Northern Ireland River Basin District's (RBD)'s defined for the implementation of the Water Framework 2nd cycle. Each RBD contains all waterbodies within a specific region, both land and sea. The spatial division is based on terrestrial catchments grouped as best fit watersheds. Published in July 2016 this layer was submitted as part of Water Framework Directive reporting at the time and continues to be used to defining Northern Ireland's water bodies for management purposes. The layer replaced the 1st Cycle 2009 version and has been clipped at the Border with the Republic of Ireland. No further revisions are planned.

The European Water Framework Directive was transposed to national legislation through the Water Environment (Water Framework Directive) Regulations (Northern Ireland) 2017. The Water (Amendment) (Northern Ireland) (EU Exit) Regulations 2019 ensures that the Water Framework Directive (WFD) (as transposed) and the various supporting pieces of water legislation remain implemented in Northern Ireland as National legislation.

The Water Environment (Water Framework Directive) Regulations (Northern Ireland) 2017. The Water (Amendment) (Northern Ireland) (EU Exit) Regulations 2019 ensures that the Water Framework Directive (WFD) (as transposed) and the various supporting pieces of water legislation are implemented in Northern Ireland. The legislation defines 6 year cycles of monitoring and action to improve or maintain environmental water quality standards.Water bodies are the basic management units for monitoring, reporting and assessing compliance with the Water Environment Regulations' environmental objectives. For the 2nd cycle (2016-2021) 571 water bodies were identified in Northern Ireland, of these 496 are surface water bodies: including 450 rivers, 21 lakes, and 25 transitional and coastal waters (Marine); the remaining 75 are groundwater bodies.This layer displays the river waterbody boundaries based on surface water flow hydrological units. This is a 2016 2nd cycle revision of the earlier 2009 1st cycle hydrological unit split. Future revisions are not planned.

Introduction

The Strategic Flood Map (Surface Water) map service is a multi layered predictive flood mapping product providing a strategic overview of areas across Northern Ireland that could be affected by surface water flooding. The Strategic Flood Map (Surface Water) includes the following layers of information for present day epoch: • Floods with a medium probability

Purpose of the data

The dataset has been designed to raise awareness among the public, Government Departments, local authorities and other organisations of the likelihood of surface water flooding, thus supporting a more proactive and co-operative approach to flood risk management. By being aware of the land estimated to be at risk of flooding, authorities can develop strategies to better manage flood risk through their planning, flood prevention, and emergency planning functions.

Data Coverage

All of Northern Ireland, with some limited coverage in Republic of Ireland in border areas.

Data Format

OGC (Open Geospatial Consortium) compliant Web Mapping Service in WGS 1984 projection, accessible via secure website (requires authentication by user specific username and password).

Data content

Strategic Surface Water Floodplain (Present Day) o Medium Probability (1 in 200 year rainfall event)

Terrain (DTM) & Surface (DSM) elevation models of river basins derived from airborne LIDAR survey systems. A Digital Terrain Model (DTM) is a digital file consisting of a grid of regularly spaced points of known height which, when used with other digital data such as maps or orthophotographs, can provide a 3D image of the land surface. This data is typically provided in tiles of 1km x 1km, each containing elevations in a 1m x 1m grid. Tiles are grouped and can be downloaded by area as shown on the index ‘River Basin LIDAR-Coverage Map’. Data acquired in 2009 & 2010 also contains Point Cloud files, a closely spaced (0.2m) irregular grid of elevations from which the 1m x1m grids were derived. By download or use of this dataset you agree to abide by the Open Government Data Licence. This data is not a supported LPS product, supporting documentation has been provided to assist / offer guidance on the data itself.

Rivers Agency- An agency within the Department of Agriculture and Rural Development

In 2020, with generous funding from the National Lottery Heritage Fund, Ulster Wildlife, National Trust NI, RSPB NI and Woodland Trust NI came together to start building capacity to deliver Nature Recovery Networks in Northern Ireland. As part of the project, habitat networks maps were produced for all terrestrial and intertidal priority habitats, based on the Natural England (Edwards et al., 2020) methodology. The habitat networks comprise vector datasets that map areas of land into different network categories, based on how favourable the land is for restoration to, or creation of the priority habitat, and how effective actions in each area would be at enhancing connectivity of the priority habitat, based on proximity to existing habitat patches. A description of these network categories is provided in Table 1 in the methodology report, available at https://www.ulsterwildlife.org/sites/default/files/2022-10/EnvSys%20NI%20NRN%20mapping%20report.pdf. The habitat network maps do not represent a fully comprehensive depiction of land cover, nor do they provide specific land management options and do not therefore replace the need for an on-site ecological surveys/appraisals. The maps are intended to function as a decision-support tool alongside other pieces of information, both from on-site surveys and data from other sources.

This map highlights 8962 stations with monthly discharge data, including data derived daily up to 20 December 2013. The GRDB (Global Runoff DataBase) is built on an initial dataset collected in the early 1980s from the responses to WMO (World Meteorological Organization request to its member countries to provide a global hydrological data set to complement a specific set of atmospheric data in the framework of the First Global GARP Experiment (FCGE). The initial dataset of monthly river discharge data over a period of several years around 1980 was supplemented with the UNESCO monthly river discharge data collection 1965-85. Today the database comprises discharge data of nearly 9.000 gauging stations from all over the world. Since 1993 the total number of station-years has increased by a factor of around 10.Credits and partnerships:OSU - College of Earth, Ocean and Atmospheric SciencesCarniege Corporation of New YGloabl orkNASCE - Northwest Alliance for Computational Science & EngineeringInternational Water Management InstituteUNESCO - United Nations Educational, Scientific and Cultural OrganisationUSGS - United States Geological Survey

This is a web map view service for the Integrated Hydrological Units (IHU) of the United Kingdom. The IHU define geographical reference units for hydrological purposes including river flow measurement and hydrometric data collection in the UK. The layers in this service represent the following component polygon layers: Hydrometric Areas with Coastline; Hydrometric Areas without Coastline; Groups; Sections; and Catchments. Each layer represents a different level of spatial detail. The coarsest level, Hydrometric Areas, is provided in two versions to meet differing user needs. Each Hydrometric Area is made up of one or more Groups. Each Group carries a name constructed from names of the major river flowing through the Group, the major river flowing into the Group, the major river into which the Group flows, and in some cases also from local county names. Each Group is made up of smaller units called Sections. A Section is the drainage area of a watercourse between two confluences. Only confluences of named watercourses were considered. Similarly to Groups, each Section carries a name constructed from names of the major river flowing through the Section, the major river flowing into the Section, and the major river into which the Section flows. Catchments represent the full area upstream from an outlet of every Section. Polygons within each layer do not have gaps and, with the exception of Catchments, polygons within one layer do not overlap. There are scale dependencies on this web map service which means that the Sections and Catchments layers are visible only at scales less than 1:250,000. The Hydrometric Areas with Coastline layer covers Great Britain and Northern Ireland, but all other layers currently cover Great Britain only as no dataset with river geometries and names with suitable detail is available for Northern Ireland.

This table provides the raw data from river monitoring sites including Water Framework Directive monitoring sites. It should be noted that, as the data set is in its raw state, it cannot be used to provide a status without processing. The data set does not show Limits of Detection or Limit of Quantitation which would require a value to be treated as a half value for WFD calculation. In addition both altitude and alkalinity affect status calculations for some parameters. The data set may contain results which are erroneous due to typos, sampling error or contamination, such data points are usually several orders or magnitude above expected values.This is the first in a series of water data sets being made available as Open Data. Other data sets remain available on request via waterinfo@daera-ni.gov.ukThe European Water Framework Directive (2000/60/EC) has been transposed into Northern Ireland regulations through The Water Environment (Water Framework Directive) Regulations (Northern Ireland) 2017. The Water (Amendment) (Northern Ireland) (EU Exit) Regulations 2019 ensures that the Water Framework Directive (WFD) (as transposed) and the various supporting pieces of water legislation continue to operate here after 1 January 2021. The regulation encourage the active involvement of interested parties and the general public.The regulations set out the requirement to achieve 'Good Ecological Status' and 'Good Chemical Status' for all ground and surface waters (rivers, lakes, transitional waters, and coastal waters) within Northern Ireland.Surface waters are assessed according to the following criteria:Biological quality (fish, invertebrates, flora)HydromorphologicalPhysico-chemical properties like temperature, oxygenation and nutrient conditions.Chemical quality assessed against environmental quality standards for specific pollutants and priority substances.The following physio-chemical and chemical parameters are included in the data set:FESOL1(ug/l)- Iron Dissolved

GEMS/Water water quality dashboard river basin map. The map shows country-level indicators for pH, dissolved oxygen, nitrogen and phosphorus. Classification and treshholds for the indicator are derived from UNEP (2017).ReferenceUNEP, 2017. A Framework for Freshwater Ecosystem Management. Volume 2: Technical guide for classification and target-setting.Available under: https://www.unenvironment.org/resources/publication/framework-freshwater-ecosystem-managementDISCLAIMERS:The designations employed and the presentation of material on this map do not imply the expression of any opinion whatsoever on the part of the Secretariat of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.Final boundary between the Republic of Sudan and the Republic of South Sudan has not yet been determined.Final status of the Abyei area is not yet determined.* Dotted line represents approximately the Line of Control in Jammu and Kashmir agreed upon by India and Pakistan. The final status of Jammu and Kashmir has not yet been agreed upon by the parties.** Chagos Archipelago appears without prejudice to the question of sovereignty.*** A dispute exists between the Governments of Argentina and the United Kingdom of Great Britain and Northern Ireland concerning sovereignty over the Falkland Islands (Malvinas).