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- WATER RESOURCES ENGINEERING: The ordinates a one-hour intervals of a unit hydrograph are 350.2, 753.2, 1556.0, 1980.1, and 224.3 cfs/in. Determine the direct runoff hydrograph from a three-hour storm in which 0.6 inches of rainfall excess occurred in the first hour, 1.3 inches in the second hour, and 0.3 inches in the third hour. What is the watershed area in mi2?Determine the size of outfall sewer below MH1 needed to serve the 12-acre drainage area in Figure. Eacharea has an inlet time of 10 min. The coefficient of runoff for the two housing areas is 0.45, and the park is0.15. The distance between manholes is 600 ft, and all)pipes are set on a slope of 0.0020. The rainfall intensity durationrelationship is i+ 131 divided by t+19, where i= inches per hours anst= minutes.Determine the following:What is Rainfall-Run off Relation?Definition of HydrographWhat is a Hydrograph Separation?What is a Unit Hydrograph?Estimation of Discharge using HydrographWhat is Rational Formula and SCS Curve?Please type it in here instead of writing it on a piece of paper
- Homework-help : The land use of the area and the corresponding runoff coefficients are given in the table. Find the runoff if the rainfall intensity is 100mm/hr. before and after converting 7 ha from lawn to industrial area. Then design the pipes for sewer system if he Manning coefficient is 0.012 and the relevant slope is 0.003m/m.WATER RESOURCES ENGINEERING A 6-hour storm event occured in the study basin. You were able to measure precipitiation and infiltration data, but not streamflow. Using the precipitation and and infiltration data and the unit hydrograph, estimate the total streamflow during and after this storm event. Calculate stream flow for each time step until the total streamflow is equal to the baseflow of 35 m3/s. Please refer to attached images of data tables:a) The temporary storm storage reservoir mention in task (Concern has been expressed at the local waste water treatment plant regarding theoverflows caused by storm water being passed down the same pipeline. The town areamain drain has to deal with a maximum of 100m3/s approximately twice a year and so it isproposed that a single drain pipe capable of taking this volume of water be collected fromthe main storm drains into a temporary storage reservoir to be channelled into the river.The maximum head available is 22m. The pipe is 2050m long, the Darcey Weisbachfigure is 0.011, what is the minimum pipe diameter for this project?) has the following dimensions: 5m wide by 12m long with a maximum depth Dm. Determine the value D if the maximum force allowed on the dam is……. b) There is a control room underneath the storage reservoir which covers the same area as the reservoir itself. Calculate the total water load on the roof of the control room at maximum allowable depth. c) Suggest a…
- What is flow in pipe 3 in lit/sec. CHOICES: a.199, b.1,991, c.1,991, d.911A tannery with a wastewater flow of 0.011 m3/s and a BOD5 of 590 mg/Ldischarges into the Cattaraugus Creek (Nemerow, 1974). The creek has a10-year, 7-day low flow of 1.7 m3/s. Upstream of the tannery, the BOD5of the creek is 0.6 mg/L. The BOD rate constants k are 0.115 d21 for thetannery and 3.7 d21 for the creek. The temperature of both the creek andthe tannery wastewater is 208C. Calculate the initial ultimate BOD aftermixing.a drainage basin with an area of 5 km2 receives 25 mm ofrainfall. The losses due to interception and evaporation during the rainfall event amountis 5 mm. There is also some surface runoff. There is 2% of the rain falls directly falls intothe stream as channel precipitation. A very large part of the rainfall infiltrates into thesoil. The amount of 40000 m3 of volume of water discharges at the out let of thewatershed, where 75% of this amount is baseflow. What is the runoff coefficient (%)?Hint (Runoff coefficient is surface runoff/precipitation)
- acatchment area 120 hectare has time concentration 30min and run off coefficient of 0.3.if a storm of duration 45min results in 3cm ofraincovercatchmentestimateresulting peak flow rate?OIL WITH SP.GR. 0.95 FLOWS AT 200 ? ??/??? THROUGHA 500 METER OF 200 MM DIAMETER PIPE (? =0.0225).DETERMINE THE HEAD LOSS A. 121.16 ?????? B.106.21 ??????C. 116.20 ?????? D.161.20 ?????Using the Manning nomograph determine the following: a. An 800 mm diameter sanitary sewer is built on a slope of 0.2 percent. What is the full-flow discharge capacity of the sewer and what is the flow velocity? b. What diameter pipe is needed to carry a peak flow of 200 liters/s on a grade of 0.007 ? c. The discharge for a 200 mm inside diameter common clay drainage tile running half full if it is laid on a slope that drops 1 m over a run of 1000 m . Assume n=0.01 .