Vertical Control Mark Q 510 - Coulee Dam, WA
Posted by: Groundspeak Premium Member T0SHEA
N 47° 57.937 W 118° 58.818
11T E 352182 N 5314376
At the eastern end of the Coulee Dam Bridge, a large truss bridge, an NRHP site built by the PWA, is where one will find Q 510.
Waymark Code: WMYCT1
Location: Washington, United States
Date Posted: 05/30/2018
Published By:Groundspeak Premium Member NW_history_buff
Views: 1
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The disk is in the north sidewalk, just off the east end of the bridge proper, near the north edge of the sidewalk and near the large concrete pillar with an old fashioned lamp post atop.

STATION DESCRIPTION
DESCRIBED BY NATIONAL GEODETIC SURVEY 1981

DESIGNATION -  Q 510
PID         -  SW1023
STATE/COUNTY-  WA/OKANOGAN
COUNTRY     -  US
USGS QUAD   -  GRAND COULEE DAM (1989)
MARKER: DV = VERTICAL CONTROL DISK
SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE
SET: SIDEWALK ATTACHED TO ABUTMENT
STAMPING: Q 510 1981
MARK LOGO: NGS

AT COULEE DAM, IN TOP OF THE NORTH EDGE OF THE NORTH SIDEWALK OVER THE EAST ABUTMENT OF THE STEEL BRIDGE OVER THE COLUMBIA RIVER, 1.9 KM (1.15 MI) NORTHEAST OF THE WEST END OF THE COULEE DAM, 1.8 METERS (6 FT) NORTH OF THE NORTH CURB OF THE BRIDGE, 1.4 METERS (4.5 FT) EAST OF THE EAST EDGE OF THE OF THE NORTHEAST CONCRETE GUARD RAIL, 1.5 METERS (5 FT) NORTHEAST OF THE NORTHEAST CORNER OF THE NORTHEAST STEEL GIRDER.
THE MARK IS 0.2 M ABOVE THE HIGHWAY.
From the NGS Datasheet
Condition: Mark found in good condition

Designation: Q 510 1981

Benchmark Agency: National Geodetic Survey

Monumentation type: Vertical Control Mark

County: Okanogan

USGS 7.5' Topographic Quadrangle Name (optional): GRAND COULEE 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: SW1023

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
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