Conducted Studies and Compiled Data

DEQ ANALYSES AND 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 groundwater quality monitoring data, visit DEQ’s Water Quality Monitoring Database (AQWMS) here*