HATDUG Flashcards

1
Q

The application of engineering and biological principles to the
solution of soil and water management problems.

A

SWCE

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2
Q

The science that deals with hydrological problems involving the
hydrologic cycle, the water budget and the rainfall statistics of
storms.

A

Hydrometeorology

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3
Q

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

A

BOTH B AND C

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4
Q

Which of the following best illustrates the shape of the hydrograph
for a storm that passed a fan shaped watershed?

A

DI MA INSERT ANG PIC KAMO AJDUST NUMBER 4 NI LETTER C ANSWER

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5
Q

Which of the following best illustrates the shape of the hydrograph
for a storm that passed an elongated horizontal watershed?

A

NUMBER 5 - B

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6
Q

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

A

B. FREEBOARD

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7
Q

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

A

d. turnout

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8
Q

Actual height of the embankment after settlement.

a. inside height c. freeboard e. designed height
b. outside height d. finished height

A

e. designed height

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9
Q

Height of the embankment to be attained during construction

a. inside height c. freeboard e. designed height
b. outside height d. finished height

A

d. finished height

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10
Q

Downward movement of water through the soil profile or other
porous media.

a. Precipitation c. Runoff e. Infiltration
b. Condensation d. Percolation

A

d. Percolation

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11
Q

The process by which water on the ground surface enters the soil.

a. Seepage c. Runoff e. Infiltration
b. Condensation d. Percolation

A

e. Infiltration

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12
Q

Water that does not infiltrate the soil and flows on the surface.

a. Precipitation c. Runoff e. Infiltration
b. Condensation d. Percolation

A

c. Runoff

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13
Q

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

A

b. inside slope

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14
Q

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

A

b. liming

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15
Q

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

A

c. leaching

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16
Q

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

a. foresight

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17
Q

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

a. cropping pattern

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18
Q

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

a. Integrated Water Resources Management

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19
Q

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

A

b. Saltating load

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20
Q

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

a. creep distance

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21
Q

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

A

d. infiltration rate

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22
Q

Runoff includes
a. Interflow
b. Surface runoff
c. Groundwater flow
d. b & c
e. all of the above

A

E. ALL

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23
Q

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

a. > 3 ft

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24
Q

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

A

b. stilling basin

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25
Q

How many types are there in the Philippine Precipitation?
a. 1 c. 3 e. 5
b. 2 d. 4

A

d. 4

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26
Q

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

a. inverted siphons

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27
Q

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

A

b. porosity

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28
Q

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

A

b. headworks

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29
Q

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

A

c. field capacity

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30
Q

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

A

c. checks

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31
Q

The application of water in the soil to supply moisture needed for
plant growth.
a. flooding c. drainage e. diverting
b. sprinkling d. irrigation

A

d. irrigation

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32
Q

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

A

b. critical depth

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33
Q

Elevated section of open channel used for crossing natural
depressions.
a. parshall flume c. siphon e. a&b
b. flume d. elevated channel

A

b. flume

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34
Q

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

a. stage

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35
Q

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

A

b. avoid sedimentation

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36
Q

Which one is the flattest canal side slope?
a. 1:1 c. 4:1 e. 1:2
b. 1:4 d. 2:1

A

c. 4:1

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37
Q

Inside bottom or sill of the conduit.
a. invert c. inside sill e. top sill
b. inside base d. bottom sill

A

a. invert

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38
Q

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

A

b. field capacity

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39
Q

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

A

d. design depth

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40
Q

Part of the system that impounds the runoff.
a. storage c. impounding e. irrigation
b. reservoir d. runoff collector

A

b. reservoir

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41
Q

Slope at the downstream face of the embankment.
a. outside slope c. side slope e. none of the above
b. inside slope d. soil gradient

A

a. outside slope

42
Q

Vertical flow of water to carry salts contained in water.
a. leaching c. infiltration e. runoff
b. percolation d. seepage

A

a. leaching

43
Q

A kind of terrace which consists of a series of flattened areas.
a. broad-base c. bench e. conservation terrace
b. rice terrace d. flat terrace

A

c. bench

44
Q

The practice where legumes are plowed or incorporated into the soil.
a. legume manuring c. manuring e. none of the above
b. leguming d. green manuring

A

d. green manuring

45
Q

An imaginary level line that connects points of equal elevation.
a. contour c. level e. benchmark
b. datum d. interval

A

a. contour

46
Q

The phases of soil erosion.
a. Detachment, Transportation, Deposition
b. Saltation, Transportation, Deposition
c. Saltation, Detachment, Deposition
d. Detachment, Transportation, Saltation
e. None of the above

A

a. Detachment, Transportation, Deposition

47
Q

Farming practice where plowing and harrowing are done along the
contour.
a. crop row aligning
b. contour plowing
c. strip cultivation
d. contouring

A

d. contouring

48
Q

Dam which resists water flow of water by its weight.
a. resisting dam c. gravity dam e. a&c
b. buttress dam d. arc dam

A

c. gravity dam

49
Q

Runoff is mostly affected by this climatic factor.
a. Season of the year
b. Rainfall duration and intensity
c. Meteorological conditions
d. Frozen soil conditions
e. Dry soil conditions

A

b. Rainfall duration and intensity

50
Q

Dam consisting of stones enclosed in cyclone wires which allows
water passage.
a. gabion dam c. cyclone dam e. a and c
b. stone dam d. interlink dam

A

a. gabion dam

51
Q

Material used to cover the soil to minimize evapotranspiration.
a. plastic c. leaves e. a and d
b. mulch d. soil cover

A

b. mulch

52
Q

Farming practice where plowing and harrowing are done along the
contour.
a. contouring c. row aligning e. mulching
b. strip cropping d. plowing

A

a. contouring

53
Q

Philippines has a total land area of around
a. 30 M ha c. 40 M ha e. 60 M ha
b. 25 M ha d. 50 M ha

A

a. 30 M ha

54
Q

Geologic formation shaped by the dissolution of a layer or layers of
soluble bedrock, usually carbonate rocks such as limestone or
dolomite.
a. geologic layer c. karst topography e. aquifer
b. dissolved layer d. soluble layer

A

c. karst topography

55
Q

Alternate planting of different crops on successive planting seasons.
a. Contouring c. Mulching e. Zero tillage
b. Strip cropping d. Crop rotation

A

d. Crop rotation

56
Q

Alternate planting of two or more different crops along contours.
a. Contouring c. Mulching e. Zero tillage
b. Strip cropping d. Crop rotation

A

b. Strip cropping

57
Q

Placement of crop residues or other materials around the base of
plants or throughout the field.
a. Contouring c. Mulching e. Zero tillage
b. Strip cropping d. Crop rotation

A

c. Mulching

58
Q

Planting along contours or land surface with the same elevation.
a. Contouring c. Mulching e. Zero tillage
b. Strip cropping d. Crop rotation

A

a. Contouring

59
Q

A minimum tillage practice in which the crop is sown directly into
soil not tilled since the previous crop.
a. Contouring c. Mulching e. Zero tillage
b. Strip cropping d. Crop rotation

A

e. Zero tillage

60
Q

Any permeable textile material (synthetic or natural fibers) that is
used with foundation, soil, rock, earth, etc. to increase stability and
decrease wind and water erosion.
a. geosynthetic c. coconets e. all of the above
b. geotextile d. a&b

A

d. a&b

61
Q

A natural or artificial channel that shortens a meandering stream.
a. terracing c. protected waterways e. cut-off
b. diversion channels d. geotextile

A

e. cut-off

62
Q

A type of terrace which is applied for 20-30% slope and constructed
along the contours into the hill slope in a step-like formation.
a. bench terrace c. broad-based terrace e. orchard terrace
b. zing terrace d. basin terrace

A

a. bench terrace

63
Q

Flooding that occurs along a channel.
a. riverine flooding c. shallow flooding e. stream flooding
b. coastal flooding d. deep flooding

A

a. riverine flooding

64
Q

It caused by a persistent high wind and changes in air pressure which
push water toward the shore and raise the level of a large body of
water by several feet.
a. storm surge c. tsunami e. a & c
b. flashflood d. shallow flood

A

a. storm surge

65
Q

It occurs in flat areas where a lack of channels cannot drain water
away easily.
a. riverine flooding c. shallow flooding e. stream flooding
b. coastal flooding d. deep flooding

A

c. shallow flooding

66
Q

A naturally occurring material that is broken down by processes of
weathering and erosion and is subsequently transported by the
action of wind, water or by the force of gravity acting on the particle
itself.
a. soil particles c. peebles e. sediment
b. mineral d. sand

A

e. sediment

67
Q

The method for inducing, collecting, storing and conserving local
surface runoff for agriculture in arid and semi-arid regions.
a. water storing c. water diversion e. water conservation
b. water collecting d. rainwater harvesting

A

d. rainwater harvesting

68
Q

It acts as a front wall against runoff flow in the drop spillway.
a. head wall c. toe wall e. cut-off wall
b. wing wall d. side wall

A

a. head wall

69
Q

A system consisting an earth dam to trap, harvest and store rainfall
and runoff with an embankment height of less than 5 m and a pond
area of about 1500 m2
.

a. SFR c. FMR e. none of the above
b. SWIP d. SFS

A

a. SFR

70
Q

A type of landslide that occurs when runoff saturates the ground.
Soil that is drying during weather turns into a liquid solution that
slides downhill.
a. mudflow c. landslide e. none of the above
b. soil flow d. ice flow

A

a. mudflow

71
Q

It describes the drainage after it reaches a defined channel.
a. streamflow c. sheetflow e. infiltration
b. runoff d. percolation

A

a. streamflow

72
Q

It is defined as an earth fill structure built across a narrow depression
or valley to harvest and store rainfall and runoff for immediate and
multiple use. It has a height of 5 m to a maximum of 15 m and
service area of 25 ha to 150 ha.
a. SFR c. FMR e. none of the above
b. SWIP d. SFS

A

b. SWIP

73
Q

The following data are required in designing a bench terrace, except
a. average annual rainfall
b. soil type and depth
c. average slope of the area
d. crop and soil management
e. None of the above

A

e. None of the above

74
Q

With all other conditions being the same, which of the following
watershed cover has the highest peak flow rate?
a. primary forest c. farmland e. none of the above
b. grassland d. urban area

A

d. urban area

75
Q

With all other conditions being the same, which of the following
watershed cover has the lowest runoff volume?
a. primary forest c. farmland e. none of the above
b. grassland d. urban area

A

a. primary forest

76
Q

For items 76-78: Refer to the following watershed shapes.

  1. With all other conditions being the same, rank the watershed shapes
    from highest to lowest runoff volume.
    a. A-B-C c. B-A-C e. B-C-A
    b. C-B-A d. C-A-B
A

c. B-A-C

77
Q
  1. With all other conditions being the same, rank the watershed shapes
    from highest to lowest base flow rate.
    a. A-B-C c. B-A-C e. B-C-A
    b. C-B-A d. C-A-B
A

d. C-A-B

78
Q
  1. With all other conditions being the same, rank the watershed shapes
    from highest to lowest peak flow rate.
    a. A-B-C c. B-A-C e. B-C-A
    b. C-B-A d. C-A-B
A

c. B-A-C

79
Q
  1. With all other conditions being the same, which of the following
    watershed cover has the shortest (fastest) time to peak?
    a. primary forest c. farmland e. none of the above
    b. grassland d. urban area
A

d. urban area

80
Q

Spillway which is not excavated such as natural draw, saddle or
drainage way.
a. normal spillway c. natural reservoir e. none of the above
b. soil spillway d. natural spillway

A

d. natural spillway

81
Q

Vertical distance from lowest point of the ground line to the dam
crest.
a. reservoir height c. normal height e. maximum height
b. dam height d. structural height

A

b. dam height

82
Q

Vertical distance measured from the top of the dam down to the
bedrock
a. reservoir height c. normal height e. maximum height
b. dam height d. structural height

A

d. structural height

83
Q

Type of small farm reservoir where water is impounded on the
upstream side of the dam. It is suited to an area with an undulating
topography.
a. straight embankment c. dugout pond e. none of the above
b. semicircular embankment d. rectangular excavation

A

a. straight embankment

84
Q

The only design suited to flat areas. Water is stored below the
ground level and pumping is required.
a. straight embankment c. dugout pond e. none of the above
b. semicircular embankment d. rectangular excavation

A

c. dugout pond

85
Q

Water is impounded against the slope behind a semicircular
embankment.
a. straight embankment c. dugout pond e. none of the above
b. semicircular embankment d. rectangular excavation

A

b. semicircular embankment

86
Q

The application of water in the soil to supply moisture needed for
plant growth.
a. flooding c. drainage e. diverting
b. sprinkling d. irrigation

A

d. irrigation

87
Q

In PAES 610:2016-Small Farm Reservoir, the reservoir shall be
located in areas with slope ________.
a. 0%-25% c. 0%-15% e. 0%-20%
b. 10%-15% d. 10%-25%

A

c. 0%-15%

88
Q

Volume of water stored in reservoir between the minimum water
level and normal water level.
a. active storage c. specific storage e. none of the above
b. normal storage d. dead storage

A

a. active storage

89
Q

Volume below the intake structure.
a. active storage c. specific storage e. none of the above
b. normal storage d. dead storage

A

d. dead storage

90
Q

A dam component which prevents migration of small particles and
screen off fine materials that flow with seepage water and prevent
piping.
a. drainer c. screener e. a and b
b. trapper d. filter drain

A

d. filter drain

91
Q

Maximum elevation of the water surface which can be attained by
the dam or reservoir without flow in the spillway.
a. Maximum storage elevation
b. Normal storage elevation
c. Active storage elevation
d. Natural storage elevation
e. none of the above

A

b. Normal storage elevation

92
Q

Part of the system that impounds the runoff.
a. reservoir c. embankment e. dam
b. spillway d. watershed

A

a. reservoir

93
Q

Area which contributes runoff or drains water into the reservoir.
a. reservoir c. embankment e. dam
b. spillway d. watershed

A

d. watershed

94
Q

In PAES 609:2016-Small Water Impounding System under site
selection, the soil shall be well-graded and shall contain at least ___
clay.
a. 30% c. 20% e. 40%
b. 25% d. 35%

A

a. 30%

95
Q

The following conditions shall be avoided in locating a proposed
dam and reservoir, except
a. sink holes c. mud deposits e. none of the above
b. faults d. Karst topography

A

. none of the above

96
Q

In PAES 609:2016-Small Water Impounding System, the watershed
shall have a maximum slope of ____.
a. 10% c. 15% e. 20%
b. 12% d. 18%

A

d. 18%

97
Q

This type of soil shall be avoided in the site selection of a proposed
SFR.
a. peat soils c. saline e. all of the above
b. heavy clays d. sodic soils

A

e. all of the above

98
Q

A definite point on an object of known elevation which serves as
reference for leveling work.
a. contour c. level e. benchmark
b. datum d. interval

A

e. benchmark

99
Q

For items 99-100: Refer to the following wind directions during storm..

  1. With all other conditions being the same, rank them from highest to
    lowest runoff volume.
    a. A-B-C c. B-A-C e. B-C-A
    b. C-B-A d. C-A-B
A

b. C-B-A

100
Q
  1. With all other conditions being the same, rank them from highest to
    lowest base flow rate.
    a. A-B-C c. B-A-C e. B-C-A
    b. C-B-A d. C-A-B
A

a. A-B-C