District Issues Protective Actions for Floods Floods can develop slowly over a period of several days or it can develop within minutes, which is the case with Flash Floods. In general, you should know the difference between a watch and a warning. A flood WATCH means that flooding could occur and a flash flood WATCH means that flash flooding is possible and could occur without warning. A flood WARNING means that flooding is occurring or is about to occur and a flash flood WARNING means a flash flood is occurring. In the event of a flood or flash flood watch or warning, you should: Keep your automobile gas tank filled; if electric power is cut off, gas stations may not be able to operate pumps for several days. Keep a stock of food that requires little cooking and no refrigeration; electric power may be interrupted. Keep a portable radio, emergency cooking equipment and lights and flashlights in working order. Know your elevation above flood state. Store drinking water in various containers and clean bathtubs. Water service may be interrupted. Move to a safe area before access is cut off by floodwater. Do not attempt to drive over a flooded road - you could be trapped or stranded. The depth of the water is not always obvious, or the road could be washed away. If you can't see it, you can't be sure it's there. Be prepared to evacuate if necessary. Develop evacuation routes from your home and your workplace. Be aware of creeks and other low-lying areas that are prone to sudden flooding.