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What are the numbers the data is tiled by and how can I find the quad I want?

Data Numbers Quad tiled
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What are the numbers the data is tiled by and how can I find the quad I want?

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The numbers are the Ohiocode. These numbers uniquely identify each quad in the United States. To look up the Ohiocode for a specific quad name, click here: Ohiocode Quad Names (doc) I downloaded a DOQ file from your Web site, but it is not showing up where I expected . You have to download both the .sid file and the .sdw file. If you did not download the .sdw file it will show up in the wrong location. If you did download the .sdw file, check your file. Internet Explorer adds a .txt extension to .sdw files. If you have a filename .sdw.txt, simply remove the .txt ending and the file will operate properly.

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