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CSWO Exam 2025 / Certified Storm Water Operator
Exam Prep with 100 Questions and Correct Answers
from the CSWO and SESC Comprehensive Training
Manual
Erosion is the process where soil particles are
______________ or ____________ and put in motion. (Unit 1) -
...ANSWER...✓✓ Dislodged; detached
Sedimentation is the process whereby detached particles
are ___________________ elsewhere. (Unit 1) -
...ANSWER...✓✓ Deposited
Sediment is solid ________________ or _______________
particulate matter that has been removed from its site of
origin by ___________, _____________, or ______________ and
deposited elsewhere. (Unit 1) - ...ANSWER...✓✓ Mineral;
organic; water; wind; gravity
Accelerated erosion is a speeding up of erosion due to
___________activity. (Unit 1) - ...ANSWER...✓✓ Human
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Major erosive forces are water and ___________. (Unit 1) -
...ANSWER...✓✓ Wind
In some areas, more soil is lost from ______________
erosion than from water erosion. (Unit 1) -
...ANSWER...✓✓ Wind
The effects of _____________ erosion are usually more
visible than _____________ erosion. (Unit 1) -
...ANSWER...✓✓ Water; wind
The three categories of overland erosion are: (Unit 1) -
...ANSWER...✓✓ Sheet, rill, gully
_____________ erosion is the removal of a uniform layer of
soil from rain-splash and storm water runoff. (Unit 1) -
...ANSWER...✓✓ Sheet
The ____________ of erosion defines the difference between
rills and gullies. (Unit 1) - ...ANSWER...✓✓ Depth
The physical factors affecting erosion are: (Unit 1) -
...ANSWER...✓✓ Climate, vegetative cover, soils, slope.
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Erosion and sedimentation may cause:
-Loss of ___________ _______________
-__________________ damage to roads, buildings or bridges.
-___________________, resulting in reduction of fish
_______________ _________, reduced _____________ or
_______________ _______________ capacity, and ______________
costs to maintain ______________.
-_________________ loading. (Unit 1) - ...ANSWER...✓✓ -
fertile topsoil
- Structural
- Deposition; spawning areas; channel; storm drain;
increased; turbidity
- Pollutant
The climatic factors that strongly influence erosion and
runoff are _______________ amount, _______________, and
________________. (Unit 1) - ...ANSWER...✓✓ Rainfall,
frequency, intensity.
Soil properties influencing erodibility include: (Unit 1) -
...ANSWER...✓✓ Texture, structure, cohesion, natural
drainage class
CSWO Exam 2025 / Certified Storm Water Operator
Exam Prep with 100 Questions and Correct Answers
from the CSWO and SESC Comprehensive Training
Manual
Erosion is the process where soil particles are
______________ or ____________ and put in motion. (Unit 1) -
...ANSWER...✓✓ Dislodged; detached
Sedimentation is the process whereby detached particles
are ___________________ elsewhere. (Unit 1) -
...ANSWER...✓✓ Deposited
Sediment is solid ________________ or _______________
particulate matter that has been removed from its site of
origin by ___________, _____________, or ______________ and
deposited elsewhere. (Unit 1) - ...ANSWER...✓✓ Mineral;
organic; water; wind; gravity
Accelerated erosion is a speeding up of erosion due to
___________activity. (Unit 1) - ...ANSWER...✓✓ Human
,2|Page
Major erosive forces are water and ___________. (Unit 1) -
...ANSWER...✓✓ Wind
In some areas, more soil is lost from ______________
erosion than from water erosion. (Unit 1) -
...ANSWER...✓✓ Wind
The effects of _____________ erosion are usually more
visible than _____________ erosion. (Unit 1) -
...ANSWER...✓✓ Water; wind
The three categories of overland erosion are: (Unit 1) -
...ANSWER...✓✓ Sheet, rill, gully
_____________ erosion is the removal of a uniform layer of
soil from rain-splash and storm water runoff. (Unit 1) -
...ANSWER...✓✓ Sheet
The ____________ of erosion defines the difference between
rills and gullies. (Unit 1) - ...ANSWER...✓✓ Depth
The physical factors affecting erosion are: (Unit 1) -
...ANSWER...✓✓ Climate, vegetative cover, soils, slope.
, 3|Page
Erosion and sedimentation may cause:
-Loss of ___________ _______________
-__________________ damage to roads, buildings or bridges.
-___________________, resulting in reduction of fish
_______________ _________, reduced _____________ or
_______________ _______________ capacity, and ______________
costs to maintain ______________.
-_________________ loading. (Unit 1) - ...ANSWER...✓✓ -
fertile topsoil
- Structural
- Deposition; spawning areas; channel; storm drain;
increased; turbidity
- Pollutant
The climatic factors that strongly influence erosion and
runoff are _______________ amount, _______________, and
________________. (Unit 1) - ...ANSWER...✓✓ Rainfall,
frequency, intensity.
Soil properties influencing erodibility include: (Unit 1) -
...ANSWER...✓✓ Texture, structure, cohesion, natural
drainage class
