"FOUR POINTS" (MARYLAND'S DIVERSITY) "NATURE'S COURSE" (STREAMS) In this episode of "Outdoors Maryland," the diversity of Maryland's land is explored through the northern valley, the eastern ocean, the southern bay, and the western mountains. The quality of water of Maryland's streams is also explored; how it is filtered, what underground streams are, and how what flows through storm drains flow into the Chesapeake Bay.