569 11 SD01 Drought Plan Template

Total Page:16

File Type:pdf, Size:1020Kb

569 11 SD01 Drought Plan Template Yorkshire and North East Region Drought Plan January 2012 Title Yorkshire and North East Region Drought Plan No. 569_11_SD01 Status: Version 1 Issue Date: 30/01/2012 Page 1 of 135 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. Published by: Environment Agency Horizon House, Deanery Road Bristol BS1 5AH Tel: 0117 934 4000 Email: enquiries@environment- agency.gov.uk www.environment-agency.gov.uk Further copies of this report are available © Environment Agency from our publications catalogue: http://publications.environment- All rights reserved. This document may be agency.gov.uk or our National Customer reproduced with prior permission of Contact Centre: T: 08708 506506 the Environment Agency. E: [email protected]. Title Yorkshire and North East Region Drought Plan No. 569_11_SD01 Status: Version 1 Issue Date: 30/01/2012 Page 2 of 135 Yorkshire & North East Region Drought Plan - Executive Summary What is the drought plan? As a regulator, we carry out a range of activities to protect the environment and implement the priorities of central government. We have a duty to secure the proper use of water resources in England and Wales. We monitor water in the environment, and issue abstraction licences to regulate who can take water from the environment. We have produced this drought plan to explain how the Yorkshire and North East Region will react during a drought to protect public water supplies and the environment. Detailed information on droughts and responses to frequently asked questions can be found via our website: http://www.environment- agency.gov.uk/homeandleisure/drought/31791.aspx Why do we write it? Droughts do not happen on a regular basis, the last major drought being in this Region in 1995/6, therefore it is important that we know how to react in order to protect public water supplies and the environment. Drought plans are essential for managing water resources and help us make the right decisions at the right time. We rewrite our plans roughly every three years - around the same time as water companies develop their statutory drought plans. We do this to ensure the plans align and that lessons from any intervening dry periods have been incorporated into both plans. This single document replaces all previous Environment Agency drought plans for our Region and should be considered alongside the statutory plans of our local water companies. What does it contain? The plan contains background information on what we do to manage water resources. It also contains actions and information specific only to the drought plan. The plan contains: • an outline of how we will manage water resources during a drought and define our role and responsibilities; • details of the structures and teams involved in managing the drought; • the steps we will take to respond to the competing interests of the environment, the need for public water supply and other abstractors; • what additional environmental monitoring we will carry out that is specific to drought; • a framework for liaison with water companies, abstractors and others interested in water resources; • a list of triggers, decisions and actions we will carry out as a drought escalates. Title Yorkshire and North East Region Drought Plan No. 569_11_SD01 Status: Version 1 Issue Date: 30/01/2012 Page 3 of 135 The plan also details the different stages of drought management. Droughts tend not to be sudden events therefore we escalate activity and use a weight of evidence approach before deciding which drought status we are in. Details on the different statuses can be found in Section 3 of the plan. It is also important to recognise that this plan affords us some flexibility. Each drought and the impact on different sectors and the environment will be unique, and our response will have to vary dependent on the prevailing conditions. Who’s involved? The drought plan describes the teams we will establish in a drought situation. We will also work with colleagues in other regions and in National teams. To manage a drought effectively, we will need to work with abstractors (including those for agriculture and public water supply), British Waterways, Natural England and a range of interested parties. We have actions associated with triggers and a communications plan within our drought plan which help us to manage a drought and inform the right people at the right time. The triggers can be found in Section 3 and the communications plan can be found in Appendix C. Which are the most important bits? The plan contains detail of the activities we will take relevant to managing drought. There are a number of sections which relate to internal processes which are useful for Environment Agency staff when managing a drought but of less relevance to the general reader. The main component of the drought plan is the triggers and associated actions. Triggers are presented in Section 3. Reviewing this section will give you a good idea of how we will escalate our activities during a drought and what actions we would take. This is the main focus of the drought plan and would be relied upon to direct our activity as a period of drier weather escalates towards drought. Changes to the plan We asked for comments when a draft of this drought plan was made available for public consultation during 2011. We have amended parts of our plan in light of comments received. Where can I find the plan? The drought plan is available to the public via the Environment Agency website. There is a designated drought section at the following location: http://www.environment-agency.gov.uk/homeandleisure/drought/default.aspx. If you have suggestions about how the Environment Agency can improve engagement with you during a drought, then please contact our Regional drought coordinator via email at: [email protected] Title Yorkshire and North East Region Drought Plan No. 569_11_SD01 Status: Version 1 Issue Date: 30/01/2012 Page 4 of 135 Contents Yorkshire & North East Region Drought Plan - Executive Summary .......................... 3 Contents ..................................................................................................................... 5 Summary .................................................................................................................... 8 1. Introduction........................................................................................................ 10 1.1. Purpose ......................................................................................................... 10 1.2. Definition of drought....................................................................................... 11 1.3. Drought plans and responsibilities ................................................................. 11 1.4. Background information on Yorkshire and North East Region....................... 11 1.4.1. Water resources ..................................................................................... 12 1.4.2. Regulation of water resources ................................................................ 16 1.4.3. Exempt Areas ......................................................................................... 17 1.4.4. Environmental issues.............................................................................. 18 1.4.5. Water companies.................................................................................... 19 1.4.6. Industrial use of water............................................................................. 22 1.4.7. Agriculture .............................................................................................. 22 1.4.8. Power generation.................................................................................... 23 1.4.9. Domestic use.......................................................................................... 23 1.4.10. Angling.................................................................................................... 23 1.4.11. Recreation .............................................................................................. 24 1.4.12. Water efficiency ...................................................................................... 25 1.4.13. Other plans ............................................................................................. 25 1.4.14. Past droughts.......................................................................................... 26 1.4.15. Strategic Environmental Assessment (SEA) and Habitats Directive Assessments......................................................................................................... 27 2. Drought management in Yorkshire and North East Region............................... 28 2.1. Drought teams within the Region................................................................... 28 2.2. Individual
Recommended publications
  • Malhamdale and Southern/South Western Dales Fringes
    Malhamdale and Southern/South Western Dales Fringes + Physical Influences Malhamdale The landscape of Malhamdale is dominated by the influence of limestone, and includes some of the most spectacular examples of this type of scenery within the Yorkshire Dales National Park and within the United Kingdom as a whole. Great Scar limestone dominates the scenery around Malham, attaining a thickness of over 200m. It was formed in the Carboniferous period, some 330 million years ago, by the slow deposition of shell debris and chemical precipitates on the floor of a shallow tropical sea. The presence of faultlines creates dramatic variations in the scenery. South of Malham Tarn is the North Craven Fault, and Malham Cove and Gordale Scar, two miles to the south, were formed by the Mid Craven Fault. Easy erosion of the softer shale rocks to the south of the latter fault has created a sharp southern edge to the limestone plateau north of the fault. This step in the landscape was further developed by erosion during the various ice ages when glaciers flowing from the north deepened the basin where the tarn now stands and scoured the rock surface between the tarn and the village, leading later to the formation of limestone pavements. Glacial meltwater carved out the Watlowes dry valley above the cove. There are a number of theories as to the formation of the vertical wall of limestone that forms Malham Cove, whose origins appear to be in a combination of erosion by ice, water and underground water. It is thought that water pouring down the Watlowes valley would have cascaded over the cove and cut the waterfall back about 600 metres from the faultline, although this does not explain why the cove is wider than the valley above.
    [Show full text]
  • Yorkshire's Hidden Vale Area
    YORKSHIRE’S HIDDEN VALE The roles of the River Derwent and the River Hertford in Landscape Action for the Eastern Vale of Pickering A report by Bowles Green Ltd and The Yorkshire Wildlife Trust With generous support from LEADER Coast, Wolds, Wetlands and Waterways (CWWW) through the East Riding and North Yorkshire Waterways Partnership; The Rural Development Programme for England/LEADER East Riding of Yorkshire 1 Acknowledgements This report would not have been possible without the generous grant from LEADER Coast, Wolds, Wetlands and Waterways (CWWW) via the East Riding and North Yorkshire Waterways Partnership. The authors would also like to thank Harriet Linfoot for her hard work in the local communities, gathering the essential information which shaped this report. Over 200 people provided responses to face to face questions or the on-line survey. Their honest engagement made this report possible and worthwhile. A large number of people commented on the draft of this report and others unselfishly allowed their works and writings to be used or quoted. To all these people, our grateful thanks. Cover photograph Flixton Brow view from the top of the escarpment across the Valley ©Tim Burkinshaw Senior Authors Yorkshire Wildlife Trust Kevin Bayes Harriet Linfoot Bowles Green Steven Green Judith Bowles 2 Contents page 1.0 Summary 5 2.0 Introduction to the document 7 3.0 Introduction to Yorkshire’s Hidden Vale 8 4.0 Background documents on Landscape and Significance 9 5.0 Programme Area 10 6.0 The Cultural and Natural Heritage of the Programme
    [Show full text]
  • Birds in Huddersfield 1990
    HßWC, Huddersfield Birdwatchers' Club Birds in Huddersfield 1990 ANNUAL REPORT 102-4 ADDITIONS TO 1990 REPORT GARGANEY Anas querquedaula Blackmoorfoot Res. A pair were present on 30th March. (MLD et ai) RED-BREASTED MERGANSER Mergus senator Ringstone Edge Res. 2 on 21 st October (NC) RUDDY DUCK Oxyura jamaicensis Blackmoorfoot Res. 4 males and 3 females on 30th April (MLD) MERLIN Falco columbarius Blackmoorfoot Res. 1 on 30th July and 13th August. KNOT Calidris canutus Blackmoorfoot Res. 1 in summer plumage on 19th July (MLD et al). GLAUCOUS GULL Larus hyperboreus Blackmoorfoot Res. 1 adult on 4th March (MLD, JMP, JP). KITTIWAKE Rissa tridactyla Blackmoorfoot Res. 1 immature on 14th March and an adult on 23rd April. The revised total for species seen in the area in 1990 is 172. BIRDS IN HUDDERSFIELD 1990 Report of Huddersfield Birdwatchers' Club CONTENTS Front Cover Map of the Club Area Page 2 Presidents Report for 1990 3 Field Trips in 1990 - David Butterfield 9 Introduction to the Classified List 10 Notes on the Classified List 11 Classified List 50 List of Contributors 51 Ringing Report 54 Local Retraps and Recoveries 55 Ring Total List 1990 56 Club Officials for 1991 ILLUSTRATION Front Cover Black Tern - Stuart Brocklehurst PRESIDENT'S RETORT 1990 proved to be a time for change on our committee, with further changes envisaged in 1991 all of which will undoubtedly bear fruit in future years. Brian Armitage, who had held office in various capacities in all but two years since 1977, had already resigned his post as secretary, and was replaced by Lynn Stanley, whose first year was certainly not an easy one.
    [Show full text]
  • Biodiversity Action Plan - Contents
    The draft BAP was prepared by the Scarborough Biodiversity Steering Group and was consulted upon in December 2004. Following consideration of the responses received the BAP was revised by the BAP Steering Group and formally adopted by the Steering Group and Scarborough Borough Council in April 2005. Additional thanks to the following people who prepared Habitat and Species Action Plans: Graham Megson (North Yorkshire Count Council), Bob Missin, Paul Bullimore (Sea Life Centre), Scarborough Field Naturalists, Simon Pickles and James Mortimer of the North and East Yorkshire Ecological Data Centre and John Drewitt (North Yorkshire Bat Group). Scarborough's Biodiversity Action Plan - Contents Introduction What is Biodiversity? 4 Why is Biodiversity important? 4 The National and Regional Framework 4 So, what is a Biodiversity Action Plan (BAP) and why does Scarborough need one? 5 The Scarborough BAP What area does the BAP cover? 8 Who prepared the BAP? 8 Criteria for the selection of Local Priority Habitats. 8 Criteria for the selection of Local Priority Species. 8 Taking Action and Monitoring Introduction 10 Information and Data 10 Sites of Special Scientific Interest in Scarborough 11 Sites of Importance for Nature Conservation 11 Other Strategies and Plans 12 Reporting and Monitoring 12 Review 13 General Action Plan 13 Getting Involved How Can I Help With This Biodiversity Thing? 16 Introduction to Scarborough’s Wildlife Diversity Scarborough’s Wildlife Diversity 18 The Habitat Action Plans The Selected Habitats and Species 22 Woodland
    [Show full text]
  • THE UNIVERSITY of HULL the Influence of Flow Management And
    THE UNIVERSITY OF HULL The influence of flow management and habitat improvement works on fish communities in Yorkshire rivers being a Thesis submitted for the Degree of Doctor of Philosophy in the University of Hull by Marie Jane Taylor BSc. (Hons) (Hull) MSc (Res) (Hull) May 2017 TABLE OF CONTENTS LIST OF TABLES V LIST OF FIGURES IX ACKNOWLEDGEMENTS XIII ABSTRACT XIV 1 GENERAL INTRODUCTION 1 2 IMPORTANCE OF THE NATURAL FLOW REGIME FOR FISH 5 Introduction 5 The natural flow regime 5 2.2.1 Timing 6 2.2.2 Continuity/predictability 7 2.2.3 Rapidity of change 7 2.2.4 Amplitude/ magnitude 8 2.2.5 Duration 9 Modification of natural flow regimes 9 2.3.1 Reservoirs 9 2.3.2 Flood Defence 11 Current UK guidance of flow regulation and flood risk management 14 River rehabilitation and mitigation measures with specific reference to reservoirs and flood defence 16 2.5.1 Reservoir mitigation measures 17 2.5.2 Biological responses to reservoir mitigation measures 21 2.5.3 Flood defence mitigation measures 22 2.5.4 Biological response to habitat improvement works whilst considering flood risk 25 Study species 27 3. INFLUENCE OF MODIFIED RESERVOIR FLOW RELEASES ON BROWN TROUT POPULATIONS IN DOWNSTREAM RIVER REACHES 29 3.1 Introduction 29 3.2 Methodology 33 3.2.1 Study area 33 3.2.2 Fish survey methodology 37 3.2.3 HABSCORE data collection 37 3.2.4 Data analysis 38 3.3 Results 43 3.3.1 Hydrological flow parameters 43 3.3.2 Brown trout population density trends 46 3.3.3 HABSCORE 53 3.4 Discussion 56 3.4.1 Overview 56 3.4.2 Hydrological trends 56 3.4.3 Brown
    [Show full text]
  • Free Reservoir Walks
    F R E E re S er VOI R WALKS RESERVOIR WALKS TO BLOW AWAY THE COBWEBS BROUGht TO YOU by ONly AVAIlable IN YORKSHIRE. WE LOOK AFTER 72,000 ACRES OF LAND IN YORKSHIRE, SPANNING THE NORTH YORK MOORS, THE WOLDS, AREAS OF OUTSTANDING NATURAL BEAUTY AND SOME OF THE BEST NATIONAL PARKS IN THE COUNTRY. AND ALL THIS IS FREE FOR YOU TO ENJOY. Here’s a TASTER OF SOME OF OUR FREE RESERVOIR WALKS... VISIT OUR WEBSITE FOR MORE WALKS YORKSHIREWATER.COM/RECREATION OUR walk DIFFICUlty ratINGS In this pack you’ll find directions to the site, a summary of the walk, a list of facilities available, a detailed route map and route instructions. These walks are easy to complete and do not require special footwear. Most of the walks are suitable for wheelchairs and pushchairs. These walks are mainly flat and on surfaced paths, however they can become muddy in wet weather. These walks include rough terrain and steeper gradients, making them unsuitable for young children and the infirm. These walks are for the experienced rambler, are at high altitudes and require good compass reading skills. Walking boots, food and drink and appropriate clothing and waterproofs are essential. Podcasts are available for walks featuring this symbol, just visit the recreation section on the Yorkshire Water website and click on the podcast link. Visit the easy access page for a choice of more walks, all of which are suitable for wheelchairs and pushchairs. Great care has been taken to ensure that the information in our activity packs (or other information made available) is accurate.
    [Show full text]
  • At Fox Hagg Nature Reserve the Heathland Is Rapidly Becoming
    Management Plan for Fox Hagg Nature Reserve DRAFT April 2019 – March 2027 Acknowledgements Sheffield and Rotherham Wildlife Trust would like to thank the many individuals who have contributed to the formulation of this management plan. Please note that sensitive species data has been omitted from this report. Report by: Alice Binns and Chris Doar Sheffield and Rotherham Wildlife Trust 37 Stafford Road Sheffield, S2 2SF 0114 263 4335 www.wildsheffield.com 2 CONTENTS Contents 1.0 INTRODUCTION ...................................................................... 6 1.1 PURPOSES AND FORMULATION OF THE PLAN ............................................................................................ 6 1.2 STRUCTURE OF THE PLAN ............................................................................................................................. 6 2.0 SITE DESCRIPTION .................................................................. 7 2.1 GENERAL INFORMATION ............................................................................................................................. 7 2.2 ENVIRONMENTAL INFORMATION ............................................................................................................. 10 2.3 BIODIVERSITY ...................................................................................................................................................... 11 2.4 INFRASTRUCTURE.................................................................... 14 2.5 CULTURAL CONTEXT .............................................................
    [Show full text]
  • Filming Opportunities
    Filming Opportunities Opportunities for filming on the Yorkshire Water Estate 4th April 2016 Yorkshire Water | Filming Opportunities | Opportunities for filming on the Yorkshire Water Estate 2 Our Locations Available Yorkshire Water is one of the largest landowners in Yorkshire with an Estate amounting to around 30,000 Hectares (70,000 Acres). We believe we hold an excellent opportunity available for filming on our land with our diverse and eclectic mix of sites. Each area is unique in itself with various different settings and backdrops extending from woodland, moorland and operational sites. Thruscross Reservoir Timble Ings Rodley Nature Reserve (Bing, 2016) Widdop Dam Scargill Reservoir Track Esholt Hall Roundhill Reservoir Langsett Reservoir Rishworth Moor Yorkshire Water | Filming Opportunities | Opportunities for filming on the Yorkshire Water Estate 3 Map 1: Locations of the opportunities available (locations are not exact) Scarborough Scar House/Angram Ripon Malton Washburn Valley Harrogate Skipton York Tophill Low Rodley Nature Reserve Stanbury Leeds Hull Moor Bradford Huddersfield Scammonden Doncaster Langsett Sheffield Yorkshire Water | Filming Opportunities | Opportunities for filming on the Yorkshire Water Estate 4 1. What is available at the locations? LOCATION WOODS WATER MOORS CAR PARK ACCESS OTHER? Washburn Valley Car parks are Access is off the Tenanted Land (Fewston, Swinsty, available A59 to various Public paths exist Scargill, Timble locations including around this area Ings, Thruscross) Fewston, Swinsty and Thruscross
    [Show full text]
  • Reservoir Released Waves As a Transient Riverine Pollution Mitigation Tool
    Reservoir Released Waves as a Transient Riverine Pollution Mitigation Tool An examination of the feasibility of using waves of water released from a reservoir as a response to pollution spills. Simon DeSmet Submitted in accordance with the requirements for the degree of Doctor of Philosophy The University of Leeds School of Geography December 2014 - ii - The candidate confirms that the work submitted is his/her own and that appropriate credit has been given where reference has been made to the work of others. This copy has been supplied on the understanding that it is copyright material and that no quotation from the thesis may be published without proper acknowledgement. © 2014 The University of Leeds and Simon DeSmet - iii - Acknowledgements I have depended on God and faith to carry me though the preparation of this Thesis. A number of individuals have been of great assistance over the past few years. Firstly my two primary supervisors Dr Paul Kay and Dr Jonathan Carrivick have been immensely patient, taught me to write properly, vetted my ideas and have provided great wisdom and experience. Technical assistance with the Fluent software was provided by Dr Andy Sleigh and Dr Carl Gikeson. Access to the SORBY flume facility and input on ideas for the flume study were given by Dr Daniel Parsons and Dr Gareth Keevil. For help in designing the field study and collecting the data I would like to thank David Ashley, Rachel Gasior, Dr Pengfei Li, Dr Ben Gillespie and numerous individuals a the Environment Agency. Additionally I owe a thanks to Rachel Homer for assistance with statistics.
    [Show full text]
  • A Deterministic Method for Evaluating Block Stability on Masonry Spillways
    Utah State University DigitalCommons@USU International Symposium on Hydraulic Structures May 16th, 12:10 PM A Deterministic Method for Evaluating Block Stability on Masonry Spillways Owen John Chesterton Mott MacDonald, [email protected] John G. Heald Mott MacDonald John P. Wilson Mott MacDonald Bently John R. Foster Mott MacDonald Bently Charlie Shaw Mott MacDonald See next page for additional authors Follow this and additional works at: https://digitalcommons.usu.edu/ishs Recommended Citation Chesterton, Owen (2018). A Deterministic Method for Evaluating Block Stability on Masonry Spillways. Daniel Bung, Blake Tullis, 7th IAHR International Symposium on Hydraulic Structures, Aachen, Germany, 15-18 May. doi: 10.15142/T3N64T (978-0-692-13277-7). This Event is brought to you for free and open access by the Conferences and Events at DigitalCommons@USU. It has been accepted for inclusion in International Symposium on Hydraulic Structures by an authorized administrator of DigitalCommons@USU. For more information, please contact [email protected]. Author Information Owen John Chesterton, John G. Heald, John P. Wilson, John R. Foster, Charlie Shaw, and David E. Rebollo This event is available at DigitalCommons@USU: https://digitalcommons.usu.edu/ishs/2018/session2-2018/2 7th International Symposium on Hydraulic Structures Aachen, Germany, 15-18 May 2018 ISBN: 978-0-692-13277-7 DOI: 10.15142/T3N64T A Deterministic Method for Evaluating Block Stability on Masonry Spillways O.J. Chesterton1, J.G. Heald1, J.P. Wilson2, J.R. Foster2, C. Shaw2 & D.E Rebollo2 1Mott MacDonald, Cambridge, United Kingdom 2Mott MacDonald Bentley, Leeds, United Kingdom E-mail: [email protected] Abstract: Many early spillways and weirs in the United Kingdom were constructed or faced with masonry.
    [Show full text]
  • Green Routes - November 2015 Finkle Street Old Denaby Bromley Hoober Bank
    Langsett Reservoir Newhill Bow Broom Hingcliff Hill Pilley Green Tankersley Elsecar Roman Terrace Upper Midhope Upper Tankersley SWINTON Underbank Reservoir Midhopestones Green Moor Wortley Lea Brook Swinton Bridge Midhope Reservoir Hunshelf Bank Smithy Moor Green Routes - November 2015 Finkle Street Old Denaby Bromley Hoober Bank Gosling Spring Street Horner House Low Harley Barrow Midhope Moors Piccadilly Barnside Moor Wood Willows Howbrook Harley Knoll Top Cortworth Fenny Common Ings Stocksbridge Hoober Kilnhurst Thorncliffe Park Sugden Clough Spink Hall Wood Royd Wentworth Warren Hood Hill High Green Bracken Moor Howbrook Reservoir Potter Hill East Whitwell Carr Head Whitwell Moor Hollin Busk Sandhill Royd Hooton Roberts Nether Haugh ¯ River Don Calf Carr Allman Well Hill Lane End Bolsterstone Ryecroft Charltonbrook Hesley Wood Dog Kennel Pond Bitholmes Wood B Ewden Village Morley Pond Burncross CHAPELTOWN White Carr la Broomhead Reservoir More Hall Reservoir U c Thorpe Hesley Wharncliffe Chase k p Thrybergh Wigtwizzle b Scholes p Thorpe Common Greasbrough Oaken Clough Wood Seats u e Wingfield Smithy Wood r Brighthorlmlee Wharncliffe Side n Greno Wood Whitley Keppel's Column Parkgate Aldwarke Grenoside V D Redmires Wood a Kimberworth Park Smallfield l o The Wheel l Dropping Well Northfield Dalton Foldrings e n Ecclesfield y Grange Lane Dalton Parva Oughtibridge St Ann's Eastwood Ockley Bottom Oughtibridg e Kimberworth Onesacr e Thorn Hill East Dene Agden Dalton Magna Coldwell Masbrough V Bradgate East Herringthorpe Nether Hey Shiregreen
    [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]