In May of 2024 increased the flow of the Rimac and Chillon Rivers

The National Institute of Statistics and Informatics (INEI) informed that according to information provided by the National Service of Meteorology and Hydrology (SENAMHI), during the month of May of 2024, the flow of the Rimac River reached 24,03 m3/s, which represented an increase of 32.5% compared to the same month of the last year; nevertheless, it decreased by 7.9% compared to its historic average.

In the technical report Environmental Statistics is stated that the Flow of the Chillon River reached 2.44 m3/s, a higher figure in 11.4% compared to May of 2023; while, it was lower by 29.5% compared to its historic average.

During the month of May of 2024 and according to the information provided by the National Service of Potable Water and Sewerage Service of Lima (SEDAPAL), the production of potable water in Lima Metropolitan area reached 68 million 319 thousand cubic meters, similar quantity to the registered in the same month of 2023 (68 million 319 thousand m3).

During May of the current year the rivers of the north zone of the Pacific watershed registered a decrease in their flow; therefore, the Tumbes River reached 146,65 m3/s, less in 50.1% compared to the same month of 2023; nevertheless, it was higher in 7.0% compared to its historic average. Meanwhile, the flow of the Chira River (59,25 m3/s) reduced in 25.9% and 55.9% compared to the fifth month of 2023 and to its historic average.

For its part, the flow of the Calvas river (28.71 m3/s) reduced in 12.3% and 42.0% compared to May of 2023 and to its historic average, respectively; and the flow of Jequetepeque River (20.74 m3/s) decreased in 33.1% and 27.0% compared to the month of May of the last year and to its historic average, respectively.

During the month of May of the current year, according to the SENAMHI, the average of the rainfalls registered in the center zone of the Pacific Ocean watershed in the Matucana station was of 0.00 millimeters, which meant a decrease of 100% compared to its historic average and to the registered in the same month of 2023.

During the fifth month of 2024 and according to the monitoring of the 17 SENAMHI stations, the lowest temperatures were reported in the departments of Puno and Arequipa. The stations that registered greater intensity of frosts: in Puno, the stations of Mazo Cruz (-19.4 °C), Desaguadero (-12.4 °C), Cojata (-10.7 °C), Macusani (-10.0 °C), Santa Rosa (-9.4 °C), Crucero Alto (-8.8°C) and Ananea (-8.2 °C). In Arequipa, the stations of Tisco (-14.2°C), Pillones (-13.2 °C), Imata (-12.4 °C) and Salinas (-9.0°C).

Low temperatures were also reported in the stations of Bocatoma (-14.0 °C) and Chuapalca (-11.5°C) and in the department of Tacna; the stations of Laive (-8.9°C) and La Oroya (-3.6°C) in Junín; and the stations of Cerro de Pasco (-1.6°C) and Ubinas (-0.8°C), in the departments of Pasco and Moquegua, respectively.

During May of 2024 and according to the data provided by the National Institute of Civil Defense (INDECI), were reported 360 emergencies at national level, a lower figure in 30.0% compared to the same month of 2023. The emergencies left 2,475 affected people, 4,629 affected households, 169 households destroyed and 78 hectares of crops lost.

The greater number of emergencies were reported in the departments of : Cajamarca and Huancavelica (65 each one), Cusco (31), Piura (27), Apurímac (24), Ayacucho (21), Huánuco (18), Amazonas and Ancash (12 each one), La Libertad and Lima Province (10 each one), Junín and Lima Metropolitan area (9 each one), Pasco and San Martín (8 each one), Loreto (7), Lambayeque (5), Arequipa and Callao (4 each one), Ica and Tacna (3 each one), Puno and Ucayali (2 each one), Madre de Dios (1) and emergencies were not recorded in Moquegua and Tumbes.

The emergencies were caused mainly by: heavy rains (177), urban fires (74), landslide (22), strong winds (18), collapsing of households (14), storms (winds with rainfalls) (13), hills collapse (9), earthquakes (8), explosions (4), frosts and forest fires (3 in each one), hailstorms, huaicos (landslides) and collapse of general structure (2 in each one) and decrease of temperature, flood by rivers overflow, flood due to overflow in the levee breach, snowfalls, pests, lack of water, deflagration, DSNPP Potentially dangerous hydrocarbons and flood due to channels overflow (1 in each one).