Re: Plumb-Bobs to GPS at the Washington County Historical Society

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cnite51@aol.com
Wed, 10 Sep 2008 11:29:09 EDT



From: cnite51@aol.com
Message-ID: <c22.45b6fa52.35f941c5@aol.com>
Date: Wed, 10 Sep 2008 11:29:09 EDT
Subject: Re: Plumb-Bobs to GPS at the Washington County Historical Society

The boundaries of a township are not physical--no tree, or rock, or river, like when George Washington did his surveying. It all comes from the Land Survey Grid System (LSGS), which was created many years ago. The LSGS used a Meridian and Base Line. For most states, they don't have their own, and go off of the National one, but Michigan has its own set. I used to work on a survey crew. However, like all surveys, the markers are buried, and you need a survey description to know where to look. They even buried under roads, and you'll see evidence if they've been recently accessed (about a 4-6 inch hole in asphalt, etc. to be able to set up a target over it). Calling and talking with the speakers at the Washington County event would be able to give you more specific info--dates when LSGS, etc.
  Carolyn Knight
_cnite51@aol.com_ (mailto:cnite51@aol.com) 920-485-0668

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This archive was generated on Wed Sep 10 2008 - 10:36:46 Central Daylight Time