Environmental Baseline Data
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Our Dry Weather Plan South East Water’s 2021 draft drought plan Appendix I: Environmental Baseline Data March 2021 South East Water Rocfort Road Snodland Kent ME6 5AH Drought Plan | March 2021 Contents This appendix contains the environmental baseline reports for the two river drought permit sites – the Rivers Ouse and Cuckmere, and also the Halling groundwater site. The detailed site surveys, location searches and search maps for these sites, and that form the baseline for the rest of the groundwater permit sites are contained within a separate folder of supporting documentation which is available on request from South East Water. 1. River Cuckmere Environmental Baseline 2020 2. Enhanced aquatic environmental baseline for the Grey Pit/Halling source 3. River Ouse Environmental Baseline 2020 2 River Cuckmere Drought Plan: Environmental Baseline Draft J00640/ Version 1.0 Client: South East Water January 2021 Copyright © 2021 Johns Associates Limited DOCUMENT CONTROL Report prepared for: South East Water Main contributors: Matt Johns BSc MSc CEnv MCIEEM FGS MIFM, Director Liz Johns BSc MSc CEnv MCIEEM MRSB, Director Jacob Scoble BSc GradCIWEM, Geospatial Analyst Reviewed by: Liz Johns BSc MSc CEnv MCIEEM MRSB, Director Issued by: Matt Johns BSc MSc CEnv MCIEEM FGS MIFM, Director Suites 1 & 2, The Old Brewery, Newtown, Bradford on Avon, Wiltshire, BA15 1NF T: 01225 723652 | E: [email protected] | W: www.johnsassociates.co.uk Copyright © 2021 Johns Associates Limited DOCUMENT REVISIONS Version Details Date 1.0 Draft baseline issued for client comment 25 January 2021 Third party disclaimer Any disclosure of this report to a third party is subject to this disclaimer. The report was prepared by Johns Associates at the instruction of, and for use by, our client named on the front of the report. It does not in any way constitute advice to any third party who is able to access it by any means. Johns Associates excludes to the fullest extent lawfully permitted all liability whatsoever for any loss or damage howsoever arising from reliance on the contents of this report. We do not however exclude our liability (if any) for personal injury or death resulting from our negligence, for fraud or any other matter in relation to which we cannot legally exclude liability. Copyright © 2021 Johns Associates Limited NON-TECHNICAL SUMMARY Purpose of the Report To compile desk and field based information to inform an environmental baseline to be used by South East Water in support of potential future drought permit/orders and drought monitoring. Surveys Undertaken OS mapping Google Earth imagary Ecological desk study Open source data on geology, soils, relevant environmental designations Catchment Explorer data River Habitat Survey River Corridor Survey Fish Macro-invertebrates Protected Notable Species Structures Water quality Further Surveys Spring freshwater macroinvertebrate surveys and river corridor / protected species surveys Required Data Valid Until 2024 (next SEW Drought Plan Cycle date) Copyright © 2021 Johns Associates Limited TABLE OF CONTENTS 1 INTRODUCTION 1 1.1 The Purpose of this Report ...................................................................................................................................... 1 1.2 About South East Water ........................................................................................................................................... 2 1.3 The Current Operating Licence ............................................................................................................................... 2 1.4 The Structure of this Report ..................................................................................................................................... 3 2 SCOPE AND METHODOLOGY 5 2.1 Scope ......................................................................................................................................................................... 5 2.2 General Environmental Setting ............................................................................................................................... 5 2.3 Water RESOURCES, Hydrology and Rainfall .......................................................................................................... 6 2.4 Water Quality ............................................................................................................................................................ 6 2.4.1 Desk Study ............................................................................................................................................................................... 6 2.4.2 Field Survey .............................................................................................................................................................................. 6 2.5 Ecology and Habitats ............................................................................................................................................... 6 2.5.3 Desk Study ............................................................................................................................................................................... 6 2.5.4 Field Survey .............................................................................................................................................................................. 7 2.5.5 Fish Survey Above Arlington Intake 2017 .............................................................................................................................. 7 2.6 Structures ................................................................................................................................................................... 8 2.6.6 Desk Study ............................................................................................................................................................................... 8 2.6.7 Field Survey .............................................................................................................................................................................. 8 2.7 Recreational Features ............................................................................................................................................... 8 2.7.8 Desk Study ............................................................................................................................................................................... 8 3 RESULTS AND ANALYSIS 9 3.1 General Environmental Setting ............................................................................................................................... 9 3.1.1 Overview .................................................................................................................................................................................. 9 3.1.2 Topography ............................................................................................................................................................................. 9 3.1.3 Geology .................................................................................................................................................................................. 10 3.1.4 Soils ........................................................................................................................................................................................ 10 3.1.5 Designated Land and Water ................................................................................................................................................ 11 3.1.6 Drainage Network ................................................................................................................................................................. 16 3.1.7 Landuse .................................................................................................................................................................................. 16 3.1.8 Recreation .............................................................................................................................................................................. 17 3.1.9 Visual and Cultural Designations ......................................................................................................................................... 18 3.1.10 Habitat Designations ............................................................................................................................................................ 20 3.2 Water Resources, Hydrology and Rainfall ............................................................................................................. 20 3.3 Water Quality .......................................................................................................................................................... 21 3.3.11 Historic Environment Agency Data ...................................................................................................................................... 21 3.3.12 Historic Water Framework Directive Data ........................................................................................................................... 22 3.3.13 Current EA Water Framework Directive Water Quality Data ............................................................................................ 27 3.3.14 2020 Water Quality Field Measurements ...........................................................................................................................