Strategic Flood Risk Assessment
In order to guide development within North Hertfordshire and to ensure that the effects of flooding are properly considered in determining planning applications, the Council commissioned a Strategic Flood Risk Assessment (SFRA). This document was prepared by consultants WSP Group.
A draft of the document was considered by the Council's Cabinet on 18 December 2007. That draft was sent to the Environment Agency to assess. At their request, some elements of the document were amended or reassessed. In July 2008 the Environment Agency confirmed that the revised document is fit for purpose. The document is therefore published as a background paper to be used in the preparation of the Local Development Framework and in determining planning applications.
Strategic Flood Risk Assessment Main Report (1127kb 
Appendix A Floodzones and water authority areas (372kb)
Appendix B Contour mapping (4989kb)g
Appendix C Watercourses plan update (5954kb)
Appendix C Hydraulic structures Hiz (2251kb)
Appendix C Hydraulic structures Hiz Ivel data (19kb)
Appendix C Hydraulic structures Mimram (1857kb)
Appendix C Hydraulic structures Mimram data (29kb)
Appendix C Hydraulic structures additional map (2350kb)
Appendix C Hydraulic structures additional data (31kb)
Appendix D Photographs (8486kb)
Appendix E Environment Agency plans (7448kb)
Appendix E Historic fluvial flooding (5640kb)
Appendix E Hitchin north (1285kb)
Appendix E Hitchin east (1412kb)
Appendix E Hitchin south (1517kb)
Appendix E Hitchin west (1478kb)
Appendix E Letchworth (1675kb)
Appendix F Historic sewer flooding (9427kb)
Appendix F Strategic infrastructure (6388kb)
Appendix G Core Strategy Key Diagram (42kb)
Appendix G Transport and Infrastructure Study maps (4987kb)
Appendix H Sustainable Urban Drainage Systems Viability Plan (16310kb)
Appendix H Alternative Sustainable Urban Drainage Systems Techniques (111kb)
