CZ1469 - "U 19 RESET" vertical control mark - Tucson, AZ
Posted by: Groundspeak Premium Member Raven
N 32° 13.400 W 110° 58.417
12S E 502485 N 3565191
This benchmark is located behind the NW corner of the old Pima County Courthouse, right by one of the main entrances to the city's El Presidio historical park.
Waymark Code: WM11DF2
Location: Arizona, United States
Date Posted: 10/02/2019
Published By:Groundspeak Premium Member Ernmark
Views: 4

As described by the NGS in 1979 (although already monumented 2 years earlier):

"NEAR THE NORTHEAST CORNER OF A PARK BETWEEN THE CITY HALL AND PIMA COUNTY COURT HOUSE, IN TOP OF THE NORTHEAST CORNER OF THE CONCRETE FOUNDATION FOR A PARK LIGHT POLE, 55.5 FEET SOUTH OF THE SOUTH CURB OF ALAMEDA STREET, 69.5 FEET SOUTHWEST OF THE NORTHWEST CORNER OF THE OLD COURT HOUSE, 6.5 FEET WEST OF THE EXTENDED EAST CURB OF COURT AVENUE AND 4.0 FEET EAST OF THE NORTHEAST CORNER OF A CONCRETE ELEVATOR SHAFT BUILDING. THE MARK IS 1 FT ABOVE ALAMEDA STREET."

Save for the reference to the "light pole" (which is no longer there, only its foundation), the NGS description is still pretty accurate. The station is located on the ground about 4ft East of an outdoor elevator building.

The NGS' currently posted coordinates ("N 32 13 24.19 W 110 58 25.04") are definitely off, though... and misleading as they point to a location 25' North of the station in question (and closer to another wall, i.e. not by the elevator at all): my measurements were "N 32° 13.400 W 110° 58.417" based on 10+ readings within 10' accuracy.

The station was recovered in good condition.

---

Below are some basic additional facts, per the NGS database (with some editing for length): (visit link)

CZ1469 ***********************************************************************
CZ1469 DESIGNATION - U 19 RESET
CZ1469 PID - CZ1469
CZ1469 STATE/COUNTY- AZ/PIMA
CZ1469 COUNTRY - US
CZ1469 USGS QUAD - TUCSON (1992)
CZ1469
CZ1469 *CURRENT SURVEY CONTROL
CZ1469 ______________________________________________________________________
CZ1469* NAD 83(1986) POSITION- 32 13 24.19 (N) 110 58 25.04 (W) HD_HELD1
CZ1469* NAVD 88 ORTHO HEIGHT - 723.856 (meters) 2374.85 (feet) ADJUSTED
CZ1469 ______________________________________________________________________
CZ1469 GEOID HEIGHT - -29.272 (meters) GEOID18
CZ1469 DYNAMIC HEIGHT - 722.864 (meters) 2371.60 (feet) COMP
CZ1469 MODELED GRAVITY - 979,245.9 (mgal) NAVD 88
CZ1469
CZ1469_MARKER: DV = VERTICAL CONTROL DISK
CZ1469_SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES
CZ1469_SP_SET: FOOTING
CZ1469_STAMPING: U 19 RESET 1977
CZ1469_MARK LOGO: NGS
CZ1469_MAGNETIC: N = NO MAGNETIC MATERIAL
CZ1469_STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO
CZ1469+STABILITY: SURFACE MOTION
CZ1469_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
CZ1469+SATELLITE: SATELLITE OBSERVATIONS - March 16, 2006
CZ1469
CZ1469 HISTORY - Date Condition Report By
CZ1469 HISTORY - 1977 MONUMENTED NGS
CZ1469 HISTORY - 1979 GOOD NGS
CZ1469 HISTORY - 19950110 GOOD USPSQD
CZ1469 HISTORY - 19950924 MARK NOT FOUND USPSQD
CZ1469 HISTORY - 19990304 GOOD NGS
CZ1469 HISTORY - 20020403 GOOD USPSQD
CZ1469 HISTORY - 20060316 GOOD USPSQD
CZ1469 HISTORY - 20070528 GOOD GEOCAC
Condition: Mark found in good condition

Designation: U 19 RESET (actual stamping is "U 19 RESET 1977")

Benchmark Agency: National Geodetic Survey

Monumentation type: Vertical Control Mark

County: Pima County

USGS 7.5' Topographic Quadrangle Name (optional): Tuscon

Find type: Coordinates and/or to-reach information from the NGS database (or Geocaching's copy of it) were used

Web address of this benchmark's datasheet (optional): [Web Link]

NGS PID: CZ1469

Benchmark Agency (if other): Not listed

Monumentation type (if other): Not listed

Special category (optional): Not listed

Special Category (if other): Not listed

Local database's URL (optional): Not listed

Visit Instructions:
  1. A closeup photo of the mark taken by you is required.
  2. A 'distant' photo including the mark in the view is highly recommended. Include the compass direction you faced when you took the picture.
Search for...
Geocaching.com Google Map
Google Maps
MapQuest
Bing Maps
Nearest Waymarks
Nearest U.S. Benchmarks
Nearest Geocaches
Create a scavenger hunt using this waymark as the center point
Recent Visits/Logs:
Date Logged Log User Rating  
Raven visited CZ1469 - "U 19 RESET" vertical control mark - Tucson, AZ 09/07/2019 Raven visited it