The GVG card, Average Spring Groundwater level. For the average spring groundwater level, groundwater levels are averaged on 14 March, 28 March and 14 April each year. The average of these annual values over a period of at least 8 years, in which no interventions have taken place, is used as GVG.
Build on reliable and scalable technology
FAQ
Frequently Asked Questions
Some basic informations about API Store ®.
Operation and development of APIs are currently fully funded by company Apitalks and its usage is for free.
Yes, you can.
All important information such as time of last update, license and other information are in response of each API call.
In case of major update that would not be compatible with previous version of API, we keep for 30 days both versions so you will have enough time to transfer to new version. We will inform you about the changes in advance by e-mail.