gis based watershed delineation and derivation of unit hydrograph from giuh analysis

8/18/2019 GIS BASED WATERSHED DELINEATION AND DERIVATION OF UNIT HYDROGRAPH FROM GIUH ANALYSIS

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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

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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

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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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STUDY AREA


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DATA RE.UIRED

• 7O. OBO7HEE

• +EM (3;M 0E7OLU.O)

• WATER ATLAS

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33

DELINEATION OF

KRUMALI WATERSHED


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Cataog spatia anayti# too s hydroogy

1

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3'

Cataog spatia anayti# toos hydroogy $o!dire#tion

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3

Cataog spatia anayti# toos hydroogy $o!a##umuation

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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#

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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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WO07 O FE +OE

• R&%#"( %"&%a"a(i#'

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THANK YOU

gis based watershed delineation and derivation of unit hydrograph from giuh analysis

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