A 3-hr unit hydrograph U₁ of a catchment of area 245 km² is in the form of a triangular with peak discharge 35 m³/s. Another 3-hr unit hydrograph U₂ is also triangular in shape and has the same base width as U₁, but has a peak flow of 90 m³/s. What is the attachment area of U₂?

If area of the catchment is 62,5 sq.mm and axial length of the catchment is 10 mm, the form factor will be:

A steady discharge of 1 cumec flows uniformly in a rectangular channel 1 m wide at a depth of 250 mm. The slope of the channel bed is (a) adverse c (c) critical br(b) steep (d) mild

A reservoir has a capacity of 6.0x106 m3 and a drainage area of 200 km2. The annual stream flow averages 350 mm of runoff and the sediment production is 1100 metric tons per km How long will it take to reduce the reservoir volume to 1.0x106 m3 if the sediment consists of 10% sand, 39% silt and 51%

A lake has a surface area of 2.6 mi² (6.7 km²) and an average depth of 23 feet (7.0 m). It has one inlet stream with an average discharge of 15.3 ft3/second (0.433 m³/sec) and one outlet stream with an average discharge of 13.9 ft /second (0.394 m³/sec). (a) Compute the volume of the lake. (b) Estimate the average residence time for water in the lake. (c) Consider the water balance for the lake. Name additional possi- ble terms in the balance aside from those listed above. What can you conclude about the total of these other terms?

Problem 2.2: What reservoir capacity is required to produce a uniform yield of 72*10° m³/year for a site where the monthly inflows during a critical flow period are tabulated as below? All monthly flows are in 106 m³/month. Years O 1 2 3 N D 18 8 16 16 21 4 8 15 18 Answer: V = 51*106 m³. J 27 9 35 F M A 13 30 10 2 3 4 15 19 8 M 5 1 5 J 4 0 0 J 3 0 2 A S 0 0 0 0 5 6

Fast.

Find the expected life of a reservoir having an initial capacity of 45000 acre ft . The average annual inflow is 63000 acre ft and sediment inflow of 180 acre ft /yr. Consider the useful life of reservoir to be exceeded when 80% of the original capacity is lost.

Please answer me as soon as possible, it is urgent my deadline is coming, thanks a lot 4. Explain the 4 methods in classifying piling systems.