| Flag Symbol | Flag Color | Hazard Type | Water Condition |
 | Green | Low | calm conditions are favorable for swimming |
 | Yellow | Medium | moderate surf and or currents |
 | Red | High | high surf, strong currents |
 | Red Over Red | Danger | water closed to public use |
 | Purple | marine pest present can be flown in combination with either the single red or the yellow flag |
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