| Site number | 18657 |
| Measuring point system | Staatliches Sondernetz |
| Community | Aldersbach |
| District | Passau |
| Operator | |
| Aquifer | |
| Measurement site depth under ground [m] | 4.50 m |
| Ground level | 324.36 m above sealevel |
| Easting | 797668 (ETRS89 / UTM Zone 32N) |
| Northing | 5390705 |
| Observation period | 04.10.2005 to 25.04.2026 |
Hauptwerte (Tagesmittelwerte): |
| Maximum waterlevel (HHW) | 323.94 m above sealevel |
| Mean waterlevel (MW) | 321.93 m above sealevel |
| Minimum waterlevel (NNW) | 321.69 m above sealevel |
| Mean Highest Groundwater Level (MHGW) | 322.98 m above sealevel (Period: 01.11.2004 - 01.11.2026) |