In Naucalpan, they maintain alert on the Hondo River, another dam in Naucalpan and Periférico Norte that are affected by the heavy rains.

Tropical wave number 5, as well as the low-pressure channels that are installed on the country’s coasts, have left severe damage with heavy rainfall in the Valley of Mexico. Due to the damage this Sunday, June 22, the overflow of the Los Cuartos Dam located in the municipality of Naucalpan was reported .
In the municipality of the State of Mexico, there had been previous warnings of the possible overflow of the dam or rivers that connect the entity due to garbage plugs and rising water levels with torrential rains. On this occasion, the San Rafael Chamapa dam overflowed its banks upon reaching its maximum level.
While another water channel called the Hondo River is on the verge of bursting its banks, community residents report that it has reached its maximum level.
What happened in the municipality of Naucalpan, TODAY, Sunday, June 22?
Since 3:00 p.m. this Sunday, residents in the area have been requesting assistance due to some runoff, which then increased until it overflowed and flowed like a river through the streets, between steps, and through the houses near the dam. The water can be seen rising.
Due to this overflow, disasters have been reported in some homes due to the entry and a white foam that stands out as an effect of water contaminants, according to images shared by people in this area, the rain has been strong to intense since early morning today, which helped the water run
Tremenda granizada la tarde de este domingo en San Rafael Chamapa, Naucalpan. pic.twitter.com/w7Krt1a84a
— Raúl Gutiérrez (@RaulGtzNR) June 22, 2025
In light of the disasters and flooded streets reported by residents of the state, the municipal government is urging the community to avoid crossing flooded areas or going out onto the streets unless necessary.
“Heavy rains are being reported in Naucalpan . Some streets have been affected by overflowing rivers,” reads the post shared by the Municipal Government on its X account, formerly Twitter.
They urge the public to have an emergency backpack on hand and to follow official instructions, while noting that emergency teams are working at various affected areas to expedite the flow.