Key Biscayne N Base Reset - U.S. Benchmarks on Waymarking.com

A triangulation survey was conducted by the U.S. Coast Survey with men detailed from the U.S. Army and U.S. Navy. Alexander Dallas Bache, Superintendent of the U.S. Coast Survey, went to Key Biscayne in 1855 to take personal charge of the survey. The survey eventually included Key Biscayne, Biscayne Bay, the Florida Keys from south of Key Biscayne to the Marquesas Keys, and Florida Bay from the Keys to Cape Sable. The north base marker for Key Biscayne was reported lost in 1945 but was then discovered in 1970 as workers were clearing land for the Key Biscayne Golf Course. It was at first mistaken as a gravestone for someone named A. D. Bache. The underground granite block was found in place but the top monument was found on its side. The monument was reset over the underground mark in its original position as described below.

Taken from original data sheet -
"THE STATION MARK IS A FINELY DRESSED GRANITE MONUMENT 16 INCHES SQUARE AND 3 FEET HIGH WITH A PYRAMIDAL TOP PROJECTING ABOUT 2 FEET ABOVE THE GROUND. THE VERTICAL FACES OF THE MONUMENT ARE INSCRIBED AS FOLLOWS: NORTH FACE - BASE NO 7 N., EAST FACE - U.S. COAST SURVEY, SOUTH FACE - A.D. BACHE SUPT., AND WEST FACE - 1855. THIS MONUMENT IS RESTING ON TOP OF A GRANITE BLOCK 3 FEET SQUARE AND 2 FEET THICK WHICH IS ABOUT 1 FOOT BELOW THE GROUND AND HAS A 3/4-INCH COPPER PLUG IN IT MARKED BY A CROSS."

(above information taken from original data sheet and Joan Gill Blank's book, Key Biscayne, 1996)

The monument is located off the 10th hole along a golf cart path at the Crandon Park Golf Course on Crandon Drive, Key Biscayne. It is marked with a historical marker. The mark is an easy walk from the parking lot.

Condition: Mark found in good condition Designation: Base No. 7 North Benchmark Agency: other (not included below) Benchmark Agency (if other): U.S. Coast Survey Monumentation type: other (not any of the below) Monumentation type (if other): 16 inch square granite post 3 feet high with pyramidal top County: Dade County Find type: Coordinates and/or to-reach information from the NGS database (or Geocaching's copy of it) were used Web address of this benchmark's datasheet (optional): [Web Link] NGS PID: AC3728 USGS 7.5' Topographic Quadrangle Name (optional): Not listed Special category (optional): Not listed Special Category (if other): Not listed Local database's URL (optional): Not listed

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