Below you will find information on the different maps you can view on the map, and also important copyright and licensing information.
Ordnance Survey Maps The Ordnance Survey raster maps (Explorer and Landranger) are made available to the Tamar Valley AONB under the Public Service Mapping Agreement (licence number 100051681). They remain Crown Copyright and printing of these layers by anyone outside other than AONB staff is prohibited. The 1:10000 layer is available under the OpenData scheme and as such can be printed, distributed and used by anyone.
First Edition Ordnance Survey Map Although the map itself is old enough to be out of copyright, it has been scanned and a new copyright exists on the digital version. This is made available to Cornwall Council under license from Landmark Information Group and printing is again prohibited. To view a key for the symbols please click here.
Tithe Map The Tithe map itself dates to approximately 1840. The Tithe Commutation Act of 1836 meant that Tithes (or rents) owed to the church could be paid in money rather than the original requirement of 10% of produce from the land. For each parish parcels of land were numbered and details of ownership, tenant, field name, land use, acreage and rent due recorded for each. Instead of displaying the map itself we have transformed it into a transparent layer where you can view the associated record by clicking on the field (or holding).
Because the Tithe maps were not drawn and surveyed to the same standards as later maps, we have to stretch and adjust the picture to find a ‘best fit’ with modern maps, a process called georectification. This is why many of the field boundaries featured on the Tithe maps that still exist appear to be slightly misaligned with the modern mapping. Another problem is that some of the original maps are damaged. This makes is very difficult to get all of the holding numbers and even some of the boundaries off of the maps. This means that some polygons overlap where it is impossible to tell where the holdings end. Where some of the scanned documents are not available at optimum resolution there can also be a problem with very small holdings being difficult to read and interpret. Where the number is obscured or illegible we have marked it as such.
The original map for each parish can be viewed in the Cornwall Record Office, along with the written apportionments. The Tamar Valley AONB retains the copyright to the digitised information.
Archaeology The data within this layer is drawn from Cornwall Council’s Historic Environment Record (HER). Each county has an HER (sometimes called a Sites and Monuments Record, or SMR) which comprise lists of known archaeology and historic buildings in the county. It is consulted during the planning process and is generally updated through reports submitted after archaeological works in the area. To find out more about the HER visit Cornwall Council’s website here.
The information on the interactive map is not a live link to the Cornwall Council database. The data was last updated on 13th June 2011 and will be updated quarterly from when the map went online. The data remains copyright of Cornwall Council. It should not be used as a definitive dataset but as a guide; it is inevitable that there is further archaeology to be recorded and that there will be a time lapse between discovery and inclusion on the HER. For full information on use constraint and Intellectual Property Rights please click here to download the metadata document.
The Heritage Gateway is an English Heritage website which simultaneously searches many HERs around the country as well as national datasets such as listed buildings and scheduled monuments information. It also searches some photographic information; Images of England shows photographs and record details of listed buildings as at the millennium, while ViewFinder displays historic photographs. It is important to note that while English Heritage holds millions of photographs only a small number of these are available online. Others can be viewed by contacting the National Monuments Record.