-------- Original Message -------- Subject: Re: Fw: T - symbol on topographic maps Date: Wed, 14 Oct 2009 11:30:20 -0400 From: Cheryl R O'Brien <[log in to unmask]> To: [log in to unmask] CC: Robert A Bier <[log in to unmask]> References: <OF74B3B59C.D984DD77-ON8525764E.005421B3-8525764E.00543941@LocalDomain> The Bat Cave, NC 1:24,000-scale topographic map was made by the Tennessee Valley Authority and the symbol that they used isn't in USGS specifications. We contacted TVA and they said that it is some type of transmission line, probably a telephone line. They used the symbol in early mapping before they determined that it was impossible to keep up with all of the transmission lines. Cheryl O'Brien U.S. Geological Survey 507 National Center 12201 Sunrise Valley Dr. Reston, VA 20192 (888) ASK-USGS (703) 648-5929 Fax: (703) 648-5548 [log in to unmask] From: Robert A Bier/RGIO/USGS/DOI To: Cheryl R O'Brien/RGIO/USGS/DOI@USGS Date: 10/13/2009 11:20 AM Subject: Fw: T - symbol on topographic maps ------------------------------------------------------------------------ Here is the original list-serve e-mail. Bob Bier Chief - Public Services 950 National Center; Room 1D-100 12201 Sunrise Valley Drive Reston, VA 20192 703-648-6207 ----- Forwarded by Robert A Bier/RGIO/USGS/DOI on 10/13/2009 11:19 AM ----- From: Maps-L Moderator <[log in to unmask]> To: [log in to unmask] Date: 10/12/2009 04:20 PM Subject: T - symbol on topographic maps Sent by: "Maps, Air Photo & GIS Forum" <[log in to unmask]> ------------------------------------------------------------------------ -------- Original Message -------- Subject: T T T T T T T Date: Mon, 12 Oct 2009 15:20:10 -0500 From: Mike Flannigan <[log in to unmask]> To: [log in to unmask] I just saw this on a 7.5' topo map in North Carolina (T T T T T T T): http://terraserverusa.com/map.aspx?t=2&s=12&lon=-82.33250&lat=35.47211&opt=1 <http://terraserverusa.com/map.aspx?t=2&s=12&lon=-82.33250&lat=35.47211&opt=1> Sure looks like telephone poles to me, but that symbol is not on the Topo Map Symbols (Part 5) that I have. Anybody know what those T's are? Mike Flannigan