PRESENTATION INSTRUCTIONS: Please click here for oral presentation guidelines and click here for poster presentation guidelines.
Tuesday, May 12th concurrent sessions
| 8:00am – 9:15am | Keynote 1 | |
| 9:15am – 9:30am | BREAK | BREAK |
| Track 1 1A: General Hydrogeology 1 |
Track 2 1B: GW and SW Interaction |
|
| 9:30am – 9:50am | Groundwater-Induced Slope Instability on the Tsawwassen Peninsula | Evaluating the hydrologic impacts of site development requires an accurate understanding of both surface and subsurface conditions |
| 9:50am – 10:10am | A New Approach to Deep-Well Infiltration Testing and Design: Case Study in Seattle, WA | Field Methodology for Monitoring Surface Water and Groundwater Interactions in Agricultural Settings |
| 10:10am – 10:30am | Hydrologic State Shifts Across the Volcanic Cascade Range | Evaluating the accuracy of base-flow estimation techniques in catchments across Oregon and Washington |
| 10:30am – 10:50am | Groundwater Recharge and Water Budget Assessment for San Juan County, Washington | Design Considerations and Implementation Techniques for In Situ Applications of Modified Clay for PFAS Sequestration |
| 10:50am – 11:00am | BREAK | BREAK |
| 2A: General Hydrogeology 2 | 2B: Environmental Contamination 1 | |
| 11:00am – 11:20am | Sampling results for WSDA’s Regional Groundwater Quality Monitoring Program | Colloidal Silica Gels for Blocking Vertical Flow in Long-Screened Wells |
| 11:20am – 11:40am | Integrating Field Testing, Groundwater Flow Modeling, and Nitrate Tracer Evidence to Inform Indirect Groundwater Recharge Design | Wood Waste-Related Contamination at VCP Sites in Western Washington |
| 11:40am – 12:00pm | Statistical Characterization of Groundwater Composition | When 2D Is Not Enough: Three-Dimensional and Boundary-Condition Controls on Groundwater Flooding and Salinity in Diked Coastal Lowlands |
| 12:00pm – 12:20pm | Groundwater, Surface Water, and Precipitation at the Olympic Peninsula | Transitional Zone Monitoring Approaches at Marine and Riverfront Cleanup Sites in the Pacific Northwest |
| 12:30pm – 1:30pm | LUNCH | LUNCH |
| 3A: Models and Modeling 1 | 3B: Risk Assessment | |
| 1:30pm – 1:50pm | ARTi3D: A New Software Package for Reactive Transport Modeling | From Conflict to Collaboration: Safeguarding Redmond’s Urban Aquifer |
| 1:50pm – 2:10pm | The Distributed Drawdown Function: An Analytical Tool for Estimating Effects of Pumping Adjacent to Complex Stream Networks | Supporting Agricultural Producers in Groundwater Protection: A Suite of Nutrient Management Tools |
| 2:10pm – 2:30pm | The Whatcom Groundwater Model: Status and Planned Refinements of the Groundwater/Stream-Depletion Management Tool | Integrated Hydrogeologic Investigations, Groundwater Modeling and Decision Support Tool Development in the Livermore Valley Basin |
| 2:30pm – 2:50pm | Recent Developments in Streamflow Forecasting with the Baseflow Separation Model | Aquifer Storage and Recovery in Washington State – Is It Working? |
| 2:50pm – 3:00pm | BREAK | BREAK |
| 4A: Models and Modeling 2 | ||
| 3:00pm – 3:20pm | An introduction to NHM-Assist: A tool for visualizing and evaluating the USGS National Hydrologic Model | |
| 3:20pm – 3:40pm | Methods for modifying the USGS Geospatial Fabric for a regional recharge modeling application, Oregon, USA | |
| 3:40pm – 4:00pm | Ensemble methods for parameter estimation and uncertainty quantification for a watershed model | |
| 4:20pm – 4:30pm | BREAK | BREAK |
| 4:30pm – 6:30pm | *Poster Session & Reception |
Wednesday, May 13th concurrent sessions
| 7:00am – 8:00am | Symposium Committee Steering Breakfast | |
| 8:00am – 9:00am | Keynote 2 | |
| 9:00am – 9:15am | BREAK | |
| Track 1 5A: Geochemistry |
Track 2 5B: Water Resources 1 |
|
| 9:15am – 9:35am | Geochemical Controls on Arsenic Attenuation in a Tidal Estuary: Insights from Field Data and Reactive Transport Modeling | How urban stormwater systems shape streamflow and water quality in streams in King County, Washington |
| 9:35am – 9:55am | Groundwater chemistry in the Columbia River Basalt Group aquifer | Chasing the Yakima Basin’s “Sixth Reservoir” with Groundwater Storage |
| 9:55am – 10:15am | Late Pleistocene high-volume, regional recharge to the Columbia River Basalt groundwater system of eastern Oregon and Washington | Nisqually Watershed Planning using Large-Scale Surface and Groundwater Modeling |
| 10:15am – 10:35am | Integrating Site-Specific Geochemistry and Reactive Transport Modeling to Support Post-closure Care Decisions at a Municipal Landfill | Participatory Modeling of Reductions in Pumping to Stabilize Declining Groundwater Levels in the Harney Basin, Oregon |
| 10:35am – 10:45am | BREAK | BREAK |
| 6A: Stable Isotopes | 6B: Water Resources 2 | |
| 10:45am – 11:05am | Cosmogenic Isotopes of Halogens in the Cascades of Washington | Water use data and science in the USGS: from national-scale modeling to regional Puget Sound water use estimates |
| 11:05am – 11:25am | Inferring spatial and temporal qualities of groundwater recharge sources using water stable isotopes in the Klamath River Basin, Oregon | Understanding the Possible Causes of Many Dry Wells Recently Reported Near Lake St. Clair |
| 11:25am – 11:45am | Identifying Anthropogenic Contributions to Saline Groundwater Using Sulfate CSIA and Geochemical Inverse Modeling | Evaluating and Updating Groundwater-Recharge Estimates for Oregon Basins |
| 11:45am – 12:05pm | Stable Isotopes as a Tool for Deciphering Hydrogeologic Relationships in the Yakima River Basin | Post-wildfire impacts to water supply in Washington state |
| 12:15pm – 1:15pm | LUNCH | LUNCH |
| 7A: Climate | 7B: Hydrostratigraphy | |
| 1:30pm – 1:50pm | Climate Model Effects on Stormwater Facility Size Within WWHM | Hydrogeologic framework and groundwater chemistry near the Yakima Training Center, Washington |
| 1:50pm – 2:10pm | Which Climate Model Should You Choose? A Brief Guide to Why “It Depends” | A Hydrogeologic Model of the Duwamish River Valley utilizing Leapfrog Works |
| 2:10pm – 2:30pm | Open-Loop Ground Source Heat Pumps – Hydrogeology and Modeling | New Hydrostratigraphic Interpretations of a Portion of the Black Diamond Quadrangle |
| 2:30pm – 2:40pm | BREAK & PASSPORT AWARDS | BREAK & PASSPORT AWARDS |
| 8A: PFAS | 8B: AI and Machine Learning | |
| 2:40pm – 3:00pm | Assessing and Modeling PFASs Leaching to Groundwater Pathway | Leverage data assimilation and machine learning to improve the forecast of reservoir water temperature and thermal release |
| 3:00pm – 3:20pm | Integrated Geophysical Characterization of PFAS Transport Pathways in the Columbia River Basalt Group | AI-Enabled Decision Support for Groundwater–Surface Water Systems to Protect Drinking Water and Reduce Public Health Risk in the Pacific Northwest |
| 3:20pm – 3:40pm | Yakima Training Center Per- and Polyfluoroalkyl Substances (PFAS) Remedial Investigation Time Critical Removal Actions – Installation of Residential Whole-Home Point-of-Entry-Treatment (POET) Systems, Yakima, WA | Groundwater-Level Mapping and Monitoring Network Evaluation Using Diffusion Models |
| 3:40pm – 4:00pm | PFAS in the Greater Lake Washington Watershed: Assessment of the Groundwater Pathway | Large Language Model (LLM)-Assisted Access to Subsurface and Contamination Information |
| 4:00pm – 4:20pm | Panel Q&A | Panel Q&A |