If the following runoff is created by 5 hours of rainfall with a depth of 30 cm. What is the catchment area in sq km? Discharge (m3/s) Hours 0 2 4 6 8 10 27 0 21 48 33 24 18

A catchment Area of 140 km^2 received 120 cm of rainfall in a year. At the outlet of the catchment in the stream draining the catchment was found to have an average rate of 2.0 cubic meters per second (cms) for 3months, 3.0 cms for 6 months, and 5.0 cms for 3 months. (a) What is the runoff incurred in the system in Million Cubic Meters (MCM)? Blank 1 (b) Amount of Losses (L) in Million cubic meters (MCM)? Blank 2 (c) What is the runoff coefficient? Blank 3 Blank 1 Add your answer Blank 2 Add your answer Blank 3 Add your answer

2.2 cm of runoff results from a storm that lasted 24 hours over an area of 195.0 km². Assume all the runoff goes into a nearby river channel that was empty at the beginning of the storm, what is the average flow of the water in the channel in ft³/s and m³/s.

In a given month, a watershed with an area of 1500 m^2 received 100 cm of precipitation. During the same month, the loss due to evaporation was 15cm. Ignore losses due to transpiration and infiltration due to ground water. What would be the average rate of flow measured in a gage at the outlet of the watershed in m^3/day?

Compute the runoff from a 5-in. rainfall from a watershed which has four soil groups overall and the land cover is fair grass cover. Also, estimate the effect of urbanization if the land cover changed into four urban categories as shown below: Land Use Land use Soil Group Before Urbanization After urbanization Grass Residential 40% C Grass Grass 25% D Grass Commercial 20% Grass Industrial 15% D CN CN Before Urbanization After Urbanization 79 83 83 80 79 94 33 83 93

6. Runoff from a 200 mile² catchment drains into a reservoir than has an average surface area of 4000 acres. The reservoir is to be used for municipal water supply. Annual rainfall over the watershed is 40 inches and the annual runoff is 2 inches. Evaporation from the reservoir averages 40 inches per year. If the surface area of the reservoir is roughly constant with depth, how much will the reservoir depth change in one year?

A catchment with an area of 5225 km^2 received an annual precipitation of 2200mm.The average rate of flow in the river draining the area is 60m^3/s Estimate the amount of water lost due to the combined effects of evaporation, transpiration and infiltration for one year period. Calculate the ratio of runoff and precipitation. Give answer in meter.

The table below shows the monthly data for the catchment area.a. Compute the annual catchment volume in km3b. Determine the month where the catchment volume is the highest.c. What is the highest monthly catchment volume in km3.

For a catchment in India, the mean monthly temperatures are given. Estimate the runoff and annual runoff coefficient by Khosla’s method.   Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Temperature (℃) 12 16 21 27 31 34 31 29 28 29 19 14 (Pm) (cm) 3 3 2 0 22 32 48 55 21 15 10 1