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Details for Benchmark: SV1553

N 47° 53.499 W 116° 31.794 (NAD 83)

Altitude: 5640

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

Location:
In KOOTENAI county, ID View Original Datasheet
Designation:
CHILCO
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:

Reference Points

Must Read!

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Stumbled over this benchmark while out hiking.

Hope this is the right mark - we found three up on this peak today. I find it confusing trying to ID them from the descriptions. If someone can tutor me on this please email me! It was a gorgeous day for a hike and for a change, I remembered to look for benchmarks!! Moose and Squirrel, Spirit Lake, ID.

[Photos:]
photoBenchmark 1 of 3, Chilco Peak, May 29,2005
Benchmark 1 of 3, Chilco Peak, May 29,2005

Found it easier than the other mark. Got a picture of this one before my camera ran out of juice. Some one tried to pry the bottom edge and it is pulled up but it is hard to see in the picture.

[Photos:]
photoN Chilco BM
Bottom corner is pulled up as someone tried to pry it up.

Benchmark was recovered in fair condition. Reference mark was not loacted. Someone has attempted to pry the benchmark from its foundation and the eastern one third of the mark is bent upwards. The lookout tower which previously hid the benchmark no longer exists so locating the disk was fairly simple.

Found while searching for the nearby 'North Chilco Peak' geocache. As the lookout tower no longer exists, this was easy to find.

[Photos:]
photoStation mark

Documented History (by the NGS)

01/01/1936 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1936 (LCJ) STATION IS 9 MILES (AIR LINE) SE OF THE TOWN OF ATHOL, ON THE S AND HIGHEST PART OF THE HILL WHICH IS GRASS AND BRUSH COVERED TO THE SADDLE NEAR SUMMIT, WHILE THE TOP OF THE HILL IS COMPOSED OF LOOSE SLAG ROCK. STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS WEDGED IN DRILL HOLES IN OUTCROPPING BEDROCK. STATION CAN BE REACHED FROM ATHOL BY GOING E ON GRAVEL ROAD JUST N OF THE SCHOOLHOUSE FOR 4.5 MILES, TURN RIGHT, GO 2.0 MILES, TURN LEFT, GO 1.6 MILES AND TAKE RIGHT FORK, GO 0.2 MILE AND PASS THROUGH FOREST PATROL REGISTRY GATE, CONTINUE FOR 4.2 MILES, KEEP RIGHT FORK (LEFT LEADS TO BERNARD PEAK LOOKOUT). GO 1.2 MILES TO GOLD SPRING (WATER AND CAMP SITE). CONTINUE 0.6 MILE TO THE END OF TRUCK TRAVEL AT THE FOOT OF CHILCO MOUNTAIN TRAIL. GO UP THE TRAIL FOR 1/4 MILE AND TAKE THE RIGHT HAND TRAIL, GO 300 FEET, TAKE LEFT TRAIL AND CONTINUE ON TO STATION. A PACK OF 1-1/4 HOURS. STOCK CAN BE TAKEN CLOSE TO THE STATION.
01/01/1938 by USGS (MONUMENTED)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1938 STATION MARK, STAMPED CHILCO MT. 1936, ONE REFERENCE MARK AND TWO CROSSES CUT ON ROCK WERE FOUND IN GOOD CONDITION. A SECOND STANDARD C. AND G.S. REFERENCE MARK TABLET, STAMPED CHILCO MT. 1936, WAS FOUND UNSET UPON THE SUMMIT. THIS TABLET WAS CEMENTED IN CRACK IN ROCK BY RECOVERY PARTY, AND IS 18.39 FEET FROM STATION MARK IN TRUE AZIMUTH 124 DEG 23 MIN.
01/01/1940 by CGS (MONUMENTED)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1940 (ANS) STATION IS IN THE COEUR D ALENE NATIONAL FOREST ABOUT 18.5 MILES NE OF COEUR D ALENE, 9.0 MILES SE OF ATHOL, AND 10.0 MILES E OF THE CHILCO POST OFFICE ON THE HIGHEST PART OF CHILCO MOUNTAIN. STATION AND 1936 REFERENCE MARK RECOVERED IN GOOD CONDITION AS DESCRIBED. THE REFERENCE MARK SET IN 1938 BY U.S.G.S. WAS NOT FOUND. ONE WITNESS CROSS IN ROCK SW WAS RECOVERED. THE WITNESS CROSS TO THE N WAS NOT FOUND. A LOOKOUT TOWER WAS BUILT ON THIS PEAK AND THE STATION MARK IS UNDER STEPS SO THAT IS CANNOT BE USED. CHILCO 2 1940 WAS ESTABLISHED NEARBY.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in July 1992.
  • The orthometric height was scaled from a topographic map.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.