| Site number | 13303 |
| Measuring point system | Grundnetz |
| Community | Sontheim |
| District | Unterallgäu |
| Operator | |
| Aquifer | Niederterrasse |
| Measurement site depth under ground [m] | 13.50 m |
| Ground level | 617.47 m above sealevel |
| Easting | 599834 (ETRS89 / UTM Zone 32N) |
| Northing | 5317249 |
| Observation period | 01.07.2010 to 14.07.2026 |
Hauptwerte (Tagesmittelwerte): |
| Maximum waterlevel (HHW) | 613.45 m above sealevel |
| Mean waterlevel (MW) | 610.57 m above sealevel |
| Minimum waterlevel (NNW) | 609.38 m above sealevel |
| Mean Highest Groundwater Level (MHGW) | 611.43 m above sealevel (Period: 01.11.2009 - 01.11.2026) |