Bolton Potholes

The father of a 12-year-old Vermont boy who drowned at a swimming hole last year is starting a campaign to help swimmers take precautions.

Bentley Seifer drowned while swimming at the Bolton potholes in July 2011.

His father, Bruce Seifer, tells the Burlington Free Press he's assembled a legal team, mapped out the sites of recent drownings and started meeting with state officials.

He's interested in putting out public messages about when certain swimming areas are particularly dangerous.