River Ouse Catchment Flood Management Plan
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Ouse Catchment Flood Management Plan Summary Report December 2010 managing flood risk We are the Environment Agency. It’s our job to look after your environment and make it a better place – for you, and for future generations. Your environment is the air you breathe, the water you drink and the ground you walk on. Working with business, Government and society as a whole, we are making your environment cleaner and healthier. The Environment Agency. Out there, making your environment a better place. Published by: Environment Agency Rivers House 21 Park Square South Leeds LS1 2QG Tel: 0870 8506506 Email: [email protected] www.environment-agency.gov.uk © Environment Agency All rights reserved. This document may be reproduced with prior permission of the Environment Agency. December 2010 Introduction I am pleased to introduce our summary of the Ouse Catchment Flood Management Plan (CFMP). This CFMP gives an overview of the flood risk in the Ouse catchment and sets out our preferred plan for sustainable flood risk management over the next 50 to 100 years. The Ouse CFMP is one of 77 CFMPs for England and per cent annual probabilty river flood, 31327 properties Wales. Through the CFMPs, we have assessed inland are at risk of flooding. This figure does not take into flood risk across all of England and Wales for the first consideration the defences which currently reduce risk time. The CFMP considers all types of inland flooding, in the catchment. The risks from surface water have not from rivers, ground water, surface water and tidal been fully explored within this CFMP although flooding flooding, but not flooding directly from the sea from surface water has been recorded in the catchment. (coastal flooding), which is covered by Shoreline We cannot reduce flood risk on our own, we will Management Plans (SMPs). Our coverage of surface therefore work closely with all our partners to improve and ground water is however limited due to a lack the co-ordination of flood risk activities and agree the of available information. most effective way to manage flood risk in the future. The role of CFMPs is to establish flood risk management We have worked with others including Planning and policies which will deliver sustainable flood risk Local Authorities, Internal Drainage Boards, Yorkshire management for the long term. This is essential if we Water, Yorkshire Wildlife Trust and Natural England to are to make the right investment decisions for the future develop this CFMP. and to help prepare ourselves effectively for the impact This is a summary of the main CFMP document, if you of climate change. We will use CFMPs to help us target need to see the full document an electronic version our limited resources where the risks are greatest. can be obtained by emailing necfmps@environment- This CFMP identifies flood risk management policies to agency.gov.uk or alternatively paper copies can be assist all key decision makers in the catchment. It was viewed at our Yorkshire offices. produced through a wide consultation and appraisal process; however it is only the first step towards an integrated approach to Flood Risk Management. As we all work together to achieve our objectives, we must monitor and listen to each others progress, discuss what has been achieved and consider where we may need to review parts of the CFMP. The risk of flooding is significant within the Ouse CFMP area. The key sources of flood risk are river, tidal and David Dangerfield surface water flows. Analysis shows that during a one Yorkshire and North East Regional Director Environment Agency Ouse Catchment Flood Management Plan 1 Contents The purpose of a CFMP in managing flood risk 3 4 York 16 5 Boroughbridge 17 Catchment overview 4 6 Tidal Ouse and Wharfe 18 Current and future flood risk 6 7 Catterick, Ripon, Knaresborough 20 and Wetherby Future direction for flood risk management 10 8 Wharfe Foothills and Oak Beck 22 Sub-areas 9 Middle Ure and Lower Dunsforth 24 1 The Uplands 12 10 Wharfe Rural Towns 26 2 The Washlands 14 Map of the CFMP policies 28 3 Wiske and Cod Beck 15 2 Environment Agency Ouse Catchment Flood Management Plan The purpose of a CFMP in managing flood risk CFMPs help us to understand the • IDBs, water companies and CFMPs aim to promote more scale and extent of flooding now other utilities to help plan their sustainable approaches to managing and in the future, and set policies activities in the wider context flood risk. The policies identified for managing flood risk within the of the catchment; in the CFMP will be delivered catchment. CFMPs should be used through a combination of different • Transportation planners; to inform planning and decision approaches. The following actions making by key stakeholders such as: • Land owners, farmers and and their implementation will be land managers that manage subject to further appraisal and • the Environment Agency, who will and operate land for funding, and prioritised by their use the plan to guide decisions agriculture, conservation supporting evidence. The CFMP is on investment in further plans, and amenity purposes; a living document and actions will projects or actions; be updated as necessary to reflect • the public and businesses to • Regional planning bodies and changing responsibilities and enhance their understanding local authorities who can use delivery mechanisms. of flood risk and how it will the plan to inform spatial be managed. planning activities and emergency planning; Figure 1 shows the relationship between CFMPs, delivery plans, projects and actions Policy planning • CFMPs and Shoreline Management Plans. • Action plans define requirement for delivery plans, projects and actions. Policy delivery plans (see note) Projects and actions • Influence spatial planning to reduce risk • Make sure our spending delivers the best and restore floodplains. possible outcomes. • Prepare for and manage floods • Focus on risk based targets, for example (including local Flood Warning plans). numbers of households at risk. • Managing assets. • Water level management plans. • Land management and habitat creation. Note: Some plans may not be led by us – we may • Surface water management plans. identify the need and encourage their development. Environment Agency Ouse Catchment Flood Management Plan 3 Catchment overview The Ouse CFMP study-area covers The CFMP area covers the districts approximately 4,847 square of Bradford, Craven, East Riding of kilometres. There are nearly Yorkshire, Hambleton, Harrogate, 606,000 people living within the Leeds, Richmondshire, Ryedale, CFMP area. There are four major Selby, and York. Urban land use river systems that come together to occupies 2.2 per cent of the CFMP form the River Ouse CFMP study- area. The area is vital to the regional area. The Rivers Swale; Ure; Nidd; economy as York and Harrogate fall and Wharfe. The CFMP area can within the ‘Golden Triangle’ as a be split into nine sub-catchments; vital commuter district for the city the Upper Swale, Lower Swale and of Leeds. Wiske, Upper Ure, Middle and Lower The CFMP area has a wealth of Ure, Nidd, Upper Wharfe, Middle environmental and culturally and Lower Wharfe, Upper Ouse recognised sites. These include and Foss and the Lower Ouse. The 132 Sites of Special Scientific lower catchment is influenced by Interest (SSSIs), 10 Special Area for the tides as the River Ouse is tidal Conservation (SACs) and 3 Special to Naburn and the River Wharfe is Protection Area (SPAs). Culturally tidal to Tadcaster. The headwaters there are 861 Scheduled Ancient of the main river systems are Monuments (SAMs), 1 World characterised by steeper river Heritage Site at ‘Studley Royal Park gradients which flow through and Ruins of Fountains Abbey, and generally rural areas which are 32 Registered Parks and Garden. scattered with small settlements. In contrast, downstream of Ripon The Ouse CFMP is bordered by five on the River Ouse, the area is other Yorkshire and North East generally low lying with wide Region CFMP areas, the Hull & floodplains. 95 per cent of the Coastal Streams, Derwent, Tees, CFMP area comprises agricultural Aire and Don CFMPs. It is also land. This is important to the local bordered by the Eden, Lune and economy as nearly 55 per cent of Ribble CFMPs which are managed this is classified as between grades by the Environment Agency’s North 1 and 3: excellent to moderate West Region. quality productive land. 4 Environment Agency Ouse Catchment Flood Management Plan Map 1. The location and extent of the Ouse CFMP area The River Ouse Environment Agency Ouse Catchment Flood Management Plan 5 Current and future flood risk Overview of the current flood risk What is at risk? Flood risk has two components: Currently the main sources of flood Within the Ouse catchment there the chance (probability) of a risk within the catchment are: are over 31,000 properties at risk particular flood and the impact (or from a one per cent flood from • from rivers, which takes place consequence) that the flood would rivers, without taking into account throughout the CFMP area have if it happened. The probability flood defences. There are over 372 of a flood relates to the likelihood of • the tidal influence is present kilometres of flood defences that a flood of that size occurring within downstream of Naburn reduce the probability of flooding in a one year period, it is expressed as some communities. a percentage. For example, a 1 per • surface water drainage and The analysis of flooding to cent flood has a 1 per cent chance sewers have the potential to environmental sites shows there are or 0.01 probability of occurring in affect most urban areas in the over 12.2 square kilometres SSSI any one year.