no ext data available for STELLDBTN after 1996

[veenstrajelmer]

import ddlpy
locations = ddlpy.locations()
bool_hoedanigheid = locations['Hoedanigheid.Code'].isin(['NAP'])
bool_stations = locations.index.isin(['STELLDBTN'])
bool_grootheid = locations['Grootheid.Code'].isin(['WATHTE'])
bool_groepering = locations['Groepering.Code'].isin(['GETETM2'])
selected = locations.loc[bool_grootheid & bool_hoedanigheid & bool_groepering & bool_stations]

start_date = "1995-01-01"
end_date = "2021-01-01"

available = ddlpy.measurements_amount(selected.iloc[0], start_date, end_date, period="Jaar")
print(available)

Prints:

  Groeperingsperiode  AantalMetingen
0               1995            1411
1               1996            1414

It seems to me that more extreme data should be present for this station somewhere.

[TvLoon-RWS]

Maybe a different location code is used after 1996. This question will be asked to our expert.

[KDoekes-RWS]

In 1991 there was an optimization of the national water measurement network of Rijkswaterstaat. Some tide gauges were discontinued, and some handed to regional sections of Rijkswaterstaat, some of which had own regional water level measurement networks at the time. Stellendam buiten was replaced in the national water level measurement network by Haringvliet 10 and handed over to Rijkswaterstaat Directie Zuid-Holland (DZH). There was no obligation for the managers of regional tide gauges to compute HW/LW-data from the 10 minute values, or for that matter to validate the data. By the way, Stellendam buiten is unique because it is the only location not included in the national water level measurement network for which predictions are published in Getijtafels voor Nederland (under the name Haringvlietsluizen).