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`
WELCOME
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GIS BASED WATERSHED
DELINEATION AND DERIVATION
OF UNIT HYDROGRAPH FROM
GIUH ANALYSIS
FINAL REVIEW
2
PROJECT CO-ORDINATOR :Ms ANJU RAJAN
PROJECT GUIDE :Ms. ANJU RAJAN
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GROUP MEMBERS
o ANJALY T M
o ASWATHY K L
o SREEYA MENON
o SUKANYA VASU
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CONTENT
• INTRODUCTION
• RELEVANCE
• OBJECTIVES
• METHODOLOGY
• LITERATURE REVIEW
• SOFTWARE STUDY
• WATERSHED DELINEATION
•
ESTIMATION OF PARAMETERS• COMPUTATION OF UH
• CONCLUSION
• WORK SCHEDULE
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INTRODUCTION
• Unit Hydrograph (UH) is the most popuar and !idey used method "orpredi#ting $ood hydrograph resuting "rom a %no!n storm in a &asin area
• A UH is a h!"#$"a%h "&%"&s&'(i'$ )*+ #, "'#,, ,"#+ "ai',a #, s#+& 'i( !"a(i#' a'!
s%&*i,i* a"&a !is("i/(i#'.
• GIUH is a &,,&*(i0& +&(h#! ,#" (h& !&"i0a(i#' #, UH.
• Wa(&"sh&! %a"a+&(&"s a"& /asi* 'i( 1hi*h a"& &ss&'(ia ,#" (h& *a*a(i#' #, GIUH +&(h#!.
• Wa(&"sh&!s a"& 'a("a h!"##$i*a 'i(s (ha( *#0&" a s%&*i,i* a&"ia &2%a's& #, a'! s",a*&,"#+ 1hi*h (h& "'#,, ,#1s (# a !&,i'&! !"ai' a( a' %a"(i*a" %#i'(.
• A"*GIS s#,(1a"& is a' &,,&*(i0& (## (ha( *a' /& s&! ,#" 1a(&"sh&! !&i'&a(i#' a'!
&s(i+a(i#' #, %a"a+&(&"s '
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LITERATURE REVIEWS
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JOURNAL AUTHOR AIM DATA RESULT
3.Es(i+a(i#'#,G+#"%h##$Pa"a+&(&"s,#" S+aCa(*h+&'(
si'$ GIS
Sha$,(aa4/a"i5Ka"(hi45V&'4a(&sh5Ra( a'!S#'a+T#/$a
a'! Ki'&P&'6#"
T#!&i'&a(& (h&s(! a"&aa'! $&'&"a(&s("&a+'&(1#"4
T#*#+%a"&(&+%#"a0a"ia(i#'$+#"%h##
$i*a %a"a+&(&"s
DEM
T#%#sh&&(
G+#"%h##$i*a
%a"a+&(&"s1h&"&&s(i+a(&!
Us&! (#
s(i+a(&h!"##$i*a"&s%#'s& #,(h&*a(*h+&'(
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JOURNAL AUTHOR AIM DATA RESULT
7.D&(&"+i'a(i#' #,1a(&"sh&!8sh!"##$i*a
%a"a+&(&"ssi'$ "&+#(&s&'si'$ a'!
$$"a%hi*ai',#"+a(i#'ss(&+ 9GIS(&*h'i;&s:Cas& s(!
#, Wa!i A-4a'$a"5S!a'M.
M. Y.M#ha+&!5H. S. M.Hi+i a'!E. S.Ga'a1a
T#i+%&+&'('&1 s#'!(&*h'##$i&ss*h as"&+#(&s&'si'$5 GIS
a'! $#/a %#si(i#'i'$ss(&+ 9GPS
T#
!&(&"+i'& (h&h!"##$i*a
%a"a+&(&"s.
DEM
GPS
R&+#(&s&'si'$
Th&i',#"+a(i#'#/(ai'&! 1#!
/& s&, i' si(&s&&*(i#' a'!!&si$'i'$ #,1a(&" ha"0&s(i'$
%"#6&*( 1i(h+i'i++ *#s(5&,,#"(s a'! (i+&*#+%a"&! (# (h&("a!i(i#'a
+&(h#!s i'a!!i(i#' (#$i0i'$ a'a**"a(&"&s(s
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JOURNAL AUTHOR AIM DATA RESULTS
C#+%a"is#' /&(1&&'
*ha"a*(&"is(i*s #,$+#"%h#*i+a(i*IUH
%"#!*&!si'$$*ihBas&!*a"4+#!& a'!*a"4 ih+#!&
A"asha!i/5
+&sa+saa"i6a
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JOURNAL AUTHOR AIM DATA RESULTS
A s%a(ia0a"i&! 'i(h!"#$"a%h+#!&
M. H/aia61a"!5+
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RELEVENCE
• T# s(! 1a(&"sh&! /&ha0i#"
• Us&! ,#" h!"##$i*a a'asis s*h as "'#,,
*a*a(i#' a'! ,##! &s(i+a(i#'
• F#" %"#%#si'$ h!"##$i*a s("*("&s
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OBJECTIVES
• T# !&i'&a(& a 1a(&"sh&! si'$ A"*GIS
• T# &s(i+a(& 1a(&"sh&! %a"a+&(&"s
• T# *#+%(& 'i( h!"#$"a%h ,#" (h& /asi' si'$
GIUH +&(h#!
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METHODOLOGY
• Fa+iia"i
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ArcGIS 10
>A ss(&+ ,#" *a%("i'$ 5 s(#"i'$ 5 *h&*4i'$
i'(&$"a(i'$ 5 +a'i%a(i'$5 a'a
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SPATIAL AND ATTRIBUTE DATA
• Spata! "ata (where)
– s%&*i,i&s #*a(i#'
– s(#"&! i' a sha%& ,i&5 $!a(a/as& #" si+ia" $$"a%hi*,i&
• Attr#$t% "ata (what, how much, when)
– s%&*i,i&s *ha"a*(&"is(i*s a( (ha( #*a(i#'5 'a("a #" h+a'-*"&a(&!
– s(#"&! i' a !a(a /as& (a/&
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WATERSHED DELINEATION
1*
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,i$ ) :Wa(&"sh&! !&i'&a(i#' 1
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DEM "ata
A !i$i(a &&0a(i#' +#!& 9DEM is a !i$i(a +#!& #" 3D "&%"&s&'(a(i#' #,
a (&""ai'@s s",a*& *#++#' ,#" a %a'&( 9i'*!i'$ Ea"(h5 +##'5 #"
as(&"#i! *"&a(&! ,"#+ (&""ai' &&0a(i#' !a(a
G%&r%'%r%(c()
G"&,&"&'*i'$ is (h& %"#*&ss #, assi$'i'$ a "as(&" i+a$& (ha( *a'"&%"&s&'( a +a% #" sa(&i(& i+a$& *##"!i'a(&s a'! s%a(ia #*a(i#'.
T"a's,#"+ (h& +a% i+a$& (# "&a-1#"! *##"!i'a(&s
1*
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TOOLS USED FOR DELINEATION
Filling - conditioning of the raster DEM or filling of
sinks in a raster to remove small imperfections.
Flow direction- a process to create a raster flowdirection from each cell to its steepest !#1's#%&
'&i$h/#".
Flow accumulation- a process to create a raster of
accumulated flow to each cell
2;
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Watershed Pour Points: In rc !atalog we will create a
new empt" shape file to store the new pour point.
watershed : In this final step, we select the flow direction
grid as the input flow direction raster, and the rasterversion of the pour point as the input pour point data.
#inall", we select an output raster pathname. $he new
watershed raster will %e added to the map.
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ELONGATION RATIO
=.7 /∗(
• Wh&"&5 L/ is (h& &'$(h #, (h& /asi'5 A is a"&a #, (h& /asi' i' s;.
4+.
AREA RATIO
RA Ai) Ai
• Ai is (h& +&a' a"&a #, (h& *#'("i/(i'$ 1a(&"sh&! (# s("&a+s #,
#"!&" i
FORM FACTOR
F#"+ ,a*(#" AL
• Wh&"& A is (h& a"&a #, 1a(&"sh&! L is (h& a2ia &'$(h #,
1a(&"sh&!
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COMPACTNESS COEFFICIENT
• C#+%a*('&ss *#&,,i*i&'( P993.)A=.7
Wh&"& P is (h& 1a(&"sh&! %&"i+&(&" A is (h& a"&a #, (h& 1a(&"sh&!
DRY DENISITY
• Th& "a(i# #, (h& (#(a &'$(h #, a (h& s("&a+s 1i(h i' a
1a(&"sh&! (# (h& 1a(&"sh&! a"&a.
D! LUA
2'
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• Hi s#%& 0&#*i(i&ss("&a+ ,#1 0&#*i(i&s
< =o>LO
L#)D
L# a0&"a$& ,#1 &'$(h
D D"ai'a$& !&'si(
• Th& 0a& #, ("a0& (i+& %a"a+&(&" 1hi*h 0a"i&s
,"#+ s("&a+ (# s("&a+ is $i0&' /
VsLi
Vs is (h& s("&a+ 0&#*i(
Li is (h& +&a' &'$(h #, s("&a+ #, #"!&" i2
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I(ta! Stat% Pra#!t%-
2?
Th& i'i(ia s(a(& %"#/a/ii( a**#'(s ,#" a "ai' !"#% ,ai'$ #' a'
hi s#%& a"&as5 '&$&*(i'$ "ai',as #' (h& *ha''& '&(1#"45 i'
*a(*h+&'( #, a $i0&' #"!&".
T t ! St t P # #!t
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2
Tra(-t&(a! Stat% Pra#!t%-.
Th& ("a'si(i#' %"#/a/ii( a**#'(s ,#" (h& *ha'$i'$ s(a(& #, a !"#%
,"#+ #1&" #"!&" s("&a+ (# (h& hi$h&" #"!&" s("&a+.
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2*
PATH PROBABILITIES
Pa(h %"#/a/ii( is !&,i'&! as (h& %"#/a/ii( #, a !"#% 1hi*h
1i ("a0& a %#ssi/& %a(hs si (# (h& #(&(.
he tota num&er o" possi&e paths
N )
P9si i.Pi6.P 64 .P4
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3;
Hen#e the .UH ordinates #an &e
determined &y the e@uationA
IUH , SiPi
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31
STUDY AREA
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DATA RE.UIRED
• 7O. OBO7HEE
• +EM (3;M 0E7OLU.O)
• WATER ATLAS
32
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33
DELINEATION OF
KRUMALI WATERSHED
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34
Cataog spatia anayti# too s hydroogy
1
28
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3'
Cataog spatia anayti# toos hydroogy $o!dire#tion
29
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3
Cataog spatia anayti# toos hydroogy $o!a##umuation
30
Cataog spatia anayti# too hydroogy
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3?
g p y y gystream net!or%
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3
Cataog 7patia anayti# toos HydroogyWatershed
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KURUMALI WATERSHED
D%!(%at%" $-() Arc /ap O#ta(%" 'r&/ at%r at!a-
3*
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4;
O(&( is #*a(&! a( #)8=.?E )=#38)=.?N '&a" 4"+ai (&+%&.
Th& +a6#" a"&as *#0&"&! (h& 1a(&"sh&! a"& 4#!a4a"a 5 *haa44!i 5
i"i'6aa44!a 5#44a"a.4"+ai5'a'!i44a"a5+aa
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ESTIMATION OF WATERSHED
PARAMETERS
O"!&" #, (h& s("&a+
N+/&" #, (h& s("&a+s i' &a*h #"!&"
Bi,"*a(i#' "a(i#
L&'$(h #, s("&a+ L&'$(h "a(i#
A"&a #, (h& /asi'
P&"i+&(&" #, (h& /asi'
E#'$a(i#' "a(i# F#"+ ,a*(#"
C#+%a*('&ss *#&,,i*i&'(
Ci"*a"i( "a(i#
41
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42
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43A(("i/(& (a/& #, s("&a+ #"!&" ,&a("& *ass
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N$/#%r &' -tr%a/- ( %ac &r"%r
44
N# #, s("&a+s #, #"!&" ) )3
N# #, s("&a+s #, #"!&" 3
N# #, s("&a+s #, #"!&" 3
N# #, s("&a+s #, #"!&"
N# #, s("&a+s #, #"!&" 7 )
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BIFURCATION RATIO
4'
ORDER BIFURCATION
RATIO 9R/MEAN
) .=
3.7
.7=
3 .===
.===
7
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LENGTH RATIO
4
ORDER
OF
STREAM
NO OFSTREAM
TOTALLENGTH
MEANLENGTH
LENGTHRATIO
MEAN
LENGTH
RATIO
) )3 )).7) ).73)7 ).=)
.)=
3 .7=3 .73)7 ).3
3 33.)7 .)7)=3 3.3)
.73) )3.3) ).
7 ) =.337)3 =.337)3
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4?
AREA OF THE BASIN 4226443
PERIMETER OF THE BASIN )).)
ELONGATION RATIO =.
FORM FACTOR =.=
COMPACTNESS
COEFFICIENT).3
CIRCULARITY RATIO =.=)
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AREA RATIO
4
A) .37
A .3=
A3 .3
A .3
A0&"a$& .3
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4*
INITIAL PROBABILITY
) =.3
=.)
3 =.)
=.)=
7 =.=
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';
TRANSITION PARAMETERS
P) =.)
P)3 =.))3
P) =.=)
P)7 =.=
P3 =.
P =.)
P7 =.=
P3 =.)
P37 =.)
P7 )
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'1
PROBABILITY OF EACH PATH
Pa(h N+/&" Pa(h !&s*"i%(i#' P"#/a/ii(
) a)Q")Q"Q"3Q"Q "7Q#(&( =.)
a)Q")Q"Q"3Q "7Q#(&( =.=3 a)Q")Q"Q"Q "7Q#(&( =.=3
a)Q")Q"3Q"Q "7Q#(&( =.=3
7 a)Q")Q"Q "7Q#(&( =.=3
a)Q")Q"Q "7Q#(&( =.=
a)Q")Q"3Q "7Q#(&( =.== a)Q")Q "7Q#(&( =.=)
aQ"Q"3Q"Q "7Q#(&( =.))
)= aQ"Q"Q "7Q#(&( =.=
)) aQ"Q"3Q "7Q#(&( =.=
) aQ"Q "7Q#(&( =.=)
)3 a3Q"3Q"Q "7Q#(&( =.)73
) a3Q"3Q "7Q#(&( =.=3
)7 aQ"Q "7Q#(&( =.))
) a7Q "7Q#(&( =.=
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'2
TRAVEL TIME PARAMETERS
S("&a+ 0&#*i( Vs =.7
O0&"a'! ,#1 0&#*i( V =.
=.3)
) =.)7
=.3
3 =.)7
=.=3
7 =.=
COMPUTATION OF UH AND S HYDROGRAPH@
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'3
( IUH ) h" UH S HYDROGRAPH
= 3.E-=7 =.== =.==
) =.=== =.37)=3 =.)73)
=.==))7)7 ).=))) .77)
3 =.==)7) .=)33 .3
=.=== .7=3 ).=7)7
7 =.===== 3.) 3.7))))
=.==33) 3.) 37.37)
=.==3)7) .3=)3) .3=
=.== 7.=7=) .)=3 =.===) 7.77)33 7.37
)= =.==73 .)37) )=.3)73
)) =.==7)= .7==)7) )3=.)7)7
) =.===)=7 .)3) )77.7
)3 =.==7 .=) )3.3))
) =.==7 .== ).737=)
)7 =.==)) .7)7) .)3737
) =.==))77 .3))7 .3=7))
) =.==7)7 .33=)3 3).)=73
) =.==7 .==) 3.3
) =.==7= )=.=7)7 3.7=7)7
= =.==7=) )=.37 .)77=7
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'4
; 1;; 2;; 3;;;
2
4
1;
12
14
1 hr UH
1 hr UH
TIME in secn!s
DIS"HAR#E in $3%s
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''
; 1;; 2;; 3;; 4;;;
';;
1;;;
1';;
2;;;
2';;
3;;;
3';;
4;;;4';;
';;;
S H&DRO#RA'H
7 H+0O-0/BH
TIME in secn!s
DIS"HA#E in $3%s
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COCLU7.O• Wa(&"sh&! is !&i'&a(&! si'$ A"*GIS
• 4"+ai s/1a(&"sh&! is #/(ai'&! as 7(h #"!&"
• A"&a #, /asi' is #/(ai'&! as .3 +
• G+#"%h##$i*a %a"a+&(&"s s*h as /i,"*a(i#' "a(i#5 a"&a "a(i# 5
&'$(h "a(i# &(* a"& #/(ai'&!
• A"*GIS is #'& #, (h& +#s( &asi&s( a'! &,,&*(i0& s#,(1a"& ,#"
!&i'&a(i#' a'! %a"a+&(&" &s(i+a(i#'
• UH 1as !&"i0&! si'$ GIUH +&(h#!
• GIUH 1as ,#'! (# /& (h& +#s( &,,&*(i0& +&(h#! ,#" !&"i0a(i#' #,
UH &s%&*ia ,#" '$a$&! "i0&" • Usi'$ "ai',a !a(a a'! UH "'#,, *a' /& &s(i+a(&!
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WORK SCHEDULE
(OR) MONTH
STUDY AREA SELECTED AUGUST
LITERATURE REVEIW SEPTEMBER
SOFTWARE STUDY OCTOBER - DECEMBER
WATERSHED DELINEATED ANDPARAMETERS ARE ESTIMATED
JANUARY FEBRUARY
UH AND S HYDROGRAPHCOMPUTED
MARCH
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8/18/2019 GIS BASED WATERSHED DELINEATION AND DERIVATION OF UNIT HYDROGRAPH FROM GIUH ANALYSIS
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WO07 O FE +OE
• R&%#"( %"&%a"a(i#'
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THANK YOU