If the mean annual runoff of a drainage basin of 10000 km? is 140 m/sec, and theaverage annual precipitation is 105 cm, Estimate the annual average ET for this basin.The mass curve of rainfall as one of the hydrological key concepts in a storm of totalduration 120 minutes as shown in table below. Estimate the amount of rainfall in this stormif the area of the watershed is 4000000 cm?.TableTime20406080100120(minute)CumulativeRainfall(cm)0.20.81.62.02.22.5

As per the guidelines we are supposed to solve only 1 question. Kindly repost other question…

Answered: If the mean annual runoff of a drainage…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A reservoir covers an average surface area of 40 km< with an average depth of 25 m. The inflow to the reservoir comes from a river having an average flow rate of 63.4 m/s which has a suspended sediment concentration of 5 g/L. (a) Estimate the average annual runoff in m³ as well as the average annual sediment load in kg. Determine the most probable life of the reservoir in years to the point where it is 80 percent full of sediment. Assume that the accumulated sediment has a bulk density of 1800 kg/m3. Use the following reservoir trap efficiency table below and interpolate between trapping efficiency values if needed. Compute per increment of 200 x 100 m3 of reservoir capacity. Storage Capacity/Annual Inflow Sediment Trapped, % 0.01 0.1 0.3 0.5 0.7 0.9 45 87 89 92 95 97 99
During a 6 hour storm, the total rainfall was recorded as 15 cm over an area of 900 km2. If the surface runoff determined from the hydrograph is 1x108 m3, calculate the phi-index.
5. From the 1mm 6 hour unity hydrograph given below, derive the 2 hour unit hydrograph. Time 12 18 24 30 (hrs) UH 15 8 3.6 0.6 0.0 (cumecs) What would be the peak surface runoff resulting from 3mm of rainfall falling in the space of two hours?
Compute the 4-hr Snyder's synthetic unit hydrograph for a watershed with an area of 27.8 square miles and a main channel length of 16.3 miles. The main channel length from the outlet to the point opposite the centroid of the watershed is 5.4 miles. The regional parameters are C₁ = 1.7 and C₂ = 0.5. Plot the resulting hydrograph and label the lagged time to peak (tr), time to peak (TDR). peak discharge (Q₂R), and time base (T₁). (similar to 8.4.4)
If the Kuils River has a catchment area of 200 square kilometres and receives in a year 600 mm/year of rainfall, and the runoff from this catchment is 100 mm/year. Assuming that there is no loss to or gain of water from subsurface storage, the amount of evaporation isA) 400 mm/year, B) 500 mm/year, C) 300 mm/year D) 900 mm/year
The total rainfall in a catchment of area 1000 km² during an 8 hours storm is 24 cm, while the surface runoff due to the storm is 2 × 3 108 m³. The p-index is
Solve the problem using the NRCS method for a watershed located right outside New York City, New York for a 50 year storm event. Assume the soil hydrologic group B (65%), C (25%) and D (10%). Given Am-1.29 sm. Impervious = 6.6 acres, Woods =819 acres. Overland flow: L=100 ft, s=4%, fair; Shallow Concentrated Flow: unpaved L= 2300 ft, s=2.7%, stream flow L=9000 ft, s= 3.4% The Time of Concentration is 20¹ 12¹ n = 0.035
Please answer question 2
QI. (a) Describe the Rational' method of designing surface water drainage systems. Define fully any terms used in the description. Discuss the assumptions made in applying the rational method, and comment upon the procedure used to predict the peak flow for a given return period. (b) At the beginning of the month of June, water level of a reservoir with surface area of 7km? was at 20m (Refer to reservoir characteristic curve in Figure Qla). Average longterm monthly rainfall for the month of June recorded at five raingages is summarized in Table Q1 (assuming the same average amount of rainfall is also recorded in the reservoir). The inflow to the reservoir X, located at the downstream catchment outfall, resulted from that rainfall can be estimated as Qin = 0.65PA where P is mean areal rainfall (to be estimated by Thiessen Polygon) from a 36km? catchment area A, schematically shown in Figure lb. An average monthly withdrawal of 6MCM from the reservoir is required for water supply…
The ordinates of a 6h-UH of a watershed having a drainage area of 393 km^2 are given below. For a storm over the watershed having excess rainfall of 5 cm for the first six hours and 15 cm for the second six hours, compute the direct runoff hydrograph ordinates and plot the hydrograph. Compute the depth of direct runoff in cm. Assuming constant baseflow of 100 m^3/s, compute the storm hydrograph ordinates and plot the hydrograph. (List all the DRH ordinates in order, separated by a single space.)

Recommended textbooks for you

Structural Analysis

Civil Engineering

ISBN:

9781337630931

Author:

KASSIMALI, Aslam.

Publisher:

Cengage,

Structural Analysis (10th Edition)

Civil Engineering

ISBN:

9780134610672

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Principles of Foundation Engineering (MindTap Cou…

Civil Engineering

ISBN:

9781337705028

Author:

Braja M. Das, Nagaratnam Sivakugan

Publisher:

Cengage Learning

Structural Analysis

Civil Engineering

ISBN:

9781337630931

Author:

KASSIMALI, Aslam.

Publisher:

Cengage,

Structural Analysis (10th Edition)

Civil Engineering

ISBN:

9780134610672

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Principles of Foundation Engineering (MindTap Cou…

Civil Engineering

ISBN:

9781337705028

Author:

Braja M. Das, Nagaratnam Sivakugan

Publisher:

Cengage Learning

Fundamentals of Structural Analysis

Civil Engineering

ISBN:

9780073398006

Author:

Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning

Publisher:

McGraw-Hill Education

Sustainable Energy

Civil Engineering

ISBN:

9781337551663

Author:

DUNLAP, Richard A.

Publisher:

Cengage,

Traffic and Highway Engineering

Civil Engineering

ISBN:

9781305156241

Author:

Garber, Nicholas J.

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS

If the mean annual runoff of a drainage basin of 10000 km? is 140 m/sec, and the average annual precipitation is 105 cm, Estimate the annual average ET for this basin.