Lost item in Lake Lewisville

A jar about the size of a basketball, tied with strings and filled with powder is lost in Lake Lewisville. It was last seen a month ago thrown from Main Street Bridge (inbetween the TOCA Soccer Center The Colony and Ollio Patisserie bakery). Anyone who is able to locate the item underwater and retrieve will be given 1500and can be negotiated for more. If you know anyone who can help, would be much appreciated if shared! Please email me if you’re able to do any of this, thank you!