Hydrography Event Management Tool Version 2.5 is Now Available!

A new release of the Hydrography Event Management (HEM) Tool is available for ArcGIS 10. The HEM Tool provides full functionality for adding and editing events in the National Hydrography Dataset (NHD). Events are informational data that are linked to the NHD using a linear referencing on NHDFlowlines. The HEM tool handles all the linear referencing mechanics to make working with events simple. Hydrography events support many applications such as resource management, environmental protection, emergency response, fisheries and much more.

Hydrography event


Hydrography event


Hydrography event


Hydrography event 


Enhancements to Version 2.5 include:

Find out more information and download the tool at: http://nhd.usgs.gov/tools.html.

An online demo of new features will be scheduled for the week of Oct 31st, email hem@usgs.gov to attend.

Special thanks to Ariel Doumbouya for providing this post. Questions for Ariel: hem@usgs.gov.

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Project Manager for the ArcGIS Living Atlas of the World Environment Team

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