To get a list of topographical maps that cover a particular area, drag the orange map icon to your point of interest then click the "Find Maps" button. You will be able to download your map on the next page. The 2025 NCKMS Symposium's map database currently contains 273,682 maps. The catalog was last updated on Friday, October 16, 2026.
Bristlecone Convention Center
Great Basin NP
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The Hydrographic Great Basin is a 200,000 square mile area of the American West that extends from the Sierra Nevada Range in California to the Wasatch Range in Utah, and from southern Oregon to southern Nevada. The entire basin contains what's called an endorheic watershed. All precipitation in this region evaporates, sinks underground, or flows into lakes. No water reaches the ocean.