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traqua.bsky.social
Traqua.be 💧🧪🔦
@traqua.bsky.social
💧We track water. Talking about hydrology & hydrogeology - dye tracing🔦🧪 - groundwater & surface water - karst & caves.

We're Amaël Poulain (Hydrogeo, Ph.D), Sofie de Volder (Biz Dev), and Maurel Leunte (Hydrogeo)
Reposted by Traqua.be 💧🧪🔦
Groundwater level monitoring at Salisbury Cathedral.

Salisbury Cathedral, built in the 13th century, is the highest is the UK reaching up to 123m and is built on wet sand and gravel close to the river Avon.
August 22, 2025 at 12:37 PM
Two days of excellent talks, panel discussions, and networking at The Dewatering Institute conference, followed by a site visit of a project by Bronbemaling.com and a gala dinner with Award ceremony.

Cherry on the cake 🍰 : TRAQUA won the 'Dewatering Consultant Project of the year' Award!
November 13, 2025 at 11:48 AM
Second week of our 𝗱𝘆𝗲 𝘁𝗿𝗮𝗰𝗶𝗻𝗴 𝗰𝗮𝗺𝗽𝗮𝗶𝗴𝗻 🧪 for De Watergroep.

The project is part of the @natalieproject.bsky.social, an EU-funded initiative that promotes 𝗻𝗮𝘁𝘂𝗿𝗲-𝗯𝗮𝘀𝗲𝗱 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 (𝗡𝗕𝗦) to address the challenges of climate change across Europe.

Photo credit: Jeroen November 📸
November 10, 2025 at 1:45 PM
Reposted by Traqua.be 💧🧪🔦
Reposted by Traqua.be 💧🧪🔦
🌏 #Qanat, #Karez, #Kanerjing, #Foggara, #Khettara, #ViajeDeAgua, #GaleríasFiltrantes, #Puqui or #Socavón.

🔗 In part 2 of the Discover Groundwater series, we explore The History of Groundwater. You can read all about it here: un-igrac.org/latest/stori....

🤝 @iahgroundwater.bsky.social #groundwater
November 5, 2025 at 1:21 PM
Reposted by Traqua.be 💧🧪🔦
Although Sistema Sac Aktun has been surpassed by Sistema Ox Bel Ha as the world’s longest underwater cave, it remains one of the most scientifically fascinating and culturally rich submerged cave systems on Earth.

🧪
sites.northwestern.edu/monroyrios/s...

#Karst #Yucatán #CaveDiving
Sistema Sac Aktun – longest underwater cave
Image: Archivo Gran Acuífero Maya (GAM)/INAH. Leer en Español Follow @mantarayo Sistema Sac Aktun (white cave) is one of the cave systems that discharge fresh water into the Caribbean Sea. Differen…
sites.northwestern.edu
November 6, 2025 at 2:10 AM
Reposted by Traqua.be 💧🧪🔦
Awesome! 🤩 the caves in Yucatan with their rich ecosystems and archaeological significance must be protected from disastrous developments like the infamous #trenmaya! @pucicu.de @olakwiecien3.bsky.social
November 7, 2025 at 5:45 PM
Reposted by Traqua.be 💧🧪🔦
Apply to the #Ecohydro Tiny Grants for financial support to attend the @agu.org Fall Meeting!
The Ecohydrological T.C. is announcing its yearly "Tiny Grant" program for early-career scientists! The $1500 award will be split among recipients to help cover the cost of attending the AGU Fall 2025 Meeting!

Fill out the online form here to apply:
forms.gle/wNcGkDikAxNg...
November 7, 2025 at 3:06 PM
When groundwater extraction >> recharge rates, this usually means problems.

"Arizona's Willcox basin is sinking fast due to groundwater extraction"

www.msn.com/en-us/weathe...
November 7, 2025 at 2:40 PM
This doesn't sound good...💀🛢️

"Warming temperatures and increased precipitation in the Canadian High Arctic are mobilizing new pathways for subsurface contaminants to spread from more than 2,500 contaminated sites..."

www.mcgill.ca/newsroom/cha...
Climate change could result in contaminant spread in the High Arctic, McGill study finds
Warming temperatures and increased precipitation in the Canadian High Arctic are mobilizing new pathways for subsurface contaminants to spread from more than 2,500 contaminated sites associated with i...
www.mcgill.ca
November 7, 2025 at 9:52 AM
Le phénomène de l'𝗶𝗻𝘃𝗲𝗿𝘀𝗮𝗰 𝗱𝗲 𝗹𝗮 𝗩𝗶𝘀𝗲, dans l’étang de Thau, montre la fragilité des nappes phréatiques côtières face aux 𝗶𝗻𝘁𝗿𝘂𝘀𝗶𝗼𝗻𝘀 𝗱’𝗲𝗮𝘂 𝘀𝗮𝗹𝗲́𝗲.

La source sous-marine de la Vise rejette de l’eau douce, mais en cas de sécheresse prolongée, 𝗹𝗲 𝗳𝗹𝘂𝘅 𝘀’𝗶𝗻𝘃𝗲𝗿𝘀𝗲.

www.pourlascience.fr/sd/geoscienc...
L’inversac de la Vise éclaire la vulnérabilité des nappes phréatiques côtières aux intrusions d’eau salée
La source sous-marine de la Vise, dans l’étang de Thau, s’inverse parfois et l’eau de mer remonte dans l’aquifère. Un apport d’eau douce exceptionnel est alors nécessaire pour rétablir la situation.
www.pourlascience.fr
November 7, 2025 at 9:31 AM
Injection of fluorescent tracer (sodium fluorescein) with the aim to use the chalk underground for an Aquifer Storage Transfer and Recovery project, a natural buffer to store purified water.

Fluorescein looks blood red in high concentrations. First (surprising) results are in. More to come.
November 5, 2025 at 9:30 AM
Man-made disasters and their long-lasting impact on 𝗴𝗿𝗼𝘂𝗻𝗱𝘄𝗮𝘁𝗲𝗿, human health and the environment.

Not man-made in the strict sense, as the arsenic is naturally present in the sediment, but certainly caused by human interference.

𝗔𝗿𝘀𝗲𝗻𝗶𝗰 𝗰𝗼𝗻𝘁𝗮𝗺𝗶𝗻𝗮𝘁𝗲𝗱 𝗴𝗿𝗼𝘂𝗻𝗱𝘄𝗮𝘁𝗲𝗿 𝗶𝗻 𝘁𝗵𝗲 𝗚𝗮𝗻𝗴𝗲𝘀 𝗗𝗲𝗹𝘁𝗮 (𝟭𝟵𝟳𝟬𝘀-𝟭𝟵𝟵𝟬𝘀)
November 5, 2025 at 8:06 AM
There's worse weather for field day 😊🌞. Collecting the first data of our dye tracer injection we performed yesterday.

The goal is to analyse the water storage capacity of the chalk, as part of the @natalieproject.bsky.social.
November 4, 2025 at 4:07 PM
We were featured in Neomag, the magazine of the Centre for Technological Innovation in Sustainable Construction.

For the construction industry we focus on providing expertise on groundwater management in heterogenous underground, rainwater and used water infiltration, and flood risk assessments.
November 4, 2025 at 8:46 AM
Tracer injection for a ASTR (Aquifer Storage Transport and Recovery) project where the chalk underground is used as a natural buffer and storage for treated wastewater.

This is part of the EU funded @natalieproject.bsky.social.

Images by Jeroen November from De Watergroep.
November 3, 2025 at 9:12 PM
Reposted by Traqua.be 💧🧪🔦
I love this idea of relatively simple physics being used practically to get large amounts of PFAS out of wastewater.

Foam!
deingenieur.nl/artikelen/de...
Delftse wetenschappers halen PFAS met schuim uit afvalwater
deingenieur.nl
November 2, 2025 at 11:57 AM
Reposted by Traqua.be 💧🧪🔦
Spotted some fun graffiti using classic Belgian comics characters on the enclosure around a building site in Brussels

Brussels has proper “official” commissioned murals on buildings around the city but this is likely rogue agents having a laugh
November 1, 2025 at 5:20 PM
Climate change is resulting in more weather extremes, with the catastrophic category 5 Hurricane Melissa, one of the largest ever recorded, hitting Jamaica only a few days ago, to an exceptionally quiet hurricane season in Florida, affecting groundwater recharge.

www.wuft.org/text/busines...
October 31, 2025 at 9:52 AM
We often think about flooding as a direct result of heavy rainfall. However, 𝗴𝗿𝗼𝘂𝗻𝗱𝘄𝗮𝘁𝗲𝗿 𝗳𝗹𝗼𝗼𝗱 𝗿𝗶𝘀𝗸 also needs to be taken into account, especially in regions with a lot of abandoned flooded mines.

Interesting PhD position at @newcastleuni.bsky.social.

www.jobs.ac.uk/job/DPG360/p...
PhD Studentship: How Does the Superficial Geology of Gateshead and Newcastle Influence Groundwater Flood Risk at Newcastle University
Discover a PhD Studentship: PhD Studentship: How Does the Superficial Geology of Gateshead and Newcastle Influence Groundwater Flood Risk Explore more PhD opportunities and apply today!
www.jobs.ac.uk
October 31, 2025 at 9:13 AM
TRAQUA's newsletter has arrived 🥳.

𝗣𝗹𝗲𝗻𝘁𝘆 𝗼𝗳 𝗻𝗲𝘄 𝗮𝗿𝘁𝗶𝗰𝗹𝗲𝘀. Congratulations to the authors who had their work published this month 👏!

A new project on 𝗮𝗾𝘂𝗮𝘁𝗵𝗲𝗿𝗺𝗮𝗹 𝗲𝗻𝗲𝗿𝗴𝘆.

Our most popular LI post on '𝗪𝗵𝗮𝘁 𝗱𝗼𝗲𝘀 𝗮 𝗵𝘆𝗱𝗿𝗼𝗴𝗲𝗼𝗹𝗼𝗴𝗶𝘀𝘁 𝗱𝗼?'.

And many 𝘂𝗽𝗰𝗼𝗺𝗶𝗻𝗴 𝗲𝘃𝗲𝗻𝘁𝘀.

www.linkedin.com/pulse/traqua...
TRAQUA News 10/2025
Welcome to TRAQUA 's short monthly newsletter! The aim is to dive into hydro(geo)logy and to provide you with an overview of research articles, TRAQUA's current projects, and upcoming events. ✨ Our ne...
www.linkedin.com
October 30, 2025 at 9:48 AM
October 29, 2025 at 7:46 PM
Man-made disasters and their long-lasting impact on 𝗴𝗿𝗼𝘂𝗻𝗱𝘄𝗮𝘁𝗲𝗿, human health and the environment.

𝗠𝗶𝘁𝗲𝗻𝗶 𝗣𝗙𝗔𝗦 𝗽𝗼𝗹𝗹𝘂𝘁𝗶𝗼𝗻 (𝟭𝟵𝟲𝟬𝘀 - 𝟮𝟬𝟭𝟴, 𝗜𝘁𝗮𝗹𝘆)

Large-scale pollution events usually receive a lot of media attention, but many other slow forms of pollution fly under the radar.
October 29, 2025 at 7:56 AM
𝗟𝗲 𝗺𝘆𝘀𝘁𝗲̀𝗿𝗲 𝗱𝗲 𝗹𝗮 𝗳𝗹𝗮𝗾𝘂𝗲 𝘃𝗲𝗿𝘁 𝗳𝗹𝘂𝗼 🧙‍♂️

L'𝗲𝘀𝘀𝗮𝗶 𝗱𝗲 𝘁𝗿𝗮𝗰̧𝗮𝗴𝗲 à l'aide de traceurs fluorescents est utilisé en 𝗵𝘆𝗱𝗿𝗼𝗴𝗲́𝗼𝗹𝗼𝗴𝗶𝗲 ou pour caractériser l'𝗲́𝗰𝗼𝘂𝗹𝗲𝗺𝗲𝗻𝘁 𝗱𝗲𝘀 𝗲𝗮𝘂𝘅 𝘀𝗼𝘂𝘁𝗲𝗿𝗿𝗮𝗶𝗻𝗲𝘀 dans les systèmes karstiques (grottes)...

www.rtbf.be/article/le-m...
Le mystère de la flaque vert fluo de Louvain-la-Neuve élucidé - RTBF Actus
Elle est apparue ce lundi en plein centre de Louvain-la-Neuve. Cette flaque de couleur verte, fluorescente, n’a pas...
www.rtbf.be
October 28, 2025 at 1:09 PM
Reposted by Traqua.be 💧🧪🔦
The Brussels public prosecutor has opened a judicial inquiry following a report by the Court of Auditors on the "Metro 3" project.
Brussels Prosecutor opens judicial inquiry into “Metro 3” project
Brussels Prosecutor opens judicial inquiry into Metro 3 project
www.brusselstimes.com
October 28, 2025 at 10:14 AM