Head of tide, tidal limit[2] or tidehead[3] is the farthest point upstream where a river is affected by tidal fluctuations,[4] or where the fluctuations are less than a certain amount.[5] The river section influenced by tides and marine forces but without salinity is a tidal river, while downstream areas are brackish and termed estuaries.[6]
Though this point may vary due to storms, spring tides, and seasonal or annual differences in water flows, there is generally an average point that is accepted as the head of tide (in Great Britain this is the Normal Tidal Limit, typically noted on Ordnance Survey maps as 'NTL').[1] The head of tide is important in surveying, navigation, and fisheries management, and thus many jurisdictions establish a legal head of tide. As the head of tide is useful for navigation, separate maps can be made of the tidal zones up to the head of tide, such as was done in New Jersey.[7]
^William H. Conner; Thomas W. Doyle; Ken W. Krauss (24 June 2007). Ecology of Tidal Freshwater Forested Wetlands of the Southeastern United States. Springer Science & Business Media. p. 36. ISBN978-1-4020-5095-4.
^Hoitink, A. J. F.; Jay, D. A. (2016). "Tidal river dynamics: Implications for deltas". Reviews of Geophysics. 54 (1): 240–272. Bibcode:2016RvGeo..54..240H. doi:10.1002/2015RG000507. S2CID 130986687.
head, tide, tidal, limit, tidehead, farthest, point, upstream, where, river, affected, tidal, fluctuations, where, fluctuations, less, than, certain, amount, river, section, influenced, tides, marine, forces, without, salinity, tidal, river, while, downstream,. Head of tide tidal limit 2 or tidehead 3 is the farthest point upstream where a river is affected by tidal fluctuations 4 or where the fluctuations are less than a certain amount 5 The river section influenced by tides and marine forces but without salinity is a tidal river while downstream areas are brackish and termed estuaries 6 Cromwell Weir marks the tidal limit of the River Trent a major river in England 1 Though this point may vary due to storms spring tides and seasonal or annual differences in water flows there is generally an average point that is accepted as the head of tide in Great Britain this is the Normal Tidal Limit typically noted on Ordnance Survey maps as NTL 1 The head of tide is important in surveying navigation and fisheries management and thus many jurisdictions establish a legal head of tide As the head of tide is useful for navigation separate maps can be made of the tidal zones up to the head of tide such as was done in New Jersey 7 The head of tide may be many miles upstream from the river s mouth For example on the Hudson River it is located 140 miles 225 km upstream near Albany New York 8 On the Saint Lawrence River tides affect the river up to Lake St Pierre 9 See also editTidal bore Tidewater region The Tideway Mean high waterReferences edit a b 121 Lincoln amp Newark on Trent Map 1 50 000 OS Landranger Map Series Ordnance Survey 2004 ISBN 9780319227213 tidal limit Australian Water Information Dictionary Commonwealth of Australia Bureau of Meteorology 2015 Retrieved 22 February 2015 Tidehead Merriam Webster com Dictionary Merriam Webster Retrieved 19 September 2020 Richard A Davis Jr Richard A Davis Jr Robert W Dalrymple 20 October 2011 Principles of Tidal Sedimentology Springer Science amp Business Media p 82 ISBN 978 94 007 0123 6 William H Conner Thomas W Doyle Ken W Krauss 24 June 2007 Ecology of Tidal Freshwater Forested Wetlands of the Southeastern United States Springer Science amp Business Media p 36 ISBN 978 1 4020 5095 4 Hoitink A J F Jay D A 2016 Tidal river dynamics Implications for deltas Reviews of Geophysics 54 1 240 272 Bibcode 2016RvGeo 54 240H doi 10 1002 2015RG000507 S2CID 130986687 New Jersey Archived 2013 02 13 at the Wayback Machine Tides in the Hudson River PDF The St Lawrence Retrieved from https en wikipedia org w index php title Head of tide amp oldid 1182351614, wikipedia, wiki, book, books, library,
