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Details for Benchmark: EM0844

N 34° 38.293 W 098° 45.423 (NAD 83)

Altitude: 1385

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

Location:
In COMANCHE county, OK View Original Datasheet
Designation:
HOMA
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:
May hold, but of type commonly subject to surface motion.

Reference Points

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Documented History (by the NGS)

01/01/1947 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1947 (RLE) THE STATION IS LOCATED ON A ROAD RIGHT-OF-WAY ABOUT 1-1/4 MILES NORTH-NORTHWEST OF INDIAHOMA. IT IS SITUATED 27 FEET SOUTH FROM THE CENTER OF THE GRAVEL ROAD, 8 FEET NORTH OF AN EAST-WEST FENCE LINE AND IS WITNESSED BY A 4 BY 4 INCH REFERENCE POST THAT IS SET IN THE FENCE LINE. THE DISK IS STAMPED HOMA 1947 AND PROJECTS 2 INCHES. REFERENCE MARK NO. 1 IS SET IN THE FENCE LINE ACROSS THE ROAD FROM THE STATION. THE DISK IS STAMPED HOMA NO 2 1947 AND PROJECTS 2 INCHES. REFERENCE MARK NO. 2 IS SET IN THE FENCE LINE EAST OF THE STATION. THE DISK IS STAMPED HOMA NO 2 1947 AND PROJECTS 2 INCHES. THE AZIMUTH MARK IS LOCATED SOUTH-SOUTHEAST OF THE STATION, 30 FEET EAST OF THE CENTER OF ROAD, 3 FEET EAST OF A TELEPHONE POLE AND IS WITNESSED BY A WHITE REFERENCE POST. IT IS STAMPED HOMA 1947 AND PROJECTS 2 INCHES. TO REACH THE STATION FROM THE MAIN INTERSECTION IN INDIAHOMA, GO WEST ON U.S. HIGHWAY 62 FOR 0.25 MILE TO CROSSROADS AND A MOBILGAS SERVICE STATION ON THE RIGHT, TURN RIGHT AND GO NORTH ON A GRAVELED ROAD FOR 0.7 MILE TO THE AZIMUTH MARK ON THE RIGHT. THENCE CONTINUE STRAIGHT AHEAD FOR 0.6 MILE TO CROSSROADS, TURN LEFT AND GO 0.05 MILE TO THE STATION ON THE LEFT AS DESCRIBED. A 10 FOOT SIGNAL AT SNYDER 1935 IS VISIBLE AT 4 FEET. A 4 FOOT SIGNAL AT WICHITA IS VISIBLE AT 4 FEET. A 4 FOOT SIGNAL AT BAKER 1935 IS VISIBLE AT 4 FEET. A 4 FOOT SIGNAL AT GERONIMO USGS IS VISIBLE AT 50 FEET. A 4 FOOT SIGNAL AT MT SCOTT IS VISIBLE AT 37 FEET. A 4 FOOT SIGNAL AT CACHE IS VISIBLE AT 20 FEET. A 4 FOOT SIGNAL AT QUANAH IS VISIBLE AT 4 FEET. A 74 FOOT SIGNAL AT HOLLIDAY IS VISIBLE AT 37 FEET. A 4 FOOT SIGNAL AT TILLMAN IS VISIBLE AT 20 FEET. A 47 FOOT SIGNAL AT JACK IS VISIBLE AT 20 FEET. A 4 FOOT SIGNAL AT RED IS VISIBLE AT 20 FEET.
01/01/1961 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (NES) ALL MARKS WERE RECOVERED IN GOOD CONDITION. THERE WERE SOME DIFFERENCES IN THE DISTANCES AND ANGLES TO THE MARKS, AND THE SOUTH RIGHT-OF-WAY FENCE AT THE STATION HAD BEEN MOVED SEVERAL FEET NORTH. A NEW DESCRIPTION FOLLOWS. THE STATION IS LOCATED ABOUT 1.3 MILES NORTH-NORTHWEST OF INDIAHOMA. THE STATION MARK IS A STANDARD DISK STAMPED HOMA 1947, SET IN A SQUARE CONCRETE MONUMENT THAT PROJECTS 3 INCHES. IT IS 27 FEET SOUTH OF THE CENTER OF A GRAVEL ROAD, 18 FEET SOUTH OF THE SOUTH RIGHT-OF-WAY FENCE AND 3.2 FEET NORTHWEST OF A WITNESS POST. RM 1 IS A STANDARD DISK STAMPED HOMA NO 1 1947, SET IN A SQUARE CONCRETE MONUMENT THAT PROJECTS 1 INCH. IT IS 53.7 FEET NORTH OF THE WITNESS POST AND 0.5 FOOT SOUTH OF THE NORTH RIGHT-OF-WAY FENCE. RM 2 IS A STANDARD DISK STAMPED HOMA NO 2 1947, SET IN A SQUARE CONCRETE MONUMENT THAT IS FLUSH AND IS 74.6 FEET EAST OF THE WITNESS POST. IT IS IN THE PASTURE 18 FEET SOUTH OF THE SOUTH RIGHT-OF-WAY FENCE. THE AZIMUTH MARK IS A STANDARD DISK STAMPED HOMA 1947, SET IN A SQUARE CONCRETE MONUMENT THAT PROJECTS 1 INCH. IT IS 30 FEET EAST OF THE CENTER OF THE ROAD, 6 FEET SOUTH OF A TRANSMISSION POLE, 1.8 FEET NORTH OF A WITNESS POST AND 0.5 FOOT WEST OF THE FENCE, ON THE EAST SIDE OF THE ROAD. TO REACH FROM THE MAIN CROSSROADS IN INDIAHOMA, GO WEST ON U.S. HIGHWAY 62 FOR 0.25 MILE TO A GRAVELED ROAD RIGHT, TURN RIGHT AND FOLLOW THE GRAVELED ROAD NORTH FOR 0.7 MILE TO THE AZIMUTH MARK ON THE RIGHT. CONTINUE NORTH FOR 0.6 MILE TO A CROSSROAD, TURN LEFT, GO THROUGH THE WIRE GATE AND FOLLOW THE SECTION-LINE ROAD WEST FOR 0.05 MILE TO THE TOP OF THE GRADE AND THE STATION ON THE LEFT.
01/01/1963 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963 (LBO) STATION RECOVERED AND ALL MARKS WERE FOUND TO BE IN GOOD CONDITION. THE STATION IS LOCATED 1-1/2 MILES NORTH AND 0.3 MILE WEST OF INDIAHOMA, NEAR THE NORTHEAST CORNER OF SEC. 14, T 2 N, R 14 W. THE STATION MARK IS A STANDARD DISK STAMPED HOMA 1947 AND SET IN THE TOP OF A 12 X 12 INCH CONCRETE POST, PROJECTING ABOUT 3 INCHES. IT IS 35.0 FEET SOUTH OF THE CENTER OF AN EAST-WEST SECTION LINE ROAD, 21.0 FEET SOUTH OF A FENCE LINE AND 3.2 FEET NORTHWEST OF A STEEL WITNESS POST. REFERENCE MARK NO. 1 IS NORTH OF THE STATION, A STANDARD DISK STAMPED HOMA NO 1 1947 AND SET IN THE TOP OF A CONCRETE POST ABOUT FLUSH WITH SURFACE OF THE GROUND. IT IS 0.5 FOOT SOUTH OF THE FENCE LINE ON THE NORTH SIDE OF THE SECTION LINE ROAD, 53.7 FEET NORTH OF A STEEL WITNESS POST. REFERENCE MARK NO. 2 IS EAST OF THE STATION, 74.6 FEET EAST OF A STEEL WITNESS POST AND 29.5 FEET SOUTH OF THE SOUTH RIGHT-OF-WAY FENCE, S STANDARD DISK STAMPED HOMA NO 2 1947 AND SET IN THE TOP OF A CONCRETE POST ABOUT FLUSH WITH SURFACE OF THE GROUND. THE AZIMUTH MARK IS SOUTH-SOUTHEAST OF THE STATION, ABOUT 100 YARDS NORTHEAST OF A FARM HOUSE, 27.0 FEET EAST OF THE CENTER OF THE ROAD, 2.8 FEET NORTH OF A WITNESS POST, 0.5 FOOT WEST OF THE FENCE LINE AND 119.0 FEET NORTH OF A TELEPHONE POLE. IT IS A STANDARD DISK STAMPED HOMA 1947 AND SET IN THE TOP OF A 12 X 12 INCH CONCRETE POST AND PROJECTS ABOUT 1 INCH ABOVE THE SURFACE OF THE GROUND. TO REACH FROM THE MAIN CROSS ROAD IN INDIAHOMA, ABOUT 1/2 BLOCK NORTH OF THE POST OFFICE, GO WEST ON U.S. HIGHWAY 62 FOR 0.3 MILE TO A CROSS ROAD, TURN RIGHT AND GO NORTH FOR 0.3 MILE CROSSING RAILROAD, CONTINUE NORTH FOR 0.3 MILE TO THE AZIMUTH MARK ON THE RIGHT, EAST SIDE OF THE ROAD, CONTINUE NORTH FOR 0.6 MILE TO THE EAST-WEST SECTION LINE ROAD AND THE STATION 0.05 MILE WEST ON THE SOUTH SIDE OF THE EAST-WEST SECTION LINE ROAD.
01/01/1964 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (DMW) THE STATION IS LOCATED ON A ROAD RIGHT-OF-WAY ABOUT 1-1/4 MILES NORTH NORTHWEST OF INDIAHOMA. TO REACH STATION FROM INTERSECTION OF BOUNDARY ROAD AND U.S. HIGHWAY NO 62 IN INDIAHOMA, GO NORTH 1.4 MILES ON BOUNDARY ROAD TO THE SOUTHWEST CORNER OF THE FORT SILL MILITARY RESERVATION, WHICH IS THE INTERSECTION OF TWO ROADS. PROCEED WEST FOR 110 METERS ON DIRT ROAD. THE STATION IS 9 METERS SOUTH OF THE CENTERLINE OF THE ROAD AND 2 METERS SOUTH OF THE FENCE AMONG SOME SMALL TREES. REFERENCE POST HAS BEEN DESTROYED. THE DISK IS STAMPED HOMA 1947, AND IS SET IN A CONCRETE POST PROJECTING 3 INCHES. REFERENCE MARK NO 1 IS ACROSS THE ROAD, AND HAS HAD ABOUT 18 INCHES OF THE CONCRETE POST EXPOSED BY A ROAD GRADER. THE DISK IS STAMPED HOMA NO 1, 1947. REFERENCE MARK NO 2 IS SET ABOUT 3 METERS SOUTH OF THE FENCE LINE IN A PASTURE. THE DISK IS STAMPED HOMA NO 2, 1947 AND PROJECTS ABOUT 2 INCHES. THE AZIMUTH MARK IS 0.6 MILE SOUTH OF THE SOUTHWEST CORNER OF THE FORT SILL MILITARY RESERVATION. IT IS 10 METERS EAST OF THE CENTER OF THE ROAD, 1 METER EAST OF A TELEPHONE POLE. THE WITNESS POST IS GONE. THE DISK IS STAMPED HOMA 1947 AND PROJECTS ABOUT 1 INCH.
01/01/1988 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 (LDA) THE STATION WAS RECOVERED AT THIS DATE. HOMA RM 2 WAS LOCATED AT THIS TIME BUT NOT DESCRIBED. BE IT ALSO NOTED THAT THE THERE HAS BEEN AN RM 3 SET. THIS WAS DONE BY ARMY PERSONNEL. THE STATION IS LOCATED ABOUT 2.0 KM (1.25 MI) NORTH OF INDIAHOMA, 0.8 KM (0.5 MI) WEST OF POST OAK ROAD AND ON ROAD RIGHT-OF-WAY. OWNERSHIP--OKLAHOMA DEPARTMENT OF TRANSPORTATION, OKLAHOMA CITY, OK, PHONE 405-521-2554. TO REACH THE STATION FROM THE INTERSECTION OF OLD US HIGHWAY 62 AND POST OAK ROAD IN INDIAHOMA, AT A PHILLIPS 66 GAS STATION, GO NORTH ON POST OAK ROAD FOR 1.2 KM (0.75 MI) TO NEW US HIGHWAY 62. CONTINUE NORTH FOR 0.8 KM (0.5 MI) TO A DIRT CROSSROAD. TURN LEFT AND GO WEST ON DIRT ROAD FOR ABOUT 100 METERS (328.0 FT) TO THE STATION ON THE LEFT. THE STATION MARK IS A STANDARD CGS DISK STAMPED---HOMA 1947---, SET IN THE TOP OF A SQUARE CONCRETE POST 25 CM ACROSS AND PROJECTING 3 INCHES ABOVE THE GROUND SURFACE. LOCATED 9.0 METERS (29.5 FT) SOUTH FROM CENTER OF DIRT ROAD, 23.1 METERS (75.8 FT) WEST FROM RM 2, 14.7 METERS (48.3 FT) SOUTH OF NEW RM 3 AND 1.4 METERS (4.5 FT) NORTH FROM A FIBERGLASS WITNESS POST. GPS SURVEY, FORT SILL, OKLAHOMA. THIS STATION IS SUITABLE FOR GPS SURVEYS. DESCRIBED BY D.A. BOWLING.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in November 1994.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
  • The X, Y, and Z were computed from the position and the ellipsoidal ht.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The ellipsoidal height was determined by GPS observations and is referenced to NAD 83.
  • The geoid height was determined by GEOID99.

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