What's Going on with Lake Baldwin in Arcadia" Part 2: the Plan. Plan includes installing wetland ponds and settling basins north of Baldwin Lake, along Arcadia Wash. The idea is to capture water, channel it into a natural filter, and a portion of which will find its way down to an aquifer (a layer of water-holding rock below the surface), where it is drawn and used in various ways, including drinking water.
Why are fewer migratory birds visiting Arcadia’s Baldwin Lake at the Arboretum? The lake could see great benefit from Proposition 3 and Measure W. Audobon Society birders say there used to be approximately 330 species of migratory birds landing each winter at Baldwin Lake. In recent years that number has dwindled to about 200 species, such that the lake, which is in dire need of dredging and major ecological rehabilitation, is the focus of much debate. The lake has a low algae problem in the winter, not enough oxygen, and lots of sediment. The silt and organic matter has contributed to the shallow levels.