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Details for Benchmark: NY0773

N 42° 23.301 W 120° 14.084 (NAD 83)

Altitude: 7541

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

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

Reference Points

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Documented History (by the NGS)

01/01/1948 by USFS (MONUMENTED)
DESCRIBED BY US FOREST SERVICE 1948 (MTP) THE STATION IS ON THE SUMMIT OF ABERT RIM ABOUT 7 MILES SOUTH-SOUTHEAST OF VALLEY FALLS, 15 MILES NORTH-NORTHEAST OF LAKEVIEW, AND 4 MILES EAST OF U.S. HIGHWAY 395. THE STATION MARK IS SET IN A DEPRESSION OF A 6X18 INCH BED ROCK PROJECTING 2 INCHES ABOVE THE SURFACE OF THE GROUND. IT IS 16 FEET EAST OF THE WEST EDGE OF THE RIM ROCK, 12 FEET SOUTHWEST OF THE SOUTHEAST CORNER OF THE ABERT RIM LOOKOUT LIVING QUARTERS, AND 4 FEET SOUTH OF THE SOUTH SIDE OF THE LIVING QUARTERS. THE STATION MARK IS A U.S. DEPARTMENT OF AGRICULTURE FOREST SERVICE MARK STAMPED ABERT RIM 1935. REFERENCE MARK NO. 1 IS SET FLUSH IN A 2X3 FOOT BOULDER PROJECTING 10 INCHES ABOVE THE SURFACE OF THE GROUND. IT IS 35 FEET EAST OF THE WEST EDGE OF THE RIM ROCK, 12 FEET SOUTHEAST OF THE SOUTHEAST CORNER OF THE LOOKOUT LIVING QUARTERS, AND IS ON THE EAST EDGE OF A PATHWAY LEADING TO THE LIVING QUARTERS. IT IS STAMPED ABERT RIM NO 1 1948 (USFS). REFERENCE MARK NO. 2 IS A STANDARD DISC SET FLUSH IN A 5X5X3 BOULDER PROJECTING 3 FEET ABOVE THE SURFACE OF THE GROUND. IT IS 32 FEET SOUTH-SOUTHEAST OF THE SOUTHEAST CORNER OF THE LOOKOUT LIVING QUARTERS, AND 16 FEET EAST OF THE WEST EDGE OF THE RIM ROCK. IT IS STAMPED ABERT RIM 1948 NO 2 (USFS). AS NO AZIMUTH MARK WAS ESTABLISHED FOR THIS STATION THE APEX OF THE DRAKE PEAK LOOKOUT WAS USED. IT IS ABOUT 7 MILES SOUTHEAST OF THE STATION AND AT THE SUMMIT OF DRAKE PEAK. TO REACH FROM THE JUNCTION OF U.S. HIGHWAY 395 AND STATE HIGHWAY 66, GO NORTH ON HIGHWAY 395 FOR 11.3 MILES, TAKE RIGHT FORK AS PER SIGN ABERT RIM L.O.9 AND GO 0.2 MILE, CONTINUE STRAIGHT AHEAD FOR 0.9 MILE, TAKE LEFT FORK AT SIGN ABERT RIM L.O. 7 AND GO 1.7 MILES, TAKE RIGHT FORK AS PER SIGN ABERT RIM L.O. 6 AND GO 4.4 MILES TO SIGN ABERT RIM L.O. 2, HERE TAKE LEFT FORK AND GO AS PER SIGN FOR 1.9 MILES TO THE LOOKOUT TOWER. THE STATION IS LOCATED 165.2 FEET EAST OF THE TOWER AS DESCRIBED.
01/01/1977 by NGS (MONUMENTED)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1977 (CLN) NOT OCCUPIED THIS DATE PREVIOUS DESCRIPTION FOUND IN BOOK NO. 987, PAGE 7. THE STATION MARK, AND BOTH REFERENCE MARKS WERE RECOVERED IN GOOD CONDITION. THE 1948 DESCRIPTION IS ADEQUATE WITH THE FOLLOWING ADDITIONS. THE ABERT RIM LOOKOUT TOWER HAS BEEN REMOVED, BUT THE FOUR CONCRETE FOUNDATION BLOCKS FOR THE TOWER LEGS ARE STILL IN PLACE, AND THE STATION IS WEST OF SITE OF THE FORMER LOOKOUT, RATHER THAN EAST AS DESCRIBED IN THE 1948 DESCRIPTION. LANDMARKS HAVE CHANGED, AND THE ORIGINAL TO REACH IS OBSOLETE. A NEW TO REACH FOLLOWS. TO REACH THE STATION FROM THE LAKEVIEW POST OFFICE GO NORTH ON G STREET FOR 0.25 MILE TO THE JUNCTION WITH U.S. HIGHWAY 395, AND STATE HIGHWAY 140, GO NORTH ON U.S. HIGHWAY 395 FOR 12.2 MILES TO A SIDE ROAD RIGHT, TURN RIGHT, AND GO NORTHEAST FOR 0.2 MILE TO A FORK, TAKE THE LEFT FORK, AND CONTINUE NORTHEASTERLY FOR 0.9 MILE TO A FORK, TAKE THE LEFT FORK AS PER SIGN, ABERT RIM L.O. 7, AND GO NORTHEAST FOR 1.6 MILES TO A FORK, TAKE THE RIGHT FORK, AND GO NORTHEAST FOR 3.4 MILES TO A CROSSROAD. TURN RIGHT AS PER SIGN, ABERT RIM L.O. 3, AND GO SOUTHEAST FOR 0.9 MILE TO A REVERSE Y, TURN SHARP LEFT AS PER SIGN, SHERMAN VALLEY 1, AND GO NORTH FOR 0.35 MILE TO A SIDE ROAD LEFT. TURN LEFT AS PER SIGN, DEAD END 3, AND GO NORTHWEST FOR 2.7 MILES TO THE END OF THE ROAD, AND THE STATION WEST OF THE SITE OF THE FORMER LOOKOUT TOWER. AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 15 MILES NNE OF LAKEVIEW.

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.

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