NWDTW 2026: Full Schedule

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8:00am CDT

Introduction to TRiVIA: The Toolbox for River Velocimetry using Images from Aircraft

Wednesday July 22, 2026 8:00am - 8:50am CDT

The Toolbox for River Velocimetry using Images from Aircraft (TRiVIA) provides an end-to-end workflow for mapping velocities in rivers from videos or image sequences. The software includes modules for extracting frames, stabilizing and geo-referencing images, defining a region of interest, enhancing images, performing particle image velocimetry (PIV), visualizing results, assessing accuracy, and calculating discharge. In this introductory session, we will provide a brief overview TRiVIA's capabilities using an example data set from a river in Oregon collected using an uncrewed aircraft systems (UAS). Our target audience is any hydrologist who wants to learn about image-based techniques for estimating flow velocities in rivers.

Speakers

Paul Kinzel

Hydrologist, USGS

I am a hydrologist with the Hydrologic Remote Sensing Branch. My research interests involve evaluating innovative techniques for measuring velocity and bathymetry in rivers. I have expertise in fluvial geomorphology, surveying and mapping river channels, and hydrodynamic modeling... Read More →

Wednesday July 22, 2026 8:00am - 8:50am CDT
BCC - Mason (33 Class / 60 Theater)

COMPUTER TOOLS

Length 50 minutes

4:00pm CDT

10 Things I Hate About NWDi/WADERS

Wednesday July 22, 2026 4:00pm - 4:50pm CDT

BCC - Central Bank (39 Class / 60 Theater)

The NWDi development team wants to hear why you don’t use NWDi/WADERS and roadblocks/usability issues you come up against. We want to hear your ideas for enhancements. NWDi team plans to take these ideas/issues to drive development and communication on the application.

NWDi/WADERS is an interactive web application that brings together an array of data and approaches to view and manage the USGS water network operations and internal business operational systems in a unified, standardized way for real-time management, resource planning, and situational awareness.

Speakers

Julia Prokopec

Hydrologist/FIM Coordinator/Assistant Flood Coordinator, USGS

Julia Prokopec is a hydrologist in the Web Informatics & Mapping Team (WIM) in the Upper Midwest Water Science Center in St Paul, MN. She works with partners and lead developers to coordinate development and project management within WIM. She is also the USGS Flood Inundation Mapping... Read More →

Sonya Vasquez

Hydrologic Technician, NV WSC

Sonya Vasquez is a Hydrologic Technician with the Nevada Water Science Center. She serves as Product Owner for SIMS/RMS within NWIS and oversees the Discontinued Station – Capital Improvement (DSCI) product under the OSD Hydrologic Networks Branch Software and Field Computing Team... Read More →

Chuck Hansen

Hydrologist, USGS

Chuck Hansen is a Hydrologist with the California Water Science Center in Sacramento. He leads
a team of software and hardware engineers focusing on remote sensing and data delivery.

Ashley Heath

Wednesday July 22, 2026 4:00pm - 4:50pm CDT
BCC - Central Bank (39 Class / 60 Theater)