Skip to Content

Details for Benchmark: MY2439

N 42° 21.096 W 071° 05.421 (NAD 83)

Altitude: 17

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

Location:
In SUFFOLK county, MA View Original Datasheet
Designation:
SMOOTS
Marker Type:
traverse station disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

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.

Went to the site. Didn't find the brass bolt. Now we know from the description the disk is gone, but I didn't see any concrete thing either. I didn't do any poking or digging, so it may be underground, but I did find some chunks of concrete at the base of a tree. Remnants?

Also, looking at the Google Earth imagery, there's some sort of ... thing going on at the site. There looks to be a box around a plot of land about 50 ft x 90 ft in size (including the site where the monument should be), as if there was a change in surface materials or some sort of small trench dug around it. This imagery is from 2001, I believe, and will probably get updated some time this year with stuff from 2005 (it's being distrubed right now to state agencies).

[Photos:]
photoConcrete remnants? (and other trash)
photoThe area, looking east

Documented History (by the NGS)

01/01/1987 by MAGS (MONUMENTED)
DESCRIBED BY MASSACHUSETTS GEODETIC SURVEY 1987 (WJK) THE STATION IS ABOUT 2.9 KM (1.8 MI) SOUTHWEST OF BOSTON CITY HALL AND ABOUT 2.1 KM (1.3 MI) SOUTHEAST OF CAMBRIDGE CITY HALL. OWNERSHIP--CITY OF BOSTON STREET DEPARTMENT. TO REACH THE STATION FROM THE STATE CAPITOL IN BOSTON, GO SOUTHWEST ON BEACON STREET ABOUT 1.0 KM (0.6 MI) TO BERKLEY STREET. TURN RIGHT AND GO NORTH ABOUT 0.1 KM (0.1 MI) TO STORROW DRIVE. TURN LEFT AND GO WEST ON STORROW DRIVE ABOUT 1.3 KM (0.7 MI) TO THE STATION ON THE LEFT. THE STATION IS MARKED BY A MAGS DISK STAMPED---SMOOTS---, AND SET IN THE TOP OF A SQUARE CONCRETE MONUMENT 13 CM ON A SIDE AT GRADE ON THE SOUTH SIDE OF STORROW DRIVE IN THE BACK BAY AREA OF THE CITY OF BOSTON.IT IS 13.50 METERS (44.29 FT) WEST OF A CROSS CUT IN THE RIM OF A MAN HOLE AND 10.15 METERS (33.29 FT) NORTH OF A BRASS PIN IN LEAD AT THE WEST END OF A CONCRETE RETAINING WALL WITH IRON RAILING. HEIGHT OF LIGHT SHOWN WAS 1.5 METERS ABOVE THE MARK. DESCRIBED BY W.J.KENNEDY, MAGS. 870707-RECOVERED, DISK REMOVED FROM MONUMENT, DRILL HOLE VISABLE STATION STILL GOOD. D.C. AHERN, MAGS.

Control Text

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

Advertising with Us

Return to the Top of the Page