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Difficulty:
Question Stats:
50% (03:43) correct 50% (03:43) wrong based on 517 sessionsThe drainage area and channel slope of a waterway are positively correlated.  
The channel slope of a waterway is positively correlated with the area of the 100year floodplain boundary.  
A 5year flood has a 20% annual exceedance probability.  
The larger a waterway’s drainage area, the more frequently its floodplain becomes inundated.  
The greater the average channel slope of a waterway, the more prone the waterway is to snowmelt flooding. 
Difficulty:
Question Stats:
52% (00:45) correct 48% (00:41) wrong based on 526 sessionsYes  No  
Snowmelt flooding  
Absorptive capacity of soil  
Drainage area 
Difficulty:
Question Stats:
56% (01:35) correct 44% (01:46) wrong based on 449 sessionsYes  No  
A 100year flood on the Jackson River would directly affect more people than would such a flood on the Porter River.  
In Region X, Evans Creek drains into Jackson River.  
The area representing the 1% annual exceedance probability for Deer Creek is 17 sq km. 

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