This article describes some of the drownings and causes. Among them, the canal can be more treacherous than expected, the canal is isolated against the fence. More water is being released now after snowmelt is known.

Drownings in West Texas canals spiked in the past month. Authorities fear migrants are dying while crossing into the US | CNN

Natividad Quinto Crisóstomo was dreaming of reuniting with her husband in Arkansas when she died in an irrigation canal near the United States-Mexico border fence.

CNN