A photo of iron staining in a small tributary to the Dell Pond. The iron is the orange and burnt red color seen running diagonally across the picture. This picture was taken during pond construction.

Iron Staining in a Meadow Creek Tributary after the completion of Dell Construction .

No, this isn't toxic sludge, it's iron staining. This particular iron is coming from fill material near North Grounds Recreation Center. A slight sheen can be seen on the water, which, in addition to the orange and red colors, is also characteristic of iron staining.