Data

Waterbase - Lakes

Data

Prod-ID: DAT-9-en

Created 07 Jul 2014 Published 07 Jul 2014 Last modified 15 Dec 2022

19 min read

This page was archived on 05 Dec 2016 with reason: Other (The dataset is replaced by Waterbase - Water Quality dataset, which combines Waterbase - Rivers, Lakes and Groundwater into one. It's available at http://www.eea.europa.eu/data-and-maps/data/waterbase-water-quality/.)

Waterbase is the generic name given to the EEA's databases on the status and quality of Europe's rivers, lakes, groundwater bodies and transitional, coastal and marine waters, and on the quantity of Europe's water resources

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Waterbase - Lakes (6 tables)

The dataset contains data on nutrients, organic matter, hazardous substances and other chemical determinands in water, proxy pressure data on the upstream catchments, physical characteristics of the WISE-SoE lake monitoring stations and biological quality elements (BQEs) phytobenthos and macroinvertebrates from WISE-SoE river monitoring stations. The biological data data are reported as ecological quality ratios (EQRs) (for more explanation, see illustration in additional information part). ***WARNING:*** Records, where errors and other quality issues and inconsistencies have been detected, have been removed from the dataset only in the most severe cases (missing primary key values, duplicates...). The other "problematic" records are left in. Each data table contains a set of special QA fields which are used to flag the particular quality issues detected in the individual records. The QA fields and flag codes are described in the QA documentation.

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Physical Characteristics of Lake Monitoring Stations (Waterbase_Lakes_v14_Stations, 4671 records)

Physical characteristics of the WISE-SoE lake monitoring stations.

FieldName	Definition	Note	DataType
RecordID	Unique record identifier		long
RecordReported	Date when the records was reported by the data provider		text(10)
CountryCode	Abbreviation of EEA Member or Collaborating Country from which territory the data come from.	ISO 3166-1-alpha-2 code elements	text(2)
WaterbaseID	Internally produced, unique Waterbase identifier	combination of CountryCode, '_LK_' and NationalStationID	text(100)
NationalStationID	Identifier of the lake monitoring station, unique at the national level.		text(100)
NationalStationName	National name of the monitoring station		text(150)
WFDstation	Specification yes / no, whether the monitoring station was reported to European Commission as Water Framework Directive, Article 8 monitoring station.		text(3)
WFD_EU_CD	Unique international identifier of the monitoring station under which the station was reported as WFD Art.8 monitoring station.		text(50)
LakeName	Name of lake.		text(150)
WaterCategory	Water Category, as defined in the codelist.		text(2)
WaterBodyID	National identification code of water body in which station is located		text(50)
WaterBodyName	Name of water body in which station is located.		text(255)
CatchmentName	Name of major catchment or basin.		text(150)
RBDcode	River Basin District Code		text(50)
RBDcode_original	River Basin District Code		text(50)
RBDname	Name of the River Basin District.		text(150)
Region	National region in which water body is located		text(50)
Longitude	International geographical longitude (x) co-ordinate in decimal degrees format.		decimal
Latitude	International geographical latitude (x) co-ordinate in decimal degrees format.		decimal
CatchmentArea	Catchment area upstream of the station, in kilometres squared.		single
Altitude	Altitude of station in metres above sea level.		single
RepresentativeStation	Station is representative, reflecting general quality of rivers/lakes/transitional or coastal water bodies or marine water areas.		text(1)
ReferenceStation	Station is reference station - found in catchments or associated River Basin Districts with little or no human activity, natural landscape higher than 90%, and minimally impacted by inflow from adjacent coastal or marine waters.		text(1)
ImpactStation	Station is impact station - located within the zone where initial mixing of discharges takes place with receiving waters.		text(1)
LargestStation	Station is largest station - most important station, including the nationally most important or well known rivers or lakes.		text(1)
Geology	The dominnt geology in the catchment, given according to the WFD Annex 2 categories.	siliceous, calcareous, organic (peat)	text(50)
WaterColourAverage	Long-term average concentration of water colour, expressing the concentration of humic substances at the station.		single
WaterColourLevel	Average level of water colour as defined by the WFD intercalibration typology.	low (90 mg/l Pt = polyhumic).	text(8)
AlkalinityAverage	Long-term average of alkalinity of water at the station		single
AlkalinityLevel	Long-term average level of alkalinity as defined by the WFD intercalibration typology.	low alk. (1 meq/L)	text(8)
HMWB	River/Lake is identified as heavily modified in terms of hydromorphological impacts, such as impoundments and high water level fluctuations, according to WFD-compliant national guidelines		text(1)
ArtificialWB	Station is located in an artificial water body, (e.g. artificial water reservoir) in terms of hydromorphological impacts, such as impoundments and high water level fluctuations, according to WFD-compliant national guidelines.		text(1)
Purpose	The purpose of the monitoring station in terms of to which directives, conventions or agreements will the data from the station be used for reporting.		text(255)
Location	Location of the lake monitoring site.		text(150)
SurfaceArea	Surface area of lake in square kilometres.		single
MeanDepth	Mean depth of the lake in metres.		single
MaximumDepth	Maximum depth of the lake in metres.		single
ResidenceTime	Average lake residence time in years.		single
Volume	Volume of water in lake in million cubic metres.		single
Reservoir	Reservoir or natural lake.	Y - reservoir, N - natural lake	text(1)
SamplingDepth	Depth at which sample taken in metres below the lake surface.		text(20)
Remarks	Remarks, comments or explanatory notes		text(255)
QA_station_issues	Quality assessment field - stations data quality issues flag	List of codes of station data issues detected in the record. Details are explained in the QA documentation.	text(100)
QA_DDviolations	Quality assessment field - data definition errors	List of field names and their values where values that do not follow the official specifications. Details are explained in the QA documentation.	memo

Proxy Pressures of Lakes (Waterbase_Lakes_v14_Pressures, 2329 records)

Proxy pressure data on the upstream catchments of WISE-SoE lake monitoring stations.

FieldName	Definition	Note	DataType
RecordID	Unique record identifier		long
RecordReported	Date when the records was reported by the data provider		text(10)
CountryCode	Abbreviation of EEA Member or Collaborating Country from which territory the data come from.	ISO 3166-1-alpha-2 code elements	text(2)
WaterbaseID	Internally produced, unique Waterbase identifier	combination of CountryCode, '_LK_' and NationalStationID	text(100)
NationalStationID	Identifier of the lake monitoring station, unique at the national level.		text(100)
PopulationDensity	Population density of the upstream catchment of the river monitoring station		single
UWWT	Point source pressure from urban waste water treatment discharges.		text(1)
OverflowsDischarges	Point source pressure from overflows and urban discharges.		text(1)
IPPC	Point source pressure from IPPC installations.		text(1)
nonIPPC	Point source pressure from non-IPPC installations		text(1)
Fertiliser	Diffuse sources pressures from agricultural fertiliser use.		text(1)
Pesticide	Diffuse sources pressures from agricultural pesticide use.		text(1)
Livestock	Diffuse sources pressures from livestock.		text(1)
TransportInfrastructure	Diffuse sources pressures from transport and infrastructure without connection to sewers.		text(1)
PublicWaterSupply	Water abstractions pressures due to public water supply.		text(1)
Industry	Water abstractions pressures due to industry.		text(1)
Irrigation	Water abstractions pressures due to irrigation.		text(1)
Cooling	Water abstractions pressures due to needs for cooling water, e.g. for nuclear power plants or other industrial activities.		text(1)
WaterFlowRegulation	Water flow regulation and morphological alterations.		text(50)
Remarks	Remarks, comments or explanatory notes		text(255)
QA_station_issues	Quality assessment field - stations data quality issues flag	List of codes of station data issues detected in the record. Details are explained in the QA documentation.	text(100)
QA_DDviolations	Quality assessment field - data definition errors	List of field names and their values where values that do not follow the official specifications. Details are explained in the QA documentation.	memo

Nutrients and General Physico-Chemical Determinands in Lakes (Waterbase_Lakes_v14_Nutrients, 383763 records)

Data on nutrients and organic matter in water measured at WISE-SoE lake monitoring stations.

FieldName	Definition	Note	DataType
RecordID	Unique record identifier		long
RecordReported	Date when the records was reported by the data provider		text(10)
CountryCode	Abbreviation of EEA Member or Collaborating Country from which territory the data come from.	ISO 3166-1-alpha-2 code elements	text(2)
WaterbaseID	Internally produced, unique Waterbase identifier	combination of CountryCode, '_LK_' and NationalStationID	text(100)
NationalStationID	Identifier of the lake monitoring station, unique at the national level.		text(100)
Year	Year of aggregation period in which samples were taken/Year in which sample was taken.		long
AggregationPeriod	Period of aggregation of measurement data.		text(20)
AggregationPeriod_original			text(100)
AggregationMonths	Detailed specification of aggregation period by months.		text(150)
AggregationLength	Number of months in aggregation period.		long
Determinand_Nutrients	Name of nutrient, organic matter or general physico-chemical determinand.		text(50)
Unit_Nutrients	Unit of measurement of nutrients or organic matter.		text(7)
CEN_ISO	CEN/ISO code of the methods.		text(150)
NumberOfSamples	Number of samples included in aggregated data.		long
LimitOfQuantification	The smallest concentration that can be distinguished from the analytical blank at a chosen level of statistical confidence (usually 95%).		single
Minimum	Minimum disaggregated sample concentration value of the input data used for aggregation.		single
Mean	Mean concentration value of aggregated data.		single
Maximum	Maximum disaggregated sample concentration value of the input data used for aggregation.		single
Median	Median concentration value of aggregated data.		single
StandardDeviation	Standard deviation of concentration values of aggregated data.		single
SampleDepth	Depth at which sample taken in metres below water surface.		decimal
TotalDepth	Total depth of water column at the sampling location and at the time of sampling (in meters).		single
NoOfSubsites	Number of subsites		long
MethodSubsitesSpatialAggreg	Method of subsite aggregation - if several subsites across the water body profile are joined into one monitoring station.		text(255)
Remarks	Remarks, comments or explanatory notes		text(255)
AggregatedBy	Subject(s) that aggregated the data.		text(20)
QA_MVissues	Quality assessment field - main meassurement value issue flag.	A code identifying an issue or an error in the main meassurement value of the record. Details are explained in the QA documentation.	long
QA_LRviolations	Quality assessment field - list of logical rules violations.	List of codes of logical rules violated by record. Details are explained in the QA documentation.	text(150)
QA_outlier	Quality assessment field - outlier flag.	Outlier code assigned to the record. Details are explained in the QA documentation.	long
QA_CRviolations	Quality assessment field - list of chemical rules violations.	List of codes of chemical rules violated by record. Details are explained in the QA documentation.	text(150)
QA_station_issues	Quality assessment field - stations data quality issues flag	List of codes of station data issues detected in the record. Details are explained in the QA documentation.	text(100)
QA_DDviolations	Quality assessment field - data definition errors	List of field names and their values where values that do not follow the official specifications. Details are explained in the QA documentation.	memo

Hazardous Substances and Other Chemical Determinands in Lakes (Waterbase_Lakes_v14_HazSubs, 111358 records)

Data on hazardous substances and other chemical determinands in water measured at WISE-SoE lake monitoring stations.

FieldName	Definition	Note	DataType
RecordID	Unique record identifier		long
RecordReported	Date when the records was reported by the data provider		text(10)
CountryCode	Abbreviation of EEA Member or Collaborating Country from which territory the data come from.	ISO 3166-1-alpha-2 code elements	text(2)
WaterbaseID	Internally produced, unique Waterbase identifier	combination of CountryCode, '_LK_' and NationalStationID	text(100)
NationalStationID	Identifier of the lake monitoring station, unique at the national level.		text(100)
Year	Year of aggregation period in which samples were taken/Year in which sample was taken.		long
Determinand_HazSubs	Name of hazardous substance or other chemical determinand.		text(150)
Unit_HazSubs	Unit of measurement of hazardous substance.		text(20)
CASNumber	Chemical Abstract Service Number of the hazardous substance or other chemical determinand.		text(64)
CEN_ISO	CEN/ISO code of the methods.		text(150)
NumberOfSamples	Number of samples included in aggregated data.		long
NumberOfSamplesBelowLOQ	Number of samples below limit of quantification within aggregation period		long
LimitOfQuantification	The smallest concentration that can be distinguished from the analytical blank at a chosen level of statistical confidence (usually 95%).		single
Minimum	Minimum disaggregated sample concentration value of the input data used for aggregation.		single
Mean	Mean concentration value of aggregated data.		single
Maximum	Maximum disaggregated sample concentration value of the input data used for aggregation.		single
Median	Median concentration value of aggregated data.		single
StandardDeviation	Standard deviation of concentration values of aggregated data.		single
SampleDepth	Depth at which sample taken in metres below water surface.		decimal
NoOfSubsites	Number of subsites		long
MethodSubsitesSpatialAggreg	Method of subsite aggregation - if several subsites across the water body profile are joined into one monitoring station.		text(255)
Remarks	Remarks, comments or explanatory notes		text(255)
AggregatedBy	Subject(s) that aggregated the data.		text(20)
QA_MVissues	Quality assessment field - main meassurement value issue flag.	A code identifying an issue or an error in the main meassurement value of the record. Details are explained in the QA documentation.	long
QA_LRviolations	Quality assessment field - list of logical rules violations.	List of codes of logical rules violated by record. Details are explained in the QA documentation.	text(150)
QA_station_issues	Quality assessment field - stations data quality issues flag	List of codes of station data issues detected in the record. Details are explained in the QA documentation.	text(100)
QA_DDviolations	Quality assessment field - data definition errors	List of field names and their values where values that do not follow the official specifications. Details are explained in the QA documentation.	memo

Supportive Determinands for hazardous substances in Lakes (Waterbase_Lakes_v14_SuppDet, 60505 records)

Data on supportive determinands, supplementing information on hazardous substances in water measured at WISE-SoE lake monitoring stations.

FieldName	Definition	Note	DataType
RecordID	Unique record identifier		long
RecordReported	Date when the records was reported by the data provider		text(10)
CountryCode	Abbreviation of EEA Member or Collaborating Country from which territory the data come from.	ISO 3166-1-alpha-2 code elements	text(2)
WaterbaseID	Internally produced, unique Waterbase identifier	combination of CountryCode, '_LK_' and NationalStationID	text(100)
NationalStationID	Identifier of the lake monitoring station, unique at the national level.		text(100)
Year	Year of aggregation period in which samples were taken/Year in which sample was taken.		long
Determinand_Supportive	Name of supportive determinand, that is needed for correct interpretation of some hazardous substances.		text(20)
Unit_DetSupport	Unit of measurement of hazardous substances supportive determinands.		text(20)
NumberOfSamples	Number of samples included in aggregated data.		long
Minimum	Minimum disaggregated sample concentration value of the input data used for aggregation.		single
Mean	Mean concentration value of aggregated data.		single
Maximum	Maximum disaggregated sample concentration value of the input data used for aggregation.		single
Median	Median concentration value of aggregated data.		single
StandardDeviation	Standard deviation of concentration values of aggregated data.		single
AggregatedBy	Subject(s) that aggregated the data.		text(20)
QA_MVissues	Quality assessment field - main meassurement value issue flag.	A code identifying an issue or an error in the main meassurement value of the record. Details are explained in the QA documentation.	long
QA_outlier	Quality assessment field - outlier flag.	Outlier code assigned to the record. Details are explained in the QA documentation.	long
QA_station_issues	Quality assessment field - stations data quality issues flag	List of codes of station data issues detected in the record. Details are explained in the QA documentation.	text(100)
QA_DDviolations	Quality assessment field - data definition errors	List of field names and their values where values that do not follow the official specifications. Details are explained in the QA documentation.	memo

Biology in Lakes - Ecological Quality Ratio data (Waterbase_Lakes_v14_Biology_EQR, 2236 records)

Ecological Quality Ratio data on biology measured at WISE-SoE lake monitoring stations.

FieldName	Definition	Note	DataType
RecordID	Unique record identifier		long
RecordReported	Date when the records was reported by the data provider		text(10)
CountryCode	Abbreviation of EEA Member or Collaborating Country from which territory the data come from.	ISO 3166-1-alpha-2 code elements	text(2)
WaterCategory	Water Category, as defined in the codelist.		text(2)
WaterbaseID	Internally produced, unique Waterbase identifier	combination of CountryCode, '_LK_' and NationalStationID	text(100)
NationalStationID	Identifier of the lake monitoring station, unique at the national level.		text(100)
WaterbodyTypeNCS	Type of waterbody as defined by the member state.		text(50)
WaterbodyTypeIC	Type of waterbody as defined by the WFD Intercalibration process.		text(5)
Year	Year of aggregation period in which samples were taken/Year in which sample was taken.		long
AggregationPeriod	Period of aggregation of measurement data.		text(20)
AggregationPeriod_original			text(100)
AggregationMonths	Detailed specification of aggregation period by months.		text(150)
AggregationLength	Number of months in aggregation period.		long
Determinand_Biology	Pressure-specific determinand name for biological metrics.		text(50)
Unit_Biology	Unit of biological metrics.		text(20)
BQE	Code of biological quality element.	AN - Angiosperms; MA - Macroalgae; MI - Macroinvertebrate; MP - Macrophyte; PB - Phytobenthos; PP - Phytoplankton	text(2)
MetricScale	The scale the of biological metric	EQR - Ecological Quality Ratio, i.e. metric in original scale divided by the metric's reference value; original - metric reported in its original scale	text(8)
DeterminandStatusClass	Ecological status class of a monitoring station calculated for a single biological quality element.	B - Bad ecological status, as defined by the WFD; G - Good ecological status, as defined by the WFD; GEP - Good ecological potential (for artificial and heavily modified waterbodies), as defined by the WFD; H - High ecological status, as defined by the WFD; M - Moderate ecological status, as defined by the WFD; MaxEP - Maximum ecological potential (for artificial and heavily modified waterbodies); MPB - Moderate, poor or bad status or potential (to be used in cases where more exact classification is not available); P - Poor ecological status, as defined by the WFD	text(5)
NumberOfSamples	Number of samples included in aggregated data.		long
MeanValueEQR	Mean value of metric converted to EQR scale (Ecological Quality Ratio)		single
MeanValueNormEQR	Mean value of metric converted to normalised EQR scale (Ecological Quality Ratio).		single
TotalDepth	Total depth of water column at the sampling location and at the time of sampling (in meters).		single
NoOfSubsites	Number of subsites		long
MethodSubsitesSpatialAggreg	Method of subsite aggregation - if several subsites across the water body profile are joined into one monitoring station.		text(255)
Remarks	Remarks, comments or explanatory notes		text(255)
AggregatedBy	Subject(s) that aggregated the data.		text(20)
QA_MVissues	Quality assessment field - main meassurement value issue flag.	A code identifying an issue or an error in the main meassurement value of the record. Details are explained in the QA documentation.	long
QA_outlier	Quality assessment field - outlier flag.	Outlier code assigned to the record. Details are explained in the QA documentation.	long
QA_station_issues	Quality assessment field - stations data quality issues flag	List of codes of station data issues detected in the record. Details are explained in the QA documentation.	text(100)
QA_DDviolations	Quality assessment field - data definition errors	List of field names and their values where values that do not follow the official specifications. Details are explained in the QA documentation.	memo

Biology in Lakes - Additional data (Waterbase_Lakes_v14_Biology_Additional, 5782 records)

Additional Quality Ratio data on biology measured at WISE-SoE lake monitoring stations.

FieldName	Definition	Note	DataType
RecordID	Unique record identifier		long
RecordReported	Date when the records was reported by the data provider		text(10)
CountryCode	Abbreviation of EEA Member or Collaborating Country from which territory the data come from.	ISO 3166-1-alpha-2 code elements	text(2)
WaterCategory	Water Category, as defined in the codelist.		text(2)
WaterbaseID	Internally produced, unique Waterbase identifier	combination of CountryCode, '_LK_' and NationalStationID	text(100)
NationalStationID	Identifier of the lake monitoring station, unique at the national level.		text(100)
WaterbodyTypeIC	Type of waterbody as defined by the WFD Intercalibration process.		text(10)
Year	Year of aggregation period in which samples were taken/Year in which sample was taken.		long
AggregationPeriod	Period of aggregation of measurement data.		text(20)
AggregationPeriod_original			text(100)
AggregationMonths	Detailed specification of aggregation period by months.		text(150)
AggregationLength	Number of months in aggregation period.		long
Determinand_Biology	Pressure-specific determinand name for biological metrics.		text(50)
Unit_Biology	Unit of biological metrics.		text(20)
BQE	Code of biological quality element.	AN - Angiosperms; MA - Macroalgae; MI - Macroinvertebrate; MP - Macrophyte; PB - Phytobenthos; PP - Phytoplankton	text(2)
MetricScale	The scale the of biological metric	EQR - Ecological Quality Ratio, i.e. metric in original scale divided by the metric's reference value; original - metric reported in its original scale	text(8)
NumberOfSamples	Number of samples included in aggregated data.		long
Minimum	Minimum disaggregated sample concentration value of the input data used for aggregation.		single
Maximum	Maximum disaggregated sample concentration value of the input data used for aggregation.		single
Median	Median concentration value of aggregated data.		single
StandardDeviation	Standard deviation of concentration values of aggregated data.		single
TotalDepth	Total depth of water column at the sampling location and at the time of sampling (in meters).		single
NoOfSubsites	Number of subsites		long
MethodSubsitesSpatialAggreg	Method of subsite aggregation - if several subsites across the water body profile are joined into one monitoring station.		text(255)
Remarks	Remarks, comments or explanatory notes		text(255)
AggregatedBy	Subject(s) that aggregated the data.		text(20)
QA_MVissues	Quality assessment field - main meassurement value issue flag.	A code identifying an issue or an error in the main meassurement value of the record. Details are explained in the QA documentation.	long
QA_LRviolations	Quality assessment field - list of logical rules violations.	List of codes of logical rules violated by record. Details are explained in the QA documentation.	text(150)
QA_outlier	Quality assessment field - outlier flag.	Outlier code assigned to the record. Details are explained in the QA documentation.	long
QA_station_issues	Quality assessment field - stations data quality issues flag	List of codes of station data issues detected in the record. Details are explained in the QA documentation.	text(100)
QA_DDviolations	Quality assessment field - data definition errors	List of field names and their values where values that do not follow the official specifications. Details are explained in the QA documentation.	memo
MeanValueOriginal	Mean value of metric in the original metric scale.		single

Waterbase-Lakes (Microsoft Access database file) (ZIP archive)
20.47 MB Download file
Waterbase-Lakes (CSV files) (ZIP archive)
11.27 MB Download file

Additional information

Tables metadata

Definition and field description of all data tables.

Tables metadata (XLS file) (Microsoft Excel spreadsheet)
39.50 KB Download file
Tables metadata (CSV files) (ZIP archive)
10.02 KB Download file

Code lists

Lists and description of codes of selected fields present in the Waterbase-Lakes data tables

Code lists (XLS file) (Microsoft Excel spreadsheet)
157.00 KB Download file
Code lists (CSV files) (ZIP archive)
20.71 KB Download file

QA documentation

Quality control documentation briefly presents ETC/ICM and EEA activities focused on quality of Waterbase-Lakes dataset and results of these activities. In addition warning is given on the use of certain records for analytical purposes.

QA documentation (ZIP archive)
242.69 KB Download file

Graphics

Graphical annexes.

Illustration of reporting of biological metric values and class boundaries in EQR scale. (JPEG image)
140.67 KB Download file

Metadata

Reporting obligations (ROD)

Lake quality (EWN-2)

Rights:

EEA standard re-use policy: unless otherwise indicated, re-use of content on the EEA website for commercial or non-commercial purposes is permitted free of charge, provided that the source is acknowledged (https://www.eea.europa.eu/legal/copyright). Copyright holder: European Environment Agency (EEA).

Disclaimer:

Data in Waterbase are sub-samples of national data assembled for the purpose of providing comparable indicators of pressures, state and impact of waters on a Europe-wide scale and the data sets are not intended for assessing compliance with any European Directive or any other legal instrument. Information on the national and sub-national scales should be sought from other sources.

Data sources

The European Topic Centre on Inland, Coastal and Marin waters. Version 14, date of delivery (date sent to the Data Service): 30/06/2014.

Owners:

European Environment Agency (EEA)

Processors:

European Topic Centre on Inland, Coastal and Marine waters (ETC/ICM)

Additional information

Waterbase contains timely, reliable and policy-relevant data collected from EEA member countries through the WISE-SoE data collection (formerly known as Eionet-Water and Eurowaternet) process. WISE-SoE data collection selects validated monitoring data from national databases and adds information on the physical characteristics of the water bodies being monitored and on the pressures potentially affecting water quality. The added value of Waterbase is that data collected through the WISE-SoE data collection process are from statistically stratified monitoring stations and groundwater bodies and are comparable at the European level. Waterbase data are primarily used in the production of the EEA's indicator-based factsheets.

For references, please go to https://www.eea.europa.eu/data-and-maps/data/waterbase-lakes-10 or scan the QR code.

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