DOCSLIB.ORG

Native Crayfish Project East Hampshire Rivers Survey

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Native Crayfish Project East Hampshire Rivers Survey NATIVE CRAYFISH PROJECT EAST HAMPSHIRE RIVERS SURVEY AND THE 1997 INTERIM REPORT ON THE PROJECT Prepared for The Environment Agency (Southern Region), English Nature (Species Recovery Programme) and The East Hampshire AONB Project Adrian Hutchings, Project Manager Carol Elliott, Project Assistant Dept. of Fish, Game and Wildlife Management, Sparsholt College, Winchester, Hampshire. SO21 2NF February, 1998 Native Crayfish Project Hampshire EXECUTIVE SUMMARY This is an interim report of a long-term study of the native White-clawed or Atlantic Stream crayfish Austropotamobius pallipes Lereboullet in Hampshire. It principally details the findings of the 1997 survey and monitoring effort in selected rivers and streams in Hampshire, with particular attention to those in the north and east of the County. The survey identified the presence of A. pallipes in the River Rother (Arun catchment) and the Lower Test, the latter being discovered in early 1998. This brings the total known native crayfish sites in Hampshire to six. The Candover Brook population is potentially the largest in Hampshire, but the native crayfish on the Rother appear to be widespread. In contrast the populations in the River Anton and possibly the Lower Test appear to be small and highly vulnerable to extinction. In addition monitoring programmes are now in place for three of the four previously known populations of native crayfish. There appears to be little change in the Upper Candover Brook population over the year, remaining healthy and stable, whilst monitoring has only just started in the two other locations. Signal crayfish P. leniusculus have been found in most rivers surveyed in 1997, including the rivers Anton, Southern Wey, Lyde and Whitewater, and some of these populations are substantial. At several locations both signal and native crayfish can be found in close proximity, the Rivers Anton and Rother being good examples of this. The reasons for the continued survival of native crayfish in these areas is unclear. The Lower Test native crayfish discovery is a highly significant one, being the only lower river population in Hampshire, if not in Southern England generally, and having survived with signal crayfish directly upstream. There are many implications of this find, including giving some hope to discovering other populations of native crayfish in the main Hampshire Rivers. Recommendations are given for conserving the recently discovered populations of native crayfish. This survey represents the largest undertaken by the Native Crayfish Project to date and has substantially enhanced the existing information on the distribution of crayfish species in Hampshire. Native Crayfish Project Hampshire Confidentiality This report contains confidential and sensitive information on the location of an endangered Red Data Book species. It is requested that the locational details of native crayfish in Hampshire remain confidential. In addition all sites where this species is found are in private ownership. Access to the sites should be strictly controlled and only permitted through consultation with the riparian owners, the Environment Agency, English Nature and the manager of the Native Crayfish Project, Sparsholt College Hampshire. Acknowledgements The Authors would like to thank the Environment Agency (Southern Region, Conservation Section), the Species Recovery Programme of English Nature and the East Hampshire AONB Project for their generous support of this work. The assistance in the field by Alison Strange, Susan McIntosh and Howard Colmer is especially acknowledged. Finally, but most important, the many waterkeepers and riparian owners for their help and enthusiasm towards this beleaguered species in Hampshire. Report circulation: Dr. Mary Gibson English Nature (Peterborough) Tim Sykes Environment Agency (Southern Region) Alison Tingley East Hants AONB Project Clive Chatters Hampshire Wildlife Trust Jonathan Brickland Environment Agency (North East Region) Ian Davidson-Watts English Nature (Hampshire Team) Alastair Driver Environment Agency (Thames Region) Mark Elliott Environment Agency (Southern Region) Dr. J. Foster Environment Agency (Southern Region) Jim Glasspool Test and Itchen Association Dr. D. Holdich Nottingham University Shirley Medgett Environment Agency (Southern Region) John Millikin Environment Agency (Southern Region) Dr. R. Mitchell English Nature (Species Recovery Programme) Mike Mullins Environment Agency (Southern Region) Martin Noble Forestry Commission (New Forest) David Pape Hampshire County Council Planning Dept. Graham Roberts SE Region Otters Project Stuart Taylor Environment Agency (Southern Region) David Webb Environment Agency (Thames Region) Lord Ashburton Landowner Mr. W.P Cleland Landowner Mr. M Davy Landowner Mr. R Harrison Landowner Mr. M.J Isaac Landowner Mr. K Kayser Landowner Mr P. Moncaster Water Keeper Native Crayfish Project Hampshire CONTENTS Page Executive Summary 1 Confidentiality 2 Acknowledgements 2 Report circulation list 2 1.0 Introduction 1.1 Legislative background and status of A. pallipes and P. leniusculus 5 1.2 The Native Crayfish Project Hampshire 6 1.2.1 The context of this report 6 2.0 Rivers Survey 2.1 Aims 7 2.2 Extent of survey in 1997 7 2.3 Survey methodology 8 2.4 Limitations of the survey 9 3.0 Survey Results 3.1 Confirmed Native Crayfish locations 10 3.1.1 The River Rother 10 3.1.2 The Lower Test 12 3.1.3 The Lower Candover Brook (Itchen Catchment) 13 3.2 Confirmed Signal Crayfish locations 15 3.2.1 The Southern River Wey 15 3.2.2 The River Loddon (Thames Catchment) 15 3.2.3 The River Lyde (Thames Catchment) 16 3.2.4 The River Whitewater (Thames Catchment) 17 3.2.5 The Upper Basingstoke Canal 17 3.2.6 The River Rother 18 3.2.7 The Upper River Test 18 3.2.8 The River Anton (Test Catchment) 19 3.2.9 The River Dever (Test Catchment) 19 3.2.10 The Crampmoor Stream (Test Catchment) 20 3.2.11 The River Itchen at Winnal 20 3.3 Discussion 3.3.1 The distribution of native crayfish A. pallipes in Hampshire 22 3.3.2 The distribution of signal crayfish P. leniusculus in Hampshire 23 Native Crayfish Project Hampshire Contents continued Page 4.0 Monitoring Programme 4.1 Monitoring methodology 24 4.2 Monitoring Results 4.1.1 River Anton 25 4.1.2 River Alre 26 4.1.3 Upper Candover Brook 26 4.3 Discussion 26 5.0 Other work carried out in 1997 28 6.0 Summary of the work in 1997 29 7.0 Summary of Recommendations for Future Work 30 References 32 Appendices Annex 1: Table 1. Survey Locations and Figure 1. Map identifying rivers mentioned in the report. Annex 2: Table 2. Results from all surveyed locations Annex 3: General habitat and survey notes/survey locations Annex 4: Figure 2. Location of the River Rother native crayfish population Annex 5 : Figure 3. Location of the Lower Test native crayfish population Annex 6: Figure 4. Location of the lower Candover Brook native crayfish population Annex 7; Figure 5. The known distribution of A. pallipes in Hampshire upto January, 1998 Annex 8: Figure 6. The known distribution of P. leniusculus in Hampshire upto January 1998 Annex 9: The standard monitoring procedure (revised January, 1998) Annex 10: Figure 7 Chart showing the age structure of the native crayfish population in the Upper Candover Brook Annex 11: Figure 8. Composite map of native and signal crayfish locations in Hampshire Annex 12: Provisional Action Plan for native crayfish in Hampshire Native Crayfish Project Hampshire 1.0 INTRODUCTION The native crayfish Austropotamobius pallipes Lereboullet is considered to be an endangered species in Europe (Groombridge, 1993). The decline of A. pallipes is well documented and is widely attributed to the introduction of the North American signal crayfish ( Pacifasticus leniusculus Dana), which is a vector of the so called “crayfish plague” - a highly infectious disease caused by the fungus Aphanomyces astaci Schikora (Holdich and Reeve, 1991, Holdich et al, 1995). Several other causal factors may also be important in the decline of this species, including habitat modification, pollution and competitive exclusion by non-native crayfish species, where on the rare occasions mixed populations exist (Holdich and Reeve, 1991). Holdich et al (1995) suggest that 77% of British recorded sites for A pallipes have been or are under threat from crayfish plague or adverse water quality. Hampshire is no exception to this with native crayfish now confined to a small number of sites. Whilst crayfish plague has only been confirmed locally in the Hampshire Avon (David Alderman, pers. comm.) it is still likely that this disease is the main reason for the decline of this species in the County. Much of the information on the status and distribution of A. pallipes in Hampshire is however anecdotal and historical, but in recent years the Native Crayfish Project based at Sparsholt College has begun to fill the gaps. This report is the culmination of the 1997 survey effort and provides fresh information on the known locations of both native and signal crayfish and reports on the health of the surviving populations of native crayfish. 1.1 Legislative background and status The native crayfish is recognised as being globally threatened and as such it is classed as endangered in the IUCN Red Data Book (Groombridge, 1993). A national action plan has been prepared for this species, which is reported in “Biodiversity, the UK Steering Group Report” (Palmer, 1995). In Britain A. pallipes is still relatively widespread, but is listed under Schedule 5 of the Wildlife and Countryside Act, 1981, providing protection against taking from the wild or sale and advertisement for sale. A. pallipes is also listed in Appendix III of the Berne Convention and Annexes II and V of the EU Habitats and Species Directive (92/43/EEC), which means that efforts should be made to conserve A.pallipes habitat, including the designation of Special Areas for Conservation (SACs). The introduction of signal crayfish ( P. leniusculus ) is controlled in statute under Section 14 of the Wildlife Countryside Act, 1981 and under Article 22 of the EEC Habitats and Species Directive.
Load more

Recommended publications
  • Solent & South Downs Fish Monitoring Report 2015
    Solent & South Downs fish monitoring report 2015 We are the Environment Agency. We protect and improve the environment and make it a better place for people and wildlife. We operate at the place where environmental change has its greatest impact on people’s lives. We reduce the risks to people and properties from flooding; make sure there is enough water for people and wildlife; protect and improve air, land and water quality and apply the environmental standards within which industry can operate. Acting to reduce climate change and helping people and wildlife adapt to its consequences are at the heart of all that we do. We cannot do this alone. We work closely with a wide range of partners including government, business, local authorities, other agencies, civil society groups and the communities we serve. Authors: P. Rudd & L. Swift Published by: Environment Agency Further copies of this report are available Horizon house, Deanery Road, from our publications catalogue: Bristol BS1 5AH www.gov.uk/government/publications Email: [email protected] or our National Customer Contact Centre: www.gov.uk/environment-agency T: 03708 506506 Email: [email protected]. © Environment Agency 2014 All rights reserved. This document may be reproduced with prior permission of the Environment Agency. 2 of 77 Foreword Welcome to the annual fish report for the Solent and South Downs area for 2015. This report covers all of the fisheries surveys we have carried out in Hampshire and West & East Sussex in 2015 and is the ninth annual report we have produced in succession.
    [Show full text]
  • Sutton Scotney, Winchester, Hampshire, SO21 3JT
    Sutton Scotney, Winchester, Hampshire, SO21 3JT WINCHESTER | A L R E S F O R D | A L T O N | FARNHAM | LONDON 2 Sutton Scotney, Winchester, Hampshire, SO21 3JT Elegant, restored and extended 18th Century Grade II Listed village house of over 4200 sq ft Winchester Railway Station – London Waterloo: 57 minutes Micheldever Railway Station – London Waterloo: 63 minutes (Times approximate) •Entrance hall •Bespoke kitchen/breakfast room •Reception room •Family/dining room •Drawing room •Utility room •Cellar •Master bedroom suite with en-suite bathroom and dressing room •Five further bedrooms •Double car port •Gardens •Planning permission for barn style detached residence available by separate treaty WINCHESTER ALRESFORD ALTON FARNHAM LONDON 3 SITUATION Set in glorious Hampshire countryside, Sutton Scotney is a small village, Winchester is a splendid historic Cathedral city with much character Coast and country lifestyle pursuits are all within striking distance as the approximately 9 miles north of Winchester. It is mentioned in the yet with a modern cosmopolitan feel. As well as national retail chains, property is well placed for the South Downs National Park and The Doomsday Book and lies in the River Dever valley, forming part of the Winchester is home to an array of independent boutique shops, fine New Forest. Wonston parish. The village has local shops and a pub, The Coach & restaurants, contemporary bars and an impressive farmers market. Horses which dates back to 1762. One of the best-known residents Schooling is typically outstanding. The local catchment schools are Communications are first class. There are fast links to London was J.
    [Show full text]
  • South East River Basin District Flood Risk Management Plan 2015 - 2021 PART B: Sub Areas in the South East River Basin District
    South East River Basin District Flood Risk Management Plan 2015 - 2021 PART B: Sub Areas in the South East river basin district March 2016 Published by: Environment Agency Further copies of this report are available Horizon house, Deanery Road, from our publications catalogue: Bristol BS1 5AH www.gov.uk/government/publications Email: [email protected] or our National Customer Contact Centre: www.gov.uk/environment-agency T: 03708 506506 Email: [email protected]. © Environment Agency 2016 All rights reserved. This document may be reproduced with prior permission of the Environment Agency. Contents Glossary and abbreviations ......................................................................................................... 5 The layout of this document ........................................................................................................ 7 1 Sub-areas in the South East river basin district .............................................................. 9 Introduction ................................................................................................................................. 9 Flood Risk Areas ......................................................................................................................... 9 Management catchments ............................................................................................................ 9 2 Conclusions, objectives and measures to manage risk for the Brighton and Hove Flood Risk Area..........................................................................................................................
    [Show full text]
  • Hinton Ampner Archaeological Survey Report, 2007
    WA Heritage THE NATIONAL TRUST ESTATE AT HINTON AMPNER, HAMPSHIRE Archaeological and Historical Survey Volume 1: Historical Text & Appendices Prepared for The National Trust Thames & Solent Region Stowe Gardens Buckingham MK18 5EH by WA Heritage Wessex Archaeology Portway House Old Sarum Park SALISBURY Wiltshire SP4 6EB Report reference: 67660.01 January 2008 © Wessex Archaeology Limited 2008 all rights reserved Wessex Archaeology Limited is a Registered Charity No. 287786 National Trust Estate WA Heritage Hinton Ampner, Hampshire THE NATIONAL TRUST ESTATE HINTON AMPNER HAMPSHIRE Archaeological and Historical Survey CONTENTS Summary …………..………………………………………………………………...…………iii Acknowledgements………………………………………………………………………….….v 1 INTRODUCTION ......................................................................................1 1.1 Project Background.................................................................................................1 1.2 Survey and Report Standards.................................................................................1 2 STRATEGY..............................................................................................2 2.1 Survey methodology ...............................................................................................2 2.2 Time expenditure ....................................................................................................2 2.3 Limitations to background research ........................................................................3 2.4 Limitations of the field
    [Show full text]
  • Planning Services
    TEST VALLEY BOROUGH COUNCIL – PLANNING SERVICES _____________________________________________________________________________________________________________ WEEKLY LIST OF PLANNING APPLICATIONS AND NOTIFICATIONS : NO. 47 Week Ending: 23rd November 2018 _____________________________________________________________________________________________________________ Comments on any of these matters should be forwarded IN WRITING (including fax and email) to arrive before the expiry date shown in the second to last column Head of Planning and Building Beech Hurst Weyhill Road ANDOVER SP10 3AJ In accordance with the provisions of the Local Government (Access to Information Act) 1985, any representations received may be open to public inspection. You may view applications and submit comments on-line – go to www.testvalley.gov.uk APPLICATION NO./ PROPOSAL LOCATION APPLICANT CASE OFFICER/ PREVIOUS REGISTRATION PUBLICITY APPLICA- TIONS DATE EXPIRY DATE 18/03025/TREEN Fell Fir Tree encroaching on Pollyanna, Little Ann Road, Mr Patrick Roberts Mr Rory Gogan YES 19.11.2018 Cherry tree; T1 Ash and T2 Little Ann, Andover Hampshire 21.12.2018 ABBOTTS ANN Ash both showing signs of SP11 7SN desease and some dieback (see full description on form) 18/03018/FULLN Change of use from Telford Gate, Unit 1 , Mr Ricky Sumner, RSV Mr Luke Benjamin 19.11.2018 factory/warehouse to general Hopkinson Way, Portway Services 12.12.2018 ANDOVER TOWN industrial to include vehicle Business Park, Andover SP10 (HARROWAY) repairs and servicing and 3SF MOT testing 18/03067/CLEN
    [Show full text]
  • Hamble River Logboat: Report on Recent Investigation by HWTMA
    Hamble River Logboat: Report on Recent Investigation by HWTMA Hampshire and Wight Trust for Maritime Archaeology September 2010 Hamble River Logboat Study Report Contents I. DOCUMENT CONTROL ........................................................................................................... 1 II. LIST OF FIGURES & TABLES .................................................................................................. 1 III. ACKNOWLEDGEMENTS......................................................................................................... 2 1. BACKGROUND .................................................................................................................... 2 1.1 PROJECT AIMS AND OBJECTIVES ........................................................................................ 2 1.2 THE RIVER HAMBLE ........................................................................................................... 2 1.3 HISTORY OF THE HAMBLE LOGBOAT ................................................................................... 2 1.4 THE HAMBLE LOGBOAT TODAY............................................................................................ 5 2. INVESTIGATION OF THE HAMBLE LOGBOAT................................................................. 6 2.1 DENDRO-CHRONOLOGY (BY NIGEL NAYLING)...................................................................... 6 3. ANALYSIS OF THE HAMBLE LOGBOAT........................................................................... 7 3.1 CONTEXT .........................................................................................................................
    [Show full text]
  • Using High-Frequency Phosphorus Monitoring for Water Quality Management: a Case Study of the Upper River Itchen, UK
    Environ Monit Assess (2020) 192:184 https://doi.org/10.1007/s10661-020-8138-0 Using high-frequency phosphorus monitoring for water quality management: a case study of the upper River Itchen, UK Gary R. Fones & Adil Bakir & Janina Gray & Lauren Mattingley & Nick Measham & Paul Knight & Michael J. Bowes & Richard Greenwood & Graham A. Mills Received: 16 July 2019 /Accepted: 5 February 2020 # The Author(s) 2020 Abstract Increased concentrations of phosphorus (P) in distinct locations in the upper River Itchen (Hampshire, riverine systems lead to eutrophication and can contribute UK) between May 2016 and June 2017 to identify the to other environmental effects. Chalk rivers are known to main P species (including filterable reactive phosphorus, be particularly sensitive to elevated P levels. We used total filterable phosphorus, total phosphorus and total par- high-frequency (daily) automatic water sampling at five ticulate phosphorus) present and how these varied tempo- rally. Our filterable reactive phosphorus (considered the biologically available fraction) data were compared with Electronic supplementary material The online version of this the available Environment Agency total reactive phospho- article (https://doi.org/10.1007/s10661-020-8138-0) contains supplementary material, which is available to authorized users. rus (TRP) values over the same sampling period. Over the trial, the profiles of the P fractions were complex; the : G. R. Fones (*) A. Bakir major fraction was total particulate phosphorus with the School of the Environment, Geography and Geosciences, mean percentage value ranging between 69 and 82% of University of Portsmouth, Burnaby Road, Portsmouth PO1 3QL, UK the total P present. Sources were likely to be attributable to e-mail: [email protected] wash off from agricultural activities.
    [Show full text]
  • East Woodhay
    Information on Rights of Way in Hampshire including extracts from “The Hampshire Definitive Statement of Public Rights of Way” Prepared by the County Council under section 33(1) of the National Parks and Access to the Countryside Act 1949 and section 57(3) of the Wildlife and Countryside Act 1981 The relevant date of this document is 15th December 2007 Published 1st January 2008 Notes: 1. Save as otherwise provided, the prefix SU applies to all grid references 2. The majority of the statements set out in column 5 were prepared between 1950 and 1964 and have not been revised save as provided by column 6 3. Paths numbered with the prefix ‘5’ were added to the definitive map after 1st January 1964 4. Paths numbered with the prefix ‘7’ were originally in an adjoining parish but have been affected by a diversion or parish boundary change since 1st January 1964 5. Paths numbered with the prefix ‘9’ were in an adjoining county on 1st January 1964 6. Columns 3 and 4 do not form part of the Definitive Statement and are included for information only Parish and Path No. Status Start Point (Grid End point (Grid Descriptions, Conditions and Limitations ref and ref and description) description) Footpath 3775 0098 3743 0073 From Road B.3054, southwest of Beaulieu Village, to Parish Boundary The path follows a diverted route between 3810 0150 and East Boldre 703 Beaulieu Footpath Chapel Lane 3829 0170 3 at Parish From B.3054, over stile, southwards along verge of pasture on east side of wire Boundary fence, over stile, south westwards along verge of pasture on southeast side of hedge, over stile, southwards along headland of arable field on east side of hedge, over stile, Beaulieu 3 Footpath 3829 0170 3775 0098 south westwards along verge of pasture on southeast side of hedge, through kissing Hatchet Lane East Boldre gate, over earth culvert, along path through Bulls Wood, through kissing gate, along Footpath 703 at gravel road 9 ft.
    [Show full text]
  • An Inventory of Churchyard Yews Along the Hampshire Test and Its Tributaries
    Hampshire Yews An Inventory of Churchyard Yews along the Hampshire Test and its tributaries Part 3 – The Lower Test By Peter Norton Introduction: The Test rises at Ashe, just to the west of Basingstoke and on its way through Hampshire is fed from many streams and brooks emanating from the west and one main stream from the east. After flowing through Stockbridge and Romsey, it converges in Southampton with the Itchen some 40 miles from its source. At this point it becomes Southampton Water which flows into the Solent before reaching the open sea. The west tributaries include the Bourne Rivulet, Anton, Wallop Brook, Dun, Blackwater and Bartley Water. The east tributaries include the Dever, Tadburn and Tanners Brook. The Lower Test This is the last of three reports that split the River Test into three sections; Upper, Middle and Lower. The Lower Test is described as from just north of Romsey to its confluence with the Itchen, covering a distance of some 12 miles by road. Along its path it is joined by the Tadburn, Blackwater, Bartley Water and Tanners Brook. All of the towns and villages along this part of the Test and its tributaries were included, with 18 churches visited, of which 12 contained yews. All churches are in Hampshire unless otherwise stated. Of the 26 yews noted at these sites, 11 had measurements recorded. The graph below groups the measured yews ac- cording to their girth, presented here in metric form. It does not include yews whose girth was estimated*. Where a tree has been measured at different heights, the measurement taken closest to the root/ground is used for this graph.
    [Show full text]
  • The Test Valley (Electoral Changes) Order 2018
    Draft Order laid before Parliament under section 59(9) of the Local Democracy, Economic Development and Construction Act 2009; draft to lie for forty days pursuant to section 6(1) of the Statutory Instruments Act 1946, during which period either House of Parliament may resolve that the Order be not made. DRAFT STATUTORY INSTRUMENTS 2018 No. LOCAL GOVERNMENT, ENGLAND The Test Valley (Electoral Changes) Order 2018 Made - - - - *** Coming into force in accordance with article 1(2) and (3) Under section 58(4) of the Local Democracy, Economic Development and Construction Act 2009( a) (“the Act”), the Local Government Boundary Commission for England( b) (“the Commission”) published a report dated October 2017 stating its recommendations for changes to the electoral arrangements for the borough of Test Valley. The Commission has decided to give effect to those recommendations. A draft of the instrument has been laid before each House of Parliament, a period of forty days has expired since the day on which it was laid and neither House has resolved that the instrument be not made. The Commission makes the following Order in exercise of the power conferred by section 59(1) of the Act. Citation and commencement 1. —(1) This Order may be cited as the Test Valley (Electoral Changes) Order 2018. (2) This article and article 2 come into force on the day after the day on which this Order is made. (3) The remainder of this Order comes into force— (a) for the purpose of proceedings preliminary, or relating, to the election of councillors, on the day after the day on which it is made; (b) for all other purposes, on the ordinary day of election of councillors in England and Wales( c) in 2019.
    [Show full text]
  • Wonston Wonston with Sutton Scotney
    Wonston Wonston with Sutton Scotney 1.0 PARISH Wonston (now includes Hunton and Stoke Charity) 2.0 HUNDRED Buddlesgate 3.0 NGR 447700 139550 4.0 GEOLOGY Upper Chalk; Alluvium 5.0 SITE CONTEXT (Map 2) Wonston CP now includes Hunton (formerly a tithing of Crawley) and Stoke Charity. On the other hand, a strip of land across the south of the parish has been hived-off as the new parish of South Wonston. For this reason the south boundary of Wonston parish has been partly determined by some relatively modern features such as post- medieval enclosure fences and a dismantled railway line. The old east boundaries of Stoke Charity and Hunton now perform the same function for Wonston. To the south- west, the Roman road to Salisbury forms part of the parish limit whilst the west and north boundaries seem to be based upon a combination of marker points including natural features, post-medieval fields and traditional land divisions. The river Dever, a tributary of the Test, cuts across the parish from east to west. This watercourse has attracted a number of settlements. On the north bank are the former manors of Norton and Cranbourne where there are watercress beds. Here too, is the Crawley tithing of Hunton. South of the river (west to east) are Sutton Scotney, Wonston and Stoke Charity. The settlement of Wonston is just above the flood plain of the Dever at c. 63m AOD. It is reached from the west via a minor road from Sutton Scotney. This road also passes through Stoke Charity (east) and on into the neighbouring parish of Micheldever.
    [Show full text]
  • New Forest Wetland Management Plan 2006
    LIFE 02 NAT/UK/8544 New Forest Wetland Management Plan Plate 1 Dry stream bed of Fletchers Brook - August 2005 3.18 LIFE 02 NAT/UK/8544 New Forest Wetland Management Plan Table 3-8: Flow Statistics Lymington Hampshire Avon (R. Lymington Tributaries at Brockenhurst) (Dockens Water) Catchment Size 98.9 km2 17.15 km2 Permeability Mixed permeability Low to Mixed permeability Mean Annual rainfall (1961-90) 854 mm 831 mm Elevation 8.4-117.7m - Mean flow 1.06 m3s-1 0.26 m3s-1 95% exceedance (Q95) 0.052 m3s-1 0.047 m3s-1 10% exceedance (Q10) 2.816 m3s-1 0.592 m3s-1 Source: Centre of Ecology & Hydrology 3.4.5 Flow patterns Flow patterns are characterised by glides (slow flowing water), riffles (medium flowing water) and runs (fast flowing water). Life 3 studies in the Blackwater and Highland Water sub-catchments found that glides tend be to the most common form of flow followed by riffles and runs. Pools (still water) are noticeably rare in modified reaches being replaced by glides or runs. Pools where they occur are usually found at meander bends apices. Cascades and small water falls also occur at the faces of debris dams. Channelisation tends to affect the flow type in that it reduces the number of pools. Dominant flow types for the Highland Water and Black Water are shown in Figure 10. It is probable that a similar pattern would be found in the other river catchments. 3.4.6 Bank & bed material Bank material is made up of clay, fines, sand and gravel.
    [Show full text]