DOCSLIB.ORG

River Habitat Surveys, 1994 Provision of Map Information & Initial Analysis

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
River Habitat Surveys, 1994 Provision of Map Information & Initial Analysis QL/T)10 5- 3 r I APR IL. Institute of Freshwater 1: `:314e R L/11053r1(5)/2 0 Ecology River Habitat Surveys, 1994 Provision of map information & initial analysis F H Dawson PhD MIWEM CBiol FIBiol J Blackburn BSc N J Grieve BSc I Gunn BSc MSc P Henville L Nolan BSc MSc S M Smith Natural Environment Research Council á INSTITUTEOF FRESHWATERECOLOGY River Laboratory,East Stoke, Wareham, Dorset BH20 6BB Tel: 0929 462314 Fax: 0929 462180 River Habitat Surveys, 1994 - provisionof map information& initial analysis F.H. Dawson PhD MIWEM CBiol FIBiol J BlackburnBSc N J Grieve BSc I Gunn BSc MSc P Henville L Nolan BSc MSc S.M. Smith Project leader: F.H. Dawson Report date: April 1994 (for 1993/4 year) Report to: National River Authority - HQ Contract No: under FBA Technical Services Agreement (letterof 14 March 1994, Paul Raven)) IFE Report Ref: RL/11053r1(5)/2 TFS ProjectNo: TFS/11053 In accordancewith our normal practice, this report is for the use only of the party to whom it is addressed, and no responsibilityis accepted to any third party for the whole or any part of its contents. Neither the whole nor any part of this report or any referencethereto may be included in any published document,circular or statement,nor published or referredto in any way without our written approval of the form and context in which it may appear. The Instituteof FreshwaterEcology is part of the Terrestrial and FreshwaterSciences Directorate of the Natural Environment Research Council. á 1 INTRODUCTION This report embodiesdataon geology,altitude,watercoursegradient,distance from source, sinuosity,togetherwith 1985 River Quality class and flow size class for 1523 sites (initially1510)selectedby NRA for River Habitat Survey to be undertakenduring May & June 1994 and delivered in this report and on computer disc; this positional data as National Grid References (NGRs) includedsite code, NRA region, name of watercourse, hydrologicalcatchment number and catchmentname, was supplied on computer disc. Data validation will also be undertakenby IFE later in 1994 when the full GIS systems are fully functional. Some of these data have been analysed including as requested a distribution classificationto show the ranges of the above parametersand includingsize classes, mean annual flow (MAF) classes and the geographicdistributionof altitude. 2 METHODOLOGY The data required and the methodologyof collectionwith its constraintsare as follows: 2.1 Geology solid and drift where available: solid geology visually extracted using transparent grid for 1 km square from Instituteof Geological Sciences (IGS) Geological Map of United Kingdom (North& South sections)3rd Edition 1979 1:625 000 and recordedusing IGS classificationnumbers (Figure 1); drift, as above, from 1GS GeologicalSurvey Ten mile (North & South sections)map 1:625 000 First Edition (Quaternary1977) and recorded using IGS classificationnumbers (Figure 2); 9 .2 Altitude in metres for centre of watercoursereach in 1 km square from 1:50 000 scale maps 9 .3 gradient or slope of stream (ratio, unitless), calculated from differencein height of contours normally about 1 km apart on 1:50 000 scale maps but not more than 2.5 km, unless either very flat eg estuarieswhen an arbitrary 0.0001 was used or an obvious feature eg waterfallwas marked; 2.4 distanceof site, in km, from source of watercoursemeasuredusing map wheel from blue line on 1:50 000 scale map unless a very large river over 30-50 km in length and on more than two maps when the River Quality 1985 1:250 000 scale map was measured; 2.5 Sinuosity, as defined by RHS Phase 2 methodology, estimated for 1-2.5 km centredon middle of river reach in 1 km square (Figure 3). In addition: 2.6 River Quality 1985 from Regional Water Authority maps were recorded using standardclasses (1A,1B,2,3,4). 2.7 River mean flow range was verified for classes 1-10 with 0 = not available (coincidentlywith 2.6 above). 1 Figure 1. Solid geology classification from IGS 3rd edition 1979. SEDIMENTARY FORMATIONS FT-12:14 GraITI NEOGENE 110 Louyh Nragb Clors '01100Cene PALAEOGENE 107 - 9 Inler•lads beds 'ENene 106 Lipper Chalk }CRETACEOUS 105 Creensand Ilmortendge Clay. CalOalan Oilord Clay & Olelldi di Arcs HUnpin- Combrash Middle rn Grear & lnferlor Dohle mcladidg &Palluarme Sedes a (f) JURASSIC '0 Upper bas 0 Middle Liss ,_ower Lowe, bas MIldsrOPes MC11/0") -Weop, S rman & irrasny sandsloned unrdeld-renIddra. !,/,G, alit, S. Eros,- Revs Red Permean MUri5(17,?, g Ls*, t.,LCIF & St Syr, d'd.col PERMIAN SandislonR TRIASSIC Magnesmn bmrslone (Pernd,n) Pennoon basal bsoccms iandusons & maiscsines Westphoesn 5Slopdardon. usithdded Batren Red idholsgi (Er n ("Coal Arldndresd) 1. Silesian Nanwrian r Mylistone 0n1 SoNds I CARBONIFEROUS loWriaisias ( Corldrideroots Lod.drond Sens:. :Ths,rd Ran 78 Upper Old Red Sands ran e 1.i> 77 Mtddle Old Red Sandstone DEVONIAN F.; 7 5 I Lower Old Red Sandstone including Dovrsomon 74 Ludlow 73 Wealack SILURIAN 310Z03V1Vd 72 Llondovery 70.1 Ashgtl( & Car adoc (includes small nliers of Arenog-Llandedo on Scotland) 68 Llanwrn & Aremy ORDOVICIAN 67 Owness tonesrone (panty ComiNsas) 63 Seepulde Grit & Fucoed Beds CAMBRIAN 62 Pfpc.Rock & Basal CoOrraere Sandstone dfld Ind LEORRIDONIAN 2 Fizure 1 (cont). Solid geology classification from 1GS 3rd edition 1979. IGNEOUS ROCKS Balt BorldIrscifirolol 58 Rhcolile. ern:Byte & albed loss Tertiary Basalt & sprlde 56 Basalt Permian lereshaled. marnly ha, /Br Ahem's; drys& adlwd VareS ( carbw,em. all audrns; snrPrrIII EXTRUSIVE Rhyoble. erarlstle & albed Irlscs Diayoman Rir Old Red Sandstone Basalt & spthle I. Bur re 'Twirl, lava Andras', IBIS Andesolsc lava & lull. rII rr-r d Basroll. ?kir( ei & seLstvsfs Agglonserars /Is vfr Rhyolrla. trashy:B. (chola el 'I alls & albed Lissa PosphyrrIrs & allred Bas u a Ba,Baronsla & rs,Bes stranoorlBrv & allred BOPS INTRUSIVE [horde & allred lihrer me chafe &PCs 32 Gabbro & albed tsjsvs sr• Ullrabasse rock Areas ol rifiense grarsl 3 Fioire 1 (cont.). Solid geoloiicvclassification from IGS 3rd edition 1979. METAMORPHIC ROCKS C71-< 2,1 m Z71 cgrated gurgle, syenbr & Abed fl.nes tr<C 0 73- Ln prdror homblendersclegr Abet, upga I >2= -c Oz ergenlree —,0> z cn o brgeb ((IP!), Ca c - acts .sltUisiier Oahu-ban) phyllst nwrg.rschost grbr. :gale & phirlde (Urger L) Ir. 0 bbSb rue.? ;Urn: ; e grr int e Sorbbrier bed & ceroglomerale gp ge tarsi, lc NI commonlk Isorshiendor argon Bed, (Unger Urrgarrub) burfr—urigb HP; haroblynrisc (burn Erb, ,f Un • Haled 5 Of Shyllond & Semuri rug, Glands, gnbus ilsrarschub semis relit If SCI3,1 o sache feldipar yr arrribre Lguirffereglrairrl Grande Illi911)2I sly co ?ssose gram 95,155:e 'Mole fen-nes/are & Laub I IrCA billrabassc rob( NVISIM31 Agurbboute darble Melasechmenls Unddlerenlogled goes.. XrldWOO V CLLSSI 11 cat frL1n 11.2S 1 <-1 odilArw P377 . l• 625 000 QUATERNARY MAP OE THE LINET ED MNODOM. ii\IDEX AND EXPLANANON CLAbt-alf-IGATION OF faFF'FiSiThtt { G ff arr. :':FaFACE DEPOSFi itf',/aftpHF.L.HD AHD GitAVELI incfurlt Jutataia, aa.F.alaft) tab, oa. !!-.0 LaytFalo, taarGi R.Lain Fon, RR'Ci (3L0JP11. !z1;3hcr Uldur ore ni sr-irne ;Jr..-i salf trralA tatsti pp-trthatt, tat " Hit:F.-tat Claylat iaaten rfact,fassdifai P.Rur 11.0 ci D.tt.cf rati Cil C Al LI jy.I.HM and liar:rani: (Caw:Hama Ffituafmt pcLiEn moiys:s SJ!..)S ARD SANDS inccrport-te oil dr:it-Fps:Ls. :total Ecce.r.L ;Jatl l'orlstortaaffs am; laratatte tta;FLI LI cFli•ar; of 'The Va,l4t et Frcafr. ELOV,If trAND maltiffn; prenent-daft tar.d cattra. dune s:ir.tiff. aric ra00F2a; deporatr. ffarch .Ftt !Jae Frilutlitty Haa f3F5ric1 Figure 3, sinuosityas defined by RHS Phase 2 methodology (as fax from NRA). s twoosai PLw-CoM 1-\y—mc A Sk.; %u'J N-21q.skfl ® 6 I t; III sE.s.i c:n I n Pnqi Eg) in Engl IA.L s IP:E50 RIVER QUAL] Y 1985 ANGLIAN \NATE AUTHORITY Snn!e 1 :250,000 RIVER AND CANAL DUALITY rAVER FLO• RANGb o heti: a_urtui 4.1p icc:TDARY DUALITY ;N[JEX TO MAPS IN RIVER / ESTUARY BOSNEsERY Table 1.Listing of parametersderivedfrom maps and added to NRA-selected site-list from NRA-North West oncomputer disc (asreturned to NRA April)21994. The data listing is in the followingorder: Key: No. Parameter Status Code 1. Site number received No. 9 . Region code received Region Name of watercourse received Name Hydrologicalcatchmentnumber received Hyd.no. Name of River catchment received Rivername National grid Reference(Easting/Northinu) (lettersconvertedto numbers,Figure 5)converted EN NGR 4 figure referencefor 1 km squaresreceived 4fig S. River DischargeClass received/verified Q Geology- solid added sld - drift/quaternary added dft Altitude added Alt Distance from source added dist Gradient slope added grad Sinousity added s River Quality 1985 added RQ 8 Figure 5. National EftidReferencein alphabetic& numeric values. \dil HX HP69 NA ND 09 1J 29 39 HY/ HT HU 58. 68 NF clj ‹, N NK 08 :' 38 48 HY . HZ 57 67 A va, NL 'NN NO 055 9too 0 - 07 27 -t-ii, o mlomeireswo_, miles 4 T NU S 26 36 46 14 . IlltNX NY F 35 • 03 r 23 'SD SE TA 4 44 54 M N24 0 - 12 22 32 J SK T TG QR 33 43 3 63 S 0111 T 21 31 la SO SP TL T SM 22 32 42 52 X12 4 * .1 4 20 A SR SS 54 SU TQ 11 • 31 41 51 WA SV SV/ SX SY SZ TV 00 v 30 40 50 9 3 RESULTS 3.1 General Errors in locationof squareswith watercoursesincludingincorrect location and watercourses not visible on 1:50 000 scale map were corrected in consultationwith NRA and the results are presented here (Appendix 1), on overheads for RHS 94 course and on computer disc sent to NRA North West.
Load more

Recommended publications
  • Driffield EASTFIELD
    A614 www.eastriding.gov.uk AD RO TMENT LANE ALLO Driffield EASTFIELD SCARBOR A614 SPELLO AD RO ON THE TOWARDS NAFFERTON WGAT OUGH RO AV - follow for rides 1, 4 and 5 Cycle Map TH ST BRIDLINGT GIBSON ST E NOR NUE PARK CLOSE E WEST GA AD AD YORK RO MANORFIELD EA TE S MIDDLE ST N T GA EAST VICT AD TE RO B1249 RIDING AVE ORIA N NEW WEST GA LEISURE AD ST RO EAST GA DRIFFIELD AD Five cycle routes in and NEWLAND TE TE WANSFORDMANORFIELD RO RO around Driffield Ride 3 – CHALLENGING EXCHANGE S MILL ST T Some long climbs, which are worth it for the AVE AD DUNN’S LN beautiful views from the top of the Wolds. KINGS MILL RO QUEEN S AD AD RO CUSTOMER OW An excellent day ride for confident family groups. KING ST SESERRVVICESI CENTRE MEAD 32 miles / 52km, or 4 hours riding time. /LIB/LIBRARY/WC ALBION ST KEY MIDDLE ST S BRA BRA Leave Driffield along NCN route 1 travelling south along BRA Skerne Road. After approximately 3.5 miles, turn right at SECURE CYCLE PARKING B1 CKEN E CK CKEN LOCKWOOD ST 2 49 the crossroads towards Hutton. When you reach the village ST JOHN’S RO Welcome to Driffield! CYCLE SHON P RIVER HEAD continue past the phone box and turn right towards Southburn. R RO O RI Pass over the junction with the A164 and at the T junction ADA Driffield is a charming market town situated to the east of the Yorkshire Wolds approximately FREE LONG STAY CAR PARKING VERSID TOWARDS SKERNE 12 miles inland from the North Sea coast.
    [Show full text]
  • Environment Agency South West Region
    ENVIRONMENT AGENCY SOUTH WEST REGION 1997 ANNUAL HYDROMETRIC REPORT Environment Agency Manley House, Kestrel Way Sowton Industrial Estate Exeter EX2 7LQ Tel 01392 444000 Fax 01392 444238 GTN 7-24-X 1000 Foreword The 1997 Hydrometric Report is the third document of its kind to be produced since the formation of the Environment Agency (South West Region) from the National Rivers Authority, Her Majesty Inspectorate of Pollution and Waste Regulation Authorities. The document is the fourth in a series of reports produced on an annua! basis when all available data for the year has been archived. The principal purpose of the report is to increase the awareness of the hydrometry within the South West Region through listing the current and historic hydrometric networks, key hydrometric staff contacts, what data is available and the reporting options available to users. If you have any comments regarding the content or format of this report then please direct these to the Regional Hydrometric Section at Exeter. A questionnaire is attached to collate your views on the annual hydrometric report. Your time in filling in the questionnaire is appreciated. ENVIRONMENT AGENCY Contents Page number 1.1 Introduction.............................. .................................................... ........-................1 1.2 Hydrometric staff contacts.................................................................................. 2 1.3 South West Region hydrometric network overview......................................3 2.1 Hydrological summary: overview
    [Show full text]
  • The Magazine of Memphis University School • August 2009
    The Magazine of Memphis University School • August 2009 From the Editor Graduation 2009 has come and gone, and we congratulate our seniors as they head to colleges throughout the United States. They’ve left big shoes to fill as campus leaders, and they now join a distinguished ME M PHIS UNIVERSITY SCHOOL alumni group. Founded 1893 This issue features the 11 alumni who work at MISSION STATE M ENT MUS as faculty or staff members. We also highlight Memphis University School is a college-preparatory school dedicated to this year’s Latin, fencing, tennis, and track teams who academic excellence and the development brought home state championships this spring. We’ve of well-rounded young men of strong moral character, consistent with the included information about the MUS endowment and a list of books the English school’s Christian tradition. faculty recommend for your reading pleasure. HEAD M ASTER We hope you saw the spring musical, Little Shop of Horrors. Director Tim Ellis L. Haguewood Greer had one of the original man-eating plants created for Broadway on stage in BOARD OF TR U STEES Hyde Chapel. Loyal Murphy ’86 did a fabulous job as the hungry plant. That Robert E. Loeb ’73, Chairman man can really sing! D. Stephen Morrow ’71, Vice Chairman Richard L. Fisher ’72, Treasurer Our IT staff, Billy Smith, Jonathan Saunders, and Jeremy Cupp, and art W. Thomas Hutton ’61, Secretary teacher Grant Burke have been busy redesigning our Web site. They created Ben C. Adams ’74 R. Louis Adams ’70 a password-protected alumni portal that will offer you exclusive access to job Russell E.
    [Show full text]
  • Bristol, Avon Valleys and Ridges (NCA 118)
    NELMS target statement for Bristol, Avon Valleys and Ridges (NCA 118) Your application is scored and a decision made on the points awarded. Both top priorities and lower priorities score points but you should select at least one top priority. Scoring is carried out by... Choosing priorities To apply you should choose at least one of the top priorities, and you can choose lower priorities - this may help with your application. Top priorities Priority group Priority type Biodiversity Priority habitats Priority species Water Water quality Flood and coastal risk management Historic environment Designated historic and archaeological features Undesignated historic and archaeological features of high significance Woodland priorities Woodland management Woodland planting Landscape Climate Change Multiple environmental benefits Lower priorities Priority group Priority type Lower priorities Water quality Archaeological and historic features Woodland Biodiversity - top priorities Priority habitats You should carry out land management practices and capital works that maintains, restores and creates priority habitats. Maintain priority habitat such as: • Coastal and floodplain grazing marsh • Lowland meadows • Lowland calcareous grassland Reedbeds Traditional orchard • Lowland dry acid grassland Wood Pasture and Parkland Restore priority habitats (especially proposals which make existing sites bigger or help join up habitat networks) such as: ● Coastal and floodplain grazing marsh • Lowland meadows • Lowland calcareous grassland Reedbeds Traditional
    [Show full text]
  • Roman Roads in Britain
    THE LIBRARY OF THE UNIVERSITY OF CALIFORNIA LOS ANGELES !' m ... 0'<.;v.' •cv^ '. V'- / / ^ .^ /- \^ ; EARLY BRITAIN. ROMAN ROADS IN BRITAIN BY THOMAS CODRINGTON M. INST. C.E., F.G.S. WITH LARGE CHART OF THE ROMAN ROADS, AND SMALL MAPS LY THE TEXT SOCIETY FOR PROMOTING CHRISTIAN KNOWLEDGE, LONDON: NORTHUMBERLAND AVENUE, W.C. 43, QUEEN VICTORIA STREET, E.G. ErIGHTON ; 129, NORTH STREET. 1903 PUBLISHED UNDEK THE DIRECTION OF THE GENERAL LITERATURE COMAHTTEE. DA CsHr PREFACE The following attempt to describe the Roman roads of Britain originated in observations made in all parts of the country as opportunities presented themselves to me from time to time. On turning to other sources of information, the curious fact appeared that for a century past the literature of the subject has been widely influenced by the spurious Itinerary attributed to Richard of Ciren- cester. Though that was long ago shown to be a forgery, statements derived from it, and suppositions founded upon them, are continually repeated, casting suspicion sometimes undeserved on accounts which prove to be otherwise accurate. A wide publicity, and some semblance of authority, have been given to imaginary roads and stations by the new Ordnance maps. Those who early in the last century, under the influence of the new Itinerary, traced the Roman roads, unfortunately left but scanty accounts of the remains which came under their notice, many of which have since been destroyed or covered up in the making of modern roads ; and with the evidence now avail- able few Roman roads can be traced continuously. The gaps can often be filled with reasonable cer- tainty, but more often the precise course is doubtful, and the entire course of some roads connecting known stations of the Itinerary of Antonine can IV PREFACE only be guessed at.
    [Show full text]
  • Local Flood Rep News Spring 2019
    October 2018 Local Flood Rep ©Image Lewis Clarke Spring 2019 News Locals manage flood risk in Chew Magna with personalised river level gauge Jim Collings, Flood Authority Manager, says “We can't stop the river from flooding, but this technology gives people the information to help protect their homes. We need more local communities to put someone forward as their Flood Representative who will be able to identify local flooding issue to us.” The Winford Brook responds rapidly to rainfall. Having up to the minute information on river levels is vital to preparing for flooding. Around 70 homes in Chew Magna are information on the water level of the at a high risk of flooding from the Brook. Winford Brook and the River Chew. This information enables the community The community has developed a to respond directly to immediate river nationally recognised community flood levels and trigger different actions within plan, which includes a network of Flood the flood plan. Wardens managing different ‘zones’ within the village. One advantage of the new gauge is that rather than relying on visual Installing the gauge, February 2018. In order to aid the community’s observations of the river level, which preparedness, in 2018 the Council’s are only practical during daylight hours, Drainage and Flooding team installed a text messages and emails are sent to be-spoke river level gauge on the The Council is keen to support Flood Wardens whenever a particular Winford Brook. communities that can help to manage river level is reached. This means that if their flood risk.
    [Show full text]
  • River Hull Integrated Catchment Strategy Strategy Document
    River Hull Advisory Board River Hull Integrated Catchment Strategy April 2015 Strategy Document Draft report This Page is intentionally left blank 2 Inner Leaf TITLE PAGE 3 This page is intentionally left blank 4 Contents 1 This Document.............................................................................................................................17 2 Executive Summary ..............................................................................................................18 3 Introduction and background to the strategy ..................................20 3.1 Project Summary .................................................................................................................................... 20 3.2 Strategy Vision ........................................................................................................................................ 20 3.2.1 Links to other policies and strategies .......................................................................................21 3.3 Background .............................................................................................................................................. 22 3.3.1 Location ........................................................................................................................................... 22 3.3.2 Key characteristics and issues of the River Hull catchment ...............................................22 3.3.3 EA Draft River Hull Flood Risk Management Strategy .........................................................26
    [Show full text]
  • FINAL MAP FRONT.Indd 1 13/02/2014 10:43:14
    Coniston Bowness-on- Morton-on-Swale Windermere Coniston Water Kendal Lake R Windermere I V N E E Maunby R V Kirkby E Sedgwick Misperton A C L B C D E F R Newby Bridge G H R Thirsk COSTA A VE Crooklands K RI L BECK E A N COD A Yedingham Ryton C BECK R Topcliffe IV R E Ulverston 14m 8L R R R E IV Dalton YE T E S R S ULVERSTON A 8 W C A Malton CANAL Tewitfield Ripon LE N R I T Norton A P 1 N O L E N Helperby W C 17m 6L R Carnforth 6h Navigation works E D unfinished Bolton-le-Sands Myton-on-Swale R Kirkham Sheriff E 12m 0L 4h Boroughbridge V Hutton I R R IV Howsham E S Navigable waterway: broad, narrow R Linton S 11½m 8L U O R F DRIF Waterway under restoration Lancaster E Strensall FIEL 11m 0L 2½h R D Driffield NA 2 2 E V’N Derelict waterway 5m 0L V 1½h I Earswick 5m 4L Restored as Gargrave Skelton R Brigham Unimproved river historically used for navigation, or drain R single lock 2 4 IV Right of Glasson E navigation Stamford Bridge W Proposed new waterway Galgate L R e 6 E O disputed st B North L Bank Newton ED U eck Frodingham 6 A Skipton S S 10½m 1L Navigable lock; site of derelict lock (where known) E N & 3h 16m 15L 2 11m 2L 3h C L 8h IV Fulford Navigable tunnel; site of derelict tunnel A ER Aik S Greenberfield e 8m 0L Silsden P Beck Thrupp Flight of locks; inclined plane or boat lift; fixed sluice or weir T York POCKLINGTON 3 O Lockington 2½h E OL 10m 1L 3h Sutton CANAL R Pocklington Barnoldswick CA Leven Miles, locks and cruising hours between markers Garstang N C Arram 7m 8L A Tadcaster Navigation Naburn 3 LEVEN C On rivers: 4mph,
    [Show full text]
  • The Phosphorus Content of Fluvial Sediment in Rural and Industrialized River Basins
    Water Research 36 (2002) 685–701 The phosphorus content of fluvial sediment in rural and industrialized river basins Philip N. Owens*, Desmond E. Walling Department of Geography, School of Geography & Archaeology, University of Exeter, Amory Building, Rennes Drive, Exeter, Devon EX4 4RJ, UK Received 3 August 2000; received in revised form18 April 2001; accepted 9 May 2001 Abstract The phosphorus content of fluvial sediment (suspended sediment and the o63 mmfraction of floodplain and channel bed sediment) has been examined in contrasting rural (moorland and agricultural) and industrialized catchments in Yorkshire, UK. The River Swale drains a rural catchment with no major urban and industrial areas, and the total phosphorus (TP) content of fluvial sediment is generally within the range 500–1500 mggÀ1. There is little evidence of any major downstream increase in TP content. In contrast, fluvial sediment from the industrialized catchments of the Rivers Aire and Calder exhibits both higher levels of TP content and marked downstream increases, with values of TP content ranging from o2000 mggÀ1 in headwater areas upstreamof the mainurban and industrial areas, to values >7000 mggÀ1 at downstreamsites. These elevated levels reflect P inputs frompoint sources, such as sewage treatment works (STWs) and combined sewer overflows. The influence of STWs is further demonstrated by the downstream increase in the inorganic P/organic P ratio from o2 in the headwaters to >4 in the lower reaches. Comparison of the P content of suspended sediment with that of the o63 mmfraction of potential source materialssuggests that topsoil from upland moorland/pasture and from cultivated areas, and channel bank material are likely to be the main sources of particulate P (PP) in the River Swale and in the headwaters of the Rivers Aire and Calder.
    [Show full text]
  • Part 1 Rea Ch Classifica Tion
    RIVER QUALITY SURVEY NATIONAL RIVERS AUTHORITY NORTHUMBRIA & YORKSHIRE REGION GQA ASSESSMENT 1994 PART 1 REA CH CLASSIFICA TION FRESHWATER RIVERS AND CANALS VERSION 1: AUGUST 1995 GQA ASSESSMENT 1994 \ NORTHUMBRIA & YORKSHIRE REGION To allow the development of a National method of evaluating water quality, the rivers in all the NRA regions of England and Wales have been divided into reaches, which are numbered using a coding system based on the hydrological reference for each river basin. Each classified reach then has a chemistry sample point assigned to it and these sample points are regularly monitored for Biochemical Oxygen Demand (BOD), Dissolved oxygen (DO) and Total Ammonia. The summary statistics calculated from the results of this sampling are sent to a National Centre where the GQA Grades are calculated. A National report is produced and each region can then produce more detailed reports on the quality of their own rivers. For Northumbria and Yorkshire Region, this Regional Report has been divided into two parts. PARTI: REACH CLASSIFICATION This report contains a listing of the river reaches within the region, with their start and finish grid reference, approximate length, and the 1990 and 1994 GQA class for each reach. The reference code of the chemistry sample point used to classify the reach is also included. A sample point may classify several reaches if there are no major discharges or tributaries dividing those reaches. The sample point used to classify a reach may change and the classification is therefore calculated using the summary statistics for each sample point that has been used over the past three years.
    [Show full text]
  • NRFA Peak Flow Dataset
    National River Flow Archive NERC Centre for Ecology & Hydrology WINFAP-FEH DATA FILES VERSION 6 Note on changes from v5 VERSION: 1.0 STATUS: FINAL DATE: FEBRUARY 2018 AUTHOR: KATIE MUCHAN, CATH SEFTON, STEVE TURNER, OLIVER SWAIN DOCUMENT VERSION CONTROL Version Date Author Description 1.0 FEBRUARY KATIE MUCHAN, CATH SEFTON, STEVE 2018 TURNER, OLIVER SWAIN TABLE OF CONTENTS 1 INTRODUCTION ............................................................................................................................................................. 1 2 NETWORK CHANGES ...................................................................................................................................................... 2 2.1 REMOVAL OF GAUGING STATIONS......................................................................................................................................... 2 2.2 ADDITION OF GAUGING STATIONS......................................................................................................................................... 3 2.3 CLOSURE OF GAUGING STATIONS .......................................................................................................................................... 3 2.4 COMBINED PEAK FLOW TIME SERIES FROM MULTIPLE STATIONS ................................................................................................ 3 2.5 COMPONENT STATIONS .....................................................................................................................................................
    [Show full text]
  • Advisory Visit Cound Brook, Shropshire June 2020
    Advisory Visit Cound Brook, Shropshire June 2020 Author: Tim Jacklin ([email protected], tel. 07876 525457) 1.0 Introduction This report is the output of a site visit undertaken by Tim Jacklin of the Wild Trout Trust to the Cound Brook at Eaton Mascott Estate, Shropshire, on 10th June 2020. Comments in this report are based on observations during the site visit and discussions with the landowner. Normal convention is applied with respect to bank identification, i.e. left bank (LB) or right bank (RB) whilst looking downstream. Upstream and downstream references are often abbreviated to u/s and d/s, respectively, for convenience. The Ordnance Survey National Grid Reference system is used for identifying specific locations. 2.0 Catchment / Fishery Overview The section of the Cound Brook visited is located approximately 4km upstream of its confluence with the River Severn between Atcham and Cressage, south of Shrewsbury. A section of both the Cound Brook and its tributary the Row Brook were inspected upstream of their confluence. The geology of the area is sedimentary bedrock (Salop Formation – mudstone and sandstone, formed approximately 272 to 310 million years ago in the Permian and Carboniferous Periods1), with superficial deposits of river alluvium and glacial till. Soils in the vicinity are sandy and easily eroded. Combined with potato and maize cultivation, this tends to lead to excessive levels of fine sediment reaching the watercourses. In order to meet the requirements of the Water Framework Directive, the Environment Agency monitor the quality of watercourses using a number of measured parameters including plant, algae, invertebrate and fish populations, along with physical and chemical measures.
    [Show full text]