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Details for Benchmark: TN0865

N 48° 35.578 W 114° 51.089 (NAD 83)

Altitude: 5491

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

Location:
In FLATHEAD county, MT View Original Datasheet
Designation:
SUNDAY
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:

Reference Points

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Documented History (by the NGS)

01/01/1959 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (OSR) THE STATION IS ON THE HIGHEST POINT OF SUNDAY MOUNTAIN AT THE SITE OF THE SUNDAY MOUNTAIN LOOKOUT TOWER. THE MOUNTAIN IS HEAVILY TIMBERED. IT IS ABOUT 7-3/4 MILES SOUTH AND 1 MILE EAST OF TREGO, 7-1/2 MILES SOUTH AND 2-1/2 MILES WEST OF THE SOUTHEAST END OF DICKEY LAKE, 23-1/2 MILES WEST AND 12-1/2 MILES NORTH OF WHITEFISH AND IN SECTION 29, T 33 N, R 25 W. TO REACH THE STATION FROM THE POST OFFICE IN TREGO, GO SOUTH AND WEST ON GRAVELED ROAD FOR 0.45 MILE TO A SIDE ROAD LEFT AND SIGN FORTUNE CR ROAD AND OTHERS, TURN LEFT AND GO SOUTH FOR 3.35 MILES TO A FORK AND SIGN PINKHAM L.O.T. AND OTHERS, TAKE THE LEFT ROAD AND GO 3.45 MILES TO A FORK, TAKE THE LEFT ROAD AND GO 4.15 MILES TO A FORK, TAKE THE LEFT ROAD AND GO 4.55 MILES TO A FORK, TAKE THE LEFT ROAD AND GO 0.45 MILE TO A LOGGING ROAD RIGHT AND THE END OF GRADED ROAD, CONTINUE AHEAD ON TRACK ROAD FOR 2.55 MILES TO A CURVE TO THE RIGHT AND SIGN ON LEFT 1.5 SUNDAY L.O.T., CONTINUE ON TRACK ROAD FOR 1.2 MILES TO THE TOP OF THE HILL AND THE STATION ON THE LEFT. THE STATION MARK IS A STANDARD DISK, STAMPED SUNDAY 1959, CEMENTED IN A DRILL HOLE IN THE TOP OF A 5 X 6 FOOT EXPOSED AREA OF BEDROCK PROJECTING ABOUT 12 INCHES. IT IS 196 FEET WEST OF THE NORTHWEST CORNER OF A LOG CABIN, 190 FEET WEST-SOUTHWEST OF THE NORTHWEST LEG OF THE LOOKOUT TOWER AND 56 FEET NORTH-NORTHWEST OF THE CENTER OF THE ROAD LEADING TO THE LOOKOUT TOWER. REFERENCE MARK 1 IS A STANDARD DISK, STAMPED SUNDAY NO 1 1959, CEMENTED IN A DRILL HOLE IN THE TOP OF A 3 X 4 FOOT EXPOSED AREA OF BEDROCK PROJECTING ABOUT 5 INCHES. IT IS 74 FEET SOUTHWEST OF THE SOUTHWEST LEG OF THE LOOKOUT TOWER, 61 FEET SOUTHWEST OF THE NORTHWEST CORNER OF THE LOG CABIN AND 12 FEET SOUTH OF THE CENTER OF THE ROAD LEADING TO THE LOOKOUT TOWER. REFERENCE MARK 2 IS A STANDARD DISK, STAMPED SUNDAY NO 2 1959, CEMENTED IN A DRILL HOLE IN THE TOP OF A 2 X 10 FOOT EXPOSED AREA OF BEDROCK PROJECTING ABOUT 6 INCHES. IT IS 120 FEET NORTH-NORTHWEST OF THE CENTER OF THE ROAD LEADING TO THE LOOKOUT TOWER. A MEASUREMENT WAS MADE TO THE DETERMINED CENTER OF THE BASE OF THE LOOKOUT TOWER. NO SUITABLE LOCATION COULD BE FOUND FOR AN AZIMUTH MARK.
01/01/1960 by CGS (MONUMENTED)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (OSR) STATION RECOVERED AS DESCRIBED IN 1959.
01/01/1963 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1963 (JTD) STATION MARK- STANDARD USC AND GS DISK STAMPED, -SUNDAY 1959-, CEMENTED IN A DRILL HOLE IN BEDROCK.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in July 1992.
  • 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.