Skip to Content

Details for Benchmark: MY2590

N 42° 30.033 W 071° 03.739 (NAD 83)

Altitude: 128

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

Location:
In MIDDLESEX county, MA View Original Datasheet
Designation:
MEL 1935
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:

Reference Points

Must Read!

Benchmarks may be on private property or in dangerous locations. Obey local laws. By using the services on Geocaching.com you agree to this disclaimer.

I returned to the site yesterday (after a lag of almost a year) and found the station, in good condition, along with one of the two drillhole RMs. Very satisfying.

The area photos I posted last year were approximately correct on the station's location. I found it by taking a more precise distance reading to the telephone pole across the street and letting my GPSr settle out. I then staked the GPSr's indicated station location (which was within foot and a half of the measured point) and used my metal detector to ping the disk. The first "ping" was a piece of old soda can, but the 2nd reading yielded the station disk. I then worked backwards to find one of the two drillhole RMs.

I estimate that the station is about 82 ft. (not 80.3) from the pole, which might have been moved over the past 74 years.

The drillhole I found was almost exactly 24.3 ft. from the station (matching part of the Description), but the station bears almost exactly 315dT (NW) from it (inconsistent with the description). I'm guessing that an error was made in transcription.

I searched extensively on the ledge exposure with the drillhole for a second hole, but this was very hard going. The ledge is covered with dirt, broken glass, and lichen, and is heavily encroached by thick moss and grass. I didn't think it worth the trouble to "unbury" more of the ledge to hunt for the 2nd drillhole.

Given the trouble in finding or seeing the references, I established a new one. The station is 15.3 ft. distant from the bark of a 12" tree (which sits just SW of a large clump of trees). This measurement was made about 1ft. up from the ground. The station bears about 25dT from the tree.

The station is covered by an inch or so of dirt and moss, and is surrounded by a lush growth of poison ivy.

[Photos:]
photoMY2590-Detail
photoMY2590-With-References
photoMY2590-Drillhole-at-24ft+
photoMY2590-Drillhole-and-Ledge

Station was searched for on 5/16/08, but was not found. It should be recoverable, however.

References were used from the telephone pole and the corner of the house next door, at #22 Melvin St.

But the general area of the mark is in the midst of heavy overgrowth and poison ivy (see photos). A reflective target was not used, so it was hard to hold the laser rangefinder on the house corner. The immediate area is covered with a patchwork of exposed ledge, much of which has been encroached by creeping sod and moss, so the drill holes were not found. Another try is called for.

[Photos:]
photoMY2590-Area-1
Photo looks (NNW) towards #22 Melvin St. Supposed location of station is indicated by yellow square.
photoMY2590-Area-2
Photo looks (NE) across Melvin St. Supposed location of mark is indicated by yellow square. Purple circle shows target house corner.
photoMY2590-Ivy
The way to the mark is paved with ivy--the poisonous kind.

Documented History (by the NGS)

01/01/1935 by MAGS (MONUMENTED)
DESCRIBED BY MASSACHUSETTS GEODETIC SURVEY 1935 A U.S.C. AND G.S. AND STATE SURVEY STANDARD DISK SET FLUSH IN LEDGE ON THE EAST SIDE OF MELVIN ST. NEAR ITS JUNCTION WITH RICHARDSON ST. 134.2 FT. EAST OF SOUTHEAST CORNER OF EAST ELL OF HOUSE NO. 23 ON MELVIN ST. 69.7 FT. SOUTH OF SOUTHEAST CORNER OF HOUSE NO. 22 ON MELVIN ST. 80.3 FT. EAST OF THE CENTER OF TELEGRAPH POLE MARKED W.L.D. 154-15 N.E.T. AND T. CO. 60.0 FT. EAST OF CENTER OF MELVIN ST. 24.3 FT. NORTH OF CENTER OF A DRILL HOLE WITH ARROW IN LEDGE. AND 23.4 FT. NORTHWEST OF CENTER OF ANOTHER DRILL HOLE WITH ARROW IN THE SAME LEDGE.

Control Text

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

Advertising with Us

Return to the Top of the Page