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(click here) CERCH – Center for Environmental Research and Children's Health. Philadelphia Water Department. What is a Watershed?
A watershed is an area of land within which water from rain or snow drains into a body of water, such as a river, lake or ocean. Philadelphia is part of the Delaware River Watershed.
Trees. Science & Social Studies Curriculum. This download (a $19.95 value) is available for free thanks to generous contributions from the following funders: Crosby Philanthropy Fund, Johnson Family Foundation, Lawson Valentine Foundation, Martin-Fabert Foundation, Singing Field Foundation, The Story of Stuff Project - a project of the Tides Center, Wallace Global Fund, Weeden Foundation.
Thank you! Your support will empower thousands of students in all types of schools and communities across the United States to build a more sustainable future.
Ecosystems. Oil Spill. Conservation. Pollution. Gyres. Water Cycle. Make a topographic map! Make a topographic map!
Build your own mountain and make a topo map of it! A topographic map, or "topo map," is a way to show mountains and valleys on a flat piece of paper. Topo maps are handy and necessary for many uses, including building roads and hiking trails in the mountains. The map shows where the hills and valleys are and how steep they are.