Long Eau

{{Short description|River in Lincolnshire, England}}

{{Use dmy dates|date=April 2022}}

File:Long_Eau_at_Carlton_Grange.jpg

The Long Eau is a river in Lincolnshire, England, rising from the Chalk Streams of the Lincolnshire Wolds and joining its companion stream, the Great Eau south of Saltfleetby All Saints.{{cite web|title=Steeping, Great Eau and Long Eau CAMS area overview|url=http://www.environment-agency.gov.uk/static/documents/Business/Steeping_CAMS_Consult_Doc_part1.pdf|work=The Steeping, Great Eau and Long Eau Catchment Abstraction Management Strategy|publisher=Environment Agency|accessdate=18 May 2013|pages=3|date=January 2007|url-status=dead|archiveurl=https://web.archive.org/web/20120905201417/http://www.environment-agency.gov.uk/static/documents/Business/Steeping_CAMS_Consult_Doc_part1.pdf|archivedate=5 September 2012}} (map)

The Long Eau drains a small catchment of 22.3 km2.{{cite web|title=Long Eau |url=http://riverwiki.restorerivers.eu/wiki/index.php?title=Case_study%3ALong_Eau_%28Great_Eau%29 |accessdate=2 June 2013}}

The placename element Eau for a river is common in Lincolnshire and comes not from the French, but from Old English Ea - a river, related to modern Germanic Aa.{{cite book|last=Partridge|first=Eric|title=Origins: A Short Etymological Dictionary of Modern English|publisher=Routledge|pages=129|url=https://books.google.com/books?id=xA9dxrhfa5kC&pg=PA129|accessdate=18 May 2013|date=5 Sep 1977|isbn=9780415050777}}