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Details for Benchmark: RC2264

N 45° 21.041 W 121° 48.929 (NAD 83)

Altitude: 4973

Coordinates may not be exact. Altitude is VERTCON and location is ADJUSTED. (more info)

Location:
In CLACKAMAS county, OR View Original Datasheet
Designation:
ZIGZAG
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:

Reference Points

Must Read!

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we only found the reference mark that others have mistaken for the benchmark

found it on a boulder after triping over it

[Photos:]
photowe found it

Found the benchmark while hiking in the area. Description from previous finders is still accurate. -Pdxbhoy

7/16/04 @ 1629. Found while leaving East Zig Zag Lookout.

[Photos:]
photoBenchmark near Est Zig Zag Lookout.JPG

We knew one was up here but not quite sure where and stumbled right over it. Can hardly read it but we knew what it was!!

[Photos:]
photoZigZag 007.jpg

Could barely make out the 'ZIGZAG' on this benchmark. It's really been hammered on.

N 45° 21.045 W 121° 48.936

Found it while looking for a GeoCache. Looks like someone tried to pry it off unsuccessfully. Stamping is too scratched up to much to read. See photo

[last edit: 8/15/2003 11:32:52 PM PST]

[last edit: 8/15/2003 11:33:38 PM PST]

[Photos:]
photoRC2264

Documented History (by the NGS)

01/01/1953 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1953 (LGT) THE STATION IS LOCATED ABOUT 6 MILES EAST OF THE SMALL VILLAGE OF ZIGZAG, ABOUT 6 MILES WEST-SOUTHWEST OF MOUNT HOOD AND ABOUT 4 MILES NORTHWEST OF GOVERNMENT CAMP. IT IS ON THE EAST END OF ZIGZAG MOUNTAIN, NEAR THE LOOKOUT HOUSE, AND IS LOCALLY KNOWN AS EAST ZIGZAG MOUNTAIN. IT IS IN THE MOUNT HOOD NATIONAL FOREST. TO REACH FROM THE POST OFFICE IN RHODODENDRON, GO EASTERLY ON U.S. HIGHWAY 26 FOR 1.6 MILES TO A ROAD LEFT AT A SIGN ON THE RIGHT ZIGZAG MT RD 6. TURN LEFT ON A GRAVEL ROAD AND GO 0.6 MILE TO A FORK. TURN SHARP LEFT AND FOLLOW DIRT ROAD FOR 3.0 MILES TO A SHARP LEFT TURN IN THE ROAD IN A BURNED OVER AREA AND LOG LOADING AREA. TURN LEFT AND CONTINUE ON DIRT ROAD FOR 3.3 MILES TO A FOREST SERVICE PARK AND PICNIC AREA AT THE END OF TRUCK TRAVEL AND THE AZIMUTH MARK. THE STATION MARK, A STANDARD DISK STAMPED ZIGZAG 1953, IS 17.3 FEET WEST-NORTHWEST OF THE SOUTHWEST CORNER OF THE LOOKOUT HOUSE, 17.9 FEET WEST OF THE NORTHWEST CORNER OF THE LOOKOUT HOUSE AND 7.1 FEET EAST OF THE FLAG POLE. THE MARK IS SET IN THE TOP OF A LONG, NARROW BOULDER THAT PROJECTS 4 INCHES ABOVE THE GROUND. REFERENCE MARK 1, A STANDARD DISK STAMPED ZIGZAG NO 1 1953, IS SET IN THE TOP OF A BOULDER THAT PROJECTS 3 INCHES ABOVE THE GROUND. THE MARK IS 6 INCHES HIGHER THAN THE STATION MARK AND 2 FEET WEST OF THE WEST SIDE OF THE LOOKOUT HOUSE. REFERENCE MARK 2, A STANDARD DISK STAMPED ZIGZAG NO 2 1953, IS SET IN THE EAST FACE OF A BOULDER THAT PROJECTS ABOUT 6 INCHES ABOVE THE GROUND. THE MARK IS APPROXIMATELY 2 FEET LOWER THAN THE STATION MARK. THE AZIMUTH MARK, A STANDARD DISK STAMPED ZIGZAG 1953, IS BRAZED TO THE TOP OF A 2-INCH SOIL PIPE THAT PROJECTS ABOUT 6 INCHES ABOVE THE GROUND. IT IS ABOUT 56 YARDS WEST OF THE EAST ZIGZAG MTN. TRAIL SIGN, ABOUT 35 YARDS EAST-NORTHEAST OF THE ENTRANCE TO THE PICNIC AREA, ABOUT 17 YARDS NORTH OF THE NORTH EDGE OF THE ROAD AND 30 INCHES EAST OF A 4X4-INCH WITNESS POST. THE LOOKOUT HOUSE IS THE PROPERTY OF THE U.S. FOREST SERVICE AND IS A GRAY, ONE ROOM, FRAME STRUCTURE THAT IS 13 1/2X13-1/2 FEET SQUARE AND APPROXIMATELY 13 FEET HIGH. THE POINT OF THE SPIRE WAS INTERSECTED AND MEASURED TO. A 1-1/2 HOUR PACK. THE END OF TRUCK TRAVEL MAY BE DIFFICULT TO REACH IN WET WEATHER. THE TRAIL FROM THE END OF TRUCK TRAVEL TO THE LOOKOUT HOUSE IS WELL MARKED.
01/01/1970 by NGS (MONUMENTED)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1970 (LFS) THE STATION MARK, AND REFERENCE MARK NO. 2 WERE RECOVERED AS DESCRIBED. THE DISK FOR REFERENCE MARK NO. 1 HAD BEEN PRIED OFF BY SOME IRRESPONSIBLE PARTY LEAVING THE STEM SOLIDLY MOORED, AND PLAINLY VISIBLE IN THE BOULDER. THE AZIMUTH MARK WAS SEARCHED FOR BUT NOT RECOVERED. THE LOOKOUT HOUSE HAS BEEN DESTROYED, BUT THE FOUNDATION REMAINS. THE FOLLOWING IS AN ALTERNATE TO REACH. TO REACH THE STATION FROM THE RHODODENDRON POST OFFICE GO EAST ON U.S. HIGHWAY 26 FOR 1.6 MILES TO ROAD 27 ON THE LEFT, TURN LEFT, AND GO NORTHEAST, PARALLELING THE RIVER FOR 0.6 MILE TO FOREST SERVICE ROAD S 24 ON THE LEFT, AND SIGN, DEVILS MEADOW CAMP GROUND 6 1/2, TURN LEFT AS PER SIGN, AND GO NORTHEASTERLY ON FOREST SERVICE ROAD S 24 FOR 6.6 MILES TO THE CAMP GROUND, THE END OF THE ROAD, AND THE END OF TRUCK TRAVEL. PACK NORTHEAST ON THE WELL MARKED, OPEN TRAIL TO THE SUMMIT AND THE STATION. LENGTH OF PACK IS 1-1/2 HOURS. AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 5 MILES NORTHEAST OF RHODODENDRON.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in October 1991.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.