Arizona Geological Survey (AZGS) geologists have completed mapping the known earth fissures of Maricopa County. Our mapping team identified and mapped more than seven miles of fissures in 8 separate study areas that are compiled together on this new county-wide map. The finished Maricopa County Earth Fissure Map (map scale 1:250,000) is available online as a PDF download at AZGS’s Earth Fissure Center.
AZGS has completed mapping in the known fissure areas ("study areas") of Maricopa County and is wrapping up initial mapping of the areas of Pinal County.
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