[GIS] Source for GeoJSON data for the US

datageojsonunited-states

Does anyone know of any good sources for US data (counties, congressional districts, etc) in GeoJSON format? Has anyone converted public-domain shapefiles/sources to GeoJSON that they would be willing to share?

Best Answer

I found something closer to what I was looking for (US State and County boundaries) on github: https://github.com/johan/world.geo.json/tree/master/countries/USA

The features are very generalized/simplified, but they'll work for a national scale map. Country boundaries for the whole world are available in this repo too.

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Lightning Strike Data – Near Real-Time Sources

EarthNetworks

Earth Networks Total Lightning NetworkTM (ENTLN)

"incorporates patent pending systems and methods for the detection of lightning activity to provide unmatched global IC and CG detection efficiency. It is the first integrated in-cloud (IC) lightning and cloud-to-ground (CG) detection network deployed on a global basis capable of detecting long range IC lightning at high efficiencies critical for the advanced prediction of severe weather phenomena such as:"

Tornadoes/cyclones
Heavy rainfall/monsoons
Downburst winds/wind shear
Cloud-to-Ground lightning strikes

'Approximately 600 wideband lightning sensors deployed globally' PDF http://www.earthnetworks.com/Portals/0/pdf/ENTLN%20Global%20Slick_v4.pdf

[GIS] Now that NationalAtlas.Gov is retired/removed, where is the largest source of public shapefiles for the USA

I just checked my old National Atlas bookmark and was redirected not to the National Map Viewer, but to the National Map's Small Scale data page. There are 197 datasets available for download there, to my eyes it looks like it's the same data that was available at the old National Atlas page and they just moved it to the new URL. Are you not being forwarded to that site?

The main page states:

The National Map is now offering a collection of small-scale datasets that can be downloaded for free. Although the 1997-2014 Edition of the National Atlas of the United States was retired in September 2014, The National Map recognizes the importance of continuing to make a collection of the small-scale datasets, originally developed for the National Atlas, available to users.

It sounds like the layers that are there may not be updated going forward.

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[GIS] Now that NationalAtlas.Gov is retired/removed, where is the largest source of public shapefiles for the USA

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