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Hydrologic Cycledescribes the continuous movement of water on,
above,
and below the surface of the Earth. Water is always changing
states between
liquid, vapor, and ice, with these processes happening in the
blink of an eye
and over millions of years.
The Water Cycle, U.S. Geological Survey (USGS) Water Science
School
http://water.usgs.gov/edu/watercycle.html(Edited: May 2016)
(Accessed last 07-02-2016)
3. The engineering approach tends to be a little more
practically based and is
looking towards fnding solutions to problems posed by water
moving (or not
moving) around the earth. In reality there are huge areas o
overlap betweenbetween the two and it is oten dicult dicult to
separate separate them,
particularly particularly when you enter into hydrological
research
RDOWICZ, Wojciech.
http!!www.studia.pwr.wroc.pl!p!mat!civil"engineering!hydrology"or"engineers.pd(#ccessed
last $uly %&').
4. Hydrology is generally related to the study of rainfall and
to water in connection to
geography and geology.
Hydraulics is more geared towards physics, the study of the
motion of liquids in
relation to disciplines such as fluid mechanics and fluids
dynamics, etc.
http://water.usgs.gov/edu/watercycle.htmlhttp://www.studia.pwr.wroc.pl/p/mat/civil_engineering/hydrology_for_engineers.pdfhttp://water.usgs.gov/edu/watercycle.htmlhttp://www.studia.pwr.wroc.pl/p/mat/civil_engineering/hydrology_for_engineers.pdf
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Some more definitions to clarify the difference between the two
words.
Hydrology is "The science which treats of water, its properties
and laws, its
distribution over the earth's surface, etc." (rom the !#$.
Hydraulics is " That department of science which deals with the
conveyance of water
or other liquids through pipes or other artificial channels, and
with the variousmechanical applications of the force e%erted by
moving liquids. !ften used in a wider
sense, corresponding to what is now e%pressed by
hydro&inetics or hydrodynamics. "
(rom the !#$ .
https!!www.uora.com!*hats+the+dierence+between+hydrology+and+
hydraulics
5. -uman to -ydrologic ycle
-uman activities that change the land cover o river basins and
are aimed atregulating the water /u0es in nature can considerably
change the hydrological cycleo the separate river basins, and even
o large regions
1ue to human activities, the natural hydrological cycle o most
river basins is
becoming more and more transormed and regimented. The main
stream /owregulation methods are construction o dams, levees,
barrages, and dikes, which
provide water accumulation, decreasing /ood /ow, and increasing
low /ow. The
ma2or eects o reservoir construction on the hydrological cycle
(e0cepting runocontrol) are an increase o evaporation and a rise o
groundwater table
3uchment, 4ev.
http!!www.biodiversity.ru!programs!ecoservices!library!unctions!water!doc!3uchment.pd(#ccessed
$uly %&')
As the worlds population continues to rise, and as standards of
livin increase, the de!and for water also increases.
It is not just a "uestion a#out the "uantit$ of water #ut also
the "ualit$. %an$ areas are e&periencin water shortaes
and increasin episodes of conta!inated water. 'o!e i!pacts are
direct ( such as water e&traction and su#se"uent
evaporation and)or lea*ae, while others are indirect such as
eutrophication and cli!ate chane +leadin to
increased evaporation. %ost chanes are neative, althouh there
are so!e e&a!ples of positive i!pacts such as
restoration of rivers and floodplains. On #alance it would
appear that the neative i!pacts outweih the positive
ones. Whether that can #e chaned re!ains to #e seen.
GEOCASES: Case Study: Human impact on the hydrological cycle
http://www.geocases2.co.uk/hydro3.htm(Accessed last July
2016)
-uman In/uences on the *ater ycle
-umans signifcantly in/uence the global water cycle, both
uantitatively and
ualitatively. oncerning uantity, humans withdraw 56 o the total
annual
renewable reshwater, and appropriate %6 o annual
evapotranspiration and 786o accessible runo. -umankind9s control o
runo is now global and we are
https://www.quora.com/Whats-the-difference-between-hydrology-and-hydraulicshttps://www.quora.com/Whats-the-difference-between-hydrology-and-hydraulicshttp://www.biodiversity.ru/programs/ecoservices/library/functions/water/doc/Kuchment.pdfhttp://www.biodiversity.ru/programs/ecoservices/library/functions/water/doc/Kuchment.pdfhttp://www.geocases2.co.uk/hydro3.htmhttps://www.quora.com/Whats-the-difference-between-hydrology-and-hydraulicshttps://www.quora.com/Whats-the-difference-between-hydrology-and-hydraulicshttp://www.biodiversity.ru/programs/ecoservices/library/functions/water/doc/Kuchment.pdfhttp://www.biodiversity.ru/programs/ecoservices/library/functions/water/doc/Kuchment.pdfhttp://www.geocases2.co.uk/hydro3.htm
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signifcant players in the hydrological cycle. :er capita use is
increasing (with betterliestyles) and population is growing. Thus
the percentage o appropriated water is
increasing. Together with spatial and temporal variations in
available water, the
conseuence is that water or all our uses is becoming scarce and
leading to awater crisis (**#: %&&;).
4ocal water cycles are also in/uenced by the way we plan our
cities *hen land ispaved, water cannot soak into the soil. It runs
o these hard suraces very rapidly,so pipes are needed to rapidly
carry the resulting large volumes o stormwater to
the nearest stream or beach. The result is that streams carry
less water or dry up
when it is not raining and /ood when it does. :ollutants on
roads and yards are also
swept into waterways (see also sustainable sanitation).
The more humans use water, the more they also in/uence water
uality
