The latter being the most commonly used form, is simply called a hydrograph. The unit hydrographs can be successfully applied to basin areas of what sq km? Hydrology Multiple Choice Questions and Answers for competitive exams. The solved questions answers in this Hydrographs - 2 quiz give you a good mix of easy questions and tough questions. This contains 10 Multiple Choice Questions for Civil Engineering (CE) Hydrographs - 2 (mcq) to study with solutions a complete question bank. c) Power duration curve b) False The ordinates may be ⦠Hydrographs. What is unit hydrograph helpful in? d) Below 5000 sq km This contains 25 Multiple Choice Questions for GATE Hydrology (mcq) to study with solutions a complete question bank. plotted against time, the graph is a stage hydrograph. The solved questions answers in this Hydrographs - 2 quiz give you a good mix of easy questions and tough questions. Feedback. View Answer, 6. The most important characteristic of a basin affecting a hydrograph due to a given storm is basin lag. In an S-curve derived by a unit hydrograph U of D-h duration, the equilibrium discharge is independent of D, the time base of U represents the time at which the S-curve attains its maximum value, the equilibrium discharge of an S-curve is independent of the catchment area of the basin, A 4 hour unit hydrograph of a basin with area of 1728 km2 can be approximated as a triangle with base period of 48 hours. The unit hydrograph of a specified duration can be used to evaluate the hydrograph of storms of a) same duration only b) ⦠Sequential Easy First Hard First. Sanfoundry Global Education & Learning Series – Energy Engineering. What do you call a graph which is plotted for discharge versus time? Isohyets are the imaginary lines joining the points of equal ... Hydrograph is a plot of discharge and time (B) In hydrographs, time is plotted on X-axis (C) The maximum flow in the river due to ⦠MCQ: S-hydrograph is used to obtain unit hydrograph of_____? View Answer, 9. View Answer, 7. Basin lag is the time difference between the centroids of the input (rainfall excess) and the output (surface runoff). A hydrograph shows two graphs - a bar chart showing rainfall, usually from a storm and a line graph showing discharge from before, during and after the rain storm shown in the bar graph. c) 36000 Start. Thus the peak ordinate of 2 hr UH will be greater than 80 m3/s. The flood hydrograph has a base flow of 20m 3 /s. Irrigation Engineering MCQ question is the important chapter for a Civil Engineering and GATE students. The solved questions answers in this Hydrology quiz give you a good mix of easy questions and tough ⦠During the same month the inflow to the lake from a river was on average 1. b) Hectrograph. d) Flow duration curve 1. Hydrograph is the graphical representation of a) runoff and time b) surface runoff and time c) ground waterflow and time d) rainfall and time Survey â Topic: hydrography, Civil Engineering Multiple Choice Questions / Objective type questions, MCQ's, with question and answers, download free PDF, Civil Engineering, Multiple Choice Questions, Objective type questions, Civil Engineering short notes, rapid fire notes, best theory and many more View Answer, 13. It consists of flow in all the three phases of runoff, viz. (d) If a 50-year flood results from a 2-hour storm having 48 mm of rainfall excess for the first hour and 21 mm of rainfall excess for the second hour, determine the peak streamflow discharge in m ⦠8 Take the Quiz and improve your overall Engineering. b) Over 2500 sq km Natural hydrograph . View Answer, 4. MCQ: The unit hydrograph due to a storm may be obtained by dividing the ordinates of the direct runoff hydrograph by_____? ANSWER: b. U-235 Explanation: the U-235 isotope of uranium is easily and readily fissionable. You can find other Hydrographs - 2 extra questions,
Choose the correct sentence about information available from hydrograph among the following options? Name: Hydrology and Water Resources Engineering Objective Type Question answer Test Subject: Hydrology and Water Resources Topic: Basics Questions: 21 Objective Type Time Allowed: 15 Minutes Important for: B Tech, M Tech, PhD students of Civil Engineering, GATE and Job interviews. Unit hydrograph was explained by Sherman in which year? c) Idea of draught during the year d) Dam water flood b) Idea of rainfall c) When 1mm of runoff is resulted from rainfall Quiz Description:. © 2011-2021 Sanfoundry. b. During a specific month the lake evaporation was 90 mm. c) Around 4000 sq km View Answer, 10. a) Cyanide c) Average duration flow Play as. b) Total volume at that instant, as the area under hydrograph indicates the force of water during the duration Hydrology MCQ Questions Answers â Civil Engineering (CE) 1) The % of earth covered by oceans is about a) 31% b) 51% c) 71% d) 97% 2) The average annual rainfall over the whole of india is estimated as a) 189 cm b) 319 cm c) 89 cm d) 119 cm 3) The percentage of ... Read more Hydrology MCQ Questions Answers Civil ⦠List the various types of hydrographs. Introduction (Part - 1) - Reinforced Cement Concrete, Properties of Metals, Stress (Part - 1) - Strain and Elastic Constants, SSC JE Civil Past Year Paper Non Technical - 2019, Systems Of Linear Equations, Matrix Algebra And Transform Theory - MCQ Test 1, Test: Environment Engineering Practices- 1, Principle Of Effective Stress, Capillarity & Permeability - 1. The magnitude of runoff as ordinates against the corresponding percentage of time as abscissa gives ________ The shape of the recession limb of a hydrograph depends on. 36. b) 2900 Civil Engineering (CE)
What Are Hydrograph And Its Significance? Questions. With the reduction of unit hydrograph duration, 1 cm excess rainfall will occur in reduced period. Hydrology is a branch of science that deals with the study of water on Earth. The unit hydrograph in table 16â1 has a peak rate factor (PRF) of 484 and is the default provided in the WinTRâ20 program. Settings. b) 10000 sq km The starting point of the recession limb, i.e., the point of inflection represents the condition of maximum storage. All Rights Reserved. View Answer, 5. By continuing, I agree that I am at least 13 years old and have read and agree to the. EduRev is a knowledge-sharing community that depends on everyone being able to pitch in when they know something. Unit hydrograph . Difficulty. d) Water scarcity Solutions to hydrology questions exam 19 October, 2007-10-19 Problem 1 (10 credits) A lake has an area of 10 km2 Hydrology exam questions + answers. This set of Energy Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Hydrographs – 1”. Page-4 section-2 2 m3/s and the outflow from the lake via ⦠a) 1925 A hydrograph is a graph for the hydroelectric power plants, what information does this provide? The climatic factors control the rising iimb and the recession limb is independent of storm characteristics, being determined by catchment characteristics only. When is the Hydrograph called as a unit hydrograph? Finally, you can also take the Online Quiz from the Take Hydrology Quiz Button. 1. a) Automatic direction finder d) When 3mm of runoff is resulted from rainfall Instantaneous unit hydrograph is a hydrograph of, unit duration and infinitely small rainfall excess, infinitely small duration and of unit rainfall excess, In Synder’s method of synthetic unit hydrograph development, basin lag is taken as, the time interval between centroid of the rainfall excess and surface runoff, the time interval from mid point of the unit rainfall excess to the peak of the unit hydrograph. What do you call a graph which is plotted for discharge versus time? The hydrograph is the response of a given catchment to a rainfall implicit. Assume water density to be 1000 kg/m 3 : The flood hydrograph has a base flow of 20m 3 /s. View Answer, 15. d) Hydrograph. a) When 1cm of runoff is resulted from a rain fall Above which range should be the unit hydrographs be used? This mock test of Hydrographs - 2 for Civil Engineering (CE) helps you for every Civil Engineering (CE) entrance exam. a) Snow Graph Hydrograph and Flow Duration Curve - MCQs with answers Q1. b) Heavy rainfall 1. Explore the latest questions and answers in Runoff, and find Runoff experts. Answer : Hydrograph is a graphical representation between the discharge or flow with time. If you win, you are an hydrologic genius. c) Drawing web format Power Generation MCQ on 5 meter High Head DAM Find the power generated by a 100% efficient, hydroelectric power station having 5.0 m head and 1.0 m 3 /s. An effective rainfall of 2-hour duration produced a flood hydrograph peak of 200 m 3 /s. To practice all areas of Energy Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers. d) 25000 sq km c) Rate of flow at any particular time during the duration period a) 15000 sq km b) Estimating no of days of rain fall Get your knowledge and take this quiz. What information does the year wise hydrograph gives? MCQs: A unit hydrograph has: - Central Superior Service Test Mcqs (CSS) - CSS Agriculture Questions & Answers - Part-4 If the spatial average rainfall in the watershed for the duration of strom is 2 cm and the average loss rate is 0.4 cm/hour, the peak of 2-hour unit hydrograph (in m 3 /s-cm, up to one decimal ⦠a. Show/Hide Answer 9).A graphical representation of the discharge and time is known as. It is plotted with flow as ordinates (Y-axis) and time intervals as abscissas ( X-axis). a) Deep water flow The mixture of different ⦠An effective rainfall of 2-hour duration produced a flood hydrograph peak of 200 m 3 /s. b) When 3cm of runoff is resulted from rainfall What does hydrograph based on day gives? a) Draught d) Annual dry flow Multiple Choice Questions and Answers (MCQs) on Hydrology and Water Resources Engineering 01. These short solved questions or quizzes are provided by ⦠The point of inflection on the recession limb of a hydrograph represents, the condition of maximum storage in the catchment. You have to select the right answer to the question. a) Around 5000 sq km Chromatography is a physical method that is used to separate and analyse __________ a) Simple mixtures b) Complex mixtures c) Viscous mixtures d) Metals Answer: b Explanation: Chromatography is a physical method that is used to separate complex mixtures. MCQ: The normal annual precipitation at stations X, A, B and C are 700 mm, 1000 mm, 900 mm and 800 mm respectively. 2. d) 1945 During the Quiz End of Quiz. a) 500 1. c) Load duration curve. When the discharge is shown against time, the graph is a discharge hydrograph. students definitely take this Hydrographs - 2 exercise for a better result in the exam. 37. This set of Energy Engineering Multiple Choice Questions & Answers (MCQs) focuses on âHydrographs â 1â. What does CN stands for in hydrology? The peak ordinate of hydrograph is, An instantaneous unit hydrograph is a direct runoff hydrograph, of 1 cm magnitude due to a rainfall excess of 1-h duration, that occurs instantaneously due to a unit rainfall excess of duration-D h, of unit rainfall excess precipitating instantaneously over the catchment. c) Rising cold c. Dimensionless unit hydrograph ⦠The ordinate of the IUH of a catchment at any time t is the, difference in the slopes of the S-curve and 1 -hour UH at that time, If a 4-hour unit hydrograph of a certain basin has a peak ordinate of 80 m3/s, the peak ordinate of a 2-hour unit hydrograph for the same basin will be. c) 1932 What does ADF stand for in hydrology? long questions & short questions for Civil Engineering (CE) on EduRev as well by searching above. agricultural engineering questions and answers listed with objective type interview questions for entry test papers and competitive examination freely available. What is DWF? Learn Irrigation Engineering MCQ questions & answers are available for a Civil Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Electrical and Electronics Engineering Interview Questions; Question 3. Civil Engineering Hydrology MCQ Questions - Set 03 MCQ Hydrology Edit Practice Test: Question Set - 03. See appendix 16A for derivation of the standard NRCS dimensionless hydrograph. If the spatial average rainfall in the watershed for the duration of strom is 2 cm and the average loss rate is 0.4 cm/hour, the peak of 2-hour unit hydrograph (in m 3 /s-cm, up to one decimal ⦠d) Carbon nano-tube a) True Hydrographs of similar rainfalls will be similar in shape. c) Cumulonimbus Multiple Choice Questions Hydrology and Water Resources Engineering - Set 02 MCQ Hydrology Edit Practice Test: Question Set - 02 . hydrograph has a point of inflection approximately 1.7 times the time to peak (T p). d) In deciding the land for hydel power plant The Following Section consists Multiple Choice Questions on Water Resources Engineering. Question No. View Answer. d) Fluid graph Participate in the Sanfoundry Certification contest to get free Certificate of Merit. These short objective type questions with answers are very important for Board exams as well as competitive exams. Generally the weir is aligned at right angles to the direction of the main river current because (A) It ensures less length of the weir (B) It gives better discharging capacity (C) It is economical (D) All of the above Answer: Option D 02. ⦠d) Idea of scarcity of water in the upcoming year View Answer, 12. Section A â Multiple Choice Questions. c) Rain graph View Answer, 14. surface runoff, interflow and base flow. A finite unit hydrograph is indicated as the duration D → 0. b) Channel number Join our social networks below and stay updated with latest contests, videos, internships and jobs! here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Energy Engineering Questions and Answers – Rainfall and its Measurement – 2, Next - Energy Engineering Questions and Answers – Hydrographs – 2, Energy Engineering Questions and Answers – Rainfall and its Measurement – 2, Energy Engineering Questions and Answers – Hydrographs – 2, Geotechnical Engineering I Questions and Answers, Waste Water Engineering Questions and Answers, Internships – Engineering, Science, Humanities, Business and Marketing, Environmental Engineering Questions and Answers, Energy & Environment Management Questions and Answers, Irrigation Engineering Questions and Answers, Energy Engineering Questions and Answers – Ocean Thermal Energy Conversion, Irrigation Engineering Questions and Answers – Water Requirements of Crops – Effective Rainfall, Irrigation Engineering Questions and Answers – Energy Dissipation Below Overflow Spillway – 2, Environmental Engineering Questions and Answers – Storm Water Flow, Energy Engineering Questions and Answers – Solar Constant, Irrigation Engineering Questions and Answers – Energy Dissipation Below Overflow Spillway – 1, Waste Water Engineering Questions and Answers – Classification of Water Carriage System, Irrigation Engineering Questions and Answers – Reservoir Capacity Determination Using Hydrograph and Mass-curve – 2, Energy Engineering Questions and Answers – Classification of Hydro-Plant, Energy Engineering Questions and Answers – Tidal Energy, Waste Water Engineering Questions and Answers – Storm Water Flow, Energy Engineering Questions and Answers – Hydrology – 1. This contains 10 Multiple Choice Questions for Civil Engineering (CE) Hydrographs - 2 (mcq) to study with solutions a complete question bank. A unit hydrograph is a hydrograph resulting from one inch or one mm of rainfall falling uniformly over the total watershed area. The limiting case of a unit hydrograph of zero duration is known as Instantaneous Unit Hydrograph (IUH). If the storm ⦠Chromatography Questions & Answers 1. b) 1928 Derive a 1-hour unit hydrograph for the catchment. This Hydrology MCQ Test contains 20 Multiple Choice Questions. Description This mock test of Hydrology for GATE helps you for every GATE entrance exam. b) Average daily flow 7 Pick up the correct statement from the following: (A) The specified duration of unit hydrograph, is called unit duration (B) The rain during specified duration, is called unit storm (C) The number of unit hydrographs for a given basin, is theoretically infinite (D) All the above Answer: Option D. Question No. a) Estimating runoff from a basin a) Monograph. Quiz Flashcard. c) Knowing the draught months in a year Numerical Methods 20 Multiple Choice Questions and Answers Numerical Methods 20 Multiple Choice Questions and Answers, Numerical method multiple choice question, Numerical method short question, Numerical method question, Numerical method fill in the blanks, Numerical method viva question, Numerical methods short question, Numerical method question and answer, Numerical method question ⦠View Answer, 2. c) 3000 sq km Hydrology Questions and Answers Test your understanding with practice problems and step-by-step solutions. b) Load duration curve b) Dry weather flow A flood-hydrograph due to an isolated storm consists of, surface runoff, interflow, and base flow phases. A.1. a) The mean annual runoff or mean runoff each week of the year a) Mass duration curve View Answer, 3. 1. What is the theoretical number of unit hydrographs for given basin? a) Idea about flood period during the month When a neutron enters a U-235 atom there is a possibility that the nucleus will split and release the enormous amount ⦠Browse through all study tools. View Answer, 11. d) Mean runoff for each month View Answer, 8. ... energy that can be generated by a hydroelectric power plant depends upon objective questions on hydro power plant multiple choice questions ⦠b) Hydrograph d) infinite So peak ordinate of UH will increase and time base will decrease. For example, if a rainfall of P1 inches occurs during a time interval of Ît, the total runoff hydrograph is P1 multiplied by the total unit hydrograph, which is the blue curve (PUH_1) in the ⦠The unit hydrograph due to a storm may be obtained by dividing the ordinates of the direct runoff hydrograph by a) direct runoff volume b) period of storm c) total rainfall d) none of the above Ans: a. Mcq question is the theoretical number of unit hydrograph ( IUH ), agree! ÂHydrographs â 1â agree that I am at least 13 years old and have read and agree to lake. – Energy Engineering, here is complete set of Energy Engineering of 20m 3 /s 2 for Engineering... Discharge versus time lake from a river was on Average 1 Answer, 5 limb is independent of storm,! Specific month the lake evaporation was 90 mm the solved Questions Answers in this Hydrographs - 2 quiz you! Of Hydrographs - 2 quiz give you a good mix of easy Questions and Questions... Free Certificate of Merit solutions a complete question bank of 2 hr will... Channel number c ) Average daily flow c ) 1932 d ) Carbon nano-tube View.... Of Water on Earth hydrograph c ) 36000 d ) 1945 View Answer,.... Water scarcity View Answer, 15 available hydrograph mcq questions hydrograph among the Following options:... ) Rain graph d ) infinite View Answer, 14 Dam Water flood View Answer, 5 lake a... To pitch in when they know something graph which is plotted with flow ordinates! ) Rising cold d ) Carbon nano-tube View Answer, 7 the of. Engineering - set 02 MCQ Hydrology Edit Practice Test: question set - 02 by continuing, agree! Electrical and Electronics Engineering interview Questions ; question 3 a good mix easy... Duration d → 0 Test contains 20 Multiple Choice Questions & Answers ( MCQs ) on Hydrology and Water Engineering... ( X-axis ) in this Hydrographs - 2 quiz give you a good mix of easy Questions and Answers competitive. Hydrograph among the Following Section consists Multiple Choice Questions Hydrology and Water Engineering. The centroids of the direct runoff hydrograph by_____ 20 Multiple Choice Questions and Answers ( )! Set 02 MCQ Hydrology Edit Practice Test: question set - 02 9 ).A graphical representation between the or... Of inflection on the recession limb of a hydrograph due to an isolated storm consists of flow in all three! When the discharge or flow with time when the discharge or flow with time ) Draught b 2900! Will be similar in shape latter being the most important characteristic of a given storm is basin lag the... Dimensionless hydrograph base will decrease km View Answer, 15 ) Cumulonimbus d ) 25000 sq km Answer... Can be successfully applied to basin areas of Energy Engineering Multiple Choice Questions Hydrology and Water Resources Engineering 01 for... Important characteristic of a given storm is basin lag is the response of a hydrograph represents, the of. 3000 sq km c ) 36000 d ) infinite View Answer, 8 Automatic... Solved Questions Answers in this Hydrographs - 2 exercise for a Civil Engineering ( CE ) helps for!, 8 read and agree to the question Multiple Choice Questions on Water Resources Engineering.. Hydrology MCQ Test contains 20 Multiple Choice Questions and Answers ( MCQs on. Be 1000 kg/m 3: the unit hydrograph of zero duration is known as Instantaneous unit hydrograph Multiple Choice.... Graph for the hydroelectric power plants, what information does this provide Education... Answers ( MCQs ) on Hydrology and Water Resources Engineering 10000 sq c... Below and stay updated with latest contests, videos, internships and jobs plants, what does. 36000 d ) Carbon nano-tube View Answer, 14 UH will increase and time will. ) Snow graph b ) Dry weather flow c ) Rain graph d ) 1945 View,. For entry Test papers and competitive examination freely available ) Carbon nano-tube View,! Storm consists of flow in all the three phases of runoff, interflow and... Mcq question is the important chapter for a better result in the sanfoundry Certification contest to free! And stay updated with latest contests, videos, internships and jobs on â. Sentence about information available from hydrograph among the Following options easy Questions and Answers ( MCQs ) Hydrology... River was on Average 1 graph d ) infinite View Answer,.. Point of inflection represents the condition of maximum storage when is the important chapter for better. And competitive examination freely available take Hydrology quiz Button from the take quiz. A base flow phases the response of a basin affecting a hydrograph due an... Will be greater than 80 m3/s direction finder b ) Channel number c ) Cumulonimbus d Water. Resources Engineering Y-axis ) and the output ( surface runoff, interflow, and flow. ) 10000 sq km b ) 1928 c ) Cumulonimbus d ) Carbon nano-tube View,! ) infinite View Answer, 14 sanfoundry Certification contest to get free Certificate of.! True b ) Channel number c ) 36000 d ) Annual Dry flow View Answer stay updated with contests! Km d ) Fluid graph View Answer, 8 hydrograph of zero duration is known Instantaneous... Questions on Water Resources Engineering - set 02 MCQ Hydrology Edit Practice Test question. Engineering MCQ question is the theoretical number of unit Hydrographs can be successfully applied to basin of... A flood-hydrograph due to a rainfall implicit every Civil Engineering and GATE students c... Time is known as point of inflection represents the condition of maximum storage in the catchment of sq! Papers and competitive examination freely available ( CE ) entrance exam control the Rising and! 2 quiz give you a good mix of easy Questions and Answers ( MCQs ) on Hydrology Water! Areas of Energy Engineering called a hydrograph represents, the point of the recession of! 90 mm range should be the unit Hydrographs can be successfully applied to basin areas Energy... Agree to the have to select the right Answer to the question if you win, you can take. On Earth ) Fluid graph View Answer, 7 do you call a graph for the hydroelectric power plants what! ) 1928 c ) Drawing web format d ) infinite View Answer, 5 centroids the... River was on Average 1 MCQs ) focuses on âHydrographs â 1â is simply hydrograph mcq questions a due! Exams as well as competitive exams ( X-axis ) GATE students & Learning Series Energy... Or flow with time ) False View Answer, 8 to the question from a river was Average... ) Fluid graph View Answer, 10 the take Hydrology quiz Button graph which is plotted for discharge time! Dry flow View Answer, 10 ) Snow graph b ) 2900 c Rising. Due to an isolated storm consists of flow in all the three phases of runoff, viz that on... And agree to the lake from a river was on Average 1 due to storm! On the recession limb of a unit hydrograph due to an isolated storm consists hydrograph mcq questions, runoff... Engineering Multiple Choice Questions Hydrology and Water Resources Engineering 01 type hydrograph mcq questions with Answers are very important for exams... Given catchment to a given storm is basin lag ) Rain graph d ) 1945 View Answer, 8 focuses! Reduction of unit hydrograph was explained by Sherman in which year flow d Dam. 90 mm Dam Water flood View Answer, 2 shown against time the... Free Certificate of Merit flow as ordinates ( Y-axis ) and the outflow from the lake from a river on. Was on Average 1 time intervals as abscissas ( X-axis ) it consists,! Hydrograph represents, the graph is a knowledge-sharing community that depends on everyone being to. River was on Average 1 surface runoff, viz can also take the Online quiz from the take Hydrology Button! From hydrograph among the Following options Rain graph d ) infinite View,! When they know something with objective type Questions with Answers are very for... The unit Hydrographs can be successfully applied to basin areas of what sq km d ) 1945 View Answer 10. Unit Hydrographs be used factors control the Rising iimb and the recession limb is independent of storm characteristics being. Form, is simply called a hydrograph simply called a hydrograph represents, the point of inflection the... Agree to the lake evaporation was 90 mm is basin lag runoff, interflow and... Called a hydrograph represents, the condition of maximum storage obtained by dividing the ordinates of the direct hydrograph. Section consists Multiple Choice Questions Hydrology and Water Resources Engineering 01 Water Resources Engineering - set MCQ... Was 90 mm least 13 years old and have read and agree to the I am least! 16A for derivation of the input ( rainfall excess ) and the output ( surface runoff.! On Hydrology and Water Resources Engineering 01, 2 Dry flow View,... Inflection on the recession limb is independent of storm characteristics, being determined by catchment characteristics.. Show/Hide Answer 9 ).A graphical representation of the recession limb of unit! ) 1928 c ) Cumulonimbus d ) infinite View Answer, 2 question 3 set... Power plants, what information hydrograph mcq questions this provide 2 m3/s and the outflow from the lake via ⦠this MCQ... Irrigation Engineering MCQ question is the theoretical number of unit hydrograph due a! And competitive examination freely available Hydrographs of similar rainfalls will be greater than 80 m3/s cold d Carbon! Hydrographs for given basin agree that I am at least 13 years old have. Rainfall excess ) and the outflow from the lake via ⦠this Hydrology Test. A graph for the hydroelectric power plants, what information does this provide of science that deals the... Hydrograph among the Following options Instantaneous unit hydrograph duration, 1 cm excess rainfall will occur in period! Question is the response of a unit hydrograph ( IUH ) rainfall will occur in reduced.!