Lok Sabha Question No. 4481 (UNSTARRED), answered on 2022-03-30
Subject: Rain Gauges and Radars
Ministry: EARTH SCIENCES
Asked by: Dean Kuriakose

## GOVERNMENT OF INDIA MINISTRY OF EARTH SCIENCES LOK SABHA

## UNSTARRED QUESTION NO. 4481 TO BE ANSWERED ON WEDNESDAY, 30 TH  MARCH, 2022

## RAIN GAUGES RADARS

## 4481.     ADV. DEAN KURIAKOSE:

Will the Minister of EARTH SCIENCES be pleased to state:

- (a) the details of rain gauges and radars in the State of Kerala;
- (b) the  total  number  of  rain  gauges  in  Kerala  that  are  required  according  to  the  Bureau  of  Indian Standard;
- (c) whether the Government has received any request to increase the number of rain gauges to the level prescribed by Bureau of Indian Standard; and
- (d) if so, the action taken in this regard ?

## ANSWER

## THE MINISTER OF STATE (INDEPENDENT CHARGE) FOR MINISTRY OF SCIENCE AND TECHNOLOGY AND EARTH SCIENCES (DR. JITENDRA SINGH)

- (a) A total number of 63 automatic stations, 30 Automatic Weather Station (AWS)+3Agro AWS+30 Automatic  Rainguages  (ARG)to  record  rainfall  are  already  functioning  in  the  State  of  Kerala. These  are in addition to 70 manual  observatories [Departmental (8)+Part  time  (4)+Non departmental  like  that  of  State  Government,  schools  etc  (58)].  Thus  a  total  number  of  133 observatories are already there and functioning in Kerala for rainfall monitoring.

Two Doppler Weather Radars (DWR) are operational in the State of  Kerala; one at Kochi and another at Thiruvananthapuram which meet the requirements of Kerala; especially the central and southern parts of Kerala.

- (b) There  is  a  document  published  by Bureau of Indian Standard (BIS) in  the  year  1994  on  the number of Non recording/Recording rainguages per Sq. Km. According to this, the requirement of rainguages for Kerala can be computed as given below.

The area of Kerala is 38800 Sq.Km, of which 80% is Coastal + Plain land and remaining 20% is with hills.

For the 31040 Sq. Km. consisting of Coastal+Plain land, 31040/500=63 Rain stations are needed whereas for the 7760 Sq.Km. hilly terrain, 7760/150 Sq.Km=52 Rain stations are needed. Thus, the number of total Rain monitoring stations as per BIS-1994 is 63+52=115 for Kerala.

- (c) - (d) Kerala already have 133 Rain stations at present against the requirement of 115 as per BIS-1994 Standard. There had been a request for installation of 100 more AWS in Kerala out of which 15 AWS  have  already  been  installed.  With  the  likely  installation  of  remaining  85  AWS  in  near future, the number of observatories for rainfall monitoring will become 218.

## Automatic Rain Guage (ARG) Network functioning over Kerala and Lakshdweep.

| Nature of Observatory   | Name of station    | Number   | Location list/ Type/ Class   | Departmental/ Non- departmental/ Part- time   | Functioning   |
|-------------------------|--------------------|----------|------------------------------|-----------------------------------------------|---------------|
| ARG                     | 1. Airport(Chakka) | 55CDE7EA | 11.41 o N 75.93 o E          | Departmental                                  | Functioning   |
| ARG                     | 2. Alappuzha       | 55CE401C | 9.49 o N 76.31 o E           | Departmental                                  | Functioning   |
| ARG                     | 3. Anakayam        | 55CDFA4E | 11.09 o N 76.11 o E          | Departmental                                  | Functioning   |
| ARG                     | 4. Anchal          | 55CE536A | 8.93 o N 76.92 o E           | Departmental                                  | Functioning   |
| ARG                     | 5. Cheruthazham    | 55CE7586 | 12.06 o N 75.25 o E          | Departmental                                  | Functioning   |
| ARG                     | 6. Chimoni         | 55CE368C | 10.44 o N 76.46 o E          | Departmental                                  | Functioning   |
| ARG                     | 7. Enamakkal       | 55E95E62 | 10.5 o N 76.1 o E            | Departmental                                  | Functioning   |
| ARG                     | 8. Erimayur        | 55CE0DC4 | 10.65 o N 76.4617 o E        | Departmental                                  | Functioning   |
| ARG                     | 9. Kanjirapuzha    | 55CE1060 | 10.99 o N 76.53 o E          | Departmental                                  | Functioning   |
| ARG                     | 10. Keerampara     | 55CE25FA | 10.1 o N 76.6672 o E         | Departmental                                  | Functioning   |
| ARG                     | 11. Konni          | 55CD3182 | 9.23 o N 76.87 o E           | Departmental                                  | Functioning   |
| ARG                     | 12. Mattanur       | 55CDE938 | 11.91 o N 75.56 o E          | Departmental                                  | Functioning   |

## Annexure

| 13. Muvattupuzha   | 55E9652A   | 9.99 o N 76.56 o E     | Departmental   | Functioning   |
|--------------------|------------|------------------------|----------------|---------------|
| 14. Meenangadi     | 55CE0316   | 11.66 o N 76.16 o E    | Departmental   | Functioning   |
| 15. Meenkara       | 55CE1EB2   | 10.61 o N 76.79 o E    | Departmental   | Functioning   |
| 16. Neeleswaram    | 55E96BF8   | 10.18 o N 76.46 o E    | Departmental   | Functioning   |
| 17. Palluruthy     | 55CE4ECE   | 9.9264 o N 76.2621 o E | Departmental   | Functioning   |
| 18. Panniyoor      | 55CE6822   | 12.08 o N 75.35 o E    | Departmental   | Functioning   |
| 19. Peringamala    | 55E9788E   | 8.75 o N 77.04 o E     | Departmental   | Functioning   |
| 20. Perumkadavila  | 55CD2C26   | 8.44 o N 77.11 o E     | Departmental   | Functioning   |
| 21. Thenmala       | 55CE5DB8   | 8.95 o N 77.06 o E     | Departmental   | Functioning   |
| 22. Vazhakunnam    | 55CE385E   | 9.34 o N 76.73 o E     | Departmental   | Functioning   |
| 23. Vilangankunnu  | 55CE7B54   | 10.55 o N 76.16 o E    | Departmental   | Functioning   |
| 24. Vyanthala      | 55CE66F0   | 10.26 o N 76.29 o E    | Departmental   | Functioning   |

## Details of District Rainfall Monitoring Scheme (DRMS) stations

|   Sl. No | Station          | District           |   Latitude (In Decimal Degree) |   Longitude (In Decimal Degree) | Status     |
|----------|------------------|--------------------|--------------------------------|---------------------------------|------------|
|        1 | Neyyattinkara    | Thiruvananthapuram |                        8.38333 |                         77.0833 | Functional |
|        2 | Nedumangad       | Thiruvananthapuram |                        8.6     |                         77      | Functional |
|        3 | Varkala          | Thiruvananthapuram |                        8.73787 |                         76.7163 | Functional |
|        4 | Aryankavu        | Kollam             |                        8.9833  |                         77.1667 | Functional |
|        5 | Kollam Rly       | Kollam             |                        8.8833  |                         76.6    | Functional |
|        6 | Kurudamannil     | Pathanamthitta     |                        9.35328 |                         76.7368 | Functional |
|        7 | Konni            | Pathanamthitta     |                        9.23    |                         76.87   | Functional |
|        8 | Kayamkulam       | Alappuzha          |                        9.18333 |                         76.5    | Functional |
|        9 | Haripad          | Alappuzha          |                        9.28333 |                         76.45   | Functional |
|       10 | Kayamkulam_ Agri | Alappuzha          |                        9.17    |                         76.52   | Functional |
|       11 | Cherthala        | Alappuzha          |                        9.7     |                         76.3333 | Functional |
|       12 | Chengannur       | Alappuzha          |                        9.31667 |                         76.6167 | Functional |
|       13 | Mavelikkara      | Alappuzha          |                        9.25    |                         76.5333 | Functional |
|       14 | Mancompu         | Alappuzha          |                        9.44302 |                         76.4245 | Functional |
|       15 | Vaikom           | Kottayam           |                        9.75    |                         76.4    | Functional |
|       16 | Kozha            | Kottayam           |                        9.75    |                         76.5667 | Functional |
|       17 | Kanjirappally    | Kottayam           |                        9.55727 |                         76.7894 | Functional |
|       18 | Kumarakam        | Kottayam           |                        9.61754 |                         76.4301 | Functional |
|       19 | MunnarKseb       | Idukki             |                       10.1     |                         77.0667 | Functional |
|       20 | Thodupuzha       | Idukki             |                        9.8333  |                         76.6667 | Functional |
|       21 | Myladumpara_Agri | Idukki             |                        9.1333  |                         77.0333 | Functional |
|       22 | Idukki           | Idukki             |                        9.8333  |                         76.9167 | Functional |
|       23 | Peermade         | Idukki             |                        9.5667  |                         76.9833 | Functional |

|   24. | Piravom         | Ernakulam   |     9.8 |   76.4667 | Functional   |
|-------|-----------------|-------------|---------|-----------|--------------|
|    25 | Perumbavur      | Ernakulam   | 10.1167 |   76.4833 | Functional   |
|    26 | AlwayePwd       | Ernakulam   | 10.1167 |   76.35   | Functional   |
|    27 | Ernakulam South | Ernakulam   |  9.9667 |   76.2833 | Functional   |
|    28 | Enamackal       | Thrissur    | 10.5    |   76.1    | Functional   |
|    29 | Vadakkancherry  | Thrissur    | 10.6617 |   76.2363 | Functional   |
|    30 | Chalakudy       | Thrissur    | 10.3    |   76.3333 | Functional   |
|    31 | Irinjalakuda    | Thrissur    | 10.3447 |   76.2094 | Functional   |
|    32 | Kodungallur     | Thrissur    | 10.2167 |   76.2    | Functional   |
|    33 | Chittur         | Palakkad    | 10.7    |   76.7333 | Functional   |
|    34 | Kollengode      | Palakkad    | 10.6167 |   76.7167 | Functional   |
|    35 | Parumbikulam    | Palakkad    | 10.3333 |   76.75   | Functional   |
|    36 | Alathur         | Palakkad    | 10.6333 |   76.55   | Functional   |
|    37 | Ottapalam       | Palakkad    | 10.7833 |   76.3833 | Functional   |
|    38 | Thrithala       | Palakkad    | 10.8333 |   76.1    | Functional   |
|    39 | Pattambi        | Palakkad    | 10.8    |   76.2    | Functional   |
|    40 | Mannarkkad      | Palakkad    | 10.9833 |   76.4667 | Functional   |
|    41 | Vadakara        | Kozhikode   | 11.6    |   75.5833 | Functional   |
|    42 | Quilandi        | Kozhikode   | 11.45   |   75.7    | Functional   |
|    43 | Ponnani         | Malappuram  | 10.7833 |   75.9167 | Functional   |
|    44 | Nilambur        | Malappuram  | 11.2833 |   76.2333 | Functional   |
|    45 | Perinthalamanna | Malappuram  | 10.9667 |   76.2333 | Functional   |
|    46 | Angadipuram     | Malappuram  | 10.9667 |   76.2    | Functional   |
|    47 | Manjeri         | Malappuram  | 11.1167 |   76.1333 | Functional   |

|   48. | Vythiri      | Wayanad   |   11.55 |   76.0333 | Functional   |
|-------|--------------|-----------|---------|-----------|--------------|
|    49 | Ambalavayal  | Wayanad   | 11.6167 |   76.2    | Functional   |
|    50 | Kuppady      | Wayanad   | 11.6833 |   76.2667 | Functional   |
|    51 | Mananthavady | Wayanad   | 11.8    |   76.0167 | Functional   |
|    52 | Taliparamba  | Kannur    | 12.05   |   75.35   | Functional   |
|    53 | Irikkur      | Kannur    | 11.9667 |   75.55   | Functional   |
|    54 | Thalassery   | Kannur    | 11.7533 |   75.4929 | Functional   |
|    55 | Kudlu        | Kasaragod | 12.5    |   75      | Functional   |
|    56 | Hosdurg      | Kasaragod | 12.3    |   75.1    | Functional   |

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