Tinho I think the organisation most directly and proprietorially concerned with high and low water marks is probably the Crown Estate Office, as these marks are the upper and lower limits of the foreshore as Crown property. The Crown Estate Office might know if any organisation has digitised such data for legal and administrative purposes. At the Forum on Maps and Plans, staged by the Public Record Office on 14 March 1990 at the annual meeting of Record Officers in Government Departments, one of the speakers, Peter Davies, of the Crown Estate Office, gave a paper on his office's use of maps and plans for monitoring the Crown's legal property interest in foreshore encroachment. I remember, I think, that the discussion also turned to the tidewater photograpy flown by the RAF, originally for OS, but later for DoE, to monitor coastal change, particularly in estuaries. I hope that, eight years later, there may be enough information here to enable your colleague to get in touch with the office and people he probably needs to talk to. Andrew Dr A S Cook Map Archivist India Office Records The British Library 96 Euston Road E-mail: [log in to unmask] London NW1 2DB Phone: +44 171 412 7828 United Kingdom Fax: +44 171 412 7858 ______________________________ Reply Separator _________________________________ Subject: Borrowing Historic Maps of Estuaries Author: Tinho da Cruz <[log in to unmask]> at Internet Date: 30/10/98 14:23 Dear friends, Below is a query from a member of staff here in my department. Essentially he wants digital data for old high and low water marks and thus needs to BORROW maps to digitise from them (or purchase the data should it be digitised). If anyone has any ideas of other sources of information I'm sure that he'd be interested. Many thanks Tinho Dear Map Curator, I am currently putting together a proposal for submission to MAFF concerning the response of estuaries to climate and environmental change. I would like to include a list of the availability of cartographic data at 1:25000 and 1:10000 back to about AD 1800. As University map libraries tend to be rather region-specific to some degree, I would be very grateful to receive information concerning map collections on the major estuaries, e.g. Thames, Medway, Southampton Water, Poole Harbour, Tamar, Severn/Bristol Channel, Taff, Tawe, Dee, Mersey, Ribble, Morecambe Bay, Solway Firth, Clyde, Forth, Tees, Humber, The Wash (and others that I've probably overlooked). Ideally, I'd like to have snapshots of these sites (mainly MHW and MLW) at about 1950, 1900 and 1800-1850. In providing your information, some idea of the cost involved in borrowing these maps would be very useful. Indeed, if you already have a digitized from of the high- and low-water marks, and the distributions of sand, mud and marsh... that would be excellent. Again, some costing for obtaining this information (and its format) would be greatly appreciated. I look forward to hearing from you Dr. Andrew J. Plater <[log in to unmask]> Department of Geography, Roxby Building, University of Liverpool, LIVERPOOL L69 3BX Telephone: 0151 794 2843 Fax: 0151 794 2866 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%