SonTek, a Xylem Brand

06/18/2026

Download: https://info.xylem.com/view-castaway-data-ai.html

What happens when CastAway-CTD data meets the right AI prompt?

A much faster way to visualize transects, spot mixing or stratification, and create figures that are actually presentation-worthy. This new technical note walks through the process step by step and shows how to move from raw profiles to high-quality cross sections with a lot less effort.

Very practical. Slightly nerdy. Genuinely cool. Download the paper to see it in action!

06/11/2026

Could discharge and water-quality data really be collected together from an autonomous surface vehicle on the Mississippi?

If you missed our live webinar—or want to revisit the data—the full recording is now available. Learn how the SonTek-M9 ADCP, Surfbee autonomous platform, and YSI EXO sonde worked together to complete this first-of-its-kind deployment, and explore the workflow, results, and lessons learned from the field.

Watch the recording, download the presentation, and access the attendee Q&A document with expanded responses from our presenters.

Download the presentation (PDF): https://info.xylem.com/sontek-mis...

06/08/2026

Download paper here: https://bit.ly/ctd-confluence-diffluence-study

SonTek’s CastAway-CTD was the primary instrument used to study river mixing at the Chaktomuk Junction in Phnom Penh, Cambodia—a fascinating confluence-diffluence where the Mekong and Tonle Sap rivers meet and then split again. Using conductivity tracing, the study shows how the CastAway-CTD helped reveal changing flow structure, vertical stratification, and water-source movement in this highly dynamic system.

Questions about the CastAway-CTD? -> [email protected]

We are also pleased to feature guest contributor Vuthy Chork, Lecturer & Researcher at the Research and Innovation Center, Institute of Technology of Cambodia. One especially interesting detail from the paper: the Tonle Sap River is one of the few rivers in the world that reverses its flow seasonally, making this study area one of Southeast Asia’s most dynamic natural mixing zones—and a strong example of how the CastAway-CTD can support meaningful water quality and hydrologic research.

05/27/2026

The best field data starts with the right guidance. This month in Know Your PRO, we’re featuring Kevin Labbe, a Xylem expert known for practical training and deep experience in acoustic hydrometry.

Thanks for being part of our family for over 23 years, Kevin!

05/06/2026

A great field session with Salt River Project staff at two important Arizona locations: the Salt River below Saguaro Lake and the canal below Granite Reef Dam in Mesa.

The training focused on validating, planning, and accounting for water moving through rivers, canals, and streams, along with bathymetric data collection to support dredging near the dam and sediment management in the canals. In a system like SRP’s, that kind of data matters. Granite Reef Diversion Dam directs water from the Salt and Verde rivers into the Arizona and South canals, which help deliver water for irrigation and drinking water across the Phoenix area.

The training was led by Senior Applications Engineer Kevin Labbe and Jessica Latzko, Technical Sales for the region. A practical look at how better visibility into bathymetry and sediment can support smarter maintenance decisions in the field.

04/30/2026

A recent field training session at Rio Trancão in Lisbon provided a great opportunity to demonstrate the SonTek-RS5 in operation with the Surfbee autonomous platform.

Led by SonTek Applications Engineer Rob Thomson and supported by Eloy Abascal, European Sales Leader, the session focused on practical ADCP use in a real monitoring environment. Participants included representatives of Laboratório Nacional de Engenharia Civil, I.P. (LNEC) and local sales representative Instru Portugal. The Trancão River connects to the Tagus estuary, making it a fitting setting for hands-on training and field validation work.

A nice example of how autonomous systems, field-proven instrumentation, and local collaboration come together to support confident data collection in real conditions.

04/28/2026

NEXT WEEK! Register: https://www.ysi.com/webinars/cross-river-discharge-and-water-quality-measurement-at-mississippi-scale

What does it take to collect both discharge and water-quality data—autonomously—on a river the size of the Mississippi? In this session, we’ll show how the SonTek-M9, Surfbee - Autonomous Surface Vessels, and YSI, Inc. EXO worked together to make it happen, along with the data and key takeaways from this first-of-its-kind deployment.

The live event takes place on Wednesday, May 6, 9:00 am PDT. Can't make it? Register, and we'll send you a link to the recorded event!

04/22/2026

We enjoyed being part of this week’s ALERT Conference in Reno, including the afternoon field trip stop at the Truckee River — Lake Tahoe’s only outlet and a vital river for the region.

Attendees had the chance to see SonTek ADCPs and YSI water quality instrumentation in action through three live demo stations: a Surfbee ASV with a SonTek-M9 collecting discharge data, a YSI EXO sonde collecting water quality data, and an RS5 deployed on a traditional tagline.

Matt Klipfel started the session by sharing background on the Truckee River and the value of precise hydrologic data for regional water management. Thanks to Matt Klipfel, Diego Davis, Dr. Xue Fan, Isaac Jones, and Surfbee’s Evan Leahy for helping make it a great field demonstration.

04/20/2026

All year long in 2026, we’re celebrating the people behind the data. This month in our Know Your PRO series, meet Daniel Wagenaar, Senior Hydrologist—an experienced SonTek technology expert who’s spent decades helping customers tackle real-world flow measurement challenges.

Talk to your Pro today! -> [email protected]

04/16/2026

Register for this in-person workshop:
https://www.ysi.com/events/smart-solutions-for-water-quality-and-flow

Join us on May 20 for our Xylem Environmental Technology Workshop, a free hands-on training event for water monitoring professionals.

Hosted in partnership with Fondriest Environmental, Inc., at its Field Station in Xenia, Ohio, this workshop will feature practical demonstrations and applied training focused on real-world monitoring challenges. Attendees will get hands-on experience with popular YSI, Inc. instruments, including the EXO and ProDSS, as well as a bathymetric data-collection demo using the SonTek-M9 and Surfbee.

It’s a great opportunity to build skills, explore new technology, and connect with others in the field—while picking up ideas and tools you can put to work right away.

Questions about the event? We’re happy to help: [email protected]