Hi Jim! The water in Bluff Lake actually comes from storm water runoff from over 1,000 acres of Aurora and Denver. The water (and trash, oil, chemicals, etc) goes through the storm water pipe system and flows into one of two outfall basins at our site. The water flows through a fence (which traps most of the trash) then through our cattail marsh and finally ends up in Bluff Lake. When Bluff Lake is full, water then spills over along a spillway and flows to Sand Creek, cleanly filtered! It is a pretty amazing natural filtration system. We do a lot of school programming around this, including water testing which proves how much cleaner the lake water is than the outfall water. There is a great interpretive sign next to one of our outfalls that explains the process further. Rachel Crouch, Executive Director, Bluff Lake Nature Center
Jordan Roberts is correct
Sand Creek 😁 More at blufflake.org
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