From OpenStreetMap Wiki
|Monitoring station for groundwater parameters|
|Used on these elements|
|Status: In use|
|Tools for this tag|
Ato measure groundwater parameters like level, pore pressure and quality. Also used for measuring of groundwater contamination.
There are two main base types of groundwater monitoring facilities:
- monitoring:groundwater=level - for water level monitoring
- monitoring:groundwater=quality - for water quality monitoring
If no information is available or the facility is used for both measurements, use (monitoring:groundwater=yes).
- ref=* - to annotate the reference code, if existing