Detailed River Network

The Detailed River Network (DRN) is the only large-scale, accurate and fully attributed digital river centreline covering England and Wales. The DRN is partially captured from the water features theme of the OS MasterMap Topographic layer and built into a network using automated rules and supplemented with Environment Agency field surveys. Other input datasets and extensive local Environment Agency staff knowledge has been used to augment the core geometry to incorporate critical spatial detail and attribution, such as flow direction and path, not available from the OS mapping and to verify the accuracy of the centreline itself. The dataset has full-feature network geometry cross-referenced with OS MasterMap following Digital National Framework principles. The DRN includes a thematic layer titled Indicative Main River that has been created by an automated query comparing the official Main River layer with the DRN. The Indicative Main River thematic layer should only be used as a guide as to whether a watercourse is designated as a Main River (later versions will formalise this association along with WFD river Waterbodies).

Данни и ресурси

Допълнителна информация

Поле Стойност
access_constraints ["Licence"]
bbox-east-long 2.081163
bbox-north-lat 55.811505
bbox-south-lat 49.939949
bbox-west-long -6.250258
coupled-resource []
dataset-reference-date [{"type": "creation", "value": "2008-05-05"}, {"type": "revision", "value": "2008-06-01"}, {"type": "publication", "value": "2008-06"}]
frequency-of-update asNeeded
guid {B847B037-5C91-442B-A28D-B61728B65C8C}
licence ["Use limitation dependent upon licence."]
metadata-date 2011-11-09
metadata-language eng
openness_score 0
openness_score_last_checked 2011-06-06T14:29:53.577370
published_by 16185
resource-type dataset
responsible-party Environment Agency - National Customer Contact Centre (pointOfContact)
spatial {"type":"Polygon","coordinates":[[[2.081163, 49.939949],[2.081163, 55.811505], [-6.250258, 55.811505], [-6.250258, 49.939949], [2.081163, 49.939949]]]}
spatial-reference-system urn:ogc:def:crs:EPSG::27700
temporal_coverage-from ["2008-06-01"]
temporal_coverage-to ["2012-03-31"]