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Hans van der Kwast @qwast-gis.com · 22/09/2026

Another native hydrology tool coming to #QGIS 4.4: Thin Plate Spline interpolation. 💧📈 Great for interpolating #groundwater data. Thanks to everyone who supported the crowdfunding, and to @north-road.com for the implementation! 🚀 QGIS 4.4 will be big for #hydrology. #GIS #OpenSource

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Hans van der Kwast @qwast-gis.com · 21/09/2026

A first sneak peek of the native hydrological tools coming to #QGIS 4.4! 💧🌍️ Huge thanks to everyone who contributed to the crowdfunding, and to @north-road.com for implementing these powerful new tools. QGIS 4.4 is going to be a big release for #hydrology!

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Hans van der Kwast @qwast-gis.com · 19/08/2026

🎉We did it! Thanks to the amazing support from the #QGIS community, both the initial €6000 goal and the extended €7000 goal have been achieved. Native #hydrology tools and the new flow direction & wind barb renderers will land in QGIS 4.4. More info: www.qwast-gis.com/l/crowdfundi...

Initial and extended crowdfunding goals for hydrological core features in QGIS has been achieved!

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Hans van der Kwast @qwast-gis.com · 18/08/2026

🎉Today we've reached the €6000 goal for native hydrology tools in #QGIS. Thank you🫶 📢 2 weeks left to achieve an extended goal of €7000 to add a native flow direction renderer for raster and more. 👉Info and donations: www.qwast-gis.com/l/crowdfundi... @north-road.com @lutraconsulting.bsky.social

Crowdfunding goal for native QGIS hydrology tools has been achieved. 2 weeks left to achieve extended goal

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Hans van der Kwast @qwast-gis.com · 11/08/2026

🎉We've just passed 50% of the crowdfunding goal for bringing native #hydrology tools in #qgis. Thanks for all donations so far🙏🏼 If you rely on hydrological workflows in QGIS please consider supporting this effort. 👉 Full details & donation: www.qwast-gis.com/l/crowdfundi... #gis #OSGeo #FOSS4G

Crowdfunding for native hydrology tools in QGIS

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Hans van der Kwast @qwast-gis.com · 10/07/2026

#FOSS4GNL 2026 was fantastic! Two inspiring days in Groningen with 12 workshops, 41 talks and a sold‑out conference. I wrote a blog with my highlights: www.qwast-gis.com/l/foss4gnl-2... #FOSS4G #QGIS #OSGeo #OpenData #GIS

FOSS4GNL 2026 group picture at the Academy Building of the University of Groningen

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Hans van der Kwast @qwast-gis.com · 08/07/2026

Onderweg naar #FOSS4GNL in Groningen, waar ik vandaag 3 workshops geef: 🔸️ Nieuwe #GDAL Command Line Interface 🔸️PointCloud Processing met #QGIS 🔸️GeoAI in actie Ben je er niet bij? Volg de workshops dan gratis op @gisopencourseware.bsky.social: courses.gisopencourseware.org/course/index... #OSGeoNL

Workshops voor FOSS4GNL 2026 in Groningen

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Hans van der Kwast @qwast-gis.com · 03/07/2026

Workshop Hydrological Analysis in #QGIS this morning at #foss4ge2026 Free materials at @gisopencourseware.bsky.social: courses.gisopencourseware.org

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Hans van der Kwast @qwast-gis.com · 02/07/2026

Tomorrow I’m giving my Hydrological Analysis in #QGIS workshop at #FOSS4GE 💧 👉 Follow along at #GISOCW: courses.gisopencourseware.org/course/view.... Also check out the QGIS Masterclass at the #AustralianWaterSchool: awschool.com.au/training/qgi... ‼️Use AWS-FOSS-20 for 20% off until tomorrow!

Workshop Hydrological Analysis in QGIS at #FOSS4GEurope and GIS OpenCourseWare.

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Hans van der Kwast @qwast-gis.com · 30/06/2026

I enjoyed the "Made in Europe" track at #FOSS4GEurope today. Happy to have contributed to the discussion with my presentation about #DigitalSovereignty and #OpenSource software. Thanks @marcominghini.bsky.social & @stefanielumnitz.bsky.social for hosting such an interesting and important session!

Hans van der Kwast presenting about Digital Sovereignty and Open Source Software.

Presentation Digital Sovereignty and Open Source Software.

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Hans van der Kwast @qwast-gis.com · 28/06/2026

On my way by train from Rotterdam to Timișoara for #FOSS4GE, more or less tracing the same path as the heat wave, proving even meteorology can’t resist a good #FOSS4G 😅

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Hans van der Kwast @qwast-gis.com · 27/06/2026

Watch back the #QGISOpenDay session where the Algerian #QGIS User Group was officially launched. www.youtube.com/live/6PxDgMR...

QGIS Open Day session for official launch of the Algerian QGIS User Group

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Hans van der Kwast @qwast-gis.com · 26/06/2026

It's time for the monthly #QGISOpenDay! The new Algerian #QGIS User Group will present themselves and I'll be interviewing them. Join us at 8 am UTC. Check the programme and streaming links of QGIS Open Day here: github.com/qgis/QGIS/wi...

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Hans van der Kwast @qwast-gis.com · 06/05/2026

Public sector #GIS users, your input matters! The #QGIS Trainer Network is running an international survey on how public institutions use and teach #opensource GIS. Results will be presented at the QGIS User Conference 2026 in Laax. 👉 Take the survey: nx84716.your-storageshare.de/apps/forms/s...

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Hans van der Kwast @qwast-gis.com · 23/04/2026

Meer gratis cursussen in het Nederlands op @gisopencourseware.bsky.social: courses.gisopencourseware.org/course/index...

Nederlandstalige cursussen op GIS OpenCourseWare

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Hans van der Kwast @qwast-gis.com · 23/04/2026

Vandaag staan Raymond Nijssen & ik op de HAS #GeoExperience in Den Bosch met een #QGIS stand. We geven ook een workshop over #pointcloud processing in QGIS. Niet erbij? De workshop is gratis online te volgen op @gisopencourseware.bsky.social: courses.gisopencourseware.org/course/view.... @qgis.nl

Point cloud processing & 3D visualisatie in QGIS workshop op GIS OpenCourseWare

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Hans van der Kwast @qwast-gis.com · 18/04/2026

🗓Save the date: 8–9 juli! Na 9 jaar keert #FOSS4GNL terug naar Groningen, waar het in 2017 begon. Twee dagen vol #opensource geo: hands‑on workshops + een dag presentaties voor developers, toepassers, beheerders en beleidsmakers. Ideeën en helpende handen zijn welkom! #OSGeoNL @qgis.nl

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Hans van der Kwast @qwast-gis.com · 18/04/2026

I just passed 35K subscribers on my YouTube channel and I'm grateful for everyone following my open‑source geo work. 🫶🏼 But for those who prefer to avoid big tech: my videos are also published on #QwastTube, my own #PeerTube instance. ▶️ www.youtube.com/@hansvanderk... ▶️ videos.qwast-gis.com

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Hans van der Kwast @qwast-gis.com · 14/04/2026

New course at @gisopencourseware.bsky.social! Learn collecting ground truth with @merginmaps.bsky.social, use #Ai assisted segmentation with a plugin by #TerraLab and the full #remotesensing workflow with the Semi-Automatic Classification plugin in #QGIS. 🔗 courses.gisopencourseware.org

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Hans van der Kwast @qwast-gis.com · 27/02/2026

The recording of Wednesday’s webinar “QGIS 4 for Water: What’s New, What’s Next?” is now available on the YouTube channel of the #AustralianWaterSchool! With @geomenke.bsky.social, Yonas Asfaha myself. 📹 Watch it here: youtu.be/vnHxLHHz-ZQ #QGIS #GIS #FOSS4G #OSGeo

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Hans van der Kwast @qwast-gis.com · 04/02/2026

All 60 videos from #QGIS for Hydrological Applications – 2nd Edition are now in the #Fediverse on #QwastTube! 🎉 Watch the full series here: videos.qwast-gis.com/c/qgishydro #PeerTube #QGISHydro

QGIS for Hydrological Applications channel on QwastTube

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Hans van der Kwast @qwast-gis.com · 30/01/2026

I’m launching #QwastTube, a #PeerTube based, privacy‑friendly alternative to my YouTube channel. I’m still importing videos, but it’s already live: 👉 videos.qwast-gis.com YouTube will stay in sync for now, but I hope you’ll join me on the #fediverse.

QwastTube GISOpenCourseWare channel home page.

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Hans van der Kwast @qwast-gis.com · 07/01/2026

🎉 New year, new #GIS skills! ⌨️ Learn scripting in #QGIS with my free course at @gisopencourseware.bsky.social: no complex setup, just start from QGIS. Topics: #GDAL #CLI #Python basics #PyQGIS with the Notebook plugin ✨ 👉 courses.gisopencourseware.org/course/view....

Open course on programming basics for QGIS Users

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Hans van der Kwast @qwast-gis.com · 30/12/2025

In 2025 I issued 146 official #QGIS certificates via #IHEDelft & #QWAST 🎉 Each adds €20 to QGIS ➡️ €2,920 raised! Explore trusted learning paths: 🔸 QGIS Certifying orgs: certification.qgis.org/en/ 🔸 IHE Delft: www.un-ihe.org/education 🔸 QWAST: www.qwast-gis.com/courses/ #GIS #LifeLongLearning

Group pictures with QGIS certificates issued in 2025

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Hans van der Kwast @qwast-gis.com · 18/12/2025

Today, 28 MSc students in Water & Sustainable Development at #ihedelft received the official #QGIS certificate. The winner of the theory quizzes received a signed copy of QGIS for Hydrological Applications. Congrats to all and good luck with your studies! #GIS

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Hans van der Kwast @qwast-gis.com · 15/12/2025

I was interviewed about a great new #opendata #gis layer on imperviousness in the Netherlands developed by #Friedenau Society for #KlimaatEffectAtlas. Read here: klimaatadaptatienederland.nl/actueel/actu...

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Hans van der Kwast @qwast-gis.com · 08/12/2025

This year's #30DayMapChallenge was a bit challenging due to my activities in November: 9 concerts, teaching, trips to Algeria and Morocco... Read the new blog on the #QWAST website on how I made each map. www.qwast-gis.com/l/30daymapch...

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Hans van der Kwast @qwast-gis.com · 30/11/2025

#30DayMapChallenge Day 30 – Makeover Traveling today to Marrakech 🇲🇦 for a water trade mission, so I kept it simple. I revisited my Day 2 map and turned the Schie, Coolsingel & Goudsesingel back into water bodies 💧. Stronger blue infrastructure = better climate adaptation.

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Hans van der Kwast @qwast-gis.com · 29/11/2025

#30DayMapChallenge Day 29: Raster #LiDAR DSMs often leave nodata voids at water bodies, breaking shadow modeling. For Rotterdam, I used the 0.5 m AHN4 DSM and filled gaps with my #QGIS script from the Resources Hub 👉 hub.qgis.org/scripts/4 (install via QGIS Hub plugin). 🎦 youtu.be/79yFgVLvuZM

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Hans van der Kwast @qwast-gis.com · 28/11/2025

#30DayMapChallenge Day 28: Black On this Black Friday, I found today’s theme in the depths of the Black Sea. Using the @opentopography.org DEM Downloader, I grabbed the Global Bathymetry SRTM15+ V2.1 dataset, calculated 100 m contours, and applied the Tanaka method with a style from the #QGIS Hub.

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Hans van der Kwast @qwast-gis.com · 27/11/2025

#30DayMapChallenge Day 27: Boundaries Mapped the world’s transboundary aquifers (IGRAC 2025). These underground reserves cross borders, showing water connecting us beyond geopolitics. 💧 Shared responsibility, shared future. #GIS #QGIS #WaterDiplomacy

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Hans van der Kwast @qwast-gis.com · 26/11/2025

#30DayMapChallenge Day 26: Transport 🚇 Still in Algeria, so I kept it simple: vector tiles via @maptiler.bsky.social + #OpenStreetMap in #QGIS to show public transport in Algiers. The Algiers Metro is Africa’s 2nd metro after Cairo, opened in 2011.

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Hans van der Kwast @qwast-gis.com · 25/11/2025

#30DayMapChallenge Day 25: Hexagons Busy with a water seminar organised by the Dutch embassy in Algiers, I had little time to map. So I turned to the HDX dataset of 400 m H3 hexagons and plotted the population density of the Netherlands in 2023. #GIS #QGIS #Cartography #OpenData

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Hans van der Kwast @qwast-gis.com · 24/11/2025

#30DayMapChallenge Day 24: Places and their names I mapped toponyms linked to medieval cope contracts: agreements that allowed settlers to drain and farm peatlands. Names ending in ‑cop, ‑koop, ‑kop all trace back to this hostory. The naming tradition even spread to northern Germany and Poland.

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Hans van der Kwast @qwast-gis.com · 22/11/2025

#30DayMapChallenge Day 22 – Data: #Natural Earth 🌍 ⏳ With limited time I used my own tutorial to make a population map in #QGIS. 🔗 Tutorial: courses.gisopencourseware.org/mod/book/vie... 🎥 YouTube: 👉 Symbolizing points: youtu.be/0PEZ8dUNCJk 👉 Collapsed legend: youtu.be/hxzNOf3ppbQ

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Hans van der Kwast @qwast-gis.com · 21/11/2025

#30DayMapChallenge Day 21: Icons 🗺️➡️🎶 My week in emojis. Made in #QGIS with @maptiler.bsky.social backdrop

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Hans van der Kwast @qwast-gis.com · 20/11/2025

#30DayMapChallenge Day 20: Water 🌊 No time for complexity today, so I made Invearth. By simply flipping the hillshade to Southeast in #QGIS with the #Mapzen Global Terrain layer, the Himalayas became the deepest trench and oceans turned into habitable land.

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Hans van der Kwast @qwast-gis.com · 19/11/2025

#30DayMapChallenge Day 19: #Projections 🍊🌍 Ever tried peeling an orange and laying it flat? It cracks apart, just like the Earth when we project it onto a map. World map out of orange peel, styled in a polar stereographic projection. Made in #QGIS with #NaturalEarth data.

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Hans van der Kwast @qwast-gis.com · 18/11/2025

#30DayMapChallenge Day 18: Out of this world 🌍➡️🚀 I mapped #Mars using the blended MOLA + HRSC elevation dataset from #USGS #Astrogeology. Styled in #QGIS with Martian colours + hillshade, then explored the new #3D Globe view, works beautifully!

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Hans van der Kwast @qwast-gis.com · 17/11/2025

#30DayMapChallenge Day 17: A New Tool Tried #JupyterGIS, a #Python-based mapping tool in #JupyterLab, for mapping transboundary aquifers using open data from @igrac.bsky.social + #HydroSHEDS. Real-time map+code collaboration, live annotations, and reproducible workflows.

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Hans van der Kwast @qwast-gis.com · 16/11/2025

#30DayMapChallenge Day 16: Cells For today’s theme, I explored the spatial distribution of prisons across Europe. Using the QuickOSM plugin, I extracted locations from #OpenStreetMap, then visualized them as a heatmap in #QGIS. The map is set against a @maptiler.bsky.social vector tile backdrop.

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Hans van der Kwast @qwast-gis.com · 15/11/2025

#30DayMapChallenge Day 15: Fire 🔥 Mapped the density of fire stations in the Netherlands using #QGIS. #OpenData from #OpenStreetMap via QuickOSM plugin. Styled with #heatmap renderer. Fire service zones from @cbsstatistiek.bsky.social via #PDOK Services plugin.

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Hans van der Kwast @qwast-gis.com · 14/11/2025

#30DayMapChallenge – Day 14: Data Challenge #OpenStreetMap Although this year’s challenge doesn’t include a #VintageMap theme, I decided to bring a bit of history into today’s task. Using #QGIS, I styled current OpenStreetMap data of #RhodeIsland in the aesthetic of 19th‑century maps.

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Hans van der Kwast @qwast-gis.com · 13/11/2025

#30DayMapChallenge – Day 13: 10 minute map Map of the #Mara River Basin made in #QGIS with #HydroSHEDS #opendata and @maptiler.bsky.social #vectortiles. 🎥 Try it for your own catchment: youtu.be/hUgEYKz87gw

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Hans van der Kwast @qwast-gis.com · 12/11/2025

#30DayMapChallenge Day 12: Map from 2125 A worst‑case scenario of 2.5 m #SeaLevelRise reshapes the delta of the Netherlands. Made in #QGIS with SRTM90 via @opentopography.org, raster image styled polygons, @maptiler satellite raster tiles, and rendered in #3D using Qgis2threejs.

The Dutch delta with 2.5 m sea level rise

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Hans van der Kwast @qwast-gis.com · 11/11/2025

#30DayMapChallenge Day 11: Minimal Map #Rotterdam shown only by land & water, revealing how the port shifted from city center to the North Sea with Maasvlakte & Tweede Maasvlakte. Once the world’s largest port, now 3rd, still a global hub. Made with #QGIS, @maptiler.bsky.social and CBS data.

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Hans van der Kwast @qwast-gis.com · 10/11/2025

#30DayMapChallenge Day 10: Air 🌪️ Animated mesh layers of #hurricane tracks resembling Vincent van Gogh’s Starry Night. #HurricaneMelissa #Jamaica. Made with #QGIS. Data from #Copernicus #ECMWF

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Hans van der Kwast @qwast-gis.com · 09/11/2025

#30DayMapChallenge – Day 9: Analog 🍂 European QGIS User Groups on a natural canvas of autumn leaves. #GIS #Cartography

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Hans van der Kwast @qwast-gis.com · 08/11/2025

#30DayMapChallenge Day 8: Urban On #WorldUrbanismDay, I highlight the most paved municipality in the Netherlands: Krimpen aan den IJssel (43.3%), with Kortland-Noord at nearly 53%. This Imperviousness Map was made by Friedenau Society for Climate Adaptation Services, derived from AHN LiDAR + BGT.

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Hans van der Kwast @qwast-gis.com · 07/11/2025

#30DayMapChallenge Day 7: Accessibility 🌍✈️ I mapped visa-free travel: 🛫outbound (where citizens can go) and 🛬inbound (who countries let in). It reveals global mobility inequality. 📊 Data: 2025 Passport Index 🛠️ Made with QGIS #VisaFreeTravel #Deglobalisation #QGIS #GIS #DataViz

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