| Site number | 15997 |
| Measuring point system | Staatliches Sondernetz |
| Community | Altdorf |
| District | Landshut |
| Operator | |
| Aquifer | Quartär |
| Measurement site depth under ground [m] | 6.50 m |
| Ground level | 395.19 m above sealevel |
| Easting | 729201 (ETRS89 / UTM Zone 32N) |
| Northing | 5382680 |
| Observation period | 24.05.1996 to 13.07.2026 |
Hauptwerte (Tagesmittelwerte): |
| Maximum waterlevel (HHW) | 392.99 m above sealevel |
| Mean waterlevel (MW) | 392.32 m above sealevel |
| Minimum waterlevel (NNW) | 391.92 m above sealevel |
| Mean Highest Groundwater Level (MHGW) | 392.61 m above sealevel (Period: 01.11.1995 - 01.11.2026) |