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Details for Benchmark: KV3628

N 40° 49.364 W 075° 25.345 (NAD 83)

Altitude: 1611

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

Location:
In NORTHAMPTON county, PA View Original Datasheet
Designation:
SMITHS GAP RESET
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:

Reference Points

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N 40° 49.364 W 075° 25.344

Though it was our main goal for the day, we saved the recovery of SMITHS GAP RESET for the second half of our day, following the search for [URL=http://www.geocaching.com/seek/cache_details.aspx?guid=3458bf82-b957-410a-b512-87d9759bff2e]Sasha's Cache[/URL] in the gamelands to the south. After finding the cache and climbing back up the steep hill to Smith Gap, we headed in on the Appalachian Trail toward the triangulation station. It was a short walk—0.5 miles along the A-T—to the point where our GPSrs were directing us off the trail to the south. I think I could distinguish a dim trail to the station at this point, but it's far from certain. When we arrived near the coordinates for the station, its location was obvious. Not only was there a depression in the ground surrounded by rocks roughly forming a circle, but there were also remnants of white plastic material used to mark the station for aerial surveys. We dug down and removed a few stones, enough to verify that this was indeed the mark, and then we went in search of the reference marks. Reference marks 1 and 3 were located without much difficulty using only the bearings given on the datasheet and estimating distances as we walked. RM1 was found beneath a pile of flat stones, possibly serving as protection. RM3 is exposed and is of a bright blue-green color, so it was easy to spot from a distance. The soil, roots and rocks were cleared from the station and the station disk was cleaned, and photographs were taken. As noted in the 1942 recovery, the marks are stamped SMITH GAP instead of SMITHS GAP, which is given as the designation. All are in good condition. Before leaving the area (rather quickly, due to the sudden drop in temperature and feeling of impending precipitation in the air) we re-buried the station mark, returning it to the condition in which we'd found it. Similarly RM1 was covered again with stones.

[I]A report on the condition of the station mark and reference marks 1 and 3 was submitted to NGS, along with the following recovery note:[/I]

The station mark and reference marks 1 and 3 were recovered in good condition. The 1942 description is adequate, with the following additions. Kunkletown-Port Phillip Rd. is now called Smith Gap Road. There is a small parking area at the point where the Appalachian Trail crosses this road. The blazed tree was not found. The station mark is now approximately one foot below the surface of the ground, is covered by loose soil and several flat stones, and is surrounded by a circle of rocks approximately 6 feet in diameter. Reference mark 1 is covered by several flat rocks.

Zhanna

[Photos:]
photoKV3628, Northampton County, PA
photoEye-level view of the mark beneath the surface.
photoFacing roughly N.
photoThe mark surrounded by rocks and our tools.

photoKV3628 RM1
photoEye-level view of the RM and the pile of stones.
photoLooking S toward the boundary.
photoLooking SSW toward the station.
N 40° 49.381' W 075° 25.336'
photoKV3628 RM3
photoEye-level view of the mark on the outcrop.
photoLooking N.
photoLooking S to the gamelands boundary.
N 40° 49.380' W 075° 25.363'
N 40° 49.364 W 075° 25.345

[B]Station recovered in good condition.[/B]

This first order triangulation station is situated atop the ridge of Blue Mountain at Smith Gap (as the designation implies), almost directly on the border of Northampton and Monroe counties, approximately 275 feet south of the Appalachian Trail (the triangle-blazed tree and the dim trail were not found), and 0.5 miles west-south west of a small parking area at the A-T crossing on Smith Gap Road. The 1942 “to reach” directions are still fairly usable. A handheld GPS receiver was helpful in pinpointing the location of the station. It appears the brush in the area has grown in considerably from when the station was re-monumented in 1929.

The station and its two reference marks were found as described. The station mark is set in the top surface of a concrete monument within a shallow depression in the ground and surrounded by a rough circle of stones about 6 feet in diameter. It was covered over with some flat rocks and a few inches of loose, loamy soil containing a mass of fine roots. The mark itself is about 1 foot below ground level. Also found were sections of tattered and aged white plastic sheeting which was obviously placed over the station in the shape of a large cross of the kind used as a target for an aerial survey. RM 1 was covered by some flat stones to hide it. RM 3 is in the open and well exposed.

At the station a Garmin GPSmap76 receiver with active remote antenna was used to record WAAS-corrected coordinates which were identical (within 0.001 minute) to the adjusted coordinates listed on the NGS datasheet. All marks are in good condition and the stamped designations are legible. The station mark was re-buried as originally found, and RM 1 was covered over again with flat stones.

~Rich in NEPA~

[Photos:]
photoKV3628, “SMITH GAP 1929,” Northampton County, PA.
photoGPSr and the station mark.
photoEyelevel view of station mark and setting.
photoOrientation view, facing easterly.

photoKV3628, “SMITH GAP NO. 1 1929”
photoGPSr and the reference mark.
photoEyelevel view of reference mark and setting.
photoOrientation view, facing SSW to station.

photoKV3628, “SMITH GAP NO. 3 1942”
photoGPSr and the reference mark.
photoEyelevel view of reference mark and setting.
photoOrientation view, facing SE to station.

Documented History (by the NGS)

1/1/1929 by CGS (MONUMENTED)
1/1/1882 by CGS (GOOD)
DESCRIBED BY COAST AND GEODETIC SURVEY 1882 (MM) STATION IS SITUATED ON THE BLUE RIDGE, VERY NEAR THE BOUNDARY LINE BETWEEN MOORE TOWNSHIP IN NORTHAMPTON COUNTY AND ELDRED TOWNSHIP IN MONROE COUNTY. IT IS ABOUT 4 MILES W OF POINT PHILLIP, A STATION ON THE LEHIGH AND LEBANON RAILROADS. THE STATION IS MARKED BY AN EARTHEN JAR 3 INCHES IN DIAMETER BURIED WITH THE BASE UPWARD NEARLY 3 FEET BELOW THE SURFACE, ABOVE THIS IS A FLAT STONE 18 BY 24 INCHES AND 3 INCHES THICK, UPON WHOSE UPPER SURFACE IS A HOLE 1/2 INCH IN DIAMETER AND 3/4 INCH DEEP WITH A SMALL TRIANGLE CUT AROUND IT. UPON THIS STANDS A MONUMENT ABOUT 4 BY 9 INCHES AND 4 FEET LONG, UPON WHOSE TOP CROSS LINES ARE CUT. THE LETTERS U.S. ARE CUT UPON THE NW SIDE OF THE MONUMENT NEAR THE TOP. THE CENTER OF THE JAR, THE HOLE IN THE FLAT STONE, AND THE INTERSECTION OF THE CROSSLINES ARE SET IN THE SAME VERTICAL. THE TOP OF THE MONUMENT IS ABOUT 1 FOOT ABOVE THE SURFACE OF THE GROUND. FOUR SMALL MONUMENTS ARE ALSO SET, EACH WITH A HOLE IN THE TOP SO THAT THE LINES JOINING THE HOLES INTERSECT OVER THE CENTER OF THE STATION. THESE FOUR SMALL MONUMENTS FORM THE CORNERS OF THE BASE OF A RUDE PYRAMID OF STONES WHICH IS BUILT UP AND AROUND THE CENTRAL MONUMENT TO PROTECT IT FROM THE ACTION OF THE WEATHER. THE BEARINGS AND DISTANCES FROM THE HOLES TO THE STATION ARE- A S 38 DEG W 4 FEET 6-1/2 INCHES. B S 52 DEG E 4 FEET 7 INCHES. C N 39 DEG E 4 FEET 3-1/2 INCHES. D N 52 DEG W 4 FEET 5 INCHES. THERE ARE FOOTPATHS BY WHICH THE DISTANCES TO THE STATION MAY BE SHORTENED. THERE IS NO GAP IN THE MOUNTAINS AT THIS POINT. THE STATION WAS OCCUPIED IN 1875, 1876, 1880, 1881 AND 1882. TO REACH THE STATION GO TO BETHLEHEM, THENCE BY LEHIGH AND LACKAWANNA RAILROAD TO POINT PHILLIPS, WALK NEARLY 1/2 MILE WESTWARD TO THE STONE HOTEL KEPT BY A. MARSH. FROM THE HOTEL GO WESTWARD UP THE MOUNTAIN ROAD UNTIL THE CREST OF THE BLUE MOUNTAIN IS REACHED, HERE TURN TO LEFT AND FOLLOW A WOOD ROAD SOUTHWARD ABOUT 600 METERS, THEN A FOOTPATH TO THE LEFT ABOUT 40 METERS TO THE STATION.
1/1/1929 by CGS (SEE DESCRIPTION)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1929 (CMT) THIS STATION IS ON THE MONROE-NORTHAMPTON COUNTY LINE, ABOUT 3 MILES E OF THE CARBON COUNTY LINE, 2 MILES SE OF KUNKLETOWN, 2 MILES N OF POINT PHILLIP, ON THE SUMMIT OF THE BLUE RIDGE MOUNTAIN, ABOUT 1/2 MILE W OF SMITH GAP, THROUGH WHICH AN OLD ROAD RUNS BETWEEN KUNKLETOWN AND PORT PHILLIP. THE SUMMIT OF THE MOUNTAIN IS THICKLY COVERED WITH BRUSH ABOUT 10 FEET HIGH. THE IMMEDIATE VICINITY OF THE STATION HAS BEEN CLEARED TO PERMIT BUILDING. LINES CLEARED FROM THE STATION TO THE REFERENCE MARKS WILL HELP IDENTIFY THE STATION SITE FOR A NUMBER OF YEARS. THE STATION IS ABOUT 60 YARDS S OF AN ABANDONED ROAD THAT RUNS W ALONG THE RIDGE FROM THE ROAD THROUGH SMITH GAP. THE STATION MARK IS A STANDARD DISK SET ABOUT 6 INCHES BELOW THE SURFACE OF THE GROUND AND SURROUNDED BY A 6-FOOT CIRCLE OF SMALL ROCK. REFERENCE MARK NO. 1 IS A STANDARD DISK SET IN A DRILL HOLE IN A BOULDER, FLUSH WITH THE GROUND, THAT HAS AN AREA ABOUT 9 INCHES SQUARE EXPOSED. REFERENCE MARK NO. 2 IS A STANDARD DISK SET IN A DRILL HOLE IN A BOULDER AND IS ABOUT 6 INCHES ABOVE THE GROUND ALMOST ENTIRELY EXPOSED. BOTH MARKS ARE APPROXIMATELY THE SAME LEVEL AS THE STATION. HEIGHT OF SIGNAL ABOVE STATION MARK - 6 METERS.
1/1/1942 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1942 (GWL) THE STATION RECOVERED AS DESCRIBED AND FOUND IN EXCELLENT CONDITION. REFERENCE MARK NO. 1 WAS FOUND IN GOOD CONDITION BUT THE DISTANCE FROM THE STATION IS 28.113 METERS INSTEAD OF 28.128 AS LISTED IN THE 1929 DESCRIPTION. REFERENCE MARK NO. 2 HAS BEEN DESTROYED. A REFERENCE MARK NO. 3 AND AN AZIMUTH MARK WERE ESTABLISHED. ALL MARKS ARE STAMPED SMITH GAP INSTEAD OF SMITHS GAP AS IS THE NAME OF THE STATION. A COMPLETE NEW DESCRIPTION FOLLOWS- THE STATION IS ON THE SUMMIT OF THE BLUE RIDGE MOUNTAIN, ABOUT 2 MILES N OF POINT PHILLIP, NEAR THE MONROE-NORTHAMPTON COUNTY LINE. IT IS ABOUT 0.5 MILE W OF THE KUNKLETOWN-POINT PHILLIP ROAD AT THE POINT WHERE IT CROSSES SMITH GAP, 45 FEET S OF THE STATE HUNTING GROUNDS BOUNDARY LINE WHICH IS A CLEARED LINE THROUGH THE BRUSH ACROSS THE SUMMIT OF THE MOUNTAIN. THIS IS ALSO PROBABLY THE COUNTY LINE. IT IS STAMPED SMITH GAP 1929 AND IS ABOUT 4 INCHES BELOW THE SURFACE OF THE GROUND. REFERENCE MARK NO. 1 IS NNE OF THE STATION. IT IS SET IN THE E EDGE OF A BOULDER THAT HAS A 4-BY 15-INCH EXPOSED SURFACE AND PROJECTS ABOUT 3 INCHES. IT IS STAMPED SMITH GAP NO. 1 1929. REFERENCE MARK NO. 3 IS WNW OF THE STATION, SET IN AN OUTCROP OF BEDROCK THAT HAS A 3- BY 1-FOOT EXPOSED SURFACE AND PROJECTS ABOUT 15 INCHES. IT IS STAMPED SMITH GAP NO. 3 1942 AND IS SET FLUSH. THE AZIMUTH MARK IS ABOUT 2 MILES SE OF THE STATION AT THE SE ANGLE OF A CROSSROADS, BY A MILEAGE SIGN, 47 FEET SE OF THE JUNCTION, 46 FEET E OF POWER LINE POLE MR-212, AND 40 FEET S OF THE E-W ROAD. IT IS STAMPED SMITH GAP 1942 AND PROJECTS ABOUT 6 INCHES. A 10-FOOT STAND IS REQUIRED TO SEE THE MARK FROM THE STATION. THE SALEM UNION CHURCH IN MOORESTOWN IS VISIBLE FROM THE GROUND WITH A SMALL AMOUNT OF CLEARING. TO REACH THE AZIMUTH MARK FROM THE POINT PHILLIP HOTEL IN POINT PHILLIP (ECKERTS CORNER) GO NORTHERLY TOWARD WIND GAP FOR 1.0 MILE TO A CROSSROADS AND THE MARK. TO REACH THE STATION FROM THE POINT PHILLIP HOTEL IN POINT PHILLIP (ECKERTS CORNER) GO NORTHERLY, TOWARD WIND GAP, FOR 0.05 MILE TO A POINT WHERE THE MAIN ROAD TURNS RIGHT, SOUTHWESTERLY, AND A GRAVEL ROAD CONTINUES IN A NORTHERLY DIRECTION, CONTINUE ON THE GRAVEL ROAD, UP THE MOUNTAIN FOR 2.6 MILES TO THE SUMMIT (SMITH GAP), TURN LEFT, W, ALONG THE APPALACHIAN TRAIL WHICH IS PLAINLY MARKED BY METAL DISKS AND WHITE PAINT BLAZES AND GO 0.5 MILE TO A TRIANGLE BLAZED TREE ON THE LEFT, LEAVE THE TRAIL AND GO S ON A DIM TRAIL FOR 0.05 MILE TO THE PUBLIC HUNTING GROUNDS BOUNDARY LINE AND THE STATION. A 37-FOOT TOWER WILL SEE AN 8-FOOT LIGHT AT STATION RICHMOND (N.J.G.S.). A 37-FOOT TOWER WILL SEE A 47-FOOT LIGHT AT STATION MEIXSELL. A 37-FOOT TOWER WILL SEE A 74-FOOT LIGHT AT STATION EASTON, 1929. A 37-FOOT TOWER WILL SEE A 60-FOOT LIGHT AT STATION HAYCOCK 2 1929.
1/1/1958 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1958 (JMR) THE STATION MARK, REFERENCE MARKS NO 1, NO 3 AND THE AZIMUTH MARK WERE RECOVERED AS DESCRIBED AND FOUND IN GOOD CONDITION. THE 1929 DESCRIPTION FOR RECOVERY IS ADEQUATE. THE DISTANCES AND DIRECTIONS TO THE MARKS WERE FOUND TO CHECK THE 1929 DATA.
1/1/1962 by LOCSUR (MARK NOT FOUND)
RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1962 (AGF) LETTER OF A.G. FRITZ, DANIELSVILLE, PA. DATED JULY 19, 1962- THE AZIMUTH MARK WAS DESTROYED DUE TO EXCAVATING THE AREA. THE DISK WAS RETURNED TO THE WASHINGTON OFFICE.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in September 1999.
  • The orthometric height was scaled from a topographic map.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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