MARPLOT® is a mapping program designed for emergency planning and response tasks. With this easy-to-use GIS interface you can add your own objects (symbols, rectangles, circles, polylines, and polygons) to maps, as well as view and edit data associated with those objects. You can choose between several basemaps for the background image, and you can customize your map further with annotations and online Web Mapping Service (WMS) layers. You can also interact with the map in other ways, such as getting population estimates within an area.

MARPLOT is one of the programs in the CAMEO® software suite, which is developed jointly by NOAA and the U.S. Environmental Protection Agency. MARPLOT can be used with other programs in the suite by linking map objects to the CAMEO Data Manager program and easily displaying ALOHA® threat zones on a map. However, MARPLOT can also be run by itself as a general mapping program.

Sample MARPLOT screenshot showing a fictional train derailment with ALOHA threat zone estimates for the chemical release.
 

• Download MARPLOT 5.1.1 for Windows [EXE, 176 MB]
• Download MARPLOT 5.1.1 for Mac [DMG, 283 MB]

MARPLOT 5.1.1 was released in December 2017. The Windows version can be run on the Windows 7, Windows 8.1, and Windows 10 operating systems. The Macintosh version can be run on the Yosemite (10.10), El Capitan (10.11), Sierra (10.12), and High Sierra (10.13) operating systems. Other operating systems have not been tested and are not supported.

If you already have an older 5.x version of MARPLOT: Before installing the new MARPLOT version, make a copy of your current MARPLOT Data folder and save it to a backup location. For Windows users, if you install the new MARPLOT version in the same location as your old MARPLOT 5.1 or 5.0.x version, MARPLOT will upgrade to the latest version while also keeping your current data and settings. For Mac users, there is an extra step required in the installation process. Follow the on-screen instructions in the DMG installer to upgrade your data.

• Made improvements to the auto-upgrade process to resolve rare issues some users experienced when upgrading to 5.1.
• Modified new layer creation process so that layers default to Individual Graphics Mode.
• Updated U.S. Boundaries layers to 2017 data.
• Enhanced threat zone information display in ALOHA popup notes.
• Added ability to move objects to a different layer (if the data fields match).
• Added geodatabase files to the list of supported import file types.
• Enhanced import to provide the option to import layers into folders.
• Created a new MARPLOT file type (DBZ) that allows folders from the panel to be included in the export file.
• Modified the new layer function to allow cloning of an existing layer (to use its settings as a template for the new layer).
• Added ability to include links to local files on the computer in popup notes and info boxes.
• Switched to SQLite as the internal database structure (rather than DBF).
• Added support for Date and Date-Time fields.
• Improved time zone options in the Date and Time map extra (as well as the Date/Time data fields).
• Revised basemap options, including new Esri basemaps and NOAA nautical charts.
• Added enhanced support for U.S. National Grid coordinates in export and import.
• Switched to a new offline basemap tile provider.
• Enhanced search to allow object popup notes to be included as an option.
• Added ability to show object popup notes and coordinates in the search results (and therefore also include them in the Copy Table function).
• Made improvements to the installers and the data upgrade process for existing users.
• Added enhancements for program stability and improvements for program speed.
• Made additional improvements to the program interface and fixed bugs.

• MARPLOT Fact Sheet [PDF, 676 KB]: Learn more about the key features in the MARPLOT program.
• National Geospatial Data Sources: MARPLOT includes four U.S. boundaries layers and some online Web Mapping Services (WMS) layers by default. You can add additional object-based layers, WMS layers, and raster images from other sources. Refer to this list of national geospatial data sources for some examples.
• CAMEO News Service: This mailing list provides a way for the CAMEO team (at EPA and NOAA) to communicate important information to the CAMEO community. It is used primarily to send updates when new releases are available for ALOHA, CAMEO Chemicals, CAMEO Data Manager, MARPLOT, and/or Tier2 Submit. The service is hosted by NOAA. Follow this link to subscribe.

Questions: Contact us with questions, comments, or suggestions about MARPLOT.