Major DFC Network Outage

There is a planned major Denver Federal Center Network Outage for July 30, 2016 @ 12:00pm ET through July 31, 2016 @ 7:00pm ET. For the duration of this outage there will be rolling network outages as equipment is moved from one data center to the other.

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TNMCorps Project Webpage

Big Changes for TNMCorps!

The National Map Corps editor is going offline July 9th to make way for our new and improved web map editor coming in early August!

If you tried to go to our editor and ended up here, have no fear! Our new editor (at a new web address) will be coming soon. Keep your eyes peeled for an email coming in early August with more information. And, if you just can’t wait, check out our June newsletter for more information on what is to come.

Here’s a sneak peek at the new editor:

New to The National Map Corps?

TNMCorps is a crowdsourcing mapping program with volunteers successfully editing structures in all 50 States, Puerto Rico, and the US Virgin Islands. Structures are one of the layers in The National Map and include schools, hospitals, post offices, police stations, cemeteries, and other important public buildings.

Using a web-based mapping editor TNMCorps volunteers collect and/or improve structures data by adding new features, removing obsolete points, and correcting existing data. You do not need to live in available states to participate. Our editing guidelines explain how you can contribute data from anywhere.

Both newly collected and modified point features become part of the USGS National Structures Database, The National Map, and ultimately U.S. Topo Maps. Anyone with an interest in contributing can volunteer. Through their participation, volunteers are making significant contributions to the USGS's ability to provide the Nation with accurate mapping information.

It is easy to sign up and get started!! All you need is access to the internet, an email address, and a willingness to learn. However since we are currently transitioning to a new editor, check back here in early August for more information on how to get started editing using our brand new editor!


You would be using our online map editor to edit USGS structures data by updating existing features, adding new features, and removing obsolete features. You can choose what types of structure features to edit (from our list of structures) and edit in all 50 states, Puerto Rico, and the US Virgin Islands!









Project Updates
7/20/2016 -----------------------------
NY Law Enforcement Challenge Results

Because our editor went offline July 9th to make way for our new and improved editor coming in August, the New York Law Enforcement challenge is officially closed.

Thank you to the participants in this challenge, many of whom were first time participants!

CourtneyRose, Cricket, HGeislerJosie, Madmartigan, Olin, RagingSeas, armaggedonmap, bluelobster28, dgertzjr, geo163, hbrockus, kmac25, mikethompson30, rjerrard, stayfo, superlemur.

Check back here in August after our new editor is released for more mapping challenges!

6/23/2016 -----------------------------
PA Law Enforcement Mapping Challenge finished! / NY Law Enforcement Challenge Ends Soon

It took a while, but our BIGGEST mapping challenge ever (PA Law Enforcement) is finished!

A_Wallace, Cartograsaurus, CourtneyRose, Covert9, DoeringSA_AICP, Eolian, Geo5492, GeospatialBeatles, HGeisler, Medic922, StevenHill, Twigs, bonnieblue85, geo163, mapgal, mgelizabeth, msean2, rjerrard, rstevenson, trista. 

Special shout out to rjerrard for participating in their 5th mapping challenge! Keep up the awesome work!

Check out the Mapping Challenges page for more information.

4/7/2016 -----------------------------
NEW NY Law Enforcement Mapping Challenge / Update to PA Challenge

Please check out the Mapping Challenges page for more information on the new challenge.

12/9/2015 ----------------------------
NEW Mapping Challenge – Pennsylvania Law Enforcement

Please check out the Mapping Challenges page for more information on the new challenge.

12/4/2015 ----------------------------
Results of October Cemetery Mapping Challenges

Thanks to Kelly Margaret Gormanqueenofthedead, and Slartibartfast! Check out the Check out the Mapping Challenges page for more information, and keep your eyes peeled for a new challenge coming next week.

11/12/2015 ----------------------------
Results of The Great Shakeout NMSZ Mapping Challenge

Thanks to HGeislernotmyrealname2112rjerrard, and Cartograsaurus for participating!

Check out the Mapping Challenges page for more information.

10/27/2015 ----------------------------

NEW Cemetery Mapping Challenge – Douglas County, KS

Although a few points need to be finished up for the Orleans county, Louisiana mapping challenge, we want to squeeze one or two more cemetery mapping challenges in before Halloween so here's a new one!

Please check out the Mapping Challenges page for more information on the new challenge.

Stull Cemetery in Stull, KS, looks peaceful under a bright blue sky.

Stull Cemetery, in Stull KS; Photo from

10/16/2015 ----------------------------

NEW Cemetery Mapping Challenge

With one day left in The Great Shakeout mapping challenge, we are releasing the first of several Cemetery mapping challenges, in honor of Halloween.

Please check out the Mapping Challenges page for more information on the new challenge.


Happy Mapping!


For all past project updates and news click here