WASHINGTON — They wade across the Rio Grande with inner tubes to reach American shores.

They walk through remote areas where the temperatures reach triple digits to evade immigration officials.

Some will never make it, drowning while crossing the river or perishing while trying to keep up with smugglers who have left them behind.

But despite the dangers, the migrants continue to come. Data released on Wednesday by Customs and Border Protection show that nearly 47,000 people were either apprehended by the Border Patrol or turned themselves in to customs officers last month at ports of entry along the Southwest border after traveling from mostly Central American countries.