Habitat Mapping project 1994-1997

Habitat Mapping project 1994-1997
Alternative Title
Habitat94to97, Habitat94to97_Lines, Habitat94to97_Polygons, Phase 1 Habitat Survey; phase1_polygon; phase1_polyline
Dataset Language
Inventory of semi-natural habitats.
To assess the wildlife importance of semi-natural habitats in Hertfordshire
There are three datasets:
  • Polyline Data file
  • Polygon Data file
  • Georeferenced Raster images
Topic Category
Keyword Value: Natural Habitats
Originating Controlled Volcabulary: Integrated Public Sector Vocabulary (IPSV)
Originating Controlled Volcabulary Citation: Version 2.00 - 2006-05-23

Keyword Value: Habitats and biotopes
Originating Controlled Volcabulary: GEMET - INSPIRE Spatial Data Themes (GEMET)
Originating Controlled Volcabulary Citation: 2008-12-05
Temporal Extent
Dataset Reference Date
Date: 2009-07-24
Date Type: Revision
From November 2013 this data is being maintained by the Hertfordshire Enviormental Records Centre at the Herts and Middlesex Wildlife Trust.

Joint Project with Hertfordshire Biological Records Centre (HBRC) and Herts and Middlesex Wildlife Trust (HMWT).

Phase one habitat mapping from aerial photographs with targeted field surveys. Colour coded maps. Target notes with sketch map and flora records (Habitat Survey Recording Cards).

Habitat mapped on 90 OS 1:10,000 paper maps.

Paper maps digitised using ArcView by Southampton University under contract from HBRC between 2003-2004.

IPR: Ordnance Survey
Product: 1:10,000 Raster
Date: 2009


IPR: Herts and Middlesex Wildlife Trust

IPR: Wildlife Sites Partnership

IPR: Additional IPR may exist in this data, contact for clarification.
Bounding Coordinates
West Bounding Longitude: -0.76
East Bounding Longitude: 0.22
North Bounding Latitude: 52.10
South Bounding Latitude: 51.58
Extent: Hertfordshire
Authority Code: GB-HRT
Vertical Extent Information
Minumum Value:
Maximum Value:
Coordinate reference system:
Spatial Reference System
Spatial Reference System: National Grid of Great Britain
Authority Code: GB
Spatial Resolution
10 metre
Resource Locator
Maps and Geographic Information - Hertfordshire County Council:
Data Format
Name of Format: ESRI/Shape file, ESRI/SDE
Version of the Format: - NOT APPLICABLE -
Responsible Organisation
Hertfordshire County Council - Corporate GIS Team
Role: Distributor
Update Frequency
Limitations on Public Access
Reserved for Hertfordshire Environmental Record Centre use. Access limited to authorised persons only.

Copyright Controlled. Use is subject to licence.

There are restrictions on some information regarding sensitive species (e.g. bats/badgers) - although many of these sites have now been deleted if found to be a record only.
Use Constraints
Licensed under the Public Sector Mapping Agreement;
Hertfordshire County Council's Intellectual Property Rights

You must use the appropriate Copyright Acknowledgement;

For internal use:
©Crown copyright and database rights 2013 Ordnance Survey 100019606.

For external use:
© Crown copyright and database rights 2013 Ordnance Survey 100019606.
You are not permitted to copy, sub-licence, distribute or sell any of this data to third parties in any form.

For Publicly Available Electronic Copies the following must also be added:
The HCC Watermark;
The phrase: "Use of this data is subject to terms and conditions." set out in a legible font and conspicuous position must form a clear hyperlink to

This data is supplied without guarantee or any warranty as to the accuracy, currency or completeness, and is provided as is, excluding any warranties of any kind, either express or implied, to the fullest extent permitted by law, including (but not limited to) satisfactory quality or fitness for a particular purpose.
Additional information source
Unique Resource Identifier
Habitat94to97_Lines, Habitat94to97_Polygons
Resource Type
Specification Name: COMMISSION REGULATION (EC) No 1205/2008 of 3 December 2008 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards metadata
Specification Date: 2008-12-04
Specification Date Type: Publication
Degree: False (Not Conformant)
Explanation: Not xml

Data Specifications for Annex 2 and 3 not confirmed
Metadata Date
Metadata Language
Metadata Point of Contact
Hertfordshire County Council - Corporate GIS Team
Review date
Name Long Name Description
OSGB36 National Grid Bounding Coordinates
West: 486000 East: 552000 North: 245000 South: 189000
More Information

Inventory of semi-natural habitats, maps and field site description sheets with sketch and flora recorded. Habitat mapped on 90 OS maps (scale 1:10,000). Habitat reports include county Wildlife Site descriptions.
Original paper maps probably underestimate neutral grassland required quality check.

Requires quality checking as digitisation has lumped semi-improved and unimproved within the same polygon, some open water sites digitised as unimproved grassland.


( Not currently in a viewer)
( Not currently in SDE)
Original dataset in HBRC file cabinets. Relevant sites copied to site files in cabinets.
Bound District Habitat Survey Reports on shelf in HBRC library.

Change History