HATDUG Flashcards
The application of engineering and biological principles to the
solution of soil and water management problems.
SWCE
The science that deals with hydrological problems involving the
hydrologic cycle, the water budget and the rainfall statistics of
storms.
Hydrometeorology
It is the circulation of water from the ocean, through the atmosphere
back to the ocean, or to the land and thence to the ocean again by
overland and subterranean routes.
a. Water Balance c. Water Cycle e. All of the above
b. Hydrologic Cycle d. Both b and c
BOTH B AND C
Which of the following best illustrates the shape of the hydrograph
for a storm that passed a fan shaped watershed?
DI MA INSERT ANG PIC KAMO AJDUST NUMBER 4 NI LETTER C ANSWER
Which of the following best illustrates the shape of the hydrograph
for a storm that passed an elongated horizontal watershed?
NUMBER 5 - B
Additional height of the dam provided as a safety factor to prevent
overtopping by wave action or other causes.
a. dike height c. side slope e. wall
b. freeboard d. fetch
B. FREEBOARD
A structure that serves as an outlet of irrigation water into the main
farm ditch or service.
a. offtake c. cross regulator e. alley
b. flow divisor d. turnout
d. turnout
Actual height of the embankment after settlement.
a. inside height c. freeboard e. designed height
b. outside height d. finished height
e. designed height
Height of the embankment to be attained during construction
a. inside height c. freeboard e. designed height
b. outside height d. finished height
d. finished height
Downward movement of water through the soil profile or other
porous media.
a. Precipitation c. Runoff e. Infiltration
b. Condensation d. Percolation
d. Percolation
The process by which water on the ground surface enters the soil.
a. Seepage c. Runoff e. Infiltration
b. Condensation d. Percolation
e. Infiltration
Water that does not infiltrate the soil and flows on the surface.
a. Precipitation c. Runoff e. Infiltration
b. Condensation d. Percolation
c. Runoff
Slope of the upstream face of the embankment.
a. outside slope c. side slope e. none of the above
b. inside slope d. soil gradient
b. inside slope
A remedial measure that can be used to address high bicarbonate
concentration in irrigation water is
a. leaching c. over-irrigation e. drainage
b. liming d. eutrophication
b. liming
Deep percolation of water beyond the root zone of plants, resulting
in loss of salts or nutrients.
a. vertical percolation c. leaching e. drainage
b. root zone percolation d. saltation
c. leaching
The level rod reading on a turning point or on some other point having an unknown elevation.
a. foresight c. level e. sidesight
b. backsight d. hindsight
a. foresight
It is an orderly sequence of planting crop in an area for a 365-day
period.
a. cropping pattern c. crop combination e. a&b
b. crop sequence d. cropping schedule
a. cropping pattern
IWRM stands for
a. Integrated Water Resources Management
b. International Water Resources Management
c. Integrated Water Resources Mapping
d. International Water Resources Mapping
e. None of the above
a. Integrated Water Resources Management
Type of sediment load along the stream characterized as sediments
that are sometimes stationary and sometimes carried by the water
along the stream.
a. Bed load c. Temporary load e. b&d
b. Saltating load d. Suspended load
b. Saltating load
The longitudinal length along the outer surface of a pipe or conduit
plus the length along antiseep collars within an earth embankment.
a. creep distance c. alley e. freeboard
b. crest d. break distance
a. creep distance
Runoff is produced when this property of the soil is exceeded.
a. percolation rate c. permeability e. both a and c
b. erodibility d. infiltration rate
d. infiltration rate
Runoff includes
a. Interflow
b. Surface runoff
c. Groundwater flow
d. b & c
e. all of the above
E. ALL
The drop spillway is constructed at the depth height of
a. > 3 ft c. > 10 ft e. none of the above
b. > 8 ft d. >12 ft
a. > 3 ft
Structure device designed to hold a pool of water to cushion the
impact and retard the flow of falling water from an overflow weir,
chute or drop.
a. sill c. apron e. alley
b. stilling basin d. pond
b. stilling basin
How many types are there in the Philippine Precipitation?
a. 1 c. 3 e. 5
b. 2 d. 4
d. 4
These are pipelines built on or near the ground surface to convey
water across wide depressions.
a. inverted siphons c. siphons e. chute
b. laterals d. flumes
a. inverted siphons
It is the ratio of the volume of voids to the total volume of the soil.
a. void volume c. bulk density e. soil density
b. porosity d. void density
b. porosity
It refers to the composite parts of the irrigation system that divert
water from natural bodies of water such as rivers, streams and lakes.
a. main canal c. diversion dam e. none of the above
b. headworks d. irrigation structures
b. headworks
The soil moisture constant describing the amount of moisture
retained by the soil against a suction pressure of 1/3 atmosphere.
a. saturation point c. field capacity e. none of the above
b. hygroscopic moisture d. permanent wilting point
c. field capacity
Distribution control structures placed across an irrigation ditch to
block the flow temporarily and to raise the upstream water level.
a. turnouts c. checks e. gabion
b. culverts d. weirs
c. checks
The application of water in the soil to supply moisture needed for
plant growth.
a. flooding c. drainage e. diverting
b. sprinkling d. irrigation
d. irrigation
Depth of water flow where the energy content is at minimum, hence,
no other backwater forces are involved.
a. minimum depth c. energy depth e. maximum depth
b. critical depth d. normal depth
b. critical depth
Elevated section of open channel used for crossing natural
depressions.
a. parshall flume c. siphon e. a&b
b. flume d. elevated channel
b. flume
Elevation of water surface in a stream with reference to a certain
datum.
a. stage c. contour e. a and b
b. surface elevation d. water elevation
a. stage
The primary purpose in limiting water flow not to go below
minimum velocity.
a. avoid percolation
b. avoid sedimentation
c. avoid critical depth
d. optimize flow
e. none of the above
b. avoid sedimentation
Which one is the flattest canal side slope?
a. 1:1 c. 4:1 e. 1:2
b. 1:4 d. 2:1
c. 4:1
Inside bottom or sill of the conduit.
a. invert c. inside sill e. top sill
b. inside base d. bottom sill
a. invert
Moisture content of the soil when gravitational water has been
removed.
a. soil capacity c. specific gravity e. none of the above
b. field capacity d. gravitational moisture
b. field capacity
Maximum elevation of the water surface which can be attained in an
open channel without reaching the freeboard.
a. normal stage c. critical depth e. Inflection point
b. maximum storage d. design depth
d. design depth
Part of the system that impounds the runoff.
a. storage c. impounding e. irrigation
b. reservoir d. runoff collector
b. reservoir