MW0822 - USC&GS 'QUAKING ASP AZ MK' Azimuth Mark - Modoc County, CA
Posted by: Groundspeak Premium Member NW_history_buff
N 41° 50.708 W 120° 53.673
10T E 674794 N 4634724
This Azimuth Mark is located on a dirt track road a little north of Clear Lake Reservoir Rd.
Waymark Code: WMT186
Location: California, United States
Date Posted: 09/07/2016
Published By:Groundspeak Premium Member Ernmark
Views: 2

I recovered this U.S. Coast & Geodetic Survey Azimuth Mark from 1948 in good condition. This AZ mark appears on a topography map as 'BM 4904'. The NGS datasheet description is adequate for station recovery with the exception that the sign for the road leading to Bird Spring is gone. You will also have to pass through a wire gate not far from Clear Lake Reservoir Rd. My posted coordinates should place you pretty close to this mark.

NGS datasheet info:

01/01/1948 by CGS (MONUMENTED)

THE AZIMUTH MARK IS A STANDARD AZIMUTH MARK DISK THAT HAS BEEN WELDED TO THE TOP OF A 3 FOOT LENGTH OF 1 INCH IRON PIPE. IT IS 32 FEET SOUTH OF THE CENTERLINE OF THE TRACK ROAD LEADING TO BIRD SPRING, 45 FEET WEST OF A TRIANGULAR BLAZED JUNIPER TREE AND IS ON THE WEST SLOPE OF A LOW RIDGE. THE DISK IS STAMPED QUAKING ASP 1948 AND PROJECTS 5 INCHES ABOVE THE GROUND. TO REACH THE MARK FROM THE STATION GO EAST OFF THE HILL FOR ABOUT 0.5 MILE TO THE ROAD. TURN LEFT AND FOLLOW THE ROAD FOR 0.8 MILE TO A FORK AND A SIGN BIRD SPRING. TURN LEFT AS PER SIGN BIRD SPRING AND GO 0.45 MILE TO THE MARK ON THE RIGHT AS DESCRIBED.
Condition: Mark found in good condition

Designation: QUAKING ASP AZ MK

Benchmark Agency: U.S. Coast & Geodetic Survey

Monumentation type: AZIMUTH MARK Disk

County: Modoc County

USGS 7.5' Topographic Quadrangle Name (optional): Pothole Valley (1993)

Find type: Searched @ "BM" on a topographic map

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

NGS PID: MW0822

Local database's URL (optional): [Web Link]

Benchmark Agency (if other): Not listed

Monumentation type (if other): Not listed

Special category (optional): Not listed

Special Category (if other): 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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