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You are here: Home / Data and maps / Datasets / Reference Waterbase - Lakes / Reference WATERBASE - Lakes: chemical quality data

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.
Category
European data
Records
183977
Table definition
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
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European Environment Agency (EEA)
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