWA3145073205(NAD 83)
CZ1809
CZ1809_MARKER: DD = SURVEY DISK
CZ1809_SETTING: 66 = SET IN ROCK OUTCROP
CZ1809
CZ1809 HISTORY - Date Condition Report By
CZ1809 HISTORY - 1947 MONUMENTED CGS
CZ1809 HISTORY - 1972 GOOD AZHD
[/pre]
It is not a bench mark
And Heidi's is spelled with a "K" !
"It is a darn poor mind indeed which can't think of at least two ways to spell any word." Andrew Jackson
That seems likely.
It is primarily a triangulation station, having accurate horizontal coordinates.
However, it does have a NAVD88 elevation, although only VERTCON accuracy, so it could also be called a bench mark without much stretch of the term.
Could it be in honor of this guy?
http://en.wikipedia.org/wiki/John_Clum br>
Never mind, done been said. When I posted my browser appeared as just the original post. I got something goofy going on here.
I've got no idea, but am amazed at some of the names old timers named their sacred points we all love and live by. Scratch your head and say "yes I found it". Toss in a tip of the hat to the big guy up there who got you there, and those old timers who have funny names.
On the other hand, anybody remember Red Skelton? Was it Clum Kadiddlehopper, or Clem? I thought Clem was the famous one? Maybe they were brothers?
I would love nothing more than to have a NGS monument named Waynes World. You can even pee on it, I would. It will be within 0.04 ft for those that care....;-)
> CLUM is the name of the station...
These station names are just made up on the spot. There is no special meaning. The data sheet that Kent has posted shows that the position and elevation given is not real precise by modern standards.
Check out the position in your new Google Earth Pro, guys. Beautiful panoramic pictures at the site.
In my area, the old triangulation stations are named after a nearby town or land owner. The three that come to mine are Astoria and Littleton, nearby towns and Burnham, named after the land owner.
The reason for the name is very simple. The station eas sey on a mountain top several years ago, so "they done clun up'air to set it". What else could have been a better name??
CP above has it. sans his fat fingers! They "Clum up thar an set it"!!!
🙂
Nate
trig-leveled from probably many miles, then shifted from ngvd29 to 88 using a conversion program, gigo, some tri stations do double duty, not this one
