1. Flood stage for the Acorn River is 22 feet. On Tuesday, the river was three feet below flood stage. How high was the river? 19 feet 25 feet 91 feet 10 feet 2. On Wednesday, the river was four feet above flood stage. How high was the river? 25 feet 26 feet 18 feet 10 feet 3. On Saturday, the river was another 9 feet above flood stage. Now how high was the river? 31 feet 35 feet 13 feet 17 feet 4. In Femaville, 60 percent of the households have flood insurance policies. There are 2,000 households in Femaville. How many flood insurance policies are there? 120,000 policies 1,200 policies 180 policies 2,060 policies 5. Three towns along the Acorn River might need to evacuate because of flood waters. The towns are: Shelbyville (population 8,922), Bigburg (population 3,007) and Castor (population 571). How many people might be evacuated? 11,986 people 15,200 people 12,500 people 11,929 people 6. If exactly one-fourth of the people who were evacuated went to the Red Cross shelters. How many people would be in shelters? 12,500 people 50,000 people 3,215 people 3,125 people 7. The Acorn River flooded in 1891, 1922, 1954, 1975 and 1991. What is the average number of years between floods? 20 years 25 years 100 years 31 years