📸 Grab your camera, send your pictures and become part of the ‘Discover Groundwater’ GeoStory series! Find out how 👇

💧Part 1 (of 5) on the Beauty of #Groundwater is already online.

🔗Find out more: un-igrac.org/latest/news/....

#photocontest #water #GeoStory #IAH2025

🌏 #IAH2025 is finished and a special week coming to an end.

#Newsletter with 3 launches in 1 week:
📸'Beauty of Groundwater' is online with call-to-action
📊Groundwater level data from 47 countries in #StateOfWater
🗺️Transboundary Aquifers of the World Map 2025
🔓 #OpenAccess #Article
🔗 bit.ly/4nhCPQm

🌍 #NEW: Transboundary Aquifers of the World 2025 #map. Just presented at #IAH2025 and now available for #download. Explore what's new!

🔗 #Download: un-igrac.org/latest/news/....

#groundwater #SDG6 #SDG652 #GlobalGoals #Cartography #water #hydrogeology #IAHCongress #hydrodiplomacy @unesco.org

A professor and indigenous groundwater science leader speaks at a conference podium. Conference logo in background designed by Uncle Anthony Newcastle.

The start of Day 3 of the #IAH2025 international groundwater congress here in Naarm / Melbourne. Keynote speaker Prof Brad Moggridge reflects on yesterday's indigenous groundwater sessions.

The conference logo designed by Uncle Anthony Newcastle.

📢 #Launch at #IAH2025. IAH & IGRAC just launched the 'Discover Groundwater' series.

📸 Grab your camera and become part of it! The series of 5 parts will show the beauty, history, use, challenges and protection of groundwater.

🔗See part 1: un-igrac.org/latest/stori....

#IAHCongress #Hydrogeology

GI - An underground drip water monitoring network to characterize rainfall recharge of groundwater at different geologies, environments, and climates across Australia Abstract. Understanding when and why groundwater recharge occurs is of fundamental importance for the sustainable use of this essential freshwater resource for humans and ecosystems. However, accurately capturing this component of the water balance is widely acknowledged to be a major challenge. Direct physical measurements identifying when groundwater recharge is occurring are possible by utilizing a sensor network of hydrological loggers deployed in underground spaces located in the vadose zone. Through measurements of water percolating into these spaces from above, we can record the potential groundwater recharge process in action. By using automated sensors, it is possible to precisely determine when recharge occurs (which event, month, or season and for which climate condition). Combined with daily rainfall data, it is possible to quantify the “rainfall recharge threshold”, the amount of rainfall needed to generate groundwater recharge, and its temporal and spatial variability. Australia's National Groundwater Recharge Observing System (NGROS) provides the first dedicated sensor network for observing groundwater recharge at an event scale across a wide range of geologies, environments, and climate types representing a wide range of Australian hydroclimates. Utilizing tunnels, mines, caves, and other subsurface spaces located in the vadose zone, the sensors effectively record “deep drainage”, water that can move beyond the shallow subsurface and root zone to generate groundwater recharge. The NGROS has the temporal resolution to capture individual recharge events, with multiple sensors deployed at each site to constrain the heterogeneity of recharge between different flow paths, and to quantify (including uncertainty bounds) rainfall recharge thresholds. Established in 2022, the network is described here together with examples of data being generated.

Groundwater news from day 2 at #IAH2025 in Naarm / Melbourne.

NGROS presentations by Wendy Timms and Akhi Kumar on groundwater recharge.

Find out more on NGROS at gi.copernicus.org/articles/13/...

Why not establish something similar in your country?

#groundwater

Day one of the #IAH2025 Congress and the fieldtrip led by Wendy Timms at the Walhalla Long Tunnel Heritage Gold Mine.

What has this to do with groundwater? Mines like this are observatories of groundwater recharges in action. And we have had loggers in the mine recording when recharge events occur.

New Transboundary Aquifer Map & Groundwater Level Trends: Meet IGRAC at IAH 2025! - IGRAC The launch of the new Transboundary Aquifers of the World Map and Groundwater Level Trends research. Meet us at IAH 2025 in Melbourne!

🗓️ Attending the #IAH2025 ? Mark this in your agendas! 👇

📉 #Research on 20-year #groundwater level trends. (16 Sep - 10:30)

🗺️ Transboundary Aquifers #map #launch (19 Sep - Poster Board P047)

🔗 un-igrac.org/latest/news/...

#IAHCongress #water #data #datascience #GroundwaterMatters #hydrogeology

Vol. 10: Meet us at IAH 2025 for the launch of the new Transboundary Aquifers of the World Map! In this month's #UndergroundUpdate we look forward to the IAH 2025 Congress in Melbourne, Australia. Not just because this is the yearly highlight for any groundwater enthusiast, but also because we w...

Meet us at #IAH2025 for the launch of the #new Transboundary Aquifers of the World #map!

In this month's #newsletter:
🇯🇴 @UNESCWA workshop.
🇲🇾IGM conference in #Malaysia.
🇧🇴Story from our #Bolivia correspondent
🇩🇿🇸🇳Country profiles #Algeria & #Senegal.

www.linkedin.com/pulse/vol-10...

🇦🇺 #CallForAbstracts: Be part of our #groundwater #monitoring and reporting session at #IAH2025 in #Melbourne!👇

🔗 Submit your abstract before 28 February through this link: iah2025congress.com/call-for-abs....

#conference #water #science #Australia