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An application used to control the river level and its flow at hydrological stations in Poland, divided into voivodeships.

Functionalities:
- offline support - after the first data download, the application works on the last known states without the need for the Internet (only charts are downloaded on an ongoing basis)
- filtering by voivodeship
- searching for a river on the list
- river sorting
- ability to hide rivers from the list (visibility settings)
- list of favorite rivers
- list of favorite stations
- notes to the river
- river station map
- associated stations ("neighboring stations")
- fully customizable notifications for the selected station and their management menu

With the help of its own database on the server, the application can display the water level for a period of 1 year (IMGW provides data only for the last 3 days).

The data comes from the website hydro.imgw.pl