Sometimes debris, submerged trees, or fences can become hazards for those engaged in water rescues. These hazards are called strainers.
A strainer can be any object which allows the water to pass through but obstructs the passage of a person. Examples of strainers include cars, trees, man-made barricades and debris.
Strainers are life-threatening obstacles which should be avoided while a person is in water. A strainer can trap a person very easily. It does not require much current to grab and submerge a swimmer.
If a person is on a boat or craft approaching a strainer, the best way to cope is to try to get to shore above it and navigate around the obstacle. However, a swimmer should aggressively work to swim around the strainer.
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