John Greene

John's USGS career began in 2005 as a student technician with the Minnesota Water Science Center (MWSC) in Mounds View, Minnesota. Upon graduation, he was converted to a full-time permanent Studies technician, a position he held for five years. His responsibilities included streamflow measurements, water-quality sampling and monitoring, biological sampling, and well drilling. For three years, he led field sampling efforts for the Upper Mississippi Study Basin as part of the National Water Quality Assessment (NAWQA) Nutrient Enrichment Effects Topic (NEET). He also led field efforts for several state-level water quality sampling projects, including sampling the effluent of over 60 wastewater treatment plants across the state.

In 2010, he transferred to the Grand Rapids, Minnesota Field Office, where he focused on surface water streamgaging, operating more than 20 streamgages in Northwest Minnesota. For seven years, he served as the lead well driller for the MWSC. A primary project during this time was the National Crude Oil Spill Fate and Natural Attenuation Research Site in Bemidji, Minnesota, where he drilled wells and collected soil cores for researchers from around the world.

In 2014, he transferred to the Northwest Washington Field Office (NWFO) as a surface water technician, spending five years operating and maintaining streamgages in Northwest Washington. In 2019, he was selected as the NWFO Supervisor, managing operations and staff. In December 2024, he transferred to the Wyoming-Montana Water Science Center, resuming his supervisory duties in the Southwest Montana Field Office, located in Helena.