2. The ordinates of a 6-hour unit hydrograph are given. A storm had three successive 6-hour intervals of rainfall magnitude of 3, 5, and 4 cm, respectively. Assuming a D-index of 0.2 cm/h and a base flow of 30 m^3/s, determine the resulting hydrograph of flow. Time (h) Ordinate of 6-h UH (m3/s) 0 0 6 250 12 600 18 800 24 700 30 600 36 450 42 320 48 200 54 100 60 50 66 0

Flooding is a temporary overflow of water that submerges or covers the the usually dry land. It can also be defined as the overflow of the excess amount of water that covers a huge area of land which is normally dry.