| Site number | 21309 |
| Measuring point system | Staatliches Sondernetz |
| Community | Rottach-Egern |
| District | Miesbach |
| Operator | |
| Aquifer | Quartär |
| Measurement site depth under ground [m] | 8.00 m |
| Ground level | 755.26 m above sealevel |
| Easting | 710432 (ETRS89 / UTM Zone 32N) |
| Northing | 5285134 |
| Observation period | 23.06.2010 to 12.05.2025 |
Hauptwerte (Tagesmittelwerte): |
| Maximum waterlevel (HHW) | 754.14 m above sealevel |
| Mean waterlevel (MW) | 751.27 m above sealevel |
| Minimum waterlevel (NNW) | 748.28 m above sealevel |
| Mean Highest Groundwater Level (MHGW) | 753.15 m above sealevel (Period: 01.11.2009 - 01.11.2025) |