Jeff Walker is an environmental data scientist and engineer with 15 years of experience in environmental research and consulting.

He received a PhD in Environmental and Water Resources Engineering from Tufts University in 2014. His dissertation entitled “Interactive Web Applications for Environmental Modeling” demonstrated novel approaches to web-based data visualization and modeling interfaces designed to improve how we use and understand environmental models.

Since then, he was built numerous web-based databases, modeling tools, and interactive data visualizations for making environmental datasets and models more accessible and easier to use.

He has collaborated with scientists and researchers at a number of federal government agencies including the USGS, NOAA, and USFWS as well as non-profit organizations such as the Mystic River Watershed Association.

He is the primary application developer of EcoSHEDS, a web-based platform supported by USGS for integrating hydro-ecological datasets, models, and data visualization tools to support environmental conservation.

Dr. Walker also specializes in hydrologic and water quality modeling with a focus on addressing nutrient loading and eutrophication of lakes and rivers. He has completed a number of studies in the Mystic River Watershed (MA), Upper Klamath Lake (OR), Lake Onondoga (NY), the lakes, wetlands, and stormwater treatment areas of South Florida, and many others.

  • 2014, PhD, Tufts University
  • 2007, MEng, MIT
  • 2006, BS, Cornell University


Below is a list of the primary languages, frameworks, and toolkits I use on a regular basis:


Jeffrey D Walker, PhD

Environmental Data Scientist and Engineer