Certified Storm Water Operator Exam verified with
correct answers 2026/2027 version
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.
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
Texture refers to the ___________ or _____________________ of ____________ of
soil particles in soil. (Unit 1)- answer>>>Size; combination of sizes
, Structure refers to the degree to which individual soil particles _____________ to each
other. (Unit 1)- answer>>>Adhere
Slope _________________, _____________________, and ___________________
affect erodibility. (Unit 1)- answer>>>Steepness, length, and roughness.
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
Sediment deposition occurs when soil-laden wind or water ____________ enough to
allow the soil particles to settle out. (Unit 1)- answer>>>Slows
The ____________, _______________, and ________________ of the transported
particles influence the rate at which they settle out. (Unit 1)- answer>>>Size, shape, and
density.
Smaller, lighter particles such as __________________ particles are easily transported
and are _____________________ to settle out. (Unit 1)- answer>>>Clay-sized;
slow/difficult
The Five Principles of Erosion and Sedimentation Control are:
-____________ the development to fit the natural site conditions
-Expose the ________________ practical area for the _________________ possible
time
-Apply __________ _________________ prevention practices as first life of defense
-Apply ___________________ control practices to prevent off-site sedimentation
-Implement a thorough __________________, ___________________, and
_____________________ program. (Unit 1)- answer>>>- Plan
- Smallest; shortest
- Soil erosion
- Sediment
- Inspection, maintenance, and follow-up
The most effective way to prevent erosion is keep the soil covered with
__________________. (Unit 1)- answer>>>Vegetation
correct answers 2026/2027 version
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.
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
Texture refers to the ___________ or _____________________ of ____________ of
soil particles in soil. (Unit 1)- answer>>>Size; combination of sizes
, Structure refers to the degree to which individual soil particles _____________ to each
other. (Unit 1)- answer>>>Adhere
Slope _________________, _____________________, and ___________________
affect erodibility. (Unit 1)- answer>>>Steepness, length, and roughness.
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
Sediment deposition occurs when soil-laden wind or water ____________ enough to
allow the soil particles to settle out. (Unit 1)- answer>>>Slows
The ____________, _______________, and ________________ of the transported
particles influence the rate at which they settle out. (Unit 1)- answer>>>Size, shape, and
density.
Smaller, lighter particles such as __________________ particles are easily transported
and are _____________________ to settle out. (Unit 1)- answer>>>Clay-sized;
slow/difficult
The Five Principles of Erosion and Sedimentation Control are:
-____________ the development to fit the natural site conditions
-Expose the ________________ practical area for the _________________ possible
time
-Apply __________ _________________ prevention practices as first life of defense
-Apply ___________________ control practices to prevent off-site sedimentation
-Implement a thorough __________________, ___________________, and
_____________________ program. (Unit 1)- answer>>>- Plan
- Smallest; shortest
- Soil erosion
- Sediment
- Inspection, maintenance, and follow-up
The most effective way to prevent erosion is keep the soil covered with
__________________. (Unit 1)- answer>>>Vegetation
