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Details for Benchmark: PR0977

N 44° 27.897 W 096° 57.331 (NAD 83)

Altitude: 1759

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

Location:
In BROOKINGS county, SD View Original Datasheet
Designation:
OAKWOOD LAKE RESET
Marker Type:
azimuth mark disk
Setting:
surrounded by a mass of concrete
Stability:

Reference Points

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Was looking for a geocache by the nearby Oakwood Lakes State Park sign when I spotted the Azmith Mark disc located at ground level just southwest of the sign. It was stamped with two dates: I think 1903 and 1974. Looked across the road to see if I could see any sign of the triangulation station itself. Didn't know that it was located about a mile away.

The disk pictured in the previous log is the Azimuth mark set in 1971 to provide orientation from the triangulation station that is most of a mile away on a ridge. The description calls for an azimuth mark about where this is found, on the order of a mile from the main station that needs to be found for logging.

This is not PR0977 OAKWOOD LAKE RESET. There is no reason to doubt the ADJUSTED coordinates of PR0977 that do fall on the ridge. PR0977 is in a square concrete post, and this one is round. The reset of PR0977 used a standard triangulation disk, not an azimuth disk like the original 1903 one did.

The latest NGS data sheet says that a professional reported PR0977 on the ridge as being destroyed. Nothing logged here disproves that.

[This entry was edited by Bill93 on Tuesday, July 18, 2006 at 5:24:01 PM.]

Documented History (by the NGS)

01/01/1903 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1903 (OWF) SITUATED IN THE SOUTHWESTERN PART OF THE NORTHEAST QUARTER OF SEC. 33, T. 112 N., R. 51 W., ON LAND BELONGING TO A. BINFORD, WHOSE AGENT IS A.E. BUNDY, OF BRUCE. IT IS ON A HIGH RIDGE IN AN OPEN FIELD AND IS 2 MILES NORTH AND 3 MILES WEST OF THE TOWN OF BRUCE. THE STATION IS MARKED BY A STANDARD AZIMUTH MARK DISK. THE REFERENCE MARK BEING IN THE SOUTHWEST CORNER OF THE QUARTER SECTION (33) AND 428.913 METERS FROM THE STATION S 55 DEG 21 MIN W. IT IS 26.7 METERS LOWER IN ELEVATION THAN THE STATION. THE NORTHEAST CORNER OF THE SECTION (33) IS CONNECTED WITH THE STATION. (SEE INDEX.) THE FOLLOWING BEARINGS AND DISTANCES ARE FROM THE TRIANGULATION STATION. CHIMNEY AT WEST END OF REV. W. ROSSS HOUSE, N 89 DEG 30 MIN E, ABOUT 750 METERS. WILLIAM OVEROCKERS HOUSE, CHIMNEY, S 82 DEG 16 MIN W, ABOUT 1/2 MILE. CHIMNEY AT EAST END OR GEORGE BUNDYS HOUSE, S 43 DEG 28 MIN E, ABOUT 750 METERS.
01/01/1933 by SDGS (SEE DESCRIPTION)
RECOVERY NOTE BY SOUTH DAKOTA GEODETIC SURVEY 1933 ORIGINAL DESCRIPTION AS TO LOCATION IS SATISFACTORY. ABOUT 3 INCHES HAD BEEN BROKEN OFF THE TOP OF THE SURFACE MARK, AND THE NAIL LOST. A NEW MONEL-METAL RIVET WAS CEMENTED INTO THE TOP CENTER OF THE TERRA-COTTA TILE. THE SUB-SURFACE MARK WAS NOT RECOVERED. THE INTERSECTION STATIONS WERE CHECKED ON AND ANGLES READ FOR TWO NEW INTERSECTION STATIONS, VIZ., THE CAMPANILE ON THE COLLEGE CAMPUS AT BROOKINGS, AND THE WATER TOWER IN ARLINGTON. THE REFERENCE MARK IS IN GOOD CONDITION. NOTE--IN EXPLANATION OF THIS PROCEDURE IT SHOULD BE KNOWN THAT MOST OF THE MEN STARTING WORK ON SOUTH DAKOTA CWA PROJECTS HAD HAD NO PREVIOUS EXPERIENCE WITH THIS TYPE OF SURVEY AND INFORMATION WAS MEAGRE AT THE TIME THE PROJECT STARTED. OAKWOOD LAKE WAS TO BE USED AS A TIE-IN STATION FOR A NEW LINE OF TRAVERSE. THE FACT THAT A SUB-SURFACE MARK EXISTED WAS NOT DISCOVERED UNTIL THE SURVEY WAS WELL UNDER WAY. IT WAS INTENDED TO RETURN TO STATION OAKWOOD AND RECOVER THE SUB-SURFACE MARK, BUT THE PROJECT ENDED WITHOUT WARNING AND THIS HAS NOT BEEN DONE TO DATE (MAR. 15, 1934).
01/01/1965 by USGS (MARK NOT FOUND)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1965 STATION SEARCHED FOR BUT NOT RECOVERED. AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--IN THE SW PART OF THE NE 1/3 OF SEC 33, T.112N., R.51W
01/01/1966 by CGS (MARK NOT FOUND)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1966 (EBB) A SEARCH WAS MADE FOR THIS STATION BUT NEITHER THE STATION NOR THE REFERENCE MARK WAS FOUND. THE STATION SITE MAY BE UNDER CULTIVATION BUT THE LOCATION WAS HARD TO FIND AS MOST OF THE LANDMARKS HAVE BEEN REMOVED.
01/01/1968 by USGS (SEE DESCRIPTION)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1968 STATION DESTROYED. LOCAL INFORMATION INDICATES THAT ALL MARKS WERE DESTROYED BY ROAD CONSTRUCTION. THE AREA THE STATION WAS IN WAS USED TO SUPPLY FILL FOR NEARBY ROAD. AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--2 MILES NORTH AND 3 MILES WEST OF THE TOWN OF BRUCE.
01/01/1971 by NGS (SEE DESCRIPTION)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (LFS) THE SURFACE STATION MARK, A METAL RIVET CEMENTED INTO THE TOP CENTER OF A TERRE COTTA TILE AS DESCRIBED IN 1933, WAS RECOVERED IN GOOD CONDITION THRU AN INVERSE POSITION FROM TRAVERSE STATION BILL (USGS) 1968. THE REFERENCE MARK WAS NOT RECOVERED AND IS BELIEVED TO HAVE BEEN DESTROYED, THE FARM TENANT STATED THAT HE FOUND A TILE FILLED WITH CONCRETE LYING ON TOP OF THE GROUND NEAR THE REFERENCE MARK LOCATION. THE SURFACE STATION MARK WAS DUG UP AND THE UNDERGROUND MARK SEARCHED FOR, THERE WAS NO TRACE OF IT. NEW STATION MARKS AND AN AZIMUTH MARK WERE SET, A TRAVERSE CONNECTION WAS MADE TO STATION BILL (USGS). AND REFERENCE MARKS BILL (USGS) NO. 1 AND NO. 2 WERE OBSERVED. A NEW DESCRIPTION FOLLOWS-- THE STATION IS LOCATED ABOUT 2 MILES NORTH AND 3 MILES WEST OF BRUCE, 3/4 MILE NORTH-NORTHEAST OF THE NORTH END OF OAKWOOD LAKE, 0.35 MILE SOUTH OF AN EAST-WEST GRADED ROAD, IN THE NE 1/4 OF SEC. 33, T 112 N, R 51 W, ON A RIDGE IN A CULTIVATED FIELD, ON PROPERTY OWNED BY ELEANOR SWARTZ AND FARMED BY MR. KENNETH LOOMIS WHO LIVES ABOUT 1.0 MILE NORTHWEST OF THE STATION. THE STATION MARK IS A STANDARD DISK STAMPED OAKWOOD LAKE 1903 1971, SET IN A SQUARE CONCRETE MONUMENT 16-INCHES BELOW GROUND SURFACE. IT IS NEAR THE CENTER OF THE NORTHWEST-SOUTHEAST RIDGE, 305.5 FEET SOUTHEAST OF A METAL WITNESS POST SET AT THE NORTHWEST END OF THE RIDGE, AND 86.5 FEET NORTH OF A METAL WITNESS POST ON THE SOUTHWEST SLOPE OF THE RIDGE. STATION MARK BILL IS A STANDARD USGS DISK STAMPED ET BILL 1968, SECURED TO A DRIVEN STEEL ROD AND SET INSIDE A DRAIN TILE 12-INCHES BELOW GROUND SURFACE. IT IS NEAR THE CENTER OF THE RIDGE, 297 FEET SOUTHEAST OF THE WITNESS POST AT THE NORTHWEST END OF THE RIDGE, AND 91 FEET NORTH OF THE WITNESS POST ON THE SOUTHWEST SLOPE OF THE RIDGE. REFERENCE MARK NO. 1 IS A STANDARD USGS REFERENCE MARK DISK STAMPED BILL NO 1 1968, SECURED TO THE TOP OF A DRIVEN STEEL ROD AND SET INSIDE A DRAIN TILE FLUSH WITH THE GROUND. IT IS ON THE HIGHEST PART OF THE KNOLL AT THE NORTHWEST END OF THE RIDGE, 42 FEET EAST OF A METAL WITNESS POST AND ON LINE TO AN UPRIGHT SILO WHICH IS 1/2 MILE FURTHER EAST. REFERENCE MARK NO. 2 IS A STANDARD USGS REFERENCE MARK DISK STAMPED BILL NO 2 1968, SECURED TO THE TOP OF A DRIVEN STEEL ROD AND SET INSIDE A DRAIN TILE FLUSH WITH THE GROUND. IT IS ON THE SOUTHWEST SLOPE OF THE RIDGE, AT THE EAST EDGE OF A ROCK PILE, 1.5 FEET NORTHEAST OF A METAL WITNESS POST. THE AZIMUTH MARK IS A STANDARD DISK STAMPED OAKWOOD LAKE 1903 1971, SET IN A ROUND CONCRETE MONUMENT FLUSH WITH THE GROUND. IT IS 98 FEET SOUTHWEST OF THE CENTER OF THE ROAD INTERSECTION, 75 FEET WEST OF THE CENTER OF THE ROAD LEADING SOUTH TO THE LAKE, 53 FEET SOUTH OF THE CENTER OF THE EAST-WEST ROAD, AND 14 FEET NORTHWEST OF THE NORTHWEST END OF A STONE STRUCTURE SUPPORTING THE SIGN, OAKWOOD LAKES STATE PARK. TO REACH THE STATION FROM THE JUNCTION OF MAIN STREET AND COUNTY ROAD 7 AT THE EAST EDGE OF BRUCE, GO NORTH ON COUNTY ROAD 7 FOR 2.35 MILES TO A SIDE ROAD LEFT, TURN LEFT AND GO WEST 3.45 MILES TO A FIELD ENTRANCE ON THE LEFT AT THE TOP OF A HILL. THE STATION IS 0.4 MILE SOUTH-SOUTHWEST OF THIS POINT. TO REACH THE AZIMUTH MARK FROM THE FIELD ENTRANCE, GO WEST 0.55 MILE TO A LONG CURVE NORTH, CONTINUE STRAIGHT WEST FOR 0.1 MILE TO A CROSSROAD, TURN LEFT AND GO SOUTH ON GRADED ROAD 1.0 MILE TO A CROSSROAD AND THE AZIMUTH MARK IN THE SOUTHWEST CORNER AS DESCRIBED. AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--3 MILES NW OF BRUCE
01/01/1974 by NGS (SEE DESCRIPTION)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN) IN 1971 THE UNDERGROUND STATION MARK WAS RECOVERED IN GOOD CONDITION THRU AN INVERSE POSITION FROM TRAVERSE STATION BILL (USGS) 1968. IT WAS REPORTED AS BEING THE SURFACE STATION MARK WITH NO UNDERGROUND STATION MARK. THE POSITION OF THE MARK WAS HELD AND THE MARK REMOVED, A NEW UNDERGROUND STATION MARK WAS SET LOWER AND A NEW SURFACE STATION MARK WAS PLUMBED OVER IT, A TRAVERSE CONNECTION WAS MADE TO STATION BILL (USGS). AND REFERENCE MARKS BILL (USGS) NO. 1 AND NO. 2 WERE OBSERVED, A NEW AZIMUTH MARK WAS SET. UPON REQUEST FOR ADDITIONAL INVESTIGATION OF THE STATION RECOVERIES THE STATION WAS RE-OCCUPIED AT THIS TIME. IN 1971 THE FARM OPERATOR HAD STATED THAT HE HAD FOUND A TILE FILLED WITH CONCRETE LYING ON TOP OF THE GROUND NEAR THE REFERENCE MARK NO. 1 LOCATION. AT THIS TIME THE MAN WHO FARMED THE LAND FROM 1942 THRU 1968 WAS LOCATED, AND HE SAID THAT THEY HAD PLOWED UP A TILE IMBEDDED IN CONCRETE IN THE AREA OF THE STATION IN THE EARLY 1950S, APPARENTLY THE SURFACE STATION MARK. REFERENCE MARK NO. 3 WAS SET AND ADDITIONAL TIES MADE AT THIS TIME TO AID IN THE RECOVERY OF THE STATION. A NEW DESCRIPTION FOLLOWS-- THE STATION IS LOCATED ABOUT 2 MILES NORTH AND 3 MILES WEST OF BRUCE, 3/4 MILE NORTH-NORTHEAST OF THE NORTH END OF OAKWOOD LAKE, 0.35 MILE SOUTH OF AN EAST-WEST GRADED ROAD, ON A RIDGE IN A CULTIVATED FIELD, IN THE NE 1/4 OF SEC. 33, T 112 N, R 51 W, ON PROPERTY OWNED BY ELEANOR SWARTZ OF BRUCE, AND FARMED BY MR. KENNETH LOOMIS WHO LIVES ABOUT 1.0 MILE NORTHWEST OF THE STATION. TO REACH THE STATION FROM THE JUNCTION OF MAIN STREET AND COUNTY ROAD 7 AT THE EAST EDGE OF BRUCE, GO NORTH ON COUNTY ROAD 7 FOR 2.35 MILES TO A SIDE ROAD LEFT, TURN LEFT AND GO WEST 3.45 MILES TO A FIELD ENTRANCE ON THE LEFT AT THE TOP OF A HILL. THE STATION IS ABOUT 0.5 MILE SOUTH-SOUTHWEST OF THIS POINT. TO REACH THE AZIMUTH MARK FROM THE FIELD ENTRANCE, GO WEST 0.55 MILE ON THE GRAVELED ROAD TO A LONG CURVE LEADING NORTH, CONTINUE STRAIGHT WEST TO A CROSSROAD, TURN LEFT AND GO SOUTH ON A GRADED ROAD 1.0 MILE TO A CROSSROAD AT THE NORTH END OF OAKWOOD LAKE, AND THE AZIMUTH MARK ON THE RIGHT AS DESCRIBED. THE STATION MARKS ARE STANDARD DISKS STAMPED OAKWOOD LAKE 1903 1971. THE UNDERGROUND STATION MARK IS SET IN THE TOP OF A CONCRETE BLOCK FEET BELOW GROUND LEVEL. THE SURFACE STATION MARK IS SET IN THE TOP OF A SQUARE CONCRETE MONUMENT 16-INCHES BELOW GROUND LEVEL, A METAL ROD WAS PLACED ON THE MARK TO AID IN ITS REVOVERY. IT IS NEAR THE CENTER OF THE NORTHWEST-SOUTHEAST RIDGE, 919 FEET NORTHEAST OF THE INTERSECTING FENCES AT THE CENTER OF THE SECTION, 733 FEET NORTH OF THE EAST-WEST FENCE, 546 FEET EAST OF THE NORTH-SOUTH FENCE, AND APPROXIMATELY 85 FEET NORTH OF THE CENTER OF A ROCKPILE. REFERENCE MARK BILL (USGS) NO. 1 IS A STANDARD USGS DISK STAMPED BILL NO 1 1968, SECURED TO THE TOP OF A DRIVEN STEEL ROD AND SET INSIDE A DRAIN TILE. IT IS 46 FEET EAST OF A METAL WITNESS POST SET IN A ROCK PILE, ON LINE TO AN UPRIGHT SILO TO THE EAST. IT IS FLUSH WITH THE GROUND IN A GRASSED AREA. REFERENCE MARK BILL (USGS) NO. 2 IS A STANDARD USGS DISK STAMPED BILL NO 2 1968, SECURED TO THE TOP OF A DRIVEN STEEL ROD AND SET INSIDE A DRAIN TILE FLUSH WITH THE GROUND. IT IS AT THE EAST EDGE OF A ROCK PILE, 648 FEET NORTH OF THE EAST-WEST FENCE, 538 FEET EAST OF THE NORTH-SOUTH FENCE, AND 2.3 FEET NORTHEAST OF A METAL WITNESS POST. REFERENCE MARK NO. 3 IS A STANDARD DISK STAMPED OAKWOOD LAKE 1903 NO 3 1974, SET IN THE TOP OF A ROUND CONCRETE MONUMENT WHICH PROJECTS 8-INCHES. IT IS AT THE WEST EDGE OF THE ROCK PILE, 650 FEET NORTH OF THE EAST WEST FENCE, 523 FEET EAST OF THE NORTH-SOUTH FENCE, AND 1.4 FEET NORTH OF A METAL WITNESS POST. THE AZIMUTH MARK IS A STANDARD DISK STAMPED OAKWOOD LAKE 1903 1971, SET IN THE TOP OF A ROUND CONCRETE MONUMENT FLUSH WITH THE GROUND. IT IS 98 FEET SOUTHWEST OF THE ROAD INTERSECTION, 75 FEET WEST OF THE CENTER OF THE ROAD LEADING SOUTH TO THE LAKE, 53 FEET SOUTH OF THE CENTER OF THE EAST-WEST ROAD, AND 14 FEET NORTHWEST OF THE NORTHWEST END OF A STONE STRUCTURE SUPPORTING THE SIGN, OAKWOOD LAKES STATE PARK. STATION MARK BILL (USGS) IS A STANDARD USGS DISK STAMPED ET BILL 1968 SECURED TO THE TOP OF A DRIVEN STEEL ROD AND SET INSIDE A DRAIN TILE 12-INCHES BELOW GROUND LEVEL. IT IS 94 FEET NORTH OF THE METAL WITNESS POST AT REFERENCE MARK NO. 3, AND 8.7 FEET NORTHWEST OF STATION MARK OAKWOOD LAKE. FOR FURTHER INFORMATION SEE DESCRIPTION THEREOF. AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN ABOUT 4 MILES WNW OF BRUCE.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in January 1998.
  • 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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