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UK Water Quality Sampling Harmonised Monitoring Scheme Detailed Data

The Historic UK Water Quality Sampling Harmonised Monitoring Scheme (HMS) dataset contains individual determinand results for all sites in the UK Harmonised Monitoring Scheme network from...

Phase 2 Upland Vegetation Surveys of Wales (1999 - 2008)

This dataset contains both the non-spatial and spatial (GIS) outputs from a vegetation surveys of upland Sites of Special Scientific Interest (SSSIs) in Wales to National Vegetation...

Tranquillity and Place: Visually Tranquil Areas

A nationally consistent terrestrial Tranquillity & Place resource that identifies visually tranquil areas for use as an evidence base to inform policy intent, practice and provision for...

Flood Defence Structures

The National Flood Asset Database records flood infrastructure in Wales managed by Lead Local Flood Authorities (LLFAs) and Natural Resources Wales (NRW). It includes many embankments,...

Compliance Assessment of Welsh River SACs against Phosphorus Targets

Revisions to Joint Nature Conservation Committee (JNCC) monitoring guidance have required Natural Resources Wales (NRW) to review its conservation objectives for river Special Areas of...

Materials Facilities Reporting

This displays the quarterly Operator reported, input and output sampling data that qualifying Materials Facilities are required to provide by the regulations. This excludes additional...

Industrial and Commercial Waste Survey Wales 2018

The purpose of this study was to produce information on the quantities, origins (by industry sector and geographic region), and fate (management method) of industrial & commercial (I and...

National Flood Hazard Maps 2019

The National Flood Hazard and Risk Maps are based on generalised modelling only. The maps have been published to comply with the Flood Risk Regulations (2009) and the EU Directive...

River Wye catchment (Wales) species rich grassland creation opportunity maps

A detailed GIS analysis of land use, Phase 1 habitats, National Vegetation Classification (NVC) community data, soils and designated sites for the River Wye catchment within the NRW...

Special Areas of Conservation (SAC) and Special Protection Areas (SPA) Monitoring Programme Results 2013-2018

Special Areas of Conservation (SACs) and Special Protection Areas (SPAs) are protected and designated sites under the EC Habitats and Birds Directives. The Directives list habitat types and...

Historic General Quality Assessment (GQA) Headline Indicators of Water Courses

The General Quality Assessment (GQA) Headline Indicator scheme or GQAHI (previously known as GQA) was the national indicator for water quality in rivers and canals. It was designed to...

Water Framework Directive (WFD) Risk Assessments for Cycle 2

This dataset contains risk assessment data produced to support the cycle 2 river basin management plans. It contains - Lake water bodies - River water bodies - Transitional water...

Surface Water Temperature Archive up to 2007

Water temperature data is collected for different reasons and in different locations. Time series of surface water temperatures can provide indicators of climate change and associated...

UK Water Quality Sampling Harmonised Monitoring Scheme Summary Data

The Historic UK Water Quality Sampling Harmonised Monitoring Scheme (HMS) data contains statistics for a series of water quality sampling sites including annual means, maximum and minimum...

Historic River Quality Objectives

The River Quality Objectives (RQO) classification was used for planning water quality improvements until 2006 when the scheme ended. The national RQO classification scheme ceased at the end...

Large Raised Reservoirs

This dataset has been discontinued. Please see the datasets - Large Raised Reservoir register (Locations and undertakers) and Large Raised Reservoir (Registered information) which have...

Risk of Flooding from Surface Water

The surface water flood maps give an indication of the broad areas likely to be at risk of surface water flooding. This includes flooding that takes place from the surface runoff generated...

Risk of Flooding from Rivers and Seas (RoFRS)

This is a national assessment of flood risk for Wales produced using local expertise. The dataset shows the chance of flooding from rivers and/or the sea, based on cells of 50 m. Each cell...

Nitrate Vulnerable Zones (NVZ)

Nitrate Vulnerable Zones (NVZs) were areas within Wales that contain surface water or groundwater that is susceptible to nitrate pollution from agricultural activities. They were designated...

Source Protection Zones (SPZ) Merged

Source Protection Zones [Merged] have been created as public facing boundaries where individual groundwater bodies within Source Protection Zones (SPZ) have been dissolved so only the outer...