Licensing | Hydrionis

Rights classes

Class	Sources	Meaning
Open	22	Reuse, redistribution and derivative use are permitted without restriction beyond the licence terms.
Open — attribution required	106	Reuse, redistribution and derivative use are permitted provided the publisher is credited.
Public but restricted	67	Publicly accessible, but reuse is limited by the publisher terms. May be viewed and cited, but not freely redistributed.
Permission required	4	Explicit permission or a licence from the publisher is required before reuse or redistribution.
Proprietary / paid	2	Commercial product. Hydrionis records that it exists and what it covers, but does not depend on it.

Free and open data first

98.5% of registered sources are free or open, against a design target of roughly 95%. Where a valuable source is paid or permission-restricted, Hydrionis records that it exists and what it covers, identifies open alternatives, and builds equivalent coverage from those instead. 15 sources are currently recorded but deliberately not used on that basis.

Downloads and the API

Rights for public display and rights for redistribution are enforced separately. A value can appear on a page under a source that permits display and citation, while being excluded from a download because that same source does not permit redistribution. The download layer checks the source rights record rather than assuming.

Required attributions

Data from Food and Agriculture Organization of the United Nations, used under CC BY-NC-SA 3.0 IGO.
Data from World Bank, used under CC BY 4.0.
Data from WHO / UNICEF Joint Monitoring Programme for Water Supply, Sanitation and Hygiene, used under CC BY-NC-SA 3.0 IGO.
Data from UN-Water, used under CC BY-NC-SA 3.0 IGO.
Data from World Health Organization, used under CC BY-NC-SA 3.0 IGO.
Data from World Meteorological Organization, used under CC BY-NC-SA 3.0 IGO.
Data from World Resources Institute, used under CC BY 4.0.
Data from United Nations Environment Programme, used under CC BY-NC-SA 3.0 IGO.
Data from UNESCO World Water Assessment Programme, used under CC BY-SA 4.0.
Data from International Groundwater Resources Assessment Centre (UNESCO), used under CC BY 4.0.
Data from Organisation for Economic Co-operation and Development, used under CC BY 4.0.
Data from Eurostat, used under European Commission reuse policy (Decision 2011/833/EU).
Data from Global Runoff Data Centre, Federal Institute of Hydrology (Germany), used under Publisher agreement required.
Data from World Wildlife Fund / McGill University, used under CC BY 4.0.
Data from Global Water System Project, used under CC BY 4.0.
Data from Global Dam Watch consortium, used under CC BY 4.0.
Data from International Water Association, used under Publisher terms — public access, reuse not clearly granted.
Data from World Bank / International Benchmarking Network, used under CC BY 4.0.
Data from Institute for Health Metrics and Evaluation, used under IHME Free-of-Charge Non-commercial User Agreement.
Data from Global Water Intelligence, used under Commercial subscription licence.
Contains modified Copernicus service information.
Data from California Department of Water Resources, used under No reuse licence stated.
Data from European Space Agency Climate Change Initiative, used under CC BY 4.0.
Data from European Commission Joint Research Centre, used under European Commission reuse policy (Decision 2011/833/EU).
Data from OpenStreetMap Foundation, used under Open Database Licence (ODbL) 1.0.
Contains public sector information licensed under the Open Government Licence v3.0.
Data from the UK National River Flow Archive
Contains OS data © Crown copyright and database right. Contains public sector information licensed under the Open Government Licence v3.0.
Data from UK Water Industry Research, used under Publisher terms — public access, reuse not clearly granted.
Data from Water UK, used under Publisher terms — public access, reuse not clearly granted.
Data from Scottish Water, used under Publisher terms — public access, reuse not clearly granted.
Data from Thames Water, used under Publisher terms — public access, reuse not clearly granted.
Data from Severn Trent Water, used under Publisher terms — public access, reuse not clearly granted.
Data from United Utilities, used under Publisher terms — public access, reuse not clearly granted.
Data from Yorkshire Water, used under Publisher terms — public access, reuse not clearly granted.
Data from Anglian Water, used under Publisher terms — public access, reuse not clearly granted.
Data from Southern Water, used under Publisher terms — public access, reuse not clearly granted.
Data from South West Water, used under Publisher terms — public access, reuse not clearly granted.
Data from Wessex Water, used under Publisher terms — public access, reuse not clearly granted.
Data from Northumbrian Water, used under Publisher terms — public access, reuse not clearly granted.
Data from Dŵr Cymru Welsh Water, used under Publisher terms — public access, reuse not clearly granted.
Data from Northern Ireland Water, used under Publisher terms — public access, reuse not clearly granted.
Data from Affinity Water, used under Publisher terms — public access, reuse not clearly granted.
Data from South East Water, used under Publisher terms — public access, reuse not clearly granted.
Data from Portsmouth Water, used under Publisher terms — public access, reuse not clearly granted.
Data from SES Water, used under Publisher terms — public access, reuse not clearly granted.
Data from Bristol Water, used under Publisher terms — public access, reuse not clearly granted.
Data from Cambridge Water, used under Publisher terms — public access, reuse not clearly granted.
Data from South Staffs Water, used under Publisher terms — public access, reuse not clearly granted.
Data from Hafren Dyfrdwy, used under Publisher terms — public access, reuse not clearly granted.
Data from European Environment Agency, used under EEA standard re-use policy.
Data from European Environment Agency, used under European Commission reuse policy (Decision 2011/833/EU).
Data from European Commission, used under European Commission reuse policy (Decision 2011/833/EU).
Data from Publications Office of the European Union, used under European Commission reuse policy (Decision 2011/833/EU).
Data from European Federation of National Associations of Water Services, used under Publisher terms — public access, reuse not clearly granted.
Data from Copernicus Emergency Management Service, used under CC BY 4.0.
Data from International Commission for the Protection of the Rhine, used under Publisher terms — public access, reuse not clearly granted.
Data from International Commission for the Protection of the Danube River, used under Publisher terms — public access, reuse not clearly granted.
Data from OSPAR Commission, used under CC BY-SA 4.0.
Data from Eaufrance / Office français de la biodiversité, used under Licence Ouverte / Open Licence 2.0 (Etalab).
Datenquelle: Bayerisches Landesamt für Umwelt, www.lfu.bayern.de
Data from Umweltbundesamt, used under CC BY 4.0.
Data from Statistisches Bundesamt, used under Datenlizenz Deutschland – Namensnennung 2.0.
Data from Ministerio para la Transición Ecológica y el Reto Demográfico, used under Spanish public sector reuse (Ley 37/2007).
Data from Istituto Superiore per la Protezione e la Ricerca Ambientale, used under CC BY 4.0.
Data from Istituto Nazionale di Statistica, used under CC BY 4.0.
Data from Centraal Bureau voor de Statistiek, used under CC BY 4.0.
Data from Sveriges meteorologiska och hydrologiska institut, used under CC BY 4.0.
Data from Norges vassdrags- og energidirektorat, used under Norsk lisens for offentlige data (NLOD).
Data from Suomen ympäristökeskus, used under CC BY 4.0.
Data from Danmarks Miljøportal, used under CC BY 4.0.
Data from Bundesamt für Umwelt, used under CC BY 4.0.
Data from Bundesministerium für Land- und Forstwirtschaft, Regionen und Wasserwirtschaft, used under CC BY 4.0.
Data from Agência Portuguesa do Ambiente, used under European Commission reuse policy (Decision 2011/833/EU).
Contains data from the Norwegian Water Resources and Energy Directorate (NVE), licensed under the Norwegian Licence for Open Government Data (NLOD).
Contains data from the Institute of Meteorology and Water Management — National Research Institute (IMGW-PIB).
Contains data from the Finnish Environment Institute (Syke), licensed under CC BY 4.0.
Contains Irish Public Sector Information licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence (source http://waterlevel.ie — provided by the Office of Public Works).
Data from Office of Public Works, used under Publisher terms — public access, reuse not clearly granted.
Data from Environmental Protection Agency Ireland, used under CC BY 4.0.
Data from Instytut Meteorologii i Gospodarki Wodnej, used under CC BY 4.0.
Data from Český hydrometeorologický ústav, used under Publisher terms — public access, reuse not clearly granted.
Data from Hellenic Ministry of Environment and Energy, used under Publisher terms — public access, reuse not clearly granted.
Data from Vlaamse Milieumaatschappij, used under CC BY 4.0.
Data from Administrația Națională Apele Române, used under Publisher terms — public access, reuse not clearly granted.
Data from Országos Vízügyi Főigazgatóság, used under Publisher terms — public access, reuse not clearly granted.
Data from Veðurstofa Íslands, used under CC BY 4.0.
Data from Devlet Su İşleri, used under Publisher terms — public access, reuse not clearly granted.
Source: Hub’Eau / Système d’information sur l’eau, under Licence Ouverte (Etalab).
Data from National Drought Mitigation Center, University of Nebraska–Lincoln, used under CC BY 4.0.
Data from Environment and Climate Change Canada, used under Open Government Licence – Canada.
Data from Health Canada, used under Open Government Licence – Canada.
Data from Agência Nacional de Águas e Saneamento Básico, used under CC BY 4.0.
Data from Comisión Nacional del Agua, used under Publisher terms — public access, reuse not clearly granted.
Data from Dirección General de Aguas, used under Publisher terms — public access, reuse not clearly granted.
Data from Instituto Nacional del Agua, used under Publisher terms — public access, reuse not clearly granted.
Data from Servicio Nacional de Meteorología e Hidrología del Perú, used under CC BY 4.0.
Data from Instituto de Hidrología, Meteorología y Estudios Ambientales, used under CC BY 4.0.
Data from Bureau of Meteorology, used under CC BY 4.0.
Data from National Health and Medical Research Council, used under CC BY 4.0.
Data from Murray–Darling Basin Authority, used under CC BY 4.0.
Data from Land, Air, Water Aotearoa, used under CC BY 4.0.
Data from Central Water Commission, used under Government Open Data License – India.
Data from Central Ground Water Board, used under Government Open Data License – India.
Data from Ministry of Water Resources of the People’s Republic of China, used under Publisher terms — public access, reuse not clearly granted.
Data from Ministry of Land, Infrastructure, Transport and Tourism, used under Publisher terms — public access, reuse not clearly granted.
Data from PUB, Singapore’s National Water Agency, used under Publisher terms — public access, reuse not clearly granted.
Data from Korea Water Resources Corporation, used under Publisher terms — public access, reuse not clearly granted.
Data from Ministry of Public Works and Housing, used under Publisher terms — public access, reuse not clearly granted.
Data from Mekong River Commission, used under Publisher terms — public access, reuse not clearly granted.
Data from Department of Water and Sanitation, used under Publisher terms — public access, reuse not clearly granted.
Data from Ministry of Water Resources and Irrigation, used under Publisher terms — public access, reuse not clearly granted.
Data from Water Resources Authority, used under Publisher terms — public access, reuse not clearly granted.
Data from Water Services Regulatory Board, used under Publisher terms — public access, reuse not clearly granted.
Data from Nigeria Hydrological Services Agency, used under Publisher terms — public access, reuse not clearly granted.
Data from Ministère de l’Équipement et de l’Eau, used under Publisher terms — public access, reuse not clearly granted.
Data from Saudi Water Authority, used under Publisher terms — public access, reuse not clearly granted.
Data from Israel Water Authority, used under Publisher terms — public access, reuse not clearly granted.
Data from Ministry of Climate Change and Environment, used under Publisher terms — public access, reuse not clearly granted.
Data from African Development Bank, used under CC BY-NC-SA 3.0 IGO.
Data from International Association for the Properties of Water and Steam, used under Publisher terms — public access, reuse not clearly granted.
Data from International Agency for Research on Cancer, used under CC BY-NC-SA 3.0 IGO.
Data from European Food Safety Authority, used under CC BY 4.0.
Data from National Academies of Sciences, Engineering, and Medicine, used under Publisher terms — public access, reuse not clearly granted.
Data from NSF International / American National Standards Institute, used under Publisher terms — public access, reuse not clearly granted.
Data from American Water Works Association, used under Publisher terms — public access, reuse not clearly granted.
Data from International Organization for Standardization, used under ISO copyright — standards sold per document.
Data from Water Footprint Network, used under CC BY 4.0.
Data from International Energy Agency, used under Publisher terms — public access, reuse not clearly granted.
Data from International Renewable Energy Agency / academic literature, used under CC BY 4.0.
Data from CDP, used under Publisher agreement required.
Data from Individual corporations, used under Publisher terms — public access, reuse not clearly granted.
Data from Uptime Institute, used under Commercial subscription licence.
Data from Peer-reviewed scientific literature, used under Publisher terms — public access, reuse not clearly granted.