What would your magnetic declination be if you were using a compass in the Rocky Mountains?

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It depends on where in the Rockies you are. New Mexico? Colorado? Wyoming? Montana and Idaho? There will also be the standard deviations from the norm based on altitude, solar activity, weather, local anomalies, etc.

The deviation will range from about 9o in northern New Mexico (which is the southern end of the range) to about 15o in northern Montana and the Idaho panhandle.

Use the link to the NOAA web page where you can get a magnetic declination for any geographic location within the U.S. along with some correction factors. It is even searchable by zip code to make it really easy to approximate things quickly.

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First answer by ID1141775239. Last edit by Quirkyquantummechanic. Contributor trust: 367 [recommend contributor]. Question popularity: 32 [recommend question]

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