During the month of November of 2023 the Rimac river flow decreases

The National Institute of Statistics and Informatics (INEI) informed that during the month of November of 2023 and according to the information provided by the National Service of Meteorology and Hydrology (SENAMHI), the average flow of the Rimac River reached 19.10 m3/s a lower result in 7.2% and -18.8% compared with the same month of 2022 and to its historic average, respectively.

In the technical report Environmental Statistics indicates also that the average flow of the Chillon River reached 2.94 m3/s, a higher figure in 114.6% compared to the month of November of 2022; nevertheless, it decreased 12.8% compared to its historic average.

During the month of November of 2023 and according to the data provided by the National Service of Potable Water and Sewerage Service of Lima (SEDAPAL), the production of potable water in Lima Metropolitan area reached 64 million 922 thousand cubic meters (m3), a higher figure in 2.2% compared to the registered in the same month of 2022 (63 million 548 thousand cubic meters).

During the month of November of the current year, the rivers of the center zone of the Pacific watershed reported an increase in their river flows. Therefore, the Chancay-Huaral river flow totalized 13.64 m3/s which represented an increase of 126.2% and 84.8% compared to the same month of the last year and to its historic average, respectively. On the other hand, the Mala river flow reached 7.27 m3/s, a higher quantity in 510.9% and 53.4% compared with the month of November of 2022 and to its historic average.

During the month under analysis and according with the SENAMHI information, the average of rainfalls registered in the northern zone of the Pacific watershed increased; thereof in the Ayabaca station the average of these reached 66.10 mm, a higher quantity in 696.4% and 15.4% compared to the same month of the last year and to its historic average.

Meanwhile, in the Llapa station the rainfalls reached an average of 95.40 mm, which meant a growth of 1,107.6% and 39.5% compared to the registered in November of 2022 and to the historic average. Likewise, in the Santa Cruz station (69.50 mm) the rainfalls increased by 1,595.1% and 26.8% compared to the percentage reached in November 2022 and to its historic average. Meanwhile, in the La Cruz station the rainfalls reached 0,50 mm, which meant a reduction of 54.5% compared to its historic average.

During the month of November of 2023 and according to the monitoring of 15 SENAMHI stations, the departments of Arequipa, Tacna and Puno registered a greater number of days with frosts.

The stations with greater number of days with meteorological frosts were: Porpera (30 days), Bocatoma (29 days), Tisco (28 days), Imata (24 days), Pillones (23 days), Las Salinas and Crucero Alto (22 days in each one), Mazo Cruz and Macusani (21 days in each one), Capazo and Santa Lucia (18 days in each one), Vilacota (14 days), Desaguadero and Pampahuta (13 days in each one) and Caylloma (12 days).

During the month of November and according to the information of the National Institute of Civil Defense (INDECI), at national level were registered 438 emergencies, a lower figure in 21.6% compared to the month of November of 2022. The emergencies left 1,447 affected people, 2,272 affected household, 118 destroyed households and 1,860 hectares of crops destroyed.

The greater number of emergencies were registered in the departments of: Huancavelica (54), Cajamarca (44) Apurímac (36), Cusco (35), Ayacucho (32) San Martin (25), Ucayali (24), Piura (21), Amazonas (20), Lima and Pasco (19 in each one), Puno (16), Ancash and Junín (15 in each one), Huánuco and Loreto (14 in each one), Ica (8), Tumbes (6), La Libertad and Madre de Dios (5 in each one), Arequipa, Lambayeque and Tacna (3 in each one), and the Constitutional Province of Callao (2) while in Moquegua were registered any emergency.

The emergencies were caused mainly due to urban fires (131), heavy rains (84), strong winds (81), temporal (winds with rains) (57), hailstorms (20), water deficit (17), forest fires (16), floods due to channels overflow (6), electric storms and collapsing of households (5 in each case), landslide(4), huaycos (3), hills collapse and collapse due to antiquity (2 in each case), decrease of temperature, frosts, flood due to rivers overflow, accident of inland transportation and flood due to broken levee overflow (1 in each case).