875 gauges in 16 voivodeships report to this page. Of those with a normal range to compare against, 395 are low, 306 are normal and 77 are high for the date.
The balance is tilted firmly towards low water. Autumn is often a low point for rivers after the summer, until steady rain returns. The biggest rivers on the list include the Vistula, Oder, Warta and Bóbr.
Readings come from Instytut Meteorologii i Gospodarki Wodnej – Państwowy Instytut Badawczy (IMGW-PIB) and refresh as new data is published.