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Details for Benchmark: SQ0580

N 47° 34.099 W 107° 47.124 (NAD 83)

Altitude: 2632.1

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

Location:
In PHILLIPS county, MT View Original Datasheet
Designation:
LAKE
Marker Type:
pipe cap
Setting:
setting not listed - see description
Stability:
Mark of questionable or unknown stability.

Reference Points

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Station is about 14 feet northeast of MORC WILSON.

[Photos:]
photoSQ0580 COE LAKE 1937
MUST NOT OF HAD THE NUMBERS FOR MORC WILSON 14 FT TO THE SW
photoSQ0580 SW TO MORC WILSON
LAST CALL TO LEGG (PO #3) --- AND 1-1/2 MILES NORTHWEST OF THE LEGG POST OFFICE EXCEPT THAT DOWNSTREAM OF LEGG IS NORTHEAST OF LEGG

Documented History (by the NGS)

01/01/1937 by USE (MONUMENTED)
DESCRIBED BY US ENGINEERS 1937 THE STATION IS IN PHILLIPS COUNTY ON THE LEFT BANK OF THE MISSOURI RIVER AND IS ABOUT 1/4 MILE EAST OF THE CENTER OF SECTION 19, T. 21 N., R. 31 E. THE STATION IS ABOUT 7-3/4 MILES DUE SOUTH OF THE LONG X RANCH AND 1-1/2 MILES NORTHWEST OF THE LEGG POST OFFICE ON A LOW, BALD SHALE BUTTE ABOUT 1 MILE NORTH OF THE SHARP BEND IN THE MISSOURI RIVER JUST BELOW THE LEGG POST OFFICE. TO REACH THE STATION BY AUTOMOBILE, PROCEED ON THE MALTA TO MUSSELSHELL FERRY ROAD VIA SUN PRAIRIE TO THE LONG X RANCH AND FORK IN THE ROAD. TAKE RIGHT FORK, CROSS SMALL STREAM AND CONTINUE SOUTHWEST OF WHITE FARMHOUSE. FROM BRIDGE PROCEED SOUTH ON VERY ROUGH ROAD PAST FENCED PASTURE ON LEFT TO A POINT ABOUT 1 MILE SOUTH OF FENCE CORNER OF LEFT. LEAVE THE MAIN ROAD HERE AND PROCEED SOUTHEAST ON VERY DIM ROAD TO TOP OF HIGH DIVIDE. CONTINUE ON DIM TRAIL ALONG TOP OF RIDGE PAST OLD ABANDONED CABIN ON RIGHT THENE ALONG RIDGE ROAD ABOUT 1 MILE TO SMALL BARREN BUTTE AND STATION. A MONUMENT IS 3 IN IRON PIPE WITH BRONZE CAP AND IS SITUATED VERY NEAR OLD 5 IN IRON PIPE OF M.R.C. STATION WILSON. A 4.5 FOOT STAND WITH 14-FOOT TARGETS WILL CLEAR ALL LINES.

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  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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