The following data represent stream link lengths in a river network (given in meters):   100, 426, 322, 466, 112, 155, 388, 1155, 234, 324, 556, 221, 18, 133, 177, 441.   Find the 90% confidence intervals for the mean stream link lengths

The ordinates at one-hour intervals of a one-hour unit hydrograph are 0, 269, 538, 807, 645, 484, 323,161 and 0 (in cfs). What is the watershed area in acres? (1 acre = 43560 ft^2)

3. For the given five-link network and the O-D matrix provided in Table 1 (see page 2) compute link flows using the all-or- nothing assignment method. Show your calculations. TABLE 1 zones 1 2 3 4 1 0 100 300 200 2 0 0 50 150 3 0 0 0 30 4 0 0 0 0

Q1: The table below represents the vertical coordinates for 12 hours standard hydrograph, find the vertical coordinates for 6 hours standard hydrograph and then specify: 1-The value of the vertical coordinates for 6 hours standard hydrograph at the time of 12 hours 2-The value of the vertical coordinates for 6 hours standard hydrograph at the time 30 hours. 3- The value of the vertical coordinate of 6 hours standard hydrograph at 48 hours time time 42 36 30 24 18 12 6 0 (hour) Coordinates 12 UH 153 150 136 111 76 37 10 0 (m3/s) 48 146