On 23 Aug 2009, at 15:52, Bogus Zaba wrote: > Peter Miller wrote: >> >> On 22 Aug 2009, at 12:03, Chris Hill wrote: >> >>> Well I'm pleased that they agree with me, but I'm not the oracle! >>> This is another source quoting the same general information. Do >>> the Scottish and Northern Irish counties generally extend to the >>> low water mark too? Drawing from the NPE maps seems to be our only >>> reasonable source for the low water mark. >> >> Great stuff. >> >> Low water does however change much more rapidly that high water so >> NPE is the 'least good' source of that date as it is 50 years old. >> If one is fortunate enough to have detailed enough recent aerial >> photography that that should be used. >> >> Fyi, for Suffolk the low water mark has changed by 50 meters in >> places in the past 5 years (huge amounts of shingle has arrived >> near Felixstowe Ferry extending low water by that amount since I >> have lived in the area). Even the high water mark has moved by many >> meters over 50 years in some places including Dunwich. One can see >> the different in Potlatch comparing the OSM coastline with NPE base >> mapping. >> >> We have good yahoo aerial photography for pasts of the coast in >> Suffolk. >> >> However... I support the idea we use best low-water source availale >> for each area. It might be good to create areas between high and >> low water tagged with 'shingle', 'beach' etc. >> >> Should be also use low water as the edge of 'Wales' itself or has >> any evidence for the 3 mile limit mentioned by the wiki by someone >> been found? >> >> Regards, >> >> >> Peter >> >> >>> >>> Bogus Zaba wrote: >>>> I have had confirmation from the Local Government Boundary >>>> Commission for Wales who agree with the view below from Chris >>>> Hill. They say : >>>> "...in general the seaward extent of a local authority is the low >>>> water mark as defined by Ordnance Survey. The exception to this >>>> are certain islands such as Flat Holm (which comes under >>>> Cardiff), where the courts have made specific decisions, such as >>>> Milford Haven, and where the Secretary of State has made an Order >>>> extending the local authority boundary to include an area of the >>>> sea (under Section 71 of the 1972 Act). As far as I am aware no >>>> such orders have been made in respect of Welsh local authorities." >>>> >>>> That's good enough for me. I will define the low water mark from >>>> NPE and use that in the Flinthsire and Denbighshire boundaries. >>>> >>>> Bogus Zaba >>>> > Regarding the Wales national boundary I should have mentioned that > my contact at the Local Govt Boundary Commission for Wales also > answered this partially. Words were : > " > > As far as I am aware Wales by itself does not have territorial > waters. I think it just has the UK territorial waters because it is > part of the UK. The Commission no longer have any remit for the > Wales National Boundary as the section dealing with this was > repealed from the 1972 Act some time ago. For our work we consider > Wales to be the sum of the LA boundaries. > > "
Good work. Could you copy this text onto the Wales wiki page? I think we should take that as a good enough answer that we should treat the edge of Wales and low water. Regards, Peter > > Bogus > _______________________________________________ Talk-GB mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-gb
