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The drainage area upstream of a small dam is 20 acres. On a certainday the pond was 9 feet deep with a surface area of 1.6 acres. Thatnight, a 5.4 inch rainstorm caused a large rise in the pond. Thenext morning, the pond was 12 feet deep with a surface area of 2.4acres. There was no outflow from the pond during this period. Find:
a) Volume of runoff from the land surface into the pond, inacre-feet
b) Depth of runoff from the land surface, in inches
State assumptions and approximations.
A total of 500 mm of rain fell on a 75 ha watershed in a 10 hour period. Compute the average rainfall intensity and the total volume of rain that fell on the watershed.
If a certain watershed received 1,250 mm of rain during a year, stored 150 mm of water in its soil mantle, and lost 400 mm of water downstream, how much water (in mm) was lost to the atmosphere (mainly through plants)
consider the diffusion of water vapor through a polypropylene (PP) sheet 2mm thick. the pressure of H2O at the two faces are 1 kPa and 10kPa, which are maintained constant.
Conditions in the sewage pipe are Qs= 0.5 m^3/s, and Cs= 100mg/L. The pollutant is destroyed in the lake with a first-order rate constant of 0.2/d. The flow rate out of the lake is 5.0 m^3/s.
To satisfy desige limitation it is necessary to determine the effect of the 2- kN tension in the cable on the shear tension and bending of the fixed I-beam.
how many tons of coarse aggregate will be required to fill a trench 5 ft deep, 3 feet wide and 300 feet long. the coarse aggregate unit weight equals 93.6 lb per cu ft.
Suppose that in a senior college class of 500 students it is found that 210 smoke, 258 drink alcoholic beverages, 216 eat between meals, 122 smoke and drink alcoholic beverages, 83 eat between meals and drink alcoholic beverages
Design the ramp for the highest design speed (to the nearest 5 mph) without exceeding a minimum D of 8.0. (Assume the PC of the horizontal curve is at station 15+00, and the vertical curve PVIs are at the PC and PT of the horizontal curve). Maximu..
The pedestal supports a load P at its center. If the material has a mass density p, determine the radial dimension r as a function of z so that the average normal stress in the pedestal remains constant.
A 5000 m3/day wastewater treatment plant discharges to a river with a minimum drought flow of 140 m3/min (upstream of outfall) a)What total allowable BOD (kg/day) could be discharged by the plant if the BOD in the river after initial dilution must ..
What additional data and information should he gather,and how should he go about gathering the data information ?
the engine develops a maximum torque of 210ft-lb at 3600 rev/min. what is the maximum grade this vehicle could ascend, on a paved surface, while the engine is developing maximum torque (assume that the available tractive effort is the engine-gener..
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