Dear Jennifer: In the city of Pasadena, Texas, near where I live, the newest in the curb storm gutters have a vertical grate every 6 inches or so that blocks debris (and people) from entering. Somebody out there is making that possible and I think it would be a reasonable request to have those installed. Educating your children and other mothers is your very first line of defense in any safety situation. No one should EVER venture into flood waters, no matter how apparently shallow. No one should ever walk on top of manhole covers. Two eyes on children at all times, even in deceptively safe areas like playground is absolutely necessary. Think of it like driving. I haven't found much on the web either. Occasional news stories, even though this is a problem, is about all we get. If anyone finds anything to share, please add your comments to this post!