GR1860 A I -- Hoover Dam, AZ
Posted by: Groundspeak Premium Member Benchmark Blasterz
N 36° 00.904 W 114° 44.237
11S E 703911 N 3987987
One of three concrete pier benchmarks on the Arizona side of Boulder Canyon at Hoover Dam.
Waymark Code: WMMD8A
Location: Arizona, United States
Date Posted: 09/03/2014
Published By:Groundspeak Premium Member Ernmark
Views: 37
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This is one of three BOR concrete pier benchmarks on the Arizona side of Boulder Canyon downstream from Hoover Dam. There is no public access to them, but this one can be spotted with a long camera lens from the location of the Arizona Base benchmark disk.

From the NGS Datasheet:

"GR1860 DESIGNATION - A I
GR1860 PID - GR1860
GR1860 STATE/COUNTY- AZ/MOHAVE
GR1860 COUNTRY - US
GR1860 USGS QUAD - HOOVER DAM (1997)
GR1860
GR1860 *CURRENT SURVEY CONTROL
GR1860 ______________________________________________________________________
GR1860 NAD 83 POSITION- 36 00 54.22410(N)114 44 14.21705(W)ADJUSTED
GR1860
GR1860_U.S. NATIONAL GRID SPATIAL ADDRESS: 11SQV0391187987(NAD 83)
GR1860
GR1860_MARKER: DS = TRIANGULATION STATION DISK
GR1860_SETTING: 0 = UNSPECIFIED SETTING
GR1860_STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY
GR1860_SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR
GR1860+SATELLITE: SATELLITE OBSERVATIONS - August 10, 2014
GR1860
GR1860 HISTORY - Date Condition Report By
GR1860 HISTORY - 1935 MONUMENTED BOR
GR1860 HISTORY - 1990 GOOD USPSQD
GR1860 HISTORY - 20140810 GOOD GEOCAC
GR1860
GR1860 STATION DESCRIPTION
GR1860
GR1860'DESCRIBED BY US BUREAU OF RECLAMATION 1935
GR1860'STATION IS A THREE-SIDED CONCRETE PIER 5 FEET HIGH, LOCATED
GR1860'ON THE ARIZONA SIDE OF THE CANYON ABOUT 250 FEET DOWNSTREAM
GR1860'FROM THE END OF HOOVER DAM, WITH A STANDARD USC AND GS STATION
GR1860'MARK SET FLUSH WITH THE TOP OF THE PIER.
GR1860
GR1860 STATION RECOVERY (1990)
GR1860
GR1860'RECOVERY NOTE BY US POWER SQUADRON 1990 (MG)
GR1860'RECOVERED IN GOOD CONDITION.
GR1860
GR1860 STATION RECOVERY (2014)
GR1860
GR1860'RECOVERY NOTE BY GEOCACHING 2014 (LPC)
GR1860'RECOVERED IN GOOD CONDITION."
Condition: Mark found in good condition

Designation: -blank-

Benchmark Agency: Bureau of Reclamation

Monumentation type: TRIANGULATION STATION Disk

County: Mohave Co AZ

USGS 7.5' Topographic Quadrangle Name (optional): Hoover Dam

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: GR1860

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.
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Recent Visits/Logs:
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22Bongo visited GR1860 A I -- Hoover Dam, AZ 04/02/2022 22Bongo visited it
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Ernmark visited GR1860 A I -- Hoover Dam, AZ 09/24/2003 Ernmark visited it
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