Hawaii - Volcano Lava Flow Hazard Zones - Hawaii Statewide GIS Program

This map depicts a lava-flow hazard zonation developed for the five volcanoes on the Island of Hawaii. Volcano boundaries are shown as broad black bands, reflecting the interleaving of lava flows from adjacent volcanoes along their common boundary. Hazard zone boundaries are drawn as double lines because of the geological uncertainty in their placement. Most boundaries are gradational, and the change in the degree of hazard can occur over a distance of a mile or more. The general principles used to place hazard zone boundaries are discussed by Mullineaux and others (1987) and Heliker (1990). The difference between the boundaries presented here and in Heliker (1990) reflects the completion of the geologic map of the Island of Hawaii.

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