50.441967 6.751866 50.442512 6.752020 50.441967 6.751866 50.442512 6.752020 50.441967 6.752020 50.441969 6.752020 50.442002 6.751981 50.442039 6.751936 50.442068 6.751901 50.442094 6.751869 50.442295 6.751910 50.442403 6.751888 50.442512 6.751866 159670 Entwicklung Quellen und Quellbäche Biotopkataster Flächen