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APPENDIX 1 MONTHLY DRAINAGE DISCHARGE, Ayur 1972-'93 (m3 lsec) Gauging station : AYUR River : l ttikara river River basin : lttikara

Year January 4.40 4.93 5.05 5.09 8.21

10.79 3.40

11.84 0.51 3.70 2,95 1.34 3.94 6.26 3.54 0.85 2.05 0.36 4.95 3.53 3.53

I I

Source- : IDRB

February 3.82 1.94 2 -24 3.36 3.81 5.92 1.83

10.77 0.1 1 1.10 1.69 0.89 2.46

March

0.38 0.64 0.32 0.84 0.28 0.07 0.96 1.07 0.56 0.92 0.85 0.20

'ear Book, 1982, .

April June 7.47

29.83 9.25

51.35 5.22

58.16 21.76 32.54 12.1 1 69.40 24.80 2.02

30.69 79.89

5.41 31.09 21.83 34.71 38.53

134.57 65.41

July 45.89 47.0 1 42.52 82.43 24.98 58.45 64.79 55.96 25.05 50.90 16.09

9.01 69.93 61.99 12.54

8.00 46.55 52.83 57.57 80.56 87.18

August 17.59 19.42

1 09.93 77.04 21.66 32.51 47.59 41,59 15.12 53.50 18.33 32.06 14.76 16.26 48.65 23.96 41.32 40.35 35.33 57.56 60.35

September 17.70 9.25

56.92 66.35 16.30 36.71 23.05 37.40

5.47 68.60

5,95 25.87 13.01 16.28 8.20

23.73 87.66 47.07 1 1 -72 14.38 57.66

October 62.91

154.81 53.95 83.07 48.58 53.74 22.08 44.86

8.50 59.70

6.00 12.38 69.14 35.89 24.86 57.10 18.61 72.31 28.95 34.98

130.57

November 11.97 41.98 19.26 98.23 73.83 71.29

150.74 53.13 21 -98 42.40

8.22 16.48 23.09 35.44 29.22 41 -97 11.36 35.33 59.07 50.22

1 10.84

December 8.81

12.67 6.21

15.73 31.32 26.59 16.63 23.44

6.73 10.70 2.67 6.07 6.54

10.41 3.96

19.17 0.42 8.1 7 8.76

10.62 25.84

Annual

APPENDIX 2 TYPES OF ROAD AND ROAD LENGTH IN ITTIKARA DRAINAGE BASIN, 1994

Mu khathala Kottara kara lttikara Vettikkavala Chadayamangalam Anchal Paravur Municipality

BlockslMunicipalities State highway

krns

National highway

krns

PWD I Panchavat Roads - 1 Railway Tracks roads

kms

Railway Station

Coastal lane krns

22.00

Black topped kms

Source: Dept. of Economics & Statistics, 7996.

Metal topped kms

Earthen kms

Total kms

APPENDIX 3 CROP COMBINATION METHOD (after Weaver, 1954)

Let XI, X Z , X3, X4, X5, ------Xn be the percentage share of each crop under a unit area and N the number of crops considered for the exercise.

One crop combination (C,) where N = 1

C , = ( (100%-%)"2 /N)

Two crop combination (C2) where N = 2

C2 = ((50% - XI) "2 + (50% - X2)"2 )) I N

Three crop combination ( C3) Where N = 3

C3 = (( 33.3% - X1)"2 + (33.3% - X2)"2 + (33.3% - X3) "2 ) / N

n crop combination Where N = n

Cn = ((100%1n-X1)A2 +(100%In-X2)A2+(100%ln-X3)A2+ ) I N

The lowest value among C,, CZ, C3, , . . . . .Cn represents the crop combination.

Different authors have variously modified the method. One of the modifications is not to divide the sum by number of crops (N) and to avoid the square root.

APPENDIX 4a RAINFALL (AYIROOR), 2000-1TTIKARA DRAINAGE BASIN

Stationcode :AYIROOR Station Name: AYIROOR Parameter Code : MPS (Rainfall-SRG in mm)

Year : 2000

2031 -4 (mm)

Day

1 2 3 4 5 6 7 8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Jan.

-

29.2 1.8

-

Feb.

0.2

12.6 -

2.0 -

-

. . . . . . .

. . . . . . .

Mar.

-

- -

- 31.0

-

- 1 I 24.6

0.2 6.4

Apr.

13.8

-

0.2 7.4 5.2

17.8

-

-

6.8

93.6

0.2 - -

-

.......

May

- -

- 2.8 - - - 0.6 - - -

11.4

4.2 - -

-

4.6 -

June

6.8

7.6 I .8 3.4

37.8 82.2 46.0 15.2 17.2 15.8 6.5 4.6 3.4 1.6 2.8

-

- 45.2 1.8

14.8

9.6 18.4 12.6 9.2

. . . . , ,

Oct.

37.8 57.8 26.4 27.2

- 7.8

19.6 31.2

3.2

- 38.6

6.2 52.6

-

- -

- -

17.6 - - - -

- -

. . . . . .

July

8.4

6.2 0.8 4.6 9.6 0.8

10.6 5.4 7.8 - -

- -

- -

- 4.8 -

- -

- - - -

-

-

37.6 - 0.8

Nov.

-

- -

- 8.6 -

8.4 - -

9.6 -

- -

30.4 40.0 28.4

0.6 -

-

. . . . . . .

Dec.

-

-

-

- - - -

68.6 0.8

Aug.

-

- - -

23.4 84.0 62.0

- -

43.8 -

- 24.6 14.0 18.6 22.0 17.6 6.4

11.4 16.8 48.4 97.6 40.7 17.6 10.8

- -

Sep.

-

- -

- - - -

-

- - 3.2 - - - -

57.8 13.8 3.2

11.4 58.6 61.4 24.2 48.8

APPENDIX 4b RAINFALL (AYIROOR), 2001 -1TTIKARA DRAINAGE BASIN

Station Code : AYIROOR Station Name: AYlROOR Parameter Code : MPS (Rainfall-SRG in mm)

Year : 2001

.. N.A. I

1747.6 (mrn)

Day

1 2 3 4 5 6 7 8 9

10 11 12 13 14 15 ? 6 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Jan.

24

Feb.

8

.I I

......

......

......

Mar.

- -

-

- -

-

-

-

-

Apr.

- -

21.4 10.2 1.2 3.8

14.6 0.8

12.0 10.4 19.6 5.2

0.6

3.4 17.2

1.2

-

21.6 7.2

18.8 2.6

17.2 ........

May

26.8 12.6

- -

20.0 - - 8.6 - -

- -

- -

- -

-

- 21.8

- -

- 19.8

- 14.6

June

- - - 0.6 0.4 3.6 2.8 0.4

12.0 5.2 6.0

22.6 13.2 21,4 2.2

15.6

3.4 2.8

20.4 4.8

38.4 2.6

13.8 6.8 -

Sep.

- - -

..

-

-

-

- -

- 6.4

46.2 186 42.4 54.4 36.2 22.4 17.0 6.4 9.4 16.2 16.4 .......

July

5.2 11.4 38.8 14.2 21.6 18.6 9.2

109.2 14.00

-

- 31.00

- -

-

-

-

- - 2.6

A0.0 -

2.6 5.2

Oct.

6.2 8.4

1.8

3.8 42.6 24.8 17.4

1.8

8.6 16.8 2.2

41.8 -

36.2 - -

20.4

-

- 62.8

Aug.

-

- 2.8

30.0 2.0 - - - - 2.0

1.8 3.4

1.2

2.2 4.2

14.6 4.4 8.2 5.0 3.2 8.8

18.2 18.8

-

-

Nov.

-

-

-

2.2

-

-

36.2 19.8 9.4

-

- - -

59.2 -

-

-

Dec.

13.6 9.8 -

- - -

5.2 25.0

Missing Days 0 0 0 0 0 0 0 0 0 0 0 Rainfaltin month 1 7 0 92 159 12 66 128 9 222 41 0

No. of Rainy Days I 2 0 19 7 21 14 17 12 15 5 4

Max. Daily Rainfall 24 I 1 0 22 27 38 109 30 54 63 59 25

Annual Rainfall 1747.6 (mm) Source : IDRB Year Book, 2002

APPENDIX 5a NORMALS OF MONTHLY RAINFALL (I 931 -1960)

APPENDIX 5b ANAtYSlS OF ANNUAL RAINFALL (1901-80) - STATISTICAL DETAILS

Station Kottarakara Nilamel Punalur

APPEN DlX 5c PROBABILtTY ANALYSIS OF ANNUAL RAINFALL (1 901 -80)

Total Kottarakara - 2670.9 Nilamel - 2591.5 Punalur - 3159.4

Feb. 26.2 33.8 38.3

Jan. 17.6 17.8 19.6

Type of analysis No. of years of data analysed Mean annual rainfall (mrn) Standard deviation (rnrn) Coefficient of variation (%) Standard error of estimate Relative standard error of mean (%) Highest rainfall Year Lowest rainfall Year Range

Kottarakara 80.0

2570.8 498.7

19.4 55.8 2.2

3937.8 (1 933) 1332.6 (1 970) 2605.2

9.

Dec. 60.7 82,O 69,6

Mar. 71.9 90.4 103.9

Probability % 10 20 30 40 50 60 70 80 90

Nil a me1 25.0

2673.6 657.3

24.6 13 1.5

4.9 4125.6 (1 967) 1 129.8 (1 970) 2995.8

Apr. 162.4 188.7 218.2

Punalur 80.0

2922.7 618.5 21.2 69.2

2.4 5076.7 ( 1946) 1943.2 (1 973) 3 133.5

Source : Nagarajan, 1987

Kottarakara 3650 3350 3100 2875 2650 2450 2200 2050 1850

May 259.1 214.4 292.3

,< Nilamel 3575 3200 2925 2700 2525 2350 2200 2075 1925

Punalur 4400 4050 3750 3480 3 200 2950 2700 2480 2240

June 534.9 593.1 580.4

July 430.3 354.3 541.5

Oct. 342.4 286.0 431.5

Nov. 229.4 210.4 271.5

Aug. 308.9 340.9 339.9

Sep. 226.6 189.7 252.7

APPENDIX 6 DISTRIBUTION OF SEASONAL CROPS, PANCHAYAT-WISE, 1996

1 Mayyanadu 2 Eravipuram 3 Thri kkovilvattom 4 Kottamkara 5 Veliyam 6 Pooyappally 7 Kareepra 8 Ezhukone 9 Neduvathur

10 Kottarakara I 1 Poothan kulam 12 Kalluvathu kkal 13 Chathannur 14 Adichanallur 15 Nedurnpana 16 Ummannur 17 Kiiimanur 18 Madavur 19 Pallickal 20 Pazhaya kunnumel 21 Chithara 22 Kadakkal 23 Chadayamangalam 24 lttiva 25 Velinallur 26 Elammadu 27 Nilamel 28 Paravur (Municipality) 29 Kulathupuzha 30 Yeroor 31 Alayarnon 32 Anchal 33 Edamulakkal

No. Panchayats I Paddy (7%) Pulses (%) Cereals (%) Pepper (%) Ginger (%) Turmeric (%) Banana

220 11 10 60 25 1 5 0.2 196 200 26 175 23 25 3 180 192 100 540 42 15 1 40 3 25 2 5 0.4 135 692 52 30 2 102 8 30 2 100

Contd.. . . . . , . . . . , . . .

I

I SI. 1 No. Panchayats I (%) Pineapple (%) Tuber (%) Tapioca (%) Vegetable (yo) Total

Mayyanadu Eravipuram Thrikkovilva ttom Kottamkara Veliyam Pooyappally Kareepra Ezhukone Neduvathur Kottarakara Poothan kulam Kalluvathukkal Chathannur Adichanallur Nedumpana Urnmannur Kilimanur Madavur Pallickal Pazhayakunnumel Chithara Kadakkal Chadayamangalam l tt iva Velinallur Elarnmadu Nilarnel Paravur (Municipality) Kulathupuzha Yeroor Alayamon Anchal Edamulakkal

Total

Source : Panchayat Vikasana Rekha, 1996

Source : Vikasana Rekha, 1996

s I. 7 a 9 10 11 12 No. Panchayat

1 Mayyanadu 2 Eravipuram 3 Thrikkovilvattom 4 Kottamkara -5 Veliyam 6 Pooyappally 7 Kareepra 8 Ezhukone 9 Neduvathur

1 0 Kottarakara 1 1 Poothankulam 12 Kalluvathu kkal 13 Chathannur 14 Adichanallur 15 Nedumpana 16 Ummannur 17 Kilimanur 18 Madavur 19 Pallickal 20 Pazhayakunnumel 21 Chithara 22 Kadakkal 23 Chadayamangalam 24 lttiva 25 Velinallur 26 Elammadu 27 Nilamel 28 Paravur (Municipality) 29 Kulathupuzha 30 Yeroor 31 Alayamon 32 Anchal 33 Edamulakkal

Total

Coconut (%) Cocoa (%) Rubber (%) Clove (%) Mixed treecrops (%) Total

1134 84 73 5 1430 690 100 690 820 85 962 900 77 10 1 209 18 1156

59 2 949 38 1537 60 1599 977 74 188 16 150 13 1142 700 59 300 25 100 12 895 804 87 60 7 859 750 6 1240 430 48 350 39 70 8 550

1107 82 244 18 1351 5 1105 41 450 17 981 37 221 4

2010 97 15 1 2055 1110 93 30 3 15 1 1162

2 1466 93 80 5 1496 1 1068 36 1 844 63 99 1870

845 78 200 19 880 850 80 200 19 858

191 33 350 60 5 1 231 300 34 540 62 330 650 13 3225 63 1278 24 1928

1167 45 961 37 415 16 1627 51 5 33 960 62 582 605 21 2141 74 759 689 45 855 55 689 803 36 1120 51 100 8 1088 550 33 1000 60 40 2 670

262 4 6000 92 555 505 19 5 0.2 1850 69 175 7 775

1990 87 299 13 308 61 6 43 720 51 30 2 699 930 37 1492 59 1049

33699

APPENDIX 8 OCCUPATIONAL STRUCTURE (Ten-fold classification), 3991

Panchayat

Mayyanadu Eravipurarn Thri kkovilvattom Kottam kara Veliyam Pooyappally Kareepra Ezhukone Neduvathur Kottarakara Poothankulam Kalluvathukkal Chathannur Adichanallur Nedumpana Ummannur Kilimanur Madavur Pallickal Pazhayakunnumel Chithara ~adakkal

Total main

workers 10170 13887 91 63

13640 8998 6257 6388 6271 7564 7543 7556

12182 12238 7538

10633 9048 781 4 7542 7432 9490

13428 13571

Total Cultivators

% of cultivators to main workers

Total Agricultural

labourers

O/O of agri. to main workers

Total LFP

% of LFP to MW

Total % of M&Q Total M &Q to MW MPSH I I

25 4

33 104 295 1 24 98

114 174 23

111 18

455 64 42 39 10 33 96 72 29 64

0.3 0,1 0.4 0.8 3.3 2.0 1.5 I .8 2 -3 0.3 1.5 0.2 3.7 0.8 0.4 0.5 0.1 0.4 1.3 0.8 0.3 0.5

Contd.. . . . . . .

145 286 127 123 76 70 43 22 45 25 87 75

179 65 85 38 31 77 70 76

295 66

. . . . .

Panchayat

Mayyanadu Eravipuram Thrikkovilvattom Kottamkara Veliyam Pooyappally Kareepra Ezhukone Neduvathur Kottarakara Poothankulam Kalluvathukkal Chathannur Adichanallur Nedurnpana Ummannur Kilimanur Madavur Pallickal Pazhayakunnumel Chithara

% of MPSH to MW

1.4 2.0 I .4 0.8 0.8 1.1 0.7 0.4

O/- of MPSOH to MW

17.9 23.6 3 3.7 37.0 18.5 17.5 13.7 22.8 16.3 8.4 22.0 15.8 16.8 21.5 21.3 15.9 7.1 9.0 8.1 17.5 4.7

% of const. otal onstruction o MW rtal 1 F.. % of T&C otal

to MW ITS.

Contd ......

% of TSC Total :o MW

7.3 9.6 7.1 7.2 3 .O 3.5 4.8 5.1 4.3 7.7 3.6 4.1 5.9 5.8 3.4 2.4 4.1 5.9 3.8 3.5 3.5

other service

2243 21 71 1706 2632 1109 957 1336 1213 971 1982 799 1502 1802 1462 1427 1159 916 891 969 1014 1257

Panchayat

Chadayamangalam lttiva Velinallur Elammadu Nilamel Paravur Kulathupuzha Yeroor Alayamon Anchal Edamulakkal

Total main

workers 542 1

I Total 1 292083

Total Cultivators

1040 2843 1816 847 402 968 2008 2786 1198 1717 3025

% of cultivators to main workers

Total Agricultural

labourers

% of agri. to main workers

Total LFP

271 512 182 300

66 1391 1394 1207 389 280 323

% of LFP to MW

Total M &Q

47 16 51 33 2

31 4 9

16 14

1 04

Total MPSH

0.8 2759 Contd . . . . . . . . . . . .

Panchayat

Kadakkal Chadayamangalarr lttiva Velinallur Elammadu Nilamel Paravur Kulathupuzha Yeroor Alayamon Anchal Edamulakkal

I % o f MPSH to

IF- 1 .o

0.4 1.5 0.5 0.8 1.0 0.5 0.2 1.1 0.5

Total MPSOH

1044 497 885 578 728 1 59

1944 218 313 406 987

1474

% of MPSOH to MW

Total construction

% of const to MW

Total T & C

L.F.P, - Live Stock, Forestry, Fishing, Hunting & Plantation orchards and allied activities M.P.S.H. - Manufacturing, Processing, Servicing and Repairs in Household industry M.P.S.0.H - Manufacturing, Processing, Servicing and Repairs in other than Household industry T.S.C. - Transport, Storage and Communications

Total TSC

19 % of TSC

to MW

4 -0 3.4 2.0 2.5 2.3 3.7 6.8 2.1 2.1 3.7 4.8 2.7

4.6

Source , : Census of India, 199 1

20 21 Total other

service 1526 743

1013 810 789 440

% of OS to MW

11.3 13.7 10.6 12.5 14.7 13.3

APPENDIX 9 OCCUPATIONAL STRUCTURE (Four-fold classification), 1983

Panchayat Total main 1 Cultivators % of cultivators to main workers

Agricultural labourers

Mayyanadu Eravipuram Thrikkovilvattom Kottamkara Veliyam Pooyappally Kareepra Ezhu kone Neduvathur Kottarakara Poothan kulam Kalluvathu kkal Adichanallur C hathannur Nedumpana Ummannur Kilimanur Madavur

% of agri. to main workers

House hold industry

% of house hold to main

workers

Other workers

10 % of other workers to workers

75.5 78.3 64.2 67.0 38.2 39.4 50.1 57.5 42.0 69.5 48.5

62.8 42.0 1

Contd . . . .

Cultivators Panchayat

Pall ickat Pazhayakunnumel Chithara Kada kkal Chadayamangalam l tt iva

Total main workers

Velinallur Elammadu Nitamel Paravur Kulathupuzha Y eroor Alayamon Anchal Edamulakkal

I Total 1 215708

% of agri. to main workers

% of cultivators to main workers

workers

Agricultural labourers

Other workers workers to1

workers 27.0 36.9 28.3 31.5 34.7 28.4 38,O 31.4 28.8 72.8 30.0 29.0 34.1 43.3 39.2

Source : Census of India, 1997

APPENDIX 10 OCCUPATIONAL STRUCTL'RE (Four-fold classification), 1991

Panchayat Agricultural labourers

Total main workers

Mayyanadu Eravipuram Thrikkovilvattom Kottamkara Veliyam Pooyappally Kareepra Ezhukone Neduvathur Kottara kara Poothankulam Kalluvathu kkal Chathannur Ad ichanallur Nedumpana Ummannur Kilimanur Madavur Pallickal Pazhayakunnumel Chithara

Cultivators % of house hold to main

workers

% of agri. to main workers

% of cultivators main workers

House hold industry

Other workers

7465 12445 7422

11165 4230 31 72 3525 3774 3626 51 56 371 2 5380 6671 4728 5286 3798 2797 3088 2944 4253 4575

Contd.

% of other workers to

workers

73.4 89.7 81 -1 82 -2 47.0 50.7 55.2 60.1 47.9 68.4 49,2 44.1 54.5 62.7 49.7 41.7 35.7 40.9 39.6 44,7 34.2 ...

10 % of other workers to

workers 37.3 47,3 35.4 38.3 47.1 31.9 68.2 31.2 . 31 .I 41 -6 49.4 43.5

Total main workers

Cultivators YO of cultivators main workers

Agricultural labourers

% of agri. to main workers

House iold industry

% of house old to main

workers 0.5 0 -9 1 -0 0 -4 1.5 0.5 0.8 1 .o 0.5 0.2 1.1 0.5

Other workers

Panchayat

Kadakkal Chadayamangalam l ttiva Velinallur Elammadu Nilamel Paravu r Kulathupuzha Yeroor Alayamon Anchal Edamulakkal

Total

Source : Census of India, 1997

APPENDIX I 1 METHODS FOR CALCULATING AREA, GROSS CROPPED AREA AND

POPULATION INDICES

Area Index (Al)

Where A-p : Geographical area of a panchayat T-Ba : Total geographical area of all the panchayats in the basin

Gross Cropped Area lndex (GCA-I)

GCA-I = (GCA-p I T-Bgca) * 100

Where GCA-p : Grossed cropped area of a panchayat T-Bgca : Total grossed cropped area of all the panchayats in the basin

Population index ( P I)

P I = (P-p/T-Bp)'100

Where P-p : Total population of a panchayat T-Bp : Total population of all the panchayats in the basin