Studies and Data

DEQ Analysis & Reports

Third Trend Analysis of Food Processor Land Application Sites in the Lower Umatilla Basin Groundwater Management Area – June 2011

Second Trend Analysis of Food Processor Land Application Sites in the Lower Umatilla Basin Groundwater Management Area – Aug. 2007

First Trend Analysis of Food Processor Land Application Sites in the Lower Umatilla Basin Groundwater Management Area – Dec. 2004

Lower Umatilla Basin Groundwater Management Area Synoptic Sampling Event Report – May 2006

Analysis of Groundwater Nitrate Concentrations in the Lower Umatilla Basin Groundwater Management Area – Feb. 2012

Estimation of Nitrogen Sources, Nitrogen Applied, and Nitrogen Leached to Groundwater in the Lower Umatilla Basin Groundwater Management Area – June 2011

Compiled Data

Crops in LUBGWMA

Summary of Nitrate Trend Analyses

Water Quality Data

Nitrate Values per Well 1991-2016

For more information on current surface & groundwater quality monitoring data, visit DEQ’s Ambient Water Quality Monitoring System (AWQMS) here:

https://www.oregon.gov/deq/wq/pages/wqdata.aspx

Washington Dept. of Ecology spreadsheet model for nitrate to groundwater:

https://fortress.wa.gov/ecy/publications/SummaryPages/1403018.html