Leona Creek (also Lion Creek; formerly Arroyo del Leon) is creek flowing out of the Oakland hills, starting near the Leona Heights Sulfur Mine, through the Mills College campus, and eventually draining into the estuary near the coliseum. As with many creeks in Oakland, the creek runs through culverts in more places than it is above ground.
The water in the upper creek has long been a gross orange color with a rotten-egg smell because of run-off from the sulfur mine. "Some neighbors describe it as the Love Canal, or the River of Tang." 1 The water is abnormally acidic, leading to high levels of iron oxides (e.g., rust) and other metals.
In the summer of 2014, there will be a cleanup and encapsulation project of the property to reduce the run-off into the creek. 1
Links and References
- Oakland's Leona Creek to lose odd orange hue after cleanup SFGate February 22, 2014