50.259653 6.881986 50.260318 6.882443 50.259653 6.881986 50.260318 6.882443 50.260318 6.881986 50.260210 6.882001 50.260102 6.882023 50.260049 6.882061 50.259998 6.882099 50.259656 6.882441 50.259653 6.882443 175651 Entwicklung Quellen und Quellbäche Biotopkataster Flächen