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A catchment has an area of 150 ha and a runoff/ rainfall ratio of 0.40. If due to a 10 cm rainfall over the catchment a stream flow at the catchment outlet lasts for 10 hours, the average stream flow in the period is
- a)1.33 m3/s
- b)16.7 m3/s
- c)100m3/minute
- d)6x104m3/hour
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
A catchment has an area of 150 ha and a runoff/ rainfall ratio of 0.40...
The average stream flow
Most Upvoted Answer
A catchment has an area of 150 ha and a runoff/ rainfall ratio of 0.40...
Given:
Area of the catchment (A) = 150 ha = 15000 m²
Runoff/rainfall ratio (R) = 0.40
Rainfall (P) = 10 cm = 0.1 m
Stream flow duration (T) = 10 hours
Calculation:
1. Total rainfall on the catchment = A x P
= 15000 m² x 0.1 m
= 1500 m³
2. Total runoff from the catchment = R x P x A
= 0.40 x 0.1 m x 15000 m²
= 600 m³
3. Average stream flow rate = Total runoff / Stream flow duration
= 600 m³ / 10 hours
= 60 m³/hour
4. Converting the flow rate to m³/minute
= 60 m³/hour x 1 hour / 60 minutes
= 1 m³/minute
5. Multiplying with 100 to get the answer in 100 m³/minute
= 100 x 1 m³/minute
= 100 m³/minute
Therefore, the average stream flow rate during the given period is 100 m³/minute. Hence, option (c) is the correct answer.
Area of the catchment (A) = 150 ha = 15000 m²
Runoff/rainfall ratio (R) = 0.40
Rainfall (P) = 10 cm = 0.1 m
Stream flow duration (T) = 10 hours
Calculation:
1. Total rainfall on the catchment = A x P
= 15000 m² x 0.1 m
= 1500 m³
2. Total runoff from the catchment = R x P x A
= 0.40 x 0.1 m x 15000 m²
= 600 m³
3. Average stream flow rate = Total runoff / Stream flow duration
= 600 m³ / 10 hours
= 60 m³/hour
4. Converting the flow rate to m³/minute
= 60 m³/hour x 1 hour / 60 minutes
= 1 m³/minute
5. Multiplying with 100 to get the answer in 100 m³/minute
= 100 x 1 m³/minute
= 100 m³/minute
Therefore, the average stream flow rate during the given period is 100 m³/minute. Hence, option (c) is the correct answer.
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A catchment has an area of 150 ha and a runoff/ rainfall ratio of 0.40. If due to a 10 cm rainfall over the catchment a stream flow at the catchment outlet lasts for 10 hours, the average stream flow in the period isa)1.33 m3/sb)16.7 m3/sc)100m3/minuted)6x104m3/hourCorrect answer is option 'C'. Can you explain this answer?
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A catchment has an area of 150 ha and a runoff/ rainfall ratio of 0.40. If due to a 10 cm rainfall over the catchment a stream flow at the catchment outlet lasts for 10 hours, the average stream flow in the period isa)1.33 m3/sb)16.7 m3/sc)100m3/minuted)6x104m3/hourCorrect answer is option 'C'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about A catchment has an area of 150 ha and a runoff/ rainfall ratio of 0.40. If due to a 10 cm rainfall over the catchment a stream flow at the catchment outlet lasts for 10 hours, the average stream flow in the period isa)1.33 m3/sb)16.7 m3/sc)100m3/minuted)6x104m3/hourCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A catchment has an area of 150 ha and a runoff/ rainfall ratio of 0.40. If due to a 10 cm rainfall over the catchment a stream flow at the catchment outlet lasts for 10 hours, the average stream flow in the period isa)1.33 m3/sb)16.7 m3/sc)100m3/minuted)6x104m3/hourCorrect answer is option 'C'. Can you explain this answer?.
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