Quiz 4-5
Normal ratio method is used for :
Estimating of missing preciptiation data
Estimating average precipitation data
Estimate variability of precipitation data
None of the answers
Thiessen polygon method is used to estimate
average rainfall in a region
missing rainfall at a site
maximum rainfall
None of the answers
A float-type rain gage is a
Recording rain gage
Non recording rain gage
None of the answers
The phi-index for a 3 hour storm event is 0.2 inches/hour rainfall in first hour, 0.7 in/hr, second hour is 0.1 in./hr and third hour 0.6 in/hr what is the depth of water infiltrated :
0.5 inches
None of the answers
0.6 inches
0.2 inches
3.7 in/hr
0.6 in/hr
0 in/hr
None of the answers
greater than 3.7 in/hr
None of the answers
3.7 in/hr
0.6 in/hr
This instrument is a :
Ring infiltrometer
None of the answers
Double Ring Infiltrometer
Evaporation pan
In Horton's Infiltration equation, the unit of ultimate infiltration rate is:
Depth, units: Inches
None of the answers
Area, units: inch^2
rate, units:inches/hour
When rainfall intensity [r] exceeds maximum infiltration rate [ir] of the
Ponding of water will occur
no infiltration
none of the answers
actual infiltration > ir
The phi-index for a 3 hour storm event is 1.2 inches/hour rainfall in first hour, 0.8 in/hr, second hour is 0.2 in./hr and third hour 0.6 in/hr what is the depth of runoff :
None of the answers
1.2 inches
1.6 inches
0 inches
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