50.820257 7.697300 50.821632 7.698004 50.820257 7.697300 50.821632 7.698004 50.820257 7.697300 50.820403 7.697453 50.820551 7.697600 50.820683 7.697706 50.820850 7.697863 50.821073 7.697949 50.821247 7.697986 50.821424 7.697993 50.821632 7.698004 157412 Entwicklung Quellen und Quellbäche Biotopkataster Flächen