Waterbase-Rivers: Quality

Data Table

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/.)

The Quality table contains data on nutrients and organic matter in water measured at Eionet-Water river 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 Pressures data. Each record has two special quality assurance fields. They are explained in QA documentation which can be found in &quot;Additional information&quot; part.

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Category

European data

Records

596767

Table definition

NumberOfSamples	Number of samples	number of samples in aggregation period.	smallint(2)	0
Year	Year	year of aggregation period (aggregated data sets), or year in which sample taken (disaggregated data sets), in format YYYY. Year should be no later than that requested in the last Eionet-Water data request.	int(4)	-1
PeriodLength	Period length	number of months in aggregation period.	int(4)	0
QA_outlier	Quality assurance field - outlier flag	mean value is an outlier for current station and determinand time series: 1=yes, 0=no.	bit(1)	0
LimitofDetection	Limit of detection	concentration for which there is a desirably small probability (around 5%) that the determinand will not be detected, i.e. there is a 95% probability that the determinand will be detected.	numeric(9)	0
LimitofDetermination	Limit of determination	the smallest concentration that can be distinguished from the analytical blank at a chosen level of statistical confidence (usually 95%).	numeric(9)	0
Mean	Mean	mean concentration value of aggregated data. On aggregation, sample concentration values recorded as below the limit of detection or determination have been replaced with a value equivalent to half the limit of detection or determination.	numeric(9)	0
Minimum	Minimum	minimum concentration value of aggregated data. On aggregation, sample concentration values recorded as below the limit of detection or determination have been replaced with a value equivalent to half the limit of detection or determination.	numeric(9)	0
Maximum	Maximum	maximum concentration value of aggregated data. On aggregation, sample concentration values recorded as below the limit of detection or determination have been replaced with a value equivalent to half the limit of detection or determination.	numeric(9)	0
Median	Median	median concentration value of aggregated data. On aggregation, sample concentration values recorded as below the limit of detection or determination have been replaced with a value equivalent to half the limit of detection or determination.	numeric(9)	0
StandardDeviation	Standard deviation	standard deviation of concentration values of aggregated data. On aggregation, sample concentration values recorded as below the limit of detection or determination have been replaced with a value equivalent to half the limit of detection or determination.	numeric(9)	0
10percentile	10th percentile	10th percentile concentration value of aggregated data. On aggregation, sample concentration values recorded as below the limit of detection or determination have been replaced with a value equivalent to half the limit of detection or determination.	numeric(9)	0
90percentile	90th percentile	90th percentile concentration value of aggregated data. On aggregation, sample concentration values recorded as below the limit of detection or determination have been replaced with a value equivalent to half the limit of detection or determination.	numeric(9)	0
CountryCode	Country code	abbreviation of EEA Member or Collaborating country. ISO 3166-alpha-2 code elements.	nvarchar(2)	0
WaterbaseId	Waterbase ID	internally produced, unique identifier used to represent the monitoring station for rivers, lakes, transitional, coastal and marine waters, and water quantity, in the format CountryCode_WaterDataSet_NationalStationID (e.g. AT_RV_001), or the groundwater body, in the format CountryCode_WaterDataSet_EWN-Code (e.g. AT_GW_AT001).	nvarchar(50)	-1
Determinand	Determinand	determinand name.	nvarchar(50)	-1
Unit	Unit	unit of measurement.	nvarchar(20)	0
AggregationPeriod	Aggregation period	period of aggregation: Annual=aggregated over whole year, Summer=aggregated over summer months, Winter=aggregated over winter months, MMYYYY-MMYYYY or YYYY-YYYY=aggregated between two periods (TCM only).	nvarchar(20)	-1
Remarks	Remarks	remarks, comments or explanatory notes.	nvarchar(255)	0
QA_LRviolations	Quality assurance field - numerical list of logical rules violated in record	tested logical rules are explanained in QA documentation.	nvarchar(100)	0