ACAPULCO, Mexico — Authorities in southern Mexico were still assessing damage and watching rising rivers Friday as rain from the remnants of Hurricane Erick doused the region.

Torrential rains over steep coastal mountains and the landslides and flooding they could generate became the ongoing concern for officials after Erick dissipated following a landfall early Thursday on a sparsely populated stretch of coast.

The storm’s death toll remained at one Friday, a 1-year-old boy who drowned in a swollen river, President Claudia Sheinbaum said. She also said she planned to visit the affected region Friday.

Power had been restored to about half the 277,000 customers who lost it and soldiers, marines and National Guard were helping to remove debris and reopen roads in Guerrero and Oaxaca state where Erick passed.

Erick came ashore down southern Mexico’s Pacific coast in the morning as a Category 3 major hurricane, but it landed between the resort cities of Acapulco and Puerto Escondido. It dissipated Thursday night.

Authorities reported landslides, blocked highways, downed power lines and some flooding as coastal residents, above all in Acapulco, took the storm seriously.

Category 4 strength

Erick had strengthened to a Category 4 storm as it approached the coast but weakened before making landfall to a Category 3.

Having doubled in strength in less than a day, Erick churned through an ideal environment for quick intensification. Last year, there were 34 incidents of rapid intensification — when a storm gains at least 35 mph in 24 hours — which is about twice the average and causes problems with forecasting, according to the hurricane center.

One death reported

Authorities had warned the heavy rain would become the problem. On Friday, National Civil Defense Coordinator Laura Velázquez said a river in Juchitan, Oaxaca had spilled over its banks and some families had moved to shelter.

Forecasters had expected up to 16 inches of rain could fall across Oaxaca and Guerrero, with lesser totals in Chiapas, Michoacan, Colima and Jalisco states. The rainfall threatened flooding and mudslides, especially in areas with steep terrain.

Late Thursday, Guerrero state Civil Defense Director Roberto Arroyo said that a 1-year-old boy had died in San Marcos, an inland community southeast of Acapulco in the path of Erick. The child’s mother had tried to cross a swollen river while carrying the child, but he slipped from her arms and drowned.

Still scarred by Otis

Restaurants, shops and supermarkets gradually reopened in Acapulco, but schools were to remain closed across Guerrero on Friday as authorities continued to assess damage, clear debris and monitor rising rivers.

On Friday, the port was cloudy, but the rain had stopped.

Acapulco residents had braced for Erick’s arrival with more preparation and trepidation because of the memory of the devastation two years earlier.