South Staffordshire, Cannock Chase, Lichfield & Stafford Strategic Flood Risk Assessment Volume 1 - Report June 2014 Quality Management Job No CS069598 Title South Staffordshire, Cannock Chase, Lichfield & Stafford Level 1 SFRA Update Location South Staffordshire Council Document Ref N/A Issue / Revision Final (Version 2) Date 19th June 2014 Prepared by Jane Tingay Signature (for file) Checked by Louise Tattersall Signature (for file) Authorised by Steve Thompsett Signature (for file) Revision Status Rev Date Issue / Purpose/ Comment Prepared Checked Authorised Draft 28/02/2014 Issue draft for comment JT LT ST Final 30/04/2014 Final JT LT ST Final 19/06/2014 Final (Version 2) JT - ST This document and related appendices have been updated on behalf of South Staffordshire, Cannock Chase Council, Lichfield District Council & Stafford Borough Council by: Quays Office Park, Conference Avenue, Portishead, BS20 7LZ. Tel 01275 840 840 www.capita.co.uk Contents GLOSSARY ........................................................................................................................................................ 6 1. INTRODUCTION ...................................................................................................................................... 10 1.1 BACKGROUND ........................................................................................................................................... 10 1.2 SFRA AIMS .............................................................................................................................................. 10 1.3 SFRA OBJECTIVES...................................................................................................................................... 11 1.4 SFRA DELIVERABLES .................................................................................................................................. 11 1.5 SFRA STRUCTURE ...................................................................................................................................... 12 2. PLANNING CONTEXT .............................................................................................................................. 13 2.1 PLANNING POLICY FRAMEWORK ................................................................................................................... 13 2.2 EUROPEAN (EU) POLICIES............................................................................................................................ 13 2.3 NATIONAL PLANNING POLICIES ..................................................................................................................... 17 2.4 LOCAL PLANNING POLICIES .......................................................................................................................... 19 2.5 SURFACE WATER MANAGEMENT PLAN PHASE 1 & 2 ....................................................................................... 23 2.6 PRELIMINARY FLOOD RISK ASSESSMENT ......................................................................................................... 24 2.7 ENVIRONMENT AGENCY PLANNING POLICY ..................................................................................................... 25 3. SFRA METHODOLOGY ............................................................................................................................ 29 3.1 LEVEL 1 – AREA FLOOD SOURCE REVIEW AND SEQUENTIAL TEST ........................................................................ 29 3.2 LEVEL 2 – DEVELOPMENT SITE ASSESSMENTS FOR EXCEPTION TESTING ................................................................ 29 3.3 DATA COLLECTION ..................................................................................................................................... 30 3.4 SFRA MAPS ............................................................................................................................................. 30 4. FLOOD RISK ............................................................................................................................................ 36 4.1 INTRODUCTION ......................................................................................................................................... 36 4.2 SUMMARY OF FLOOD RISK IN CANNOCK CHASE ............................................................................................... 36 4.3 SUMMARY OF FLOOD RISK IN LICHFIELD DISTRICT COUNCIL ............................................................................... 37 4.4 SUMMARY OF FLOOD RISK IN SOUTH STAFFORDSHIRE ....................................................................................... 40 4.5 SUMMARY OF FLOOD RISK IN STAFFORD BOROUGH COUNCIL ............................................................................. 42 5. HOW TO USE THE SFRA IN LOCAL PLANNING ......................................................................................... 45 5.1 INTRODUCTION ......................................................................................................................................... 45 5.2 SEQUENTIAL TEST ...................................................................................................................................... 45 5.3 EXCEPTION TEST ........................................................................................................................................ 51 5.4 CLIMATE CHANGE ...................................................................................................................................... 53 6. GUIDANCE FOR DEVELOPERS ................................................................................................................. 55 6.1 FLOOD RISK ASSESSMENTS (FRAS) ............................................................................................................... 55 6.2 CONSULTATION WITH THE ENVIRONMENT AGENCY ........................................................................................... 57 6.3 CONSULTATION WITH THE LEAD LOCAL AUTHORITIES ........................................................................................ 57 6.4 CONSULTATION WITH SEVERN TRENT WATER .................................................................................................. 57 6.5 CONSULTATION WITH CANAL & RIVER TRUST .................................................................................................. 58 6.6 SUGGESTED FLOOD RESILIENT CONSTRUCTION ................................................................................................ 58 7. FLOOD WARNING SYSTEMS AND FLOOD MANAGEMENT MEASURES .................................................... 60 7.1 FLOOD DEFENCES, STORAGE AREAS & RESIDUAL RISK ...................................................................................... 60 7.2 FLOOD WARNING ...................................................................................................................................... 65 7.3 FLOOD & EMERGENCY RESPONSE PLAN ......................................................................................................... 68 8. GUIDANCE FOR APPLICATION OF SUDS .................................................................................................. 71 8.1 WHAT ARE SUDS? ..................................................................................................................................... 71 8.2 SUDS POLICIES ......................................................................................................................................... 71 3 8.3 ACHIEVING SUDS IN DEVELOPMENTS ............................................................................................................ 74 8.4 SUDS TECHNIQUES .................................................................................................................................... 74 8.5 SUDS DESIGN ........................................................................................................................................... 77 8.6 WHERE CAN SUDS BE UTILISED .................................................................................................................... 77 8.7 SUDS CONSTRAINTS ................................................................................................................................... 79 8.8 GROUNDWATER VULNERABILITY ................................................................................................................... 79 9. POLICY GUIDANCE AND RECOMMENDATIONS ....................................................................................... 81 9.1 FLOOD RISK OBJECTIVE 1: TO SEEK FLOOD RISK REDUCTION THROUGH SPATIAL PLANNING AND SITE DESIGN ............. 82 9.2 FLOOD RISK OBJECTIVE 2: REDUCE SURFACE WATER RUNOFF ............................................................................ 83 9.3 FLOOD RISK OBJECTIVE 3: TO SUPPORT RIVER BASIN MANAGEMENT PLANNING AND WATER FRAMEWORK DELIVERY .. 84 9.4 FLOOD RISK OBJECTIVE 4: TO PROTECT AND PROMOTE AREAS FOR FUTURE FLOOD ALLEVIATION SCHEMES ................ 84 9.5 FLOOD RISK OBJECTIVE 5: TO IMPROVE FLOOD AWARENESS AND EMERGENCY PLANNING ....................................... 85 9.6 FLOOD RISK OBJECTIVE 6: TO PREVENT NEW DEVELOPMENT WITHIN SENSITIVE DEVELOPMENT LOCATIONS .................. 85 9.7 RECOMMENDATIONS .................................................................................................................................. 86 9.8 SITE ALLOCATION CONSIDERATION ...............................................................................................................