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Details for Benchmark: CQ0772

N 32° 14.333 W 092° 23.817 (NAD 83)

Altitude: 255.9

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

Location:
In JACKSON county, LA View Original Datasheet
Designation:
F 3470 LAGS RESET 1956
Marker Type:
survey disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

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Mark was found in good condition, 3 feet southeast of a pair of telephone junction boxes, 2 feet southeast of short cutoff telephone pole with Posted sign attached, projecting 1.5 inches above surrounding ground level.

[Photos:]
photoCQ0772-F_3470_RESET-1-20121007
photoCQ0772-F_3470_RESET-3NE-20121007
photoCQ0772-F_3470_RESET-3SSW-20121007

Documented History (by the NGS)

01/01/1956 by CGS (MONUMENTED)
01/01/1965 by CGS (GOOD)
DESCRIBED BY COAST AND GEODETIC SURVEY 1965 9.5 MI SE FROM CHATHAM. LOCATED ABOUT 5.5 MILES SOUTHEAST ALONG STATE HIGHWAY 4 FROM THE POST OFFICE IN CHATHAM TO ITS JUNCTION WITH STATE HIGHWAY 499, THENCE SOUTH ALONG STATE HIGHWAY 499 TO A CROSSROAD AND THE MARK IN THE NORTHEAST ANGLE OF THE INTERSECTION. IT IS 102 FEET SOUTH OF POWER POLE, 38 FEET NORTH OF THE CENTER OF THE EAST-WEST ROAD, AND 38 FEET EAST OF THE CENTER OF THE HIGHWAY 499, ABOUT LEVEL WITH THE HIGHWAY.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.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 geoid height was determined by GEOID99.

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