and Answers 2026/2027 100% Pass
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Updated
Concentrated Flow - correct answer -A result of the depth of sheet flow
and irregularities in the soil surface (low spots, depressions, rocks, plant
stems, roots, etc.).
Runoff starts in tiny rills and then expands into large gullies, aquiring
more energy to detach and transport soil particles.
> water volume = > velocity and turbulence = > soil dislodged
Suspended soil particles strike and abrade the soils surface like
sandpaper, causing more soil particles to detach and mobilize, further
increasing abrasive force.
The energy of runoff is a function of? - correct answer -- Slope gradient
- Slope length
,- Volume of runoff
Water Quality Impacts of Runoff and Envronmental Implications -
correct answer -2nd most prevalent source of water quality impairment
in VA's estuaries (Agriculture is #1)
- sediment shades lower layer of waterway, killing aquatic vegetation, so
less oxygen in water creating death :(
- sediment plugs gills suffocating critters, introduces toxins into bodies
of animals
- sediment smothers reefs, oyster beds, spawning beds, etc. when it
settles
- economy hurt due to decreased commercial fishing yields
Principles of ESC - correct answer -1. Erosion Control
2. Sediment Control
,ORDER IS RELEVANT
1st Line of Defense - correct answer -Vegetative Eroision Control
- inexpesive
- easy to install
2nd Line of Defense - correct answer -Structural Sediment Control
- expensive
- Requires Maintenance
Contour Line - correct answer -a line on a map connecting points on a
land surface that are the same elevation above sea level
Contour Interval - correct answer -the interval between contour lines on
a map or the altitude the interval represents
, contour lines close together = small contour interval = steep slope
contour lines further apart = large contour interval = not as steep
Cut and Fill - correct answer -the excavating of material in one place and
the depositing of it nearby
if a contour map runs R to L, an existing line (dashed) to the left of the
proposed line (solid) represents a cut; an existing line to the right of the
proposed line represents a fill
Drainage - correct answer -always flows perpendicular to contour lines
Valleys and Swales - correct answer -a long low area of land, often with
a drainage way, river or stream running through it, which is surrounded
by higher ground
represented by contours that point towards higher numbers