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Reference Waterbase - Lakes

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Prod-ID: DAT-9-en

Created 23 May 2003 Published 23 May 2003 Last modified 15 Dec 2022

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This page was archived on 07 Jul 2014 with reason: Other (New version data-and-maps/data/waterbase-lakes-10 was published)

Reference Waterbase is the EEA's database on the status and quality of Europe's rivers, lakes and groundwater bodies

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Reference WATERBASE - Lakes: chemical quality data

The Quality table contains data on nutrients and organic matter measured at the EUROWATERNET lake monitoring stations. Each station has been assigned a unique WATERBASE identifier (WaterbaseID) which can be used to link the Quality data with their respective Stations and Pressure data.

[+] Show table definition (records: 183977)

Median	Median concentration over aggregation period		float(8)	0
75Percentile	75th Percentile concentration during aggregation period		float(8)	0
90Percentile	90th Percentile concentration during aggregation period		float(8)	0
StandardDeviation	Standard Deviation of concentration during aggregation period		float(8)	0
10Percentile	10th Percentile concentration during aggregation period		float(8)	0
25Percentile	25th Percentile concentration during aggregation period		float(8)	0
Minimum	Minimum concentration over aggregation period		float(8)	0
Maximum	Maximum concentration over aggregation period		float(8)	0
Mean	Average concentration over aggregation period		float(8)	0
NoOfSamples	Number of samples in aggregation period		int(4)	0
Year	Year of measurements	range of years available: 1931 - 1939, 1949 - 2001	int(4)	0
PeriodLength	Period Length	Number of months in aggregation period	int(4)	0
AggregationPeriod	Period of aggregation	Annual = aggregated over whole year, Summer = aggregated over summer months, Winter = aggregated over winter months	nvarchar(10)	0
WaterbaseID	Unique Waterbase Identifier	internally produced, unique identifier used to represent the monitoring station for lakes	varchar(22)	-1
Determinand	Determinand name	As defined in Metadata section "Unit"	nvarchar(50)	0
Unit	Unit of measurement	As defined in meta data section "Unit"	nvarchar(30)	0

quality_lakes_en_v2.csv.zip (ZIP archive)
3.04 MB Download file
Lakes: chemical quality metadata table (text/comma-separated-values)
2.09 KB Download file
quality_lakes_en_v2.mdb.zip (ZIP archive)
4.11 MB Download file

Metadata

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).
Units:: Oxygen saturation: % Chlorophyll a: µg/l El. Conductivity: µS/cm Secchi depth transparency: m Alkalinity: meq/l Total organic carbon: mg/l C Nitrate and nitrite nitrogen (oxidised nitrogen), Nitrite, Kjeldahl Nitrogen, Total Nitrogen, Ammonia Nitrogen, Nitrate: mg/l N BOD7, CODCr, COD unspecified, Oxygen concentration, CODMn, BOD5: mg/l O2 Orthophosphate, Total Phosphorus: mg/l P
Data sources: The European Topic Centre on Water (version 2, date of delivery: 15 May 2003)
Owners:: European Environment Agency (EEA)
Processors:: European Topic Centre on Inland, Coastal and Marine waters (ETC/ICM)

Additional information

The data contained in this database can be accessed through a series of web pages which form part of the EEA Data Service's public web site. Pre-defined applications have been designed to assist the user to extract and analyse the data in a format that is both helpful and meaningful. Reference Waterbase contains timely, reliable and policy-relevant data collected from EEA member countries through the Eurowaternet (EWN) process. EWN selects validated, mostly aggregated, 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. Although many countries make their highly aggregated data available over the Internet, the level and form of aggregation often varies from country to country making detailed quantitative comparisons difficult. The added value of Reference Waterbase is that data collected through the EWN process are from statistically stratified monitoring stations and groundwater bodies and are comparable at European level. These data are primarily used in the production of the EEA's indicator-based factsheets. Data disclaimer: The data in Reference 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.

For references, please go to https://www.eea.europa.eu/data-and-maps/data/reference-waterbase-lakes-1 or scan the QR code.

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