a- 30.1%6- The percent of groundwater to the total earth's water is:c-0.9%b- 1.2%d- 0.75%c- all are false7- The probability of a flood cqual to or grcater than 50 year flood, occurring at least one innext 50 years isa- 0.02b-0.636c-0.364d- 1.0e- all are false

Hear option (d) is correct that is 0.75% is the groundwater is available as a fresh water source on…

Answered: a- 30.1% 6- The percent of groundwater…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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The following are some of the uses of surface reservoirs: Hydroelectric power generation • Regulating downstream releases • Recreation Flood control Providing water for agriculture • Municipal and industrial uses O True False
A city is expanding its water resources to include extracting water from a river that has an annual 7-day low flow that follows a Pearson Type III distribution with a mean of 20.5, standard deviation of 4.2, and skewness coefficient of 1.4. The city is willing to accept a one in twenty chance that the low flow will fall below the minimum level for water extraction in the next 30 years. What is the return period for which the intake structure should be designed?Tdesign Answer = 585 yrs
8.10. A water-resource system is designed for a 50-year storm. Assuming that storm occurrence is a Bernoulli process, what is the probability that the 50-year storm will be equaled or exceeded 1 year after the system is constructed? Within the first 6 years?
Compute the runoff from 5 inches of rainfall on a 1000-acre watershed. The hydrologic soil group is 50 percent Group B and 50 percent Group C interspersed throughout the watershed. Antecedent moisture condition II is assumed. The land use is given below followed by the reference table for Runoff CNs.
4. Assuming that all groundwater runoff to the oceans comes from fresh groundwater, calculate the average residence time of this water.. A) 28468 years B) 497.87 years C) 4786.4 years Dj 10636 years E) None of the above
(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 36km² catchment area A, schematically shown in Figure 1b. An average monthly withdrawal of 6MCM from the reservoir is required for water supply purpose. Assume there is no losses from the reservoir except evaporation at 120cm/year. Determine the volume of water required to be pumped into the reservoir in that specific month to achieve a safe operating level at 21m. 80 70 60 50 V = 4.7H - 70 40 30 20 10 Note: MCM is million m' 5…
Q2: For a 70 years return period, determine the probability of flood occurs: a. twice in 25 successive years. b. one time in 10 successive years. c. at least once in 20 years. d. non at 50 years.
Estimate the amount of depression storage for a storm occurring on a watershed with an area of 10 km2 and depression storage capacity of 100,000 m3 . The precipitation excess for the storm is 10 cm. Explain your calculation and state any assumption.
WQI -0.22 SIDO+0.19 SIBOD+0.16 SICOD+01SSIAN + 0.16 SISS+ 0.12 SipH The result of water quality analysis on a raw river water are as follows: UTM Parameter Value Sub Indes (SI) Equation SICOD-99.1-1.33 X SICOD-10Be SIBOD-100.4-4.32 X SIBOD-108 e 01X SIAN - 100.5 - 1O5 X SIAN =94e -SX-2) SIAN- SISS-975e 01X SISS-71 e -0.01S X SISS-e Sipl-172-172X+ 5.02 X Sipl-242+95.5 X-667 X SipH--181 +24X-6.05 X Sipl- S36-7x+276 X COD: 35 mg/L, BOD: 7 mg/L, AN: 2.5 mg/L, SS: 475 mg/L, pH: 5, DO: 5 mg/L COD IfXS20 IfX>20 BOD Irxss AN Calculate the sub-index of ammoniacal nitrogen and acidity of the river water. are38 Q Zoom 20 and 57 B 20 and 69 C O and 69 O and 57
Q.3. Floods in a stream have the mean 600 m³/s and the standard deviation 400 m³/s. Please answer the following questions assuming normal distribution. What is the probability that the flood flow any year exceeds 700 m³/s? What is the 100-year flood discharge? а) b)
What are the primary factors influencing the formation and behavior of groundwater in a given hydrological system?
WILL RATE IF CORRECT!

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a- 30.1% 6- The percent of groundwater to the total earth's water is: c-0.9% b- 1.2% d- 0.75% c- all are false 7- The probability of a flood cqual to or grcater than 50 year flood, occurring at least one in next 50 years is a- 0.02 b-0.636 c-0.364 d- 1.0 e- all are false