NWDTW 2026: Full Schedule

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8:00am CDT

From Field Survey to Plotted Cross-Section: SVMobileAQ Data Collection and AreaComp3 Visualization

Thursday July 23, 2026 8:00am - 8:50am CDT

BCC - Birmingham (65 Class / 100 theater)

Accurate and efficient cross-section surveys are essential for maintaining high-quality stage-discharge ratings and index velocity gage operations. This presentation demonstrates a streamlined workflow for conducting differential level surveys of river cross-sections using the SVMobileAQ mobile application and importing the data into AreaComp3 software for visualization and analysis.
The session will cover the fundamentals of setting up a conventional differential level instrument (level gun) and collecting cross-section data in the field with SVMobileAQ. Attendees will then learn how to seamlessly import the survey data into AreaComp3 to generate plotted cross-sections referenced to gage datum.
Although commonly applied to index velocity gages, this approach provides broader benefits for streamgaging programs, including evaluation of control features at stage-discharge stations, detection of changes in channel geometry through overlay of historical surveys, and investigation of discrepancies by comparing survey results with ADCP bathymetry.
This practical, field-to-office workflow offers an accessible and efficient method for improving the quality and utility of cross-section data in water resources monitoring.

Speakers

Arthur Lilienthal

Hydrologist, USGS

Thursday July 23, 2026 8:00am - 8:50am CDT
BCC - Birmingham (65 Class / 100 theater)

GNSS/SURVEYING

Length 50 minutes
Can't teach Monday, AM;Monday, PM;

9:00am CDT

Year in Review: Summary of Hydroacoustics in WY25

Thursday July 23, 2026 9:00am - 9:20am CDT

BCC - Birmingham (65 Class / 100 theater)

How many measurements did the USGS make last year? What type of instrument is the most common? Join fellow hydroacoustics enthusiasts in this beloved annual session to find out who joined the 1 million cfs club in WY25 and other interesting tidbits.

Speakers

Justin Boldt

Hydrologist, USGS

Justin is a Hydrologist for the USGS Ohio-Kentucky-Indiana Water Science Center in Louisville, KY. He began his career with the USGS in 2010 as a student working for the Office of Surface Water out of the Urbana, Illinois office. In 2013, he graduated from the University of Illinois... Read More →

Thursday July 23, 2026 9:00am - 9:20am CDT
BCC - Birmingham (65 Class / 100 theater)

HYDROACOUSTICS

Length 20 minutes
Can't teach Monday, AM;Monday, PM;

9:30am CDT

Break

Thursday July 23, 2026 9:30am - 10:00am CDT

BCC - Birmingham (65 Class / 100 theater)

Thursday July 23, 2026 9:30am - 10:00am CDT
BCC - Birmingham (65 Class / 100 theater)

10:00am CDT

Use of Remote Boats with ADCPs

Thursday July 23, 2026 10:00am - 10:20am CDT

BCC - Birmingham (65 Class / 100 theater)

Remote control (RC) boats are increasingly used to deploy acoustic Doppler current profilers (ADCPs) for streamflow measurements. These platforms can enhance safety, reduce operational costs, and improve field efficiency. However, they also introduce potential data quality concerns. Additional quality assurance is required to detect and mitigate issues such as electromagnetic interference, air entrainment, and flow disturbance.
This presentation will outline the advantages and limitations of RC boat based ADCP deployments, present examples of both high and low quality datasets, and highlight practical steps users can take in the field and during post processing to address common data quality challenges.

Speakers

Travis Knight

Thursday July 23, 2026 10:00am - 10:20am CDT
BCC - Birmingham (65 Class / 100 theater)

HYDROACOUSTICS

Length 20 minutes

10:30am CDT

Index Velocity Rating Departure Causes from Pitch and Roll

Thursday July 23, 2026 10:30am - 10:50am CDT

BCC - Birmingham (65 Class / 100 theater)

Small changes in an ADVM position can cause big problems with your index velocity rating. Changes in pitch and roll can change from poor mount design, broken mounts, debris snags, or ADVM installation error. When pitch and roll changes occur, a different sample volume is measured which can cause departures in your index velocity rating. ADVM movement could be difficult to catch, but reviewing ADVM data in the field can explain and potentially prevent rating issues. This talk will discuss how to identify rating problems caused by changes in pitch and roll along with best practices for shifting index velocity ratings due to pitch and roll.

Speakers

David Segal

Thursday July 23, 2026 10:30am - 10:50am CDT
BCC - Birmingham (65 Class / 100 theater)

HYDROACOUSTICS

Length 20 minutes

11:00am CDT

Catching up with the HaWG

Thursday July 23, 2026 11:00am - 11:20am CDT

BCC - Birmingham (65 Class / 100 theater)

Join us for a focused 10-minute presentation highlighting the latest research and development initiatives from the Hydroacoustics Work Group (HaWG). Following this, attendees will engage in a dynamic 20-minute open forum, offering the chance to connect directly with HaWG experts, ask questions, and share your operational needs. Don’t miss this opportunity to gain valuable insights and support from the leading voices in hydroacoustics.

Speakers

Travis Knight

Justin Boldt

Hydrologist, USGS

Thursday July 23, 2026 11:00am - 11:20am CDT
BCC - Birmingham (65 Class / 100 theater)

HYDROACOUSTICS

Length 50 minutes

11:30am CDT

Lunch

Thursday July 23, 2026 11:30am - 1:00pm CDT

BCC - Birmingham (65 Class / 100 theater)

Thursday July 23, 2026 11:30am - 1:00pm CDT
BCC - Birmingham (65 Class / 100 theater)

1:00pm CDT

Mid-Section Measurements in QRevMS - Post-Processing and Measurement Review

Thursday July 23, 2026 1:00pm - 1:50pm CDT

BCC - Birmingham (65 Class / 100 theater)

QRevMS is an application used for processing and reviewing ADCP midsection discharge measurements. Like QRev, QRevMS processes data loaded from the manufacture data files using automated quality checks and data filtering. This talk will discuss the workflow of the application, specifically related to post-processing and measurement review. Improvements and updates to the software will also be discussed.

Speakers