A storm drain system is shown in Figure P16.11. For the flow conditions indicated, determine the time of concentration from Point A to Point C using the Kirpich, Kerby, Bransby-Williams, and Federal Aviation Administration Methods.

Engineering hydrology

Q- A river has a flow of 1000 million litres per day (MLD). BOD5 of 5 mg/litre and Dissolved Oxygen (DO) level of 8 mg/litre before receiving the wastewater discharge at a location. For the existing environmental conditions, the saturation DO level is 10 mg/litre in the river. Wastewater discharge of 100 MLD with the BOD5 of 200 mg/litre and DO level of 2mg/litre falls at that location. Assuming complete mixing of wastewater and river water, the immediate DO deficit (in mg/litre, round off to two decimal places), is

3. A 55.0 ML/d wastewater treatment plant discharges to a river system with a maximum spring flow of 149.5 m3/min and a minimum summer flow of 98.2 m3/min (upstream of the outfall from the plant). What total allowable BOD (mg/L) could be discharged by the plant if the BOD in the river after dilution must not exceed provincial standards, and there is already 1.1 mg/L of pollution in the river upstream?

hydrology engineering

i need the answer quickly

Problem 3. Given below are the daily mean flows in cubic meter per second at a gaging station for a period of 5 days. What is the mean flow rate for the period of cubic meters per second? What is the total discharge during the period in cubic meters? If the drainage area is 1958 km', what is the runoff volume in millimeters? Day 1 | 2 | 3 4 | 5 Flow, m'/s 19.8 135.9 87.8 57.2 37.1 Problem 4. Using the data of prob. 4-3, and relationship of Fig. 4-16, estimates the peak flow

Wasterwater Engineering Civil engineering

You are responsible for calculating the peak discharge for a culvert design in a smallwatershed in Washington, DC. The watershed area is 4 acres and currently has 30 % of its area ofindustrial (heavy areas) and 70 % of residential (single –family areas). The design manual suggestsyou design your culvert for a 10 return period. The watershed has a concentration time of2 hours. Calculate:a) What is the design peak flow?b) What is the impact of the runoff coefficient (C) range on your design?c) After you implemented your project, the residential area was entirely converted toindustrial areas. Would that affect you design? If yes, by how much?

%VY . Q1: A catchment area is 5 square miles and the total direct Runoff (E D. R = 11150 ft / sec). Estimate the base flow for the data shown in the table below? Time 2 3 4 5. 6. 500 500 1200 2250 2920 2670 2060 1430 Total Flow(ft/sec) 202.57 | 506.43 700.32 627.97 451.44 269.13 11 U.H 10 1100 910 Time 9 12 13 14 15 16 Total 780 650 530 510 510 500 Flow(ft'/sec) U.H 173.6 118.65 81.03 52.09 28.94 11.57 2.89 Q2: Develop a 3-hr synthetic unit hydrograph for the catchment are using Snyder's method only. If the catchment area is 400 kan?, L= 25 kam and La km, assuming C15 and C,-0.7 •,.0 |||||||||||||1||||||| إلغاء إعادة تعي ين