Pegel

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Pegel#

Overview#

The administration of German waterways (WSV) is providing data of certain stations at german rivers for maximum last 30 days. Data is provided kindly over a REST API. Measured parameters include water level and discharge for most stations but may also include chemical, meteorologic and other types of values. The recording interval is a property of the station rather than of the network, so the resolutions below are not periods the network as a whole reports in: each station is listed under the one it actually records at, which the API publishes as the equidistance of the timeseries. A station that records different parameters at different intervals – stage every 15 minutes, air temperature every 60, say – appears under both, and each parameter is only served under the resolution it belongs to. Besides continuously measured values there are also a number of statistical values which are fragmentary provided per each station:

  • m_i -> first flood marking

  • m_ii -> second flood marking

  • m_iii -> third flood marking

  • mnw -> mean of low water level

  • mw -> mean of water level

  • mhw -> mean of high water level

  • hhw -> highest water level

  • hsw -> highest of shipping water level

Each station also lists the altitude of its stage gauge’s zero, in metres, as gauge_zero, and the vertical datum that altitude is given in, as Pegelonline publishes it, as gauge_zero_datum: mostly m. ü. NHN, but m. ü. NN for some gauges, m ü. A. for the Austrian ones on the Danube and mü.M. for Basel, so compare two gauge zeros only where their datums agree.

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