2. Determine the direction of groundwater flow and the groundwater flow gradient.

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.

3. Assuming O follows a Normal distribution, compute the following. (1) Peak flow of the 100-year return period (2) Probability that Q is less than or equal to 20000 cfs (3) Return period of Q> 20000 cfs

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

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

4. Assuming O follows a Log Normal distribution (use natural log), compute the following. (1) Peak flow of the 100-year return period (2) Probability that Q is less than or equal to 20000 cfs (3) Return period of Q> 20000 cfs

Problem 2: During a 60-minute storm, the precipitation rate over a 90-acre area is 0.9 in/hr. An infiltration rate of 0.12 in/hr is assessed for the period of the storm. The average river outflow from the arca is 40 cfs during the storm. What is the value of combined depression and interception storages in acre-ft, cubic ft, and cfs-hour.

\text { 4. What is the flowrate (cfs) due to infiltration at elevation } 5.0 \text { feet if } K \text { (ft/day) }=5.0 ? \text { (a) }<0.5 \text { cfs (b) } 0.5-2 \text { cfs (c) } 2-4 \text { cfs (d) }>4 \text { cfs } \text { Darcy's Law- Q (cfs) }=K^{\star} i^{\star} A K (ft/s) is the hydraulic conductivity • i = dH/dL = 1%3D A (sf) is the area at the elevation in question

Using the Pals Method, star to develop the output hydrograph for a reservoir given the input hydrograph data below.

Report Design Aims and Objectives The aim of this report was to undertake a preliminary design of the detention basin. This was done by designing a culvert, weir, emergency spillway, baffles, and dam embankment, to safely manage outflows from the proposed urban development and minimise risks for downstream catchments.