Hydrologic Engineering

Health of the plants can be evaluated by
rate of transpiration
Rate of condensation
Rate of evaporation
none of the answers
Precipitation is measured in
None of the answers
mass units
Depth units
Flow units
Mass Balance can indicated by
Change in storage =inflows
change in storage = outflows
None of the answers
change in storage = inflows outflows
Transpiration is
loss of water from soil
loss of water from plants
evaporation from water bodies
none of the answers
According to Horton's stream classification, If two streams of orders "i" and "j ", join and if 3 of 8 8/28/2023, 8:22 PM the value of "j" < "i" then the stream after the confluence of these two streams will have an order of :
I
None of the answers
i+1
j
The order of the stream leaving the outlet of the watershed according to Horton's stream classification is :
1
2
3
4
In general as the HUC number increases, then
Watershed size increases
watershed size does not change
None of the answers
watershed size decreases
Hyetograph is a plot of
Volume and time
time and flow
none of the answers
time and rainfall depth or intensity
Watershed delineation requires
none of the answers
topographic information
soils information
Slope of the river
Watershed delineation can be done using
DEM (Digitial Elevation Model) data
Streamflow information
boundary of watershed
None of the answers
One of the storm systems generate rainfall in South Florida during June to August
None of the answers
winter storms
orographic storms
Convective storms
The order of the watershed basin on Horton's stream classification is:
2
4
1
3
According to Horton's stream classification, If two streams of orders "i" and "j ", join and if the value of "j" < "i" then the stream after the confluence of these two streams will have an order of :
J
none of the answers
i+1
I
The "R" variable in the radar rainfall estimation equation Z= a R^b refers to:
Rainfall rate
reflectivity
None of the answers
rainfall depth
A heytograph shows three intensities in three consecutive time three two hour time intervals. The intensities are: 0.5 in/hr; 0.3 in/hr and 0.2 in/hr The total depth of precipitation is:
1.5 inches
2 inches
None of the answers
1.0 inch
A weather radar provides :
temperature estimates
observed values of precipitation
Estimates of precipitation
None of the answers
Which agency is primarily responsible for collecting soils data ?
None of the answers
USGS
NOAA
USDA
The "R" in the standard equation used for radar estimate of precipitation : Z = a R is :
Rainfall depth (mm)
Rainfall rate (mm/hr)
None of the answers
Rainfall depth (inches)
Weather surveillance radar instrument is stored in enclosure referred to as:
electromagnetic box
Radome
none of the answers
antenna
Cyclonic systems (Hurricanes, typhoons) are also
convective systems
Orographic rain causing systems
None of the answers
Frontal systems
The agency primarily responsible for collection of soils data in the U.S. is :
USDA
NOAA
USGS
none of the answers
Watershed is also referred to as:
None of the answers
Catchment
drainage divide
outlet
The national weather service (NWS) part of NOAA provides reflectivity in these units:
None of the answers
Z* 10
log10 Z
DBZ or decibels of Z
Evaporation increases with
increase in humidity
decrease in humidity
None of the answers
Decrease in wind speed
The HUC number of a watershed is : 089102. It is a ________________ watershed
8 digit
5 digit
None of the answers
6 digit
Horton stream classification is used in :
None of the answers
for HUC number identification
Disaggregation approach for definition of watersheds
Aggregation approach for definition of watersheds
Time= 1 day. If the initial storage is zero and final storage is V (ft). The inflow and outflow volumes in the lake are equal to F (ft). Precipitation over the lake with an area of A ft is P ft. The lake has no seepage and evaporation and transpiration (FT) volume is E ft What is the change in storage () ?
(P*A) - ET
V-2F
None of the answers
V+ET
The approach used by USGS for classifying watersheds is
Horton's approach
None of the answers
aggregation approach
Disaggregation approach
Find the volume of water, if a hydrograph is noted in the form of perfect triangle with base of 4 hours and maximum discharge of 10 ft/hr that occurs at 2 hours.
20 cfs
none of the answers
80 cfs
10 cfs
According to Horton’s stream classification: When two streams of order “i” join; what is the order of downstream stream formed after the confluence of these two streams?
i+i
I
i+1
none of the above answers
A hyetograph provides
volume of water
None of the answers
Precipitaiton intensity* depth of precipitation
Flow rate
Which watershed has largest area among the below watersheds with HUC numbers: Watershed # 1 : HUC 0602, Watershed # 2 : HUC 06021567, Watershed # 3 HUC 062021
Watershed # 1
Watershed 3
None of the answers
Watershed # 2
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