Homework 5 (small project) The Wadirrayyan Watershed in the figure below (figure 1) has the parameters listed in the accompanying table. A 4-hr rainfall hyetograph in in/hr that occurred on January 5, 2022, is shown in figure 2 below. Assume the rain fell uniformly on the watershed. Use the information given to determine the predicted outflow at the watershed outlet using HEC-HMS. Assume no base flow. Use SCS method for unit hydrograph (transform component) for the sub-basins A, B, and C. Use Snyder's method for unit hydrograph (transform component) for Sub-basin D. Use SCS method for Loss component for all Sub-basins. Submit Homework as MS word with screenshots of: 1) HEC-HMS window that shows the entire window including Basin model before starting the run. 2) HEC-HMS window that shows the Global Summary Result. 3) The results in graphs for each subbasin, reach, and Junction.

2- Based on the material in your book, what are the expectations from an Integrated Watershed Management approach?

.. Given the tank configuration shown below, find the hydrostatic force on the dome if the air pressure at the upper end of the manometer is 1814 psf.

5. An inverted test tube partially filled with air floats in a plastic water-filled soft drink bottle asshown in below. The amount of air in the tube has been adjusted so that it just floats. The bottlecap is securely fastened. A slight squeezing of the plastic bottle will cause the test tube to sink tothe bottom of the bottle, Explain this phenomenon.

3. A rainfall with intensity of 45 mm/h and duration of 1.5 h falls on a 540 ha catchment. Use rational method to calculate the peak runoff for the followingconditions: Natural soil, with time of concentration te = 2 hour and C = 0.4, b) Improved, partially paved area, with time of concentration te 1 hour and C 0.7.State any assumptions used.

2- Based on the material in your book, what are the expectations from an Integrated Watershed Management approach?

2. A basin has an area of 750 km2. 40 % of it is impervious due to either rock outcrop or urbanization. 30 % is thick forest. The remaining is agricultural land. The indices for these portions may be taken as 0, 15 and 7.5 mm/h. An 8 hr storm produced rainfall intensities of 6, 9,20, 16, 4, 14, 12 and 2 mm/h in successive one hour intervals. Determine the corresponding runoff depth and runoff volume in million m3

5 Assume that the Selway River data are normally distributed. Find the following: a. Peak flow of the 100-year flood b. Peak flow of the 50-year flood c. The probability that the flood will be less than or equal to 40,000 cfs d. The return period of the 40,000-cfs flood. . Assume that the Selway River data are log normally distributed. Find the following: a. Peak flow of the 100-year flood b. Peak flow of the 50-year flood c. The probability that a flood will be less than or equal to 40,000 cfs d. The return period of the 40,000-cfs flood

5- A class A pan was set up adjacent to a lake. The depth of water in the pan at the beginning of a certain week was 195 mm. in that week there was a rainfall of 45 mm. 15 mm of water was removed from the pan to keep the water level within the specified depth range. If the depth of the water in the pan at the end of the weak was 190 mm, calculate the pan evaporation. Using a pan coefficient, Cp = 0.7.Estimate the evaporation from the lake in that week.

4- Define hydrological cycle and explain the main components of the hydrologic cycle with a neat sketch of the cycle.