People
WISE Lab Director
Heejun Chang, Professor of Geography & Associate Dean for Research and Graduate Programs, Ph.D. 2001. The Pennsylvania State University
Research Interests: Hydrology and water resources, with focus on human modification of the hydrologic system and interactions among climate change, land use change, and water management as they affect water quantity, quality, demand, floods, and hydrologic ecosystem services. As a broadly-trained geographer, he uses multiple methods from process-based modeling to spatial statistics to field observations to interviews for understanding complex transdisciplinary water issues across scales.
Professional Services: Editor, The Professional Geographer
Steering Committee Member, Commission for Water Sustainability, International Geographical Union
Contact: (503) 725-3162 changh@pdx.edu
Post-doctoral scholar
Jason Sauer (PhD, ASU 2022) Urban flood risk and nature-based solutions
Current Students
Junjie Chen (PhD Candidate, entered fall 2019) Effects of forest fires on stream temperature at the watershed scale
Michael Krochta (PhD Candidate, entered fall 2022) Downstream effects of beaver restoration on water quality
Miles Mayer (MS candidate, entered fall 2022) Effects of stream restoration on water quality in a suburban watershed
Anthony Heatherly (MS candidate, entered fall 2023)
Matt Guziejka (MS candidate, entered fall 2023)
Former students
Grisha Post (MS, summer 2023) Disappeared Streams and Flood Risk in Atlanta, Georgia, Baltimore, Maryland, Phoenix, Arizona, and Portland, Oregon
Arun Pallathadka (PhD, spring 2023) An Integrated Analysis of Urban Sustainability in Portland: Issues, Indicators, Stakeholders, and Geospatial Assessment (now works for EDP Renewables North America)
William Long (MS, summer 2022) Spatial Analysis of Burn Severity and Streamflow Response in the Western CONUS (now works for US Geological Survey as a Hydrologist)
Rebecca Talbot (MS, winter 2022) Spatial and Seasonal Variations of Microplastic Concentrations in Portland’s Freshwater Ecosystems (now works for Oregon Department of Environmental Quality as Water Quality Analyst).
Janardan Mainali (Ph.D. Summer 2020) Spatial statistical approaches to modeling water quality (now works for Streamline Technologies).
Alexander Ross (Ph.D. Spring 2020) Sociohydrology of the Hood River in a changing climate and population growth (now works for Portland State University as a senior instructor).
Ashley Baker (MS Summer 2019) Annual and Seasonal Variation in Hydrologic Performance of Ecoroofs of Multiple Depths, Portland, OR (now works for Sunrise Water Authority as GIS specialist)
Daniel Larson (PhD Spring 2019) Attitudes, Behavior, and Archetypes in the Clackamas River Basin: A Model of Water Customer Analysis and Outreach for Watershed Protection and Conservation (now works for Kaiser Permanente)
Emma Brenneman (MS Spring 2019) Hydrologic trends and Spatial Relationships of Stream Temperature and Discharge in Urbanizing Watersheds in the Portland Metropolitan Area of the Pacific Northwest (now works for ICF International)
Junjie Chen (MS Spring 2019) Dynamics of Wet-Season Turbidity In Relations to Precipitation, Discharge, and Land Cover in three urbanizing watersheds, Oregon (now works for HIT as Hydrologist)
Jeff Ramsey (MS Spring 2019) Tree Canopy Cover and Potential in Portland, Oregon: A Spatial Analysis of the Urban Forest and Capacity for Growth (currently works for the City of Portland as Botanic Specialist)
Benjamin Fahy (MS Winter 2019) Evaluating the Impact and Distribution of Stormwater Green Infrastructure on Watershed Outflow (now works for Bonneville Power Administration as Operations Research Analyst)
Zbigniew Grabowski (PhD Summer 2018) Removing Dams, Constructing Science: Watershed Restoration Through A Socio-Eco-Technical Systems Lens (now works for University of Connecticut as Associate Professor)
Gunnar Johnson (PhD Summer 2018) Rock Glaciers of the Contiguous United States: Spatial Distribution, Cryospheric Context, and Riparian Vegetation (now works for US Environmental Protection Agency, Region 10)
Katelyn Michelson (MS Summer 2018) Examining the Spatial Characteristics of Pluvial Flooding Through Citizen Science in Portland, Oregon (now works for PGE as Assistant Project Manager)
Whitney Vonada (MS Summer2018) Assessing Spatiotemporal Stream Temperature Trends and Key Drivers through Integrated Longitudinal Thermal Profiling and Stationary Data Logger Methodology on the Upper Chehalis River, WA (now works for US Forest Service)
Alexis Cooley (MS Summer 2017) Detecting change in rainstorm properties from 1977-2016 and associated future flood risks in Portland, Oregon (Now works for State of Oregon as Clean Water Fund Project Officer)
Alex Nagel (MS Summer 2017) Analyzing Dam Feasibility in the Willamette River Watershed (Now works for Famers Conservation Alliance as Natural Resource Specialist).
Zack Herzfeld (MS 2017) Effects of Spatially Distributed Stream Power on Check Dam Function in Small Upland Watersheds: A Case Study of the Upper Laja River watershed, Guanajuato, Mexico (Now works for Ecosystem Sciences Foundation as Environmental Scientist)
Ryan Bonnette (MS 2017)The Effects of Scale Variation on Single-Family Residential Water use in Portland, Oregon (now works for Quality Transportation Services, Inc as GIS Applications Specialist)
Eric Watson (MS, Summer 2016) Use of distance weighted metrics to investigate landscape-stream temperature relationships (now works for Oregon Department of Transportation)
Mike Psaris (MS, Spring 2014) Assessing hydrologic and water quality sensitivities to precipitation changes, urban growth, and land management using SWAT (Now works for CleaRESULT)
Betsy Breyer (MS, Winter 2014) Household water demand and neighborhood context: A multi-level approach (Now works for the University of Texas A&M as Assistant Professor)
Wes Hoyer (MS, Fall 2013) Scenario development and analysis of freshwater ecosystem services under land cover and climate change in the Tualatin and Yamhill River basins, Oregon. (Now works for US Forest Service)
Willow Campbell (MS, Summer 2013) Spatial analysis of climate and winegrape production in winegrape growing regions of Oregon, United States of America
Madeline Steele (MS, Winter 2013) Effects of HRU size on PRMS performance in 30 western US basins (Now works for TriMet)
Matt Wood (MS, Summer 2012) Streamflow analysis and a comparison of hydrologic metrics in urban streams (Now works for ICF International)
Cale Garrett (MS, Spring 2012) Evalaution of streamflow restoration efforts by Water Trusts in Oregon (Now works for Portland Energy Conservation, Inc.)
Bethany Pratt (MS, Summer 2011) Effects of land cover, topography, and built structure on seasonal water quality at multiple spatial scales
James Monzione (MS, Spring 2011) Urban stromwater management in Portland, Oregon (Now works for US Army Corp of Engineers)
Lily House-Peters (MS 2010) Modeling future residential water demand: a case study of Hillsboro, Oregon (now works for California State University - Long Beach as Associate Professor)
Sarah Praskievicz (MS 2009) Impacts of Climate Change and Urban Development on Water Resources in the Tualatin River Basin (now works for North Carolina State University as Associate Professor)
Jon Franczyk (MS 2008) THE EFFECTS OF CLIMATE CHANGE AND URBANIZATION ON THE RUNOFF OF THE ROCK CREEK BASIN (now works for DOGAMI)
Alex Levell (MS 2006) Monitoring the form and process of a stream restoration project in an urbanizing watershed: A case study of Kelley Creek, OR (now works for Lummi Natural Resources)
Mike Boeder (MS 2006) INTERACTIONS AMONG TRENDS IN OXYGEN DEMAND, LAND COVER CHANGE, AND WATER QUALITY MANAGEMENT FOR THE ROCK CREEK WATERSHED, OREGON (now works as an independent consultant)
David Graves (MS 2005) An Assessment of the Impacts of Climate Change on the Upper Clackamas River Basin with a Distributed Hydrologic Model (now works for CRITFC)