CPESC EXAM QUESTIONS WITH
CORRECT SOLUTIONS||100%
GUARANTEED PASS||A+
GRADED||UPDATED 2026/2027
SYLLABUS||<<NEWEST VERSION>>
Surface Runoff Predictions - ANSWER ✓ Runoff volume
Peak rate of discharge
isoheytal map - ANSWER ✓ rainfall amounts provided through meteorological
records
maps provide 2 to 100 year frequency, 24 duration storms most of the US
Storm Types - ANSWER ✓ USDA categorized storm events into 4 types based
on rainfall
Divert Runoff (Diversions) - ANSWER ✓ Earth Dike
Perimeter Dike
Water Bars
Check Dams
Temporary Swales
Convey Runoff (Waterways) - ANSWER ✓ Concrete lined channels
Rock lined waterways
Grassed waterway
Grade stabilization structure
slope drains
Stabilize Outlet - ANSWER ✓ Rock outlet protection
level spreader
paved flume
Soil Stabilization - ANSWER ✓ Erosion Control
,combined with runoff management to limit or control erosion.
Basic Principles that apply to establishing vegetation - ANSWER ✓ stabilize
slopes
manage surface and groundwater i.e. seepage
stockpile topsoil and reapply where possible
Soil Stabilization - ANSWER ✓ Erosion Control
combined with runoff management to limit or control erosion.
Basic Principles that apply to establishing vegetation - ANSWER ✓ stabilize
slopes
manage surface and groundwater i.e. seepage
stockpile topsoil and reapply where possible
Soil Stabilization - ANSWER ✓ Erosion Control
combined with runoff management to limit or control erosion.
Basic Principles that apply to establishing vegetation - ANSWER ✓ stabilize
slopes
manage surface and groundwater i.e. seepage
stockpile topsoil and reapply where possible
Soil Stabilization - ANSWER ✓ Erosion Control
combined with runoff management to limit or control erosion.
Basic Principles that apply to establishing vegetation - ANSWER ✓ stabilize
slopes
manage surface and groundwater i.e. seepage
stockpile topsoil and reapply where possible
Soil Stabilization - ANSWER ✓ Erosion Control
combined with runoff management to limit or control erosion.
, Basic Principles that apply to establishing vegetation - ANSWER ✓ stabilize
slopes
manage surface and groundwater i.e. seepage
stockpile topsoil and reapply where possible
Soil Stabilization - ANSWER ✓ Erosion Control
combined with runoff management to limit or control erosion.
Basic Principles that apply to establishing vegetation - ANSWER ✓ Stabilize
slopes
Manage surface and groundwater
Stockpile topsoil
Retain natural vegetation
Utilize suitable species
Prepare an adequate seed bed
Apply soil amendments as needed
Mulching - ANSWER ✓ application of plant residues or suitable materials to the
surface. Mulching helps to conserve moisture and modify surface temperature
fluctuations, prevent surface compaction or crusting, reduce runoff and erosion,
control weeds and help establish plant cover on soils subject to erosion.
Biotechnical slope protection advantages - ANSWER ✓ usually less expensive
than structural
no specialized installation skills
typically no heavy equipment needed
environmentally compatible
natural aesthetic appearance
provide wildlife habitat and cover
PLS - ANSWER ✓ Pure Live Seed
PLS = germination % x purity / 100
Accretion - ANSWER ✓ outward growth of bank or shore by sedimentation.
increase of extension of boundaries of land by action of natural forces
, aggradation - ANSWER ✓ general and progressive raising of a stream bed by
deposition of sediment. Modification of the earths surface in the direction of
uniformity of grade or slope by deposition as in a river bed.
aggressive - ANSWER ✓ refers to the corrosive properties of soil and water
alluvial - ANSWER ✓ deposits of silts, sands, gravels and similar detrital
material that have been transported by running water
arroyo - ANSWER ✓ waterway of an ephemeral stream deeply carved in rock or
ancient alluvium
avulsion - ANSWER ✓ a forcible separation, the sudden removal of land from the
estate of one person to that of another, shift in channel location
backing layer - ANSWER ✓ layer of graded rock between rock riprap and
underlying engineering fabric or filter layer to prevent extrusion of the soil or filter
layer material through the riprap
block - ANSWER ✓ precast prismatic unit for riprap structure
boil - ANSWER ✓ turbulent break in a water surface by upwelling
boom - ANSWER ✓ floating log or similar element designed to dampen surface
waves or control movement of drift
bore - ANSWER ✓ transient solitary wave in a narrow or convergine channel
advancing with a steep turbulent front, product of flash floods or incoming tides
boulder - ANSWER ✓ larges rock transported by a stream or rolled in the surf
bulking - ANSWER ✓ increase in volume of flow due to air entrainment, debris,
bedload or suspended sediment
camber - ANSWER ✓ upward adjustment of the profile of a drainage facility
under a heavy loading (usually a high embankment) and poor soil conditions, so
that as the drainage facility settles it approaches the design profile
CORRECT SOLUTIONS||100%
GUARANTEED PASS||A+
GRADED||UPDATED 2026/2027
SYLLABUS||<<NEWEST VERSION>>
Surface Runoff Predictions - ANSWER ✓ Runoff volume
Peak rate of discharge
isoheytal map - ANSWER ✓ rainfall amounts provided through meteorological
records
maps provide 2 to 100 year frequency, 24 duration storms most of the US
Storm Types - ANSWER ✓ USDA categorized storm events into 4 types based
on rainfall
Divert Runoff (Diversions) - ANSWER ✓ Earth Dike
Perimeter Dike
Water Bars
Check Dams
Temporary Swales
Convey Runoff (Waterways) - ANSWER ✓ Concrete lined channels
Rock lined waterways
Grassed waterway
Grade stabilization structure
slope drains
Stabilize Outlet - ANSWER ✓ Rock outlet protection
level spreader
paved flume
Soil Stabilization - ANSWER ✓ Erosion Control
,combined with runoff management to limit or control erosion.
Basic Principles that apply to establishing vegetation - ANSWER ✓ stabilize
slopes
manage surface and groundwater i.e. seepage
stockpile topsoil and reapply where possible
Soil Stabilization - ANSWER ✓ Erosion Control
combined with runoff management to limit or control erosion.
Basic Principles that apply to establishing vegetation - ANSWER ✓ stabilize
slopes
manage surface and groundwater i.e. seepage
stockpile topsoil and reapply where possible
Soil Stabilization - ANSWER ✓ Erosion Control
combined with runoff management to limit or control erosion.
Basic Principles that apply to establishing vegetation - ANSWER ✓ stabilize
slopes
manage surface and groundwater i.e. seepage
stockpile topsoil and reapply where possible
Soil Stabilization - ANSWER ✓ Erosion Control
combined with runoff management to limit or control erosion.
Basic Principles that apply to establishing vegetation - ANSWER ✓ stabilize
slopes
manage surface and groundwater i.e. seepage
stockpile topsoil and reapply where possible
Soil Stabilization - ANSWER ✓ Erosion Control
combined with runoff management to limit or control erosion.
, Basic Principles that apply to establishing vegetation - ANSWER ✓ stabilize
slopes
manage surface and groundwater i.e. seepage
stockpile topsoil and reapply where possible
Soil Stabilization - ANSWER ✓ Erosion Control
combined with runoff management to limit or control erosion.
Basic Principles that apply to establishing vegetation - ANSWER ✓ Stabilize
slopes
Manage surface and groundwater
Stockpile topsoil
Retain natural vegetation
Utilize suitable species
Prepare an adequate seed bed
Apply soil amendments as needed
Mulching - ANSWER ✓ application of plant residues or suitable materials to the
surface. Mulching helps to conserve moisture and modify surface temperature
fluctuations, prevent surface compaction or crusting, reduce runoff and erosion,
control weeds and help establish plant cover on soils subject to erosion.
Biotechnical slope protection advantages - ANSWER ✓ usually less expensive
than structural
no specialized installation skills
typically no heavy equipment needed
environmentally compatible
natural aesthetic appearance
provide wildlife habitat and cover
PLS - ANSWER ✓ Pure Live Seed
PLS = germination % x purity / 100
Accretion - ANSWER ✓ outward growth of bank or shore by sedimentation.
increase of extension of boundaries of land by action of natural forces
, aggradation - ANSWER ✓ general and progressive raising of a stream bed by
deposition of sediment. Modification of the earths surface in the direction of
uniformity of grade or slope by deposition as in a river bed.
aggressive - ANSWER ✓ refers to the corrosive properties of soil and water
alluvial - ANSWER ✓ deposits of silts, sands, gravels and similar detrital
material that have been transported by running water
arroyo - ANSWER ✓ waterway of an ephemeral stream deeply carved in rock or
ancient alluvium
avulsion - ANSWER ✓ a forcible separation, the sudden removal of land from the
estate of one person to that of another, shift in channel location
backing layer - ANSWER ✓ layer of graded rock between rock riprap and
underlying engineering fabric or filter layer to prevent extrusion of the soil or filter
layer material through the riprap
block - ANSWER ✓ precast prismatic unit for riprap structure
boil - ANSWER ✓ turbulent break in a water surface by upwelling
boom - ANSWER ✓ floating log or similar element designed to dampen surface
waves or control movement of drift
bore - ANSWER ✓ transient solitary wave in a narrow or convergine channel
advancing with a steep turbulent front, product of flash floods or incoming tides
boulder - ANSWER ✓ larges rock transported by a stream or rolled in the surf
bulking - ANSWER ✓ increase in volume of flow due to air entrainment, debris,
bedload or suspended sediment
camber - ANSWER ✓ upward adjustment of the profile of a drainage facility
under a heavy loading (usually a high embankment) and poor soil conditions, so
that as the drainage facility settles it approaches the design profile
