Nitrate Vulnerable Zones (NVZ)
AfA 169
Nitrate Vulnerable Zones (NVZs) are areas within Wales that contain surface water or groundwater that is susceptible to nitrate pollution from agricultural activities. They are designated in accordance with the requirements of the European Commision's Nitrates Directive 91/676/EEC, which aims to protect water quality across Europe by preventing nitrates from agricultural sources polluting ground and surface waters and by promoting the use of good farming practices. The Welsh Government is responsible for maintaining and improving the quality of the aquatic environment, and carries out a review of the NVZ areas every four years.
dataset
http://lle.gov.wales/catalogue/item/NitrateVulnerableZonesNVZ/?lang=en
http://lle.gov.wales/services/wms/nrw?
116240
https://naturalresources.wales
eng
OGP
urn:ogc:def:crs:EPSG::OSGB36
inlandWaters
Land use
publication
2018-10-26
-5.77774100
-2.60886500
53.51306700
51.24082900
publication
2018-10-26
Wales (WLS)
2008-01-01
2013-01-01
publication
2017-01-12
asNeeded
The Nitrate Vulnerable Zone boundaries were delineated using a Geographical Information System. The first step was to look at the previous NVZ boundaries and compare them with ground water body data from BGS. This information was used to produce a first draft of the new boundaries, which were then clipped to field boundaries and put out to consultation. Following responses from the consultation, amendments were made to the boundaries which also considered estimated borehole catchments. Next, boundaries were re-adjusted to field boundaries and the mean high water spring tide mark (unless fields fell below the mean high water spring tide mark).
Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and copyright of the owners. It is the recipient's responsibility to ensure the data is fit for the intended purpose. Attribution Statement: © CNC/NRW All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number 100019741. Crown Copyright and Database Right
There are no access restrictions on this data. NRW may release, publish or disseminate it freely.
Natural Resources Wales (NRW)
0300 065 3000
enquiries@naturalresourceswales.gov.uk
owner
Natural Resources Wales (NRW)
0300 065 3000
enquiries@naturalresourceswales.gov.uk
originator
Natural Resources Wales (NRW)
0300 065 3000
enquiries@naturalresourceswales.gov.uk
pointOfContact
2018-10-22