![]() ![]() Remember, never try to cross a flooded roadway. Many of those areas are marked around our state, warning drivers not to enter when flooded, but many drivers still try to chance it. The red lines comprise the currently defined floodplains areas in the Valley.įor a comprehensive look at floodplains mapping in the Valley, see the Maricopa County Flood Control District's map. Take a look at the FEMA floodplain map below. That discount is now being raised to 25 percent. Previously those in "high-risk flooding areas" in Phoenix could get a 20 percent discount on flood insurance. The City of Phoenix just announced Wednesday that Phoenix owners can now get an addition 5 percent discount on flood insurance thanks to a new FEMA designation. In other words, this map depicts areas that see flooding and have a chance for excessive flooding. The Federal Emergency Management Agency, FEMA, compiles detailed mapping of areas that have "a one percent chance to be equaled or exceeded in any year," which they deem the 100-year floodplains map. Tropical Storm Rosa timeline: What to expect in Arizona When water cannot seep into the ground, it runs off and collects in our low lying roads and washes leading to flooding. Topography, soil conditions and ground cover play critical roles, as well.īecause our land is so dry, there is a hard crust over it which makes it difficult for the ground to absorb moisture. The two key elements of flash flooding are rainfall intensity and how long the rain lasts. UPDATES: Track closures, outages around Valley Heavy Valley rainfall from Hurricane Rosa has increased flooding chances across the Phoenix area. ![]()
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