The isohyets for annual rainfall over a catchment were drawn and the area enclosed by theisohyets is given in the table below.Determine the average depth of annual rainfall over the catchmentIsohyets cmArea enclosed km²403520306025120203001542010500

Isohyets are draw and the area enclosed by isohyets is given in the table below. Isohyets…

Answered: The isohyets for annual rainfall over a…

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

Using Isohyetal Method, find average rainfall over a catchment. The datas are: Isohyetes (cm) 12 13 14 15 16 17 Area (km?) 22 80 110 89 70 Average Precipitation 12.5 13.5 14.5 15.5 16.5
A catchment is idealized as a 30km × 30km square. It has four rain gauges as . During a month, the precipitation at these gauges is measured as A=(309) mm, B=(292) mm, C=(279) mm and D=(297) mm. Compute the average precipitation (in mm, up to one decimal place) over the catchment during this month by using the Thiessen polygon method. [11]A BD C
A catchment with an area A = 85 km^2, has four rainfall gauges (P1 – P4) according to the figure. Use the rainfall data in the table to determine the areal rainfall over the catchment. a.Use the arithmetic averaging method to calculate areal rainfall. b.Use the Thiessen method to calculate areal rainfall.
Using the following values, give the water budget equation for this lake, and solve for annual groundwater flow. There are no other components. Period of time: Calander Year.Lake volume at beginning of year: 10,000. m^3Lake volume at end of year: 9,000. m^3Stream inflow: 700. m^3/month ET: 54.0 m^3/monthGW flow: unknown Give appropriate sig figs and show work Budget Equation: Inflows = Outflows + Change in Storage
The following is the hydrograph resulted from a rainfall intensity of 2 cm/hr for a duration of 2 hours. If the index for the catchment is 0.5 cm/hr, use this information to develop the 2h.UH The Hydrograph Time (hours) Q (m³/s) 0 10 1 40 2 28 3 22 4 16 5 10
A watershed covering 28.16 mi2 has a system of seven rainfall gages, as shown on the map in the Figure. Using the total storm rainfall depths given in the accompanying table, determine the average rainfall over the watershed using: (a) arithmetic averaging and (b) the Thiessen polygon method. Gage ABCDEFG А с P₁ (in.) 5.13 6.74 9.00 6.01 5.56 4.98 4.55 A₁ (mi²) 1.74 6.70 1.77 13.02 0.83 2.68 1.42 28.16 B. . E 1 in. = 3.9 mi .F . G
Q2. Lines delineating a particular measurement are drawn within the watershed. Precipitation data and the area in between each isohyet are shown in the table below. Estimate the average precipitation within this watershed. Isohyetal line (cm) Area (cm²) 30 - 40 40 - 50 50 - 60 60 - 70 70 - 80 80 - 90 90-100 32 162 155 92 228 120 65
A catchment is idealized as a 30km x 30km square. It has four rain gauges as shown in the Figure Q4. During a month, the precipitation at these gauges is measured as A=(300 mm, B=(285 ) mm, C=(272 ) mm and D=(290- ) mm. Compute the average precipitation (in mm, up to one decimal place) over the catchment during this month by using the Thiessen polygon method. A D Figure Q4- Watershed boundary and rainfall gauges
Draw Thiessen polygons on the catchment shown below. If the rainfall depths recorded by gauge A, B and C are 12 mm, 10 mm, 6 mm and the corresponding polygon areas are 2.0 km2, 9 km2 and 2 km2, estimate the catchment average rainfall depth and the total volume of water from this rainfall event.
Question 4 A catchment is idealized as a 30km x 30km square. It has four rain gauges as shown in the Figure Q4. During a month, the precipitation at these gauges is measured as A=(300+X) mm, B=(285+X) mm, C=(272+X) mm and D=(290+X) mm. Compute the average precipitation (in mm, up to one decimal place) over the catchment during this month by using the Thiessen polygon method. A X=3 Figure Q4- Watershed boundary and rainfall gauges
4. A river stage is readily measured by reading a USGS stream gage placed in the riverbed. During a storm event, the stage can be measured directly. From this, a discharge hydrograph can be inferred.The following stage levels were measured during a storm event: Analysis of this river revealed adischarge-stage correlation of Q = 12.43h2.658, where Q = discharge (m3/s) and h = stage (m).Provide both a stage hydrograph and a discharge hydrograph for this storm event.Clearly mark all axes and give each graph a title.
A catchment has 4 sub areas. The annual precipitation and evaporation from each of the the sub-areas are given below. Assume that no change in the groundwater storage on an annual basis and calculate for the whole catchment the values of annual average precipitation and evaporation. What are the annual runoff coefficients for the sub-areas and for the total catchment taken as a whole? Sub Area Area (Mm^2). Annual Precipitation (mm) Annual Evaporation (mm). A 10.70 1030 530 В 3 830 438 8.20 900 430 D 17 1300 600 The annual average precipitation is mm The annual average evaporation is mm Runoff coefficient @ sub area A is Runoff coefficient @ sub area B is Runoff coefficient @ sub area C is Runoff coefficient @ sub area D is Total runoff coefficient is

SEE MORE QUESTIONS

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

The isohyets for annual rainfall over a catchment were drawn and the area enclosed by the isohyets is given in the table below. Determine the average depth of annual rainfall over the catchment Isohyets cm Area enclosed km² 40 35 20 30 60 25 120 20 300 15 420 10 500