Datasets:
obs_date timestamp[ns] | zone_no int64 | zone_name string | argid string | device_id int64 | rainfall_mm float64 | rainfall_prev_mm float64 | rainfall_24h_mm float64 | progressive_mm float64 | rainfall float64 | previous_rainfall int64 | rainfall24 float64 | progressive float64 | datestring24 string | datestringlasthour string | progressflag int64 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
2020-11-03T00:00:00 | 1 | Kathivakkam | Zone_01_Kathivakkam | 604 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 1 | Thiruvottiyur | Zone_01_Thiruvottiyur | 507 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 2 | Division 15 Manali | Zone_02_Division_15_Manali | 560 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 2 | Manali | Zone_02_Manali | 506 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 3 | Madhavaram | Zone_03_Madhavaram | 512 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 3 | Puzhal | Zone_03_Puzhal | 561 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 4 | Tondiarpet | Zone_04_Tondiarpet | 513 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 5 | GCC | Zone_05_GCC | 493 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 5 | Royapuram | Zone_05_Royapuram | 514 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 6 | Division 65 Kolathur | Zone_06_Division_65_Kolathur | 562 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 6 | T.V.K Nagar | Zone_06_T.V.K_Nagar | 515 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 7 | Ambattur | Zone_07_Ambattur | 516 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 7 | Unit 18 Division 81 Vanagaram | Zone_07_Unit_18_Division_81_Vanagaram | 563 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 8 | Anna Nagar | Zone_08_Anna_Nagar | 517 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 8 | Anna Nagar Malar Colony | Zone_08_Anna_Nagar_Malar_Colony | 525 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 9 | Ice House | Zone_09_Ice_House | 565 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 9 | Teynampet | Zone_09_Teynampet | 518 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 10 | Kodambakkam | Zone_10_Kodambakkam | 519 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 11 | UNIT 32 MADURAVOYAL | Zone_11_UNIT_32_MADURAVOYAL | 564 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 11 | Valasaravakkam | Zone_11_Valasaravakkam | 520 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 12 | Alandhur | Zone_12_Alandhur | 521 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 12 | Division 156 Mugalivakkam | Zone_12_Division_156_Mugalivakkam | 569 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 12 | Meenambakkam - 6A Gate | Zone_12_Meenambakkam_-_6A_Gate | 660 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 13 | Adyar | Zone_13_Adyar | 522 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 13 | Adyar Eco Park | Zone_13_Adyar_Eco_Park | 505 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 13 | Unit 39 Adyar | Zone_13_Unit_39_Adyar | 610 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 14 | Perungudi | Zone_14_Perungudi | 523 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 14 | Unit office 41 Perungudi | Zone_14_Unit_office_41_Perungudi | 611 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 15 | Sholinganallur | Zone_15_Sholinganallur | 524 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-03T00:00:00 | 15 | Uthandi | Zone_15_Uthandi | 566 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-03 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 1 | Kathivakkam | Zone_01_Kathivakkam | 604 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 1 | Thiruvottiyur | Zone_01_Thiruvottiyur | 507 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 2 | Division 15 Manali | Zone_02_Division_15_Manali | 560 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 2 | Manali | Zone_02_Manali | 506 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 3 | Madhavaram | Zone_03_Madhavaram | 512 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 3 | Puzhal | Zone_03_Puzhal | 561 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 4 | Tondiarpet | Zone_04_Tondiarpet | 513 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 5 | GCC | Zone_05_GCC | 493 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 5 | Royapuram | Zone_05_Royapuram | 514 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 6 | Division 65 Kolathur | Zone_06_Division_65_Kolathur | 562 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 6 | T.V.K Nagar | Zone_06_T.V.K_Nagar | 515 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 7 | Ambattur | Zone_07_Ambattur | 516 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 7 | Unit 18 Division 81 Vanagaram | Zone_07_Unit_18_Division_81_Vanagaram | 563 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 8 | Anna Nagar | Zone_08_Anna_Nagar | 517 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 8 | Anna Nagar Malar Colony | Zone_08_Anna_Nagar_Malar_Colony | 525 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 9 | Ice House | Zone_09_Ice_House | 565 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 9 | Teynampet | Zone_09_Teynampet | 518 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 10 | Kodambakkam | Zone_10_Kodambakkam | 519 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 11 | UNIT 32 MADURAVOYAL | Zone_11_UNIT_32_MADURAVOYAL | 564 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 11 | Valasaravakkam | Zone_11_Valasaravakkam | 520 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 12 | Alandhur | Zone_12_Alandhur | 521 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 12 | Division 156 Mugalivakkam | Zone_12_Division_156_Mugalivakkam | 569 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 12 | Meenambakkam - 6A Gate | Zone_12_Meenambakkam_-_6A_Gate | 660 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 13 | Adyar | Zone_13_Adyar | 522 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 13 | Adyar Eco Park | Zone_13_Adyar_Eco_Park | 505 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 13 | Unit 39 Adyar | Zone_13_Unit_39_Adyar | 610 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 14 | Perungudi | Zone_14_Perungudi | 523 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 14 | Unit office 41 Perungudi | Zone_14_Unit_office_41_Perungudi | 611 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 15 | Sholinganallur | Zone_15_Sholinganallur | 524 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-04T00:00:00 | 15 | Uthandi | Zone_15_Uthandi | 566 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-04 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 1 | Kathivakkam | Zone_01_Kathivakkam | 604 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 1 | Thiruvottiyur | Zone_01_Thiruvottiyur | 507 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 2 | Division 15 Manali | Zone_02_Division_15_Manali | 560 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 2 | Manali | Zone_02_Manali | 506 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 3 | Madhavaram | Zone_03_Madhavaram | 512 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 3 | Puzhal | Zone_03_Puzhal | 561 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 4 | Tondiarpet | Zone_04_Tondiarpet | 513 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 5 | GCC | Zone_05_GCC | 493 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 5 | Royapuram | Zone_05_Royapuram | 514 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 6 | Division 65 Kolathur | Zone_06_Division_65_Kolathur | 562 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 6 | T.V.K Nagar | Zone_06_T.V.K_Nagar | 515 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 7 | Ambattur | Zone_07_Ambattur | 516 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 7 | Unit 18 Division 81 Vanagaram | Zone_07_Unit_18_Division_81_Vanagaram | 563 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 8 | Anna Nagar | Zone_08_Anna_Nagar | 517 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 8 | Anna Nagar Malar Colony | Zone_08_Anna_Nagar_Malar_Colony | 525 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 9 | Ice House | Zone_09_Ice_House | 565 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 9 | Teynampet | Zone_09_Teynampet | 518 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 10 | Kodambakkam | Zone_10_Kodambakkam | 519 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 11 | UNIT 32 MADURAVOYAL | Zone_11_UNIT_32_MADURAVOYAL | 564 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 11 | Valasaravakkam | Zone_11_Valasaravakkam | 520 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 12 | Alandhur | Zone_12_Alandhur | 521 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 12 | Division 156 Mugalivakkam | Zone_12_Division_156_Mugalivakkam | 569 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 12 | Meenambakkam - 6A Gate | Zone_12_Meenambakkam_-_6A_Gate | 660 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 13 | Adyar | Zone_13_Adyar | 522 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 13 | Adyar Eco Park | Zone_13_Adyar_Eco_Park | 505 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 13 | Unit 39 Adyar | Zone_13_Unit_39_Adyar | 610 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 14 | Perungudi | Zone_14_Perungudi | 523 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 14 | Unit office 41 Perungudi | Zone_14_Unit_office_41_Perungudi | 611 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 15 | Sholinganallur | Zone_15_Sholinganallur | 524 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-05T00:00:00 | 15 | Uthandi | Zone_15_Uthandi | 566 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-05 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-06T00:00:00 | 1 | Kathivakkam | Zone_01_Kathivakkam | 604 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-06 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-06T00:00:00 | 1 | Thiruvottiyur | Zone_01_Thiruvottiyur | 507 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-06 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-06T00:00:00 | 2 | Division 15 Manali | Zone_02_Division_15_Manali | 560 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-06 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-06T00:00:00 | 2 | Manali | Zone_02_Manali | 506 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-06 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-06T00:00:00 | 3 | Madhavaram | Zone_03_Madhavaram | 512 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-06 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-06T00:00:00 | 3 | Puzhal | Zone_03_Puzhal | 561 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-06 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-06T00:00:00 | 4 | Tondiarpet | Zone_04_Tondiarpet | 513 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-06 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-06T00:00:00 | 5 | GCC | Zone_05_GCC | 493 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-06 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-06T00:00:00 | 5 | Royapuram | Zone_05_Royapuram | 514 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-06 till 08.30 am | 8.30 to 9.30 | 1 |
2020-11-06T00:00:00 | 6 | Division 65 Kolathur | Zone_06_Division_65_Kolathur | 562 | null | null | null | 0 | -1 | -1 | -1 | 0 | 2020-11-06 till 08.30 am | 8.30 to 9.30 | 1 |
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Chennai GCC Rain Gauge Daily Panel (2020–2023)
Daily 08:30-IST rain-gauge readings for 30 gauges across 15 Greater Chennai Corporation (GCC) zones, scraped daily from the Tamil Nadu Government's Chennai Flood Decision Support System (chennaifloodsdss.in) between 2020-11-03 and 2023-12-12. The archive includes the full Cyclone Michaung event (Dec 2023) — peak 639 mm/24 h at the Meenambakkam 6A Gate gauge on 2023-12-04 — plus the Northeast monsoon burst of 2023-11-10 (370 mm at Ambattur).
GCC zone-level rain-gauge data at this granularity is not available on data.gov.in or the GCC open-data portals; this dataset was assembled by daily scraping over three northeast monsoons.
Dataset structure
| File | Rows | Description |
|---|---|---|
data/gcc_rain_gauge_panel.parquet / .csv |
34,050 | Complete grid: 30 gauges × 1,135 days (2020-11-03 → 2023-12-12) |
data/tn_rain_stations.parquet / .csv |
564 | TN-wide rain-gauge station registry: station ID, name, district/taluk, lat/lon, install date, status (snapshot 2023-12-25) |
data/chennaidss_layer_catalog.csv |
292 | Catalog of the ChennaiDSS GIS layers (names/categories only; geo payload not included in this dataset) |
originals/ChennaiRainFall.db |
5,478 | Original SQLite table (375-day subset, 2021-08-16 → 2023-12-12), as served |
originals/combined_data.json |
34,050 | Original merged JSON panel |
originals/bulletins/ |
4 PDFs | IMD/TN observed-rainfall + forecast bulletins, 01–08 Dec 2023 |
originals/scripts/ |
7 | The scraper suite (Python) that produced the archive |
Panel columns
| Column | Meaning |
|---|---|
obs_date |
Observation date parsed from the source window string (readings are the 24 h up to 08:30 IST) |
argid / zone_no / zone_name / gauge_name |
Source gauge id (Zone_12_Meenambakkam_-_6A_Gate), GCC zone number (1–15), zone name, gauge label |
deviceid |
Source device id |
rainfall, previous_rainfall, rainfall24, progressive, progressflag, obs_window_raw, lasthour_window_raw |
Values as served by the API (raw; -1 = missing sentinel) |
rainfall_mm, previous_rainfall_mm, rainfall24_mm |
Clean copies with the -1 sentinel converted to null. ~49.5% of rainfall24 readings are null — the gauge network reported sparsely outside monsoon bursts |
Known quirks
- Source timestamps are display strings (
"2023-12-10 till 08.30 am"), parsed toobs_date; sub-day timing is the fixed 08:30 IST window. - ~49.5% sentinel-missing readings; treat nulls as "no report", not zero rain.
- Gauges are zone-level devices operated by GCC/TN-DPMS; station metadata beyond the registry table is not published by the source.
- Coverage ends 2023-12-12 (scraper retired); 2024+ not collected.
Provenance & method
- Source: chennaifloodsdss.in (Chennai Flood DSS) — a Tamil Nadu government system (data inputs documented from the Institute of Water Studies, TWAD, TN Highways, PWD and partner institutes).
- Collection: daily automated GET requests (one snapshot per day per district endpoint), merged verbatim into the panel. Not an official bulk download.
- The archive this dataset derives from was lifted and verified on 2026-09-28; parquet built with pandas/pyarrow from the original JSON, with invariants asserted (complete 1,135 × 30 grid, sha-matched originals).
Licensing and use
- The source system posts no explicit license. Data is published here as Tamil Nadu government public data with full attribution, for research and public-interest use, no warranty, and a takedown clause: if the data steward objects, open an issue or contact the dataset owner and the content will be removed.
- IMD bulletins in
originals/bulletins/are Government of India (MoES) publications; reproduced with attribution. - If you use this dataset, cite the source system (Chennai Flood DSS, Government of Tamil Nadu) and this dataset.
Citation
@dataset{chennai_rain_gauges_2026,
title = {Chennai GCC Rain Gauge Daily Panel (2020-2023, incl. Cyclone Michaung)},
author = {CashlessConsumer},
year = {2026},
url = {https://huggingface.co/datasets/cashlessconsumer/chennai-rain-gauges},
note = {Scraped from chennaifloodsdss.in, Government of Tamil Nadu}
}
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