Problem 3. A 12-cm-diameter aluminum downspout drains the roof of a house with an elevation drop of 4.2 m. a When the gutter runs full, what would be the flow rate in liters per second? Assume the downspout is smooth (k, = 0) using the Swamee-Jain Equation. b The gutter is designed for a rain storm with a rainfall intensity of 5 inches per hour. At this rate, what area of roof in m² could be handled by the downspout? 4.2 m Water

Solve a and b

Q2: At the beginning of a given day a reservoir has a surface area 30 km². The inflow to the reservoir during the day was measured to be 65 m³/s. In addition, the day was dry and the seepage is 5% of the inflow. Assume the area of the reservoir does not change significantly by the end of the day. Determine the reservoir evaporation in mm/day where the reservoirs level is decreased 3.5 cm and the pan coefficient is 0.8?

Take note: Answer and write your solution on a clean paper clearly. During a flood flow the depth of water in a 12 m wide rectangular channel was found to be 3.5 m and 3.3 m at two sections 300 m apart. The drop in the water-surface elevation was found to be 0.18 m. Assuming Manning’s coefficient to be 0.023, determine the following: a. Average value of k? b. Estimate the flood discharge through the channel ?

Kindly help

Problem 1. Consider a drainage system that consists of horizontal drains located at an elevation ho above the base of an unconfined aquifer of thickness b 10 m (see Figure 1). The recharge rate is r = 100 mm/yr, and the hydraulic conductivity of the aquifer is K = 1 m/d. The design condition of the drainage system is to avoid ponding at the ground surface. You can ignore the vadose zone for this problem. 1. Obtain the relation between the half-distance between drains, L, and the elevation of the drains, ho. Plot this function over the range of feasible lengths. 2. The cost of each individual drain can be split as the cost of the material (fixed) and the cost of installation (which is assumed to be proportional to the depth b – ho). If the fixed cost is $500 and the installation cost is $100 per meter of aquifer length per meter of depth, can you build a drainage system for less than $1 per meter of aquifer length? If so, what depth ho and spacing 2L would you choose? K= 1 m/day 2L = r…

Porosit, n = 0.3 Hydraulic conductivity, K = 1 m/day protected wetlands D. 5 h=90m с El water table contaminated site E A B h=120m 150 100 50 ELEVATION (m a.s.l) h=110m h=100m 0 50 100 150 200 DISTANCE (m) on the graph below, schematically sketch the volumetric discharge, Q, specific discharge, q, and seepage velocity, v along one of the two middle flow tubes. Explain the graph. Q, q, v Distance along a flow tube 0

i need the answer quickly

i need the answer quickly

Please be clear with your solution and write an explanation for every formula and solution. Problem:Laguna Lake has a surface area of 708,800 sq.m. Based on collected data, Pasig river flows into the lake at an average rate of 1.5 cu.m/s and the Paranaque river flows out of the Laguna lake at an average rate of 1.25 cu.m/s during the month of June. The evaporation rate was measured as 19.4 cm/month. Evapotranspiration can be ignored because there are few water plants on the shore of the lake. A total of 9.1 cm of precipitation fell this month. Seepage is negligible. Due to the dense forest and the gentle slope of the land surrounding the lake, runoff is also negligible. The average depth in the lake on June 1 was 19 m. What was the average depth of June 30?