If you’ve traveled very much in the northeast corner of Iowa, you know just how beautiful the landscape is. Iowa’s Driftless Region, as the area is known, is a picturesque landscape of rolling hills, limestone bluffs and fast-running streams.

And thanks to work by farmers and others who are taking up the challenge of improving Iowa’s water quality, there’s also a whole lot more trout fishing available there these days.

This month in Family Living, our photographer Gary Fandel highlights the work that farmers and...