Confluence Retirement

In an effort to consolidate USGS hosted Wikis, myUSGS’ Confluence service is scheduled for retirement on January 27th, 2023. The official USGS Wiki and collaboration space is now SharePoint. Please migrate existing spaces and content to the SharePoint platform and remove it from Confluence at your earliest convenience. If you need any additional information or have any concerns about this change, please contact Thank you for your prompt attention to this matter.
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New to The National Map Corps? Head over here for an overview of the project.

Mapping Challenges will be released periodically and are a way to focus volunteers on areas that need editing. The challenge is to edit the red points if you are Standard Editor and to Peer Review the green points within the challenge area released. Make sure to look for missing points too! Advanced Editors can edit any of the points within the challenge area. 

Volunteers who contribute in the Challenge area will be recognized on this page and also tweeted on The National Map Twitter account. Contribute to The National Map by participating in Mapping Challenges!

NOTICE!! Mapping Challenges have moved!

12/12/19 -------------------------------------------------------------

NOTICE TO OUR VOLUNTEERS!!  Mapping Challenges have moved!

Please note that Mapping Challenge updates will no longer be posted on this website.  For the most recent information, visit our new website at   

Mapping Challenge updates will appear either in the News section or on a designated Mapping Challenges page:

Reach out to us at with questionsThanks for all that you do, and Happy Mapping!

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