Drainage changes in Britain since 1840 : the study of 18 small basins by the attestation of Odnance Survey large-scale maps

Abstract

Throughout Britain, changes in drainage network extent over the last 150 years are identified for 18 British catchments representing a wide variety of basin types and environments. 89% of the catchments examined demonstrate extension of the drainage network which' ranges from a 2.68% increase in the Plym basin to a 438% increase in the catchment of the Hodge Beck.Several potential data sources are examined,concluding that five editions of Ordnance Survey 1:10560 and 1:10000 Series maps provide an important and unrivalled source of historical data for the study of drainage network change. The data these maps afford are substantiated and explored by field survey for eleven basins, enabling significant amounts of network change to be attributed to flush metamorphosis (9 basins), pipe burst (9 basins) forest or agricultural drains (10 basins) and urbanisation, construction work and storm water disposal (6 basins).The monitoring, by repeated cross-sectional measurements, of sites of network extension by the natural metamorphosis of flushes at Plynlimon Central Wales, and man-induced link creation in the New Forest, Hampshire, indicates trigger mechanisms' and processes responsible for drainage network extension. These identified processes and controls are combined with important catchment parameters controlling change (identified by regression analysis and field survey) to form a provisional model for drainage network change.

More information

Identifiers

Catalogue record

Export record

ASCII CitationAtomBibTeXData Cite XMLDublin CoreDublin CoreEP3 XMLEndNoteHTML CitationHTML CitationHTML ListJSONMETSMODSMPEG-21 DIDLOpenURL ContextObjectOpenURL ContextObject in SpanRDF+N-TriplesRDF+N3RDF+XMLRIOXX2 XMLReferReference ManagerSimple Metadata