Question 1

What method yields a hydrograph for use in detention basin design?

Accepted Answer

A)  Rational Method
B)  Modified Rational Method
C)  Manning's equation
D)  NRCS method B

Question 2

To compute rainfall losses, the NRCS method uses ____.

Accepted Answer

A)  the runoff coefficient
B)  the concept of initial losses based on cover characteristics
C)  the 100-year storm
D)  the 2-year peak runoff

Question 3

The usual basin size used in the Rational Method is less than ____.

Accepted Answer

A)  5 acres
B)  15 acres
C)  30 acres
D)  100 acres

Question 4

The primary application of the Rational Method is in estimating peak runoff for small drainage basins.

Accepted Answer

A) True 
 B)False

Question 5

Most field conditions yield an n-value between 0.40 and 0.60.

Accepted Answer

A) True 
 B)False  False

Question 6

Peak runoff is computed by ____.

Accepted Answer

A)    Tt=0.007(nL) 0.8(P2) 0.5S0.4T _ { t } = \frac { 0.007 ( n L )  ^ { 0.8 } } { \left( P _ { 2 } \right)  ^ { 0.5 _ { S } 0.4 } }Tt​=(P2​) 0.5S​0.40.007(nL) 0.8​ 
B)    Q=(P−Ia) 2(P−Ia) +SQ = \frac { \left( P - I _ { a } \right)  ^ { 2 } } { \left( P - I _ { a } \right)  + S }Q=(P−Ia​) +S(P−Ia​) 2​ 
C)    qp=quAmQq _ { p } = q _ { u } A _ { m } Qqp​=qu​Am​Q 
D)    S=1000CN−10S = \frac { 1000 } { C N } - 10S=CN1000​−10

Question 7

The design storm frequency usually depends on the size of the ___________________ to be designed.

Accepted Answer

The answer of The design storm frequency usually depends on...

Question 8

When using the Rational Method, the drainage basin ____________________ characteristics should be homogeneous.

Accepted Answer

The answer of When using the Rational Method, the drainage...

Question 9

The ____________________ Method is a procedure for computing a synthetic runoff hydrograph based on empirically determined factors developed by the Soil Conservation Service (SCS).

Accepted Answer

The answer of The ____________________ Method is a procedure for...

Question 10

There is no way to account for infiltration and evapotranspiration in the Rational Method.

Accepted Answer

A) True 
 B)False

Question 11

At the core of the NRCS Method is the dimensionless unit hydrograph.

Accepted Answer

A) True 
 B)False

Question 12

The Rational Method is a method to compute ____.

Accepted Answer

A)  overland flow
B)  drainage area
C)  runoff
D)  rainfall C

Question 13

The Modified Rational Method is intended as a simple approximation for small detention basins with ___________________ outlet structures.

Accepted Answer

The answer of The Modified Rational Method is intended as...

Question 14

The Rational Method is intended to compute the entire hydrograph of a rainfall event.

Accepted Answer

A) True 
 B)False

Question 15

The NRCS Method results in a more ____________________ depiction of the runoff process than does the Rational Method.

Accepted Answer

The answer of The NRCS Method results in a more...

Exam 11: Runoff Calculations

What method yields a hydrograph for use in detention basin design?

Correct Answer
verified
B

To compute rainfall losses, the NRCS method uses ____.

Correct Answer
verified

The usual basin size used in the Rational Method is less than ____.

Correct Answer
verified

The primary application of the Rational Method is in estimating peak runoff for small drainage basins.

Correct Answer
verified

Most field conditions yield an n-value between 0.40 and 0.60.

Correct Answer
verified
False

Peak runoff is computed by ____.

Correct Answer
verified

The design storm frequency usually depends on the size of the ___________________ to be designed.

Correct Answer
verified

When using the Rational Method, the drainage basin ____________________ characteristics should be homogeneous.

Correct Answer
verified

The ____________________ Method is a procedure for computing a synthetic runoff hydrograph based on empirically determined factors developed by the Soil Conservation Service (SCS).

Correct Answer
verified

There is no way to account for infiltration and evapotranspiration in the Rational Method.

Correct Answer
verified

At the core of the NRCS Method is the dimensionless unit hydrograph.

Correct Answer
verified

The Rational Method is a method to compute ____.

Correct Answer
verified
C

The Modified Rational Method is intended as a simple approximation for small detention basins with ___________________ outlet structures.

Correct Answer
verified

The Rational Method is intended to compute the entire hydrograph of a rainfall event.

Correct Answer
verified

The NRCS Method results in a more ____________________ depiction of the runoff process than does the Rational Method.

Correct Answer
verified

Exam 11: Runoff Calculations

What method yields a hydrograph for use in detention basin design?

Correct AnswerverifiedB

To compute rainfall losses, the NRCS method uses ____.

Correct AnswerverifiedShow Answer

The usual basin size used in the Rational Method is less than ____.

Correct AnswerverifiedShow Answer

The primary application of the Rational Method is in estimating peak runoff for small drainage basins.

Correct AnswerverifiedShow Answer

Most field conditions yield an n-value between 0.40 and 0.60.

Correct AnswerverifiedFalse

Peak runoff is computed by ____.

Correct AnswerverifiedShow Answer

The design storm frequency usually depends on the size of the ___________________ to be designed.

Correct AnswerverifiedShow Answer

When using the Rational Method, the drainage basin ____________________ characteristics should be homogeneous.

Correct AnswerverifiedShow Answer

The ____________________ Method is a procedure for computing a synthetic runoff hydrograph based on empirically determined factors developed by the Soil Conservation Service (SCS).

Correct AnswerverifiedShow Answer

There is no way to account for infiltration and evapotranspiration in the Rational Method.

Correct AnswerverifiedShow Answer

At the core of the NRCS Method is the dimensionless unit hydrograph.

Correct AnswerverifiedShow Answer

The Rational Method is a method to compute ____.

Correct AnswerverifiedC

The Modified Rational Method is intended as a simple approximation for small detention basins with ___________________ outlet structures.

Correct AnswerverifiedShow Answer

The Rational Method is intended to compute the entire hydrograph of a rainfall event.

Correct AnswerverifiedShow Answer

The NRCS Method results in a more ____________________ depiction of the runoff process than does the Rational Method.

Correct AnswerverifiedShow Answer

Correct Answer
verified
B

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
False

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified