Here the boardwalk crosses over the Yellow Branch, a small stream whose flow originates from Ladew’s quarry pond and from a spring just west of the Jarrettsville Pike. It is important for these little streams to be clean and healthy as they drain into large water systems. This same water will flow into the Little Gunpowder River, then the Bird River and finally, the Chesapeake Bay.
One indicator of a healthy water system is the presence of certain aquatic insect larvae, such as those of the mayfly and caddisfly. These larvae live on the underside of rocks in the stream channel. As the stream bed dries in the summer, it leaves wet pools that are habitat for crayfish, minnows and green frogs.
View a map of the Nature Walk