Tier II High Quality Waters Map
Please note that it may take several seconds for the map to fully load.
About the Maps
All of the maps on this page display Tier II high quality stream segments and their drainage areas/catchments. Streams and their catchments are symbolized as to whether assimilative capacity remains. The interactive map immediately above shows the entire state and can be manipulated in a number of ways. The maps at the bottom of the page are in PDF (Adobe) format and are not interactive. They show Tier II information for just a single county. All maps on this page display the same data.
How to Use the Interactive Map
To navigate the interactive map, use your arrow to drag and pan. Click the plus and minus buttons to zoom in and out. You can also enter an address in the window (top right) to zoom to a location. Clicking on "Basemap" allows the user to change the background (e.g. aerial photography, topographic coverage, etc). Clicking a stream or catchment will display the Tier II segment or catchment information. This map is current and was most recently updated in August of 2012. This map will be updated on an as-needed basis as new information becomes available. Clicking on “View Larger Map” will take the user to a customizable map interface where additional layers may be added.
High Quality Waters by County (Last updated August 2012)
The maps below show the same information as the interactive map above. However, these maps are in PDF (Adobe) format and are not interactive.
To return to the main High Quality Waters (Tier II) page, click here.
Please direct any questions or comments concerning Maryland's Antidegradation program to Angel Valdez at avaldez@mde.state.md.us or 410-537-3606.