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NWDTW 2026
Venue: BCC - Lackey (54 Tiered Class Only) clear filter
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Wednesday, July 22
 

8:00am CDT

Remotely Operated Smart Gages
Wednesday July 22, 2026 8:00am - 8:50am CDT
As site loads increase and resources stay tight, many technicians are being asked to manage more than ever before.

This session looks at how modern gaging technology—cameras, remote communications, enhanced power systems, and smarter backend tools—can help ease that burden by reducing unnecessary trips and highlighting what actually needs attention.
Speakers
CG

Chris Grindle

Physical Scientist, USGS
Started in the USGS with the VA/WV WSC in 2016. Currently work for the NYWSC in the research to operations section. I enjoy trying to use new methods and technologies to provide more high quality and relevant data. My focuses are in gage construction, equipment design and programming... Read More →
Wednesday July 22, 2026 8:00am - 8:50am CDT
BCC - Lackey (54 Tiered Class Only)

9:30am CDT

Break
Wednesday July 22, 2026 9:30am - 10:00am CDT

Wednesday July 22, 2026 9:30am - 10:00am CDT
BCC - Lackey (54 Tiered Class Only)

10:00am CDT

ICE-Edge: Computing Continuous Under-ice Discharge on the Edge
Wednesday July 22, 2026 10:00am - 10:20am CDT
As of Jan 5, 2026, 1,185 of the 9,004 USGS streamgages were ice-affected - approximately 13.2% of our assets that lack the capacity to deliver real-time discharge. Existing USGS under-ice methods require hours to complete, are cost prohibitive, lack the capacity to deliver continuous discharge time series, and place hydrographers at risk. ICE-Edge computes real-time under ice discharge on the “edge” (think by the riverbank) by integrating a RaspberryPi (RPi) computer, python code, uplooking Acoustic Doppler Velocity Meter (u-ADVM), FirstNet modem, and leveraging the probability concept discharge algorithm.
Wednesday July 22, 2026 10:00am - 10:20am CDT
BCC - Lackey (54 Tiered Class Only)

10:30am CDT

Some Tools for Assessing Drought
Wednesday July 22, 2026 10:30am - 11:20am CDT
This session will cover a few tools for assessing drought, with examples from the record statewide Texas drought of 2011.
Speakers
avatar for Karl Winters

Karl Winters

National Flood Coordinator, USGS
Karl serves as the National Flood Coordinator, and a Surface-Water Specialist in the Hydrologic Networks Branch. He provides operational support and coordination of USGS flood response, as well as training and support for flood documentation and modeling, and computation of streamflow... Read More →
Wednesday July 22, 2026 10:30am - 11:20am CDT
BCC - Lackey (54 Tiered Class Only)

11:30am CDT

Lunch
Wednesday July 22, 2026 11:30am - 1:00pm CDT

Wednesday July 22, 2026 11:30am - 1:00pm CDT
BCC - Lackey (54 Tiered Class Only)

2:30pm CDT

Introduction to the Salt Dilution Streamflow Method
Wednesday July 22, 2026 2:30pm - 3:20pm CDT
The salt dilution method is a technique for measuring streamflow by injecting a trace pulse of sodium chloride (NaCl) into a stream, allowing it to fully mix, and tracking the downstream dilution through changes in specific conductance. Because salt dilution performs well in turbulent or irregular flow conditions where velocity–area methods often fail, it is a practical option for difficult‑to‑measure sites. This presentation introduces the salt dilution method, including how to identify suitable site conditions, the core field procedures for making salt dilution measurements, and the principles behind salt dilution discharge calculations.
Speakers
avatar for Lewis Craghead

Lewis Craghead

Hydrologic Technician, U.S. Geological Survey
Lewis Craghead joined the South Atlantic WSC in 2016 as a Pathways Intern while finishing a water resources program at the University of Georgia. As a hydrologic technician, he runs a surface water field trip in metro-Atlanta with the Urban Hydrologic Unit which focuses on continuous... Read More →
Wednesday July 22, 2026 2:30pm - 3:20pm CDT
BCC - Lackey (54 Tiered Class Only)

3:30pm CDT

Frozen SUSHI (Scientists Using Salt Hydrometric Instruments): Salt Dilution Tracer Discharge Measurements Under Ice
Wednesday July 22, 2026 3:30pm - 3:50pm CDT
A presentation on the application of salt dilution tracer discrete discharge measurements in under ice conditions. An overview of the method and workflow is discussed. Results of under ice measurements will be reviewed emphasizing the successes, technical challenges, and the lessons learned. Including a further discussion on improving accuracy and repeatability of the method in the future.
Speakers
avatar for Tony Trease

Tony Trease

Hydro Tech, USGS
Hydro Tech at the Lakewood Field Office. Colorado WSC Hydracoustics Specialist. Rocky Mountain SUSHI. 17 years with the USGS.
Wednesday July 22, 2026 3:30pm - 3:50pm CDT
BCC - Lackey (54 Tiered Class Only)

4:00pm CDT

Peak Flow Visualization Tools
Wednesday July 22, 2026 4:00pm - 4:50pm CDT
USGS peak-flow data is one of the most important datasets used to assess flood risk in the United States. This presentation will discuss tools for visualizing USGS peak-flow data and indirect discharge measurements to improve accessibility of USGS flood data. These tools can be used to easily find what USGS peak-flow data are available in an area to inform operations during and after floods events and identify data for use in flood frequency studies.
Speakers
SS

Seth Siefken

Hydrologist
Seth Siefken is a civil engineer based in Helena, Montana. He's been working with USGS since fall 2018, where his projects have included flood frequency analysis, water quality monitoring, writing software, and field data collection. He is currently the maintainer of the USGS PeakFQ... Read More →
Wednesday July 22, 2026 4:00pm - 4:50pm CDT
BCC - Lackey (54 Tiered Class Only)
 

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