In some states, insurance agencies might exclude certain things from your policy. Under most policies, landslides, mudflows, and even earthquakes might be excluded. Flooding, in particular, isn’t always covered. For instance, in Massachusetts, earthquakes and floods are excluded. Even though you do not live in an earthquake or flood-prone area, it might be wise to purchase the extra coverage to eliminate the financial risks. If you think you need coverage for an excluded peril, talk to your agency about purchasing the ad hoc coverage.