LX6333 - HAMMONASSET 3 - Madison, CT
Posted by: Groundspeak Premium Member king.hubi
N 41° 14.935 W 072° 32.648
18T E 705771 N 4569298
A triangulation station disk from the U.S. Coast & Geodetic Survey (USCGS) at the southern most point of Hammonasset Beach State Park in Madison, Connecticut.
Waymark Code: WMA9DW
Location: Connecticut, United States
Date Posted: 12/07/2010
Published By:Groundspeak Premium Member Ernmark
Views: 4


This triangulation station disk from the U.S. Coast & Geodetic Survey (USCGS) is located at the southern most point of Hammonasset Beach State Park in Madison, Connecticut. The disk is sitting horizontal in the top of a large rock boulder which is about 4 feet in diameter and projects about 3 feet above the ground. The boulder with the disk is located next to a wooden viewing platform.

The disk has a lot of scratches but the stamping, HAMMONASSET and 1932, is still readable - overall condition is good. The station is listed in the National Geodetic Survey database.

According to the NGS datasheet there should be three reference marks nearby. I have searched the whole area but could not find any of these reference marks. Maybe you have more luck.

Here is a good description how to reach the mark taken from a 1976 recovery from the NGS datasheet:

TO REACH THE STATION FROM THE POST OFFICE IN MADISON, GO EAST ON U.S. HIGHWAY 1 FOR 1.9 MILES TO A SIDE ROAD RIGHT, GOING TO THE HAMMONASSET STATE PARK. TURN RIGHT AND GO SOUTH ON A PAVED ROAD FOR 0.25 MILE TO THE ENTRANCE OF THE PARK. CONTINUE SOUTH AND THEN EASTERLY FOLLOWING THE MAIN ROAD THROUGH THE PARK FOR 0.9 MILE TO A T-ROAD AT A CONCESSION BUILDING. TURN LEFT AND GO EASTERLY ON A PARK ROAD FOR 1.25 MILES TO A PARKING AREA AT THE EAST END OF THE PARK AND THE STATION JUST SOUTH OF THE PARKING AREA ON A LOW HILL.

THE STATION MARK IS A STANDARD DISK CEMENTED IN A DRILL HOLE IN THE TOP OF A BOULDER WHICH IS ABOUT 4 FEET IN DIAMETER AND PROJECTS ABOUT 3 FEET ABOVE THE GROUND SURFACE. THE STAMPING ON THE DISK HAS BEEN DEFACED BUT THE DISK IS STILL SOLID. IT IS 71 FEET NORTH OF THE HIGHWATER LINE, 24.5 FEET WEST OF THE WEST SIDE OF A LARGE BOULDER, 14 FEET SOUTH OF A FOOT PATH AND 4.5 FEET NORTH OF A METAL WITNESS POST.


In any case enjoy your visit of Hammonasset Beach State Park.
Condition: Mark found in good condition

Designation: HAMMONASSET 3

Benchmark Agency: U.S. Coast & Geodetic Survey

Monumentation type: TRIANGULATION STATION Disk

County: New Haven County

USGS 7.5' Topographic Quadrangle Name (optional): Clinton Quad

Find type: Found by luck/skill/knowledge

Web address of this benchmark's datasheet (optional): [Web Link]

NGS PID: LX6333

Local database's URL (optional): [Web Link]

Benchmark Agency (if other): Not listed

Monumentation type (if other): Not listed

Special category (optional): Not listed

Special Category (if other): Not listed

Visit Instructions:
  1. A closeup photo of the mark taken by you is required.
  2. A 'distant' photo including the mark in the view is highly recommended. Include the compass direction you faced when you took the picture.
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petendot visited LX6333 - HAMMONASSET 3 - Madison, CT 09/20/2018 petendot visited it