common runoff

7/29/2019 Common Runoff

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Type of Drainage Area Runoff Coefficient C

Business Districts

1) Downtown areas 0.7 0.952) Neighbornhood 0.5 0.7

Residential

1) Single family areas 0.3 0.5

2) Multi - units, detached 0.4 0.6

3) Multi - units, attached 0.6 0.75

4) Suburban/Semi - rural 0.25 0.4

5) Apartment dwelling areas 0.5 0.7

Industrial

1) Light industry 0.5 0.8

2) Heavy industry 0.6 0.9

Parks, cemeteries, woodlands 0.1 0.25

Playgrounds 0.2 0.35

Railroad yard areas 0.2 0.4

Unimproved areas 0.1 0.3

Streets

1) Asphalt 0.7 0.95

2) Concrete 0.8 0.953) Bricks/Stone 0.7 0.85

4) Driveways & Walks 0.7 0.85

Roofs 0.75 0.95

Lawns and open areas

1) Sandy soil, flat 2% 0.05 0.1

2) Sandy soil, avg. 2%- 7% 0.1 0.15

3) Sandy soil, steep,7%+ 0.15 0.2

4) Sandy soil, flat 2% 0.13 0.17

5) Sandy soil, avg 2%-7% 0.18 0.22

6) Sandy soil, steep 2% 7% 0.25 0.35

Common Runoff Coefficient For Use with the Rational Formula

( Q= CIA/360)


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Scale=

1:25000

Name Area mark

Length of

drain m

Length of

sub drains Area mm2

Area m2

as per

scale

Area ,

hectare

m m

Kazi ka

nallah A1 411.43 257143.8 25.71438

A2 1100 663.68 414800 41.48

A3 3500 4935.09 3084431 308.4431

A4 3000 3270.17 2043856 204.3856

A5 1600 1480.11 925068.8 92.50688

2445

Total 672.53

Vaishali

Nagar

diversion

channel B 383 1500 1937.23 1210769 121.0769

121.0769

Anted Nallah C 1217.03 760643.8 76.06438

total 76.06438

Christian

ganj Nallah D 609.55 380968.8 38.09688

Bandi Nadi E1 1943.495 1214684 121.4684

E2 2813.414 1758384 175.8384

Calculation for Runoff


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E3 2333.672 1458545 145.8545

E4 2304.763 1440477 144.0477

E5 3309.54 2068463 206.8463

E6 1817.09 1135681 113.5681

E7 2476.9 1548063 154.8063

E8 2469.98 1543738 154.3738

E9 6184.447 3865279 386.5279

E10 1227.84 767400 76.74

total 1680.071

Mahaveer

colony

Nallah F 950 1800 1407.87 879918.8 87.99188

Masuda Nadi G 2952.832 1845520 184.552

Ganj Nallah H 1450 100 1644 1027500 102.75

Kutchery

Road Nallah I 1066 666250 66.625

Inder kot

Nallah J 2508 1567500 156.75

Cloak tower

to Monia

Islamia K 701.07 438168.8 43.81688

Chorsiawas

Drain L1 1949.97 1218731 121.8731

L2 2002.1 1251313 125.1313


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1949.97 1218731 121.8731

Green belt, Fforest/open, steep slope 2002.1 1251313 125.1313

L3 Forest/Open, steep slope 3452.57 2157856 215.7856

Education

Institution,

Semi urban Nosar 3053.17 1908231 190.8231

Kotra Drain 1038.85 649281.3 64.92813

high densit 718.5413

Area mark Area mm2 Length of su Mahaveer c Area , hect Scale= 1:2 category

Dairy,

paultry

form,Unimpr

oved areas N 4032.75 2520469 252.0469

Over flow of

Kazi drain

Education

board frazer

road drain O1 1896.59 1185369 118.5369

O2 781.09 488181.3 48.81813

O3 3404.47 2127794 212.7794


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TOTAL 380.1344

Kundan

nagar,Madar tekri

drain P 4473.24 2795775 279.5775

Frazor road

drain Q 2991.85 1869906 186.9906

Kalyani pura

by pass

channel R 17222 10763750 1076.375

Anasagar

EscapeChannel SYMBOL

Ganj drain H 1644 1027500 102.75

Savitri

college

Nagina bagh

Drain N 1306.72 816700 81.67

Board of sec.

Education

Drain O 1896.59 1185369 118.5369


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Kutchary

road Drain I 1066 666250 66.625

Inder Kot

Drain J 2508 1567500 156.75

Station roadDrain K 701.07 438168.8 43.81688

Masuda nadi G 2952.832 1845520 184.552

Kundan

Nagar drain P 4473.24 2795775 279.5775

Frazer road

drain Q 2991.85 1869906 186.9906

B Drain S 1368 855000 85.5

Happy valleynallah U 11162 6976250 697.625

C Drain V 1976.07 1235044 123.5044

D Drain T 7341.586 4588491 458.8491

Kalyani pura

by pass

Channel R 17222 10763750 1076.375


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Bisal Sagar W 858 536250 53.625

total 3413.791


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land use

coeff of

runoff

Area x

coeff of

run off

Weighted

coeff of

run off

proposed

coeff. Of

runoff

category %

Area ,

hectare

Medium dense 0.8 20.5715 0.55 11.31433 0.49 0.5

park, open space 0.2 5.142875 0.25 1.285719

Medium dense 0.65 26.962 0.55 14.8291 0.47 0.5

park, open space 0.1 4.148 0.25 1.037Hilly/forest/open are steep slope 0.25 10.37 0.35 3.6295

Medium dense 0.6 185.0659 0.55 101.7862 0.47 0.5

Hilly/forest/open are steep slope 0.4 123.3773 0.35 43.18204

Medium dense/High dense 0.45 91.97353 0.65 59.7828 0.485 0.5


Medium dense/High dense 0.5 46.25344 0.65 30.06473 0.5 0.5


Medium dense 0.7 84.75381 0.55 46.6146 0.48 0.5


park, open space 0.1 12.10769 0.25 3.026922

Medium dense 0.6 45.63863 0.55 25.10124 0.455 0.45


park, open space 0.15 11.40966 0.25 2.852414

Medium dense 0.7 26.66781 0.55 14.6673 0.55 0.55

park, open space 0.3 11.42906 0.55 6.285984

Green Belt 0.7 85.0279 0.25 21.25698 0.25 0.3

park, open space 0.3 36.44053 0.25 9.110132

Green Belt 1 175.8384 0.25 43.95959 0.25 0.3

oefficient (weighted coefficient of runoff)


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Green Belt 1 145.8545 0.25 36.46363 0.25 0.3

Green Belt 0.8 115.2382 0.25 28.80954 0.31 0.3

Medium dense 0.2 28.80954 0.55 15.84525

Green Belt 0.5 103.4231 0.25 25.85578 0.4 0.4

Medium dense 0.5 103.4231 0.55 56.88272

Medium dense 0.9 102.2113 0.55 56.21622 0.53 0.55Forest/open, steep slope 0.1 11.35681 0.35 3.974884

Medium dense 0.7 108.3644 0.55 59.60041 0.49 0.5

Forest/open, steep slope 0.3 46.44188 0.35 16.25466

Medium dense 0.3 46.31213 0.55 25.47167 0.46 0.5

Light industry/Govt ware house 0.3 46.31213 0.65 30.10288

Green belt 0.4 61.7495 0.25 15.43738

Green belt 0.5 193.264 0.25 48.31599 0.31 0.35

park, open space 0.1 38.65279 0.25 9.663198

govt offices/light density area 0.4 154.6112 0.4 61.84447

Forest/open, steep slope 0.5 38.37 0.35 13.4295 0.3 0.3

park, open space 0.5 38.37 0.25 9.5925

Medium dense / High dense 0.85 74.79309 0.65 48.61551 0.605 0.6



High density area/multi units attached 0.8 147.6416 0.7 103.3491



High density area/multi units attached 0.85 56.63125 0.7 39.64188 0.6475 0.68




High density area/multi units attached 1 43.81688 0.65 28.48097 0.65 0.68

Medium dense 0.55 67.03021 0.55 36.86661 0.44 0.45

park, open , average slope 0.2 24.37462 0.25 6.093655

Forest/Open, average slope 0.25 30.46828 0.35 10.6639

Medium dense 0.1 12.51313 0.55 6.882222 0.18892 0.35


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park, open , average slope 0 0 0.55 0 0.1375 0.45


L2 0.25 30.46828 0.35 10.6639

park, open space 0.1 12.51313 0.55 6.882222 0.345 0.35


Education Institutions,Semi urban 0.55 68.82222 0.35 24.08778Ratidang 0.1 12.51313 0.35 4.379596

Ratidang 0.65 140.2607 0.35 49.09123 0.38 0.4

park, open space 0.15 32.36784 0.55 17.80231

L4 0.2 43.15713 0.35 15.10499

park, open space 0.15 28.62347 0.55 15.74291 0.37 0.4


Ratidang 0.5 95.41156 0.35 33.39405

L4 0.25 47.70578 0.35 16.69702

park, open space 1 64.92813 0.55 35.71047 0.55

total A1

Area x

coeff of

run off

Anasagar

Escape

Channel

Ratidang 0.15 37.80703 0.35 13.23246 0.0525 0.4

Forest/Open, average slope 0.10.6

Education Institution, Semi urban 0.1 11.85369 0.35 0

park, open , average slope 0.1 11.85369 0.25

medium dense 0.5 59.26844 0.5

Govt. Institutions , Multistoried 0.3 35.56106 0.6

Govt. Institutions , Multistoried 0.2 9.763625 0.6 0


medium dense 0.75 36.61359 0.55



Hilly,Forest/Open area steep slope 0.2 42.55588 0.35


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medium dense 0.2 42.55588 0.55

Govt. Land,Open area, average slope 0.25 53.19484 0.25

Hilly,Forest/Open area steep slope 0.3 83.87325 0.35 0


Medium slope 0.6 167.7465 0.55


Park,open,average slope 0.025 4.674766 0.25

Medium dense 0.4 74.79625 0.55

Govt. Institutions , Multistoried 0.025 4.674766 0.6

Heavy industry 0.05 53.81875 0.75 0


Medium slope 0.6 645.825 0.55

Education Institution, Semi urban 0.02 21.5275 0.35

Hilly,Forest/Open area steep slope 0.3 322.9125 0.35


high density area /multi units attached 0.6 61.65 0.65 40.0725

Education Institutions,Semi urban 0.2 16.334 0.35 5.7169 0.515 0.5


High dense 0.7 57.169 0.6 34.3014

Education Institution, Semi urban 0.1 11.85369 0.35 4.148791 0.515 0.5


medium dense 0.5 59.26844 0.55 32.59764

Govt. Institutions , Multistoried 0.3 35.56106 0.6 21.33664


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Hilly,Forest/Open area steep slope 0.3 83.87325 0.35 29.35564 0.46 0.45

Govt. Land,Open area, average slope 0.1 27.95775 0.25 6.989438

Medium slope 0.6 167.7465 0.55 92.26058

Education Institution, Semi urban 0.55 102.8448 0.35 35.9957 0.43375 0.45

Park,open,average slope 0.025 4.674766 0.25 1.168691

Medium dense 0.4 74.79625 0.55 41.13794


Medium dense 0.5 42.75 0.55 23.5125 0.4625 0.5


Hilly,Forest/Open area steep slope 0.05 4.275 0.35 1.49625



Medium dense 0.25 174.4063 0.5 87.20313



Medium dense 0.35 43.22653 0.5 21.61327




Medium dense 0.35 160.5972 0.5 80.2986


Heavy industry 0.05 53.81875 0.75 40.36406 0.487 0.5


Medium slope 0.6 645.825 0.55 355.2038

Education Institution, Semi urban 0.02 21.5275 0.35 7.534625


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Hilly,Forest/Open area steep slope 0.3 322.9125 0.35 113.0194

Govt. Land,Open area, average slope 0.9 48.2625 0.3 14.47875 0.305 0.35

Education Institution, Semi urban 0.1 5.3625 0.35 1.876875

common runoff

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