Science & Technology

Processing Shellfish Samples

Processing Fish Fillet Samples

EPA Response to Enbridge Spill in Michigan

EPA's response to the Enbridge oil spill in July 2010 near Marshall, Michigan, including documents, data, photos.

2015 Great Lakes Human Health Fish Fillet Tissue Study

This page contains information about 2015 Great Lakes Human Health Fish Fillet Tissue Study

Estuaries and the National Estuary Program

Provides information about estuaries and the National Estuary Program

Physical and Chemical Attributes

This page explains the connection of the ROE indicators to the chapter themes. This page includes the ROE questions, lists of the related indicators, and additional background information.

Total Deposition Maps

Annual average total deposition estimated with the TDep Measurement Model Fusion method that combine the dry deposition and wet deposition grids.

WhAEM2000 BBM Files - Missoula West, Montana

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Missoula West Quadrangle, Montana. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Missoula East, Montana

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Missoula East Quadrangle, Montana. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Lima, Montana

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Lima Quadrangle, Montana. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - New Hampshire and Vermont

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for quadrangles in New Hampshire and Vermont. Files serve as geographic basis for groundwater modeling.

Dry Deposition Maps

Annual average dry deposition estimated with the TDep Measurement Model Fusion method using the measured air concentrations from CASTNET and modeled CMAQ deposition velocities and fluxes.

Combining Measurements and Modeling to Better Understand Ammonia Air-Surface Exchange Processes

Maps & Charts

Available maps from the Clean Air Status and Trends Network (CASTNET)

WhAEM2000 BBM Files - Marshfield, Wisconsin

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Marshfield Quadrangle, Wisconsin. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Redfield, South Dakota

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Redfield Quadrangle, South Dakota. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - New Underwood, South Dakota

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for New Underwood Quadrangle, South Dakota. Files serve as geographic basis for groundwater modeling.

WhAEM2000 BBM Files - Steele, North Dakota

WhAEM2000 (Wellhead Analytic Element Model) binary base map browser for Steele Quadrangle, North Dakota. Files serve as geographic basis for groundwater modeling.

The National Nutrient Inventory Webinar Archive

This EPA Tools & Resources webinar, recorded May 17th, offers an overview of the nutrient inventory research portfolio – specifically highlighting datasets and research available to date.

Enhancing Nutrient Reduction Efforts with the National Nutrient Inventory Training Webinar Archive

This EPA Tools & Resources Training webinar showcased EPA’s National Nutrient Inventory Research Portfolio.