There are many different stream layers, some are cartographic like the NHD+ while others are derived synthetically from digital elevation models, like NetMap's analytic stream layer. It is important to be able to transfer data between different stream layers. For example, NetMap's numerous attributes calculated by its suite of tools could be transferred to the NHD+, adding value to and strengthening that system. Similarly, data that has been stored in NHD event tables could be transferred to NetMap's stream layer, thereby enabling NetMap to utilize that data. The Cross Talk tool is anticipated to be available end of mid 2014.