The GGMN (Global Groundwater Monitoring Network) portal provides insight on the availability of groundwater monitoring data in space and time. Groundwater level data and changes in groundwater levels can be displayed on a regional scale. Additional data layers and information are available to analyse the monitoring data in a broader water-related context.
The web-based software application assists users in the spatial and temporal analysis of monitoring data. The system is integrated with QGIS to process data offline. QGIS is an open source and freeware Geographic Information System with a variety of functionalities to analyse data and create spatially interpolated groundwater level maps.
PLEASE NOTE: Currently, the GGMN portal is being updated and it is not availale at it's usual address https://ggmn.un-igrac.org/. However, GGMN data can still be visualised at https://ggmn.lizard.net/. The new GGMN portal will be available in January 2021.
YOUR GGMN PORTAL
Member states which are interested in making use of the GGMN are provided with a password protected environment within the GGMN application. This allows users to upload, interpolate and analyse the groundwater data using the following options:
- Representative groundwater point measurements can be uploaded to the protected environment. Alternatively, measurements can be transferred from a national system via web services.
- Data can be displayed showing the mean, range or change in groundwater level for a selected time period.
- The GGMN is integrated with QGIS to process data offline. Point measurements can be combined with proxy information and personal expertise to create groundwater level maps. Produced groundwater maps can be shared via the online GGMN Portal.
- Time series analysis can be performed for each point measurement location to better understand temporal changes of groundwater levels. The time series analysis is a step-by-step procedure to identify trends, periodic fluctuations and autoregressive model. Time series analysis helps defining optimal monitoring frequencies, one of the key components of groundwater monitoring network design.