Details for Benchmark: RA1340
N 45° 26.270 W 116° 39.704 (NAD 83)
Coordinates may not be exact. Altitude is VERTCON and location is ADJUSTED. (more info)
- In WALLOWA county, OR View Original Datasheet
- HAT POINT
- Marker Type:
- NGS Benchmark
- setting not listed - see description
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Documented History (by the NGS)
|01/01/1945 by USFS (MONUMENTED)
|DESCRIBED BY US FOREST SERVICE 1945 (JTJ)
THE STATION IS LOCATED ON THE SUMMIT OF HAT POINT, IN THE WALLOWA NATIONAL FOREST, 12 MILES SE OF IMNAHA, AND 3-1/2 MILES W OF THE SNAKE RIVER. IT IS A U.S. FOREST SERVICE TRIANGULATION STATION BRONZE DISK SET FLUSH IN A BOULDER BENEATH THE HAT POINT LOOKOUT TOWER AND IS STAMPED HAT POINT L.O.T. NEW 1937.
REFERENCE MARK 1 IS 34.79 FEET SE OF THE STATION, 23.5 FEET SE OF THE SE LEG OF THE LOOKOUT TOWER, AND 27 FEET E OF THE DIRECTION POLE. IT IS A BRONZE REFERENCE DISK IN OUTCROPPING BEDROCK, STAMPED HAT POINT L O T NO 1 1945, AND PROJECTS 6 INCHES.
REFERENCE MARK 2 IS 54.65 FEET SE OF THE STATION, 25 FEET SW OF THE DIRECTION POLE, AND 16-1/2 FEET E OF A GUY WIRE. IT IS A BRONZE REFERENCE DISK IN OUTCROPPING BEDROCK, STAMPED HAT POINT USFS NO 2 1945, AND PROJECTS 8 INCHES.
HAT POINT, OLD U.S.F.S. MARK, IS 17.65 FEET S OF THE STATION. IT IS SET FLUSH IN OUTCROPPING ROCK AT THE E SIDE OF AN OLD STUMP AND IT IS STAMPED HAT POINT OLD L.O.T. 1937.
THE AZIMUTH MARK IS APPROXIMATELY 0.6 MILE BY ROAD SW OF THE STATION. IT IS SITUATED ON THE E END OF A ROCKY POINT OVERLOOKING THE SNAKE RIVER AND 7 FEET N OF A CAIRN. IT IS A BRONZE AZIMUTH DISK SET FLUSH IN OUTCROPPING ROCK AND IS STAMPED HAT POINT USFS 1945. TO REACH FROM THE STATION, GO SW ON THE MAIN TRAVELED ROAD FOR 0.6 MILE, TURN LEFT OFF THE MAIN TRAVELED ROAD, AND GO E FOR 0.1 MILE TO THE MARK AS DESCRIBED.
TO REACH THE STATION FROM IMNAHA, FOLLOW A FOREST SERVICE ROAD UP A STEEP GRADE AS PER SIGNS HAT POINT LOOKOUT FOR 24.3 MILES TO THE END OF THE ROAD AND THE STATION AS DESCRIBED.
- 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- The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)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.