To measure impacts on the marine environment, NOAA scientists employ a number of tools, the majority of which have been developed within NOAA. Take a look at the following selection of critical assessment tools which OR&R uses in the natural resource damage assessment process to restore public resources. These tools are also frequently used with OR&R mapping and spatial data products to determine environmental damage. An innovative example of a mapping product NOAA has developed is ERMA^®, an online mapping tool that integrates both static and real-time data, in a centralized, easy-to-use format for environmental responders and decision makers. Find out more about how NOAA uses ERMA.