CL Tools

provides access to maps of CLs and exceedance for N and S deposition for sensitive lakes and streams, lichens, and trees

an interactive “front end” to the National Critical Loads Database

Air Quality Tools

provides Park Service unit-specific air quality data, conditions, and trends for ozone, particulate matter, visibility, nitrogen, and sulfur

provides Forest Service unit-specific air quality data, conditions, and trends for ozone, particulate matter, visibility, nitrogen, and sulfur

provides US Fish and Wildlife Service unit-specific air quality data, conditions, and trends for ozone, particulate matter, visibility, nitrogen, and sulfur

Air Quality Impacts Reports

detailed reports on all CL data (CL values, sensitive species, number of waterbodies) and exceedance data (count of exceedances, areas in exceedance, species in exceedance) available for NPS and USFS units within the contiguous US based off of the most recent TDep data

provides a report for each FS Wildernes Area that streamlines annual WSP reporting for WAQVs from lichen-based CLs

Forest Vulnerability Hotspots Mapper (USFS)

provides maps of vulnerability of forests to insects and diseases from user defined levels air pollution (nitrogen deposition), fire risk, drought, and temperature warming