SRT Hydrology and River Hazards

Question 1

What is a strainer in a river environment?

Accepted Answer

An obstruction that lets water through but traps solids

Answer

A submerged boulder

Answer

A floating log

Answer

A man-made water gate

Question 2

Which river feature can recirculate objects or people indefinitely?

Accepted Answer

Hydraulic

Answer

Eddy

Answer

Strainer

Answer

Undercut

Question 3

What is the term for water moving faster around a bend?

Accepted Answer

Centrifugal flow

Answer

Laminar flow

Answer

Counter flow

Answer

Backflow

Question 4

Which hazard involves water flowing under a rock ledge or embankment?

Accepted Answer

Undercut

Answer

Hydraulic

Answer

Eddy

Answer

Wave

Question 5

What is the safest position for swimming in moving water?

Accepted Answer

Feet first on back

Answer

Head down, feet behind

Answer

Vertical floating

Answer

Face down freestyle

Question 6

Why are eddies important in swiftwater environments?

Accepted Answer

They provide calm areas for rescue and rest

Answer

They pull swimmers underwater

Answer

They speed up water flow

Answer

They form large waves downstream