50.261812 6.889434 50.262568 6.891738 50.261812 6.889434 50.262568 6.891738 50.261812 6.889434 50.261835 6.889529 50.261868 6.889724 50.261885 6.889821 50.261995 6.890446 50.262103 6.890855 50.262310 6.891344 50.262568 6.891738 175656 Entwicklung Quellen und Quellbäche Biotopkataster Flächen