Islais Creek is San Francisco's equivalent of the L.A. River--it's currently hidden underground. Courtesy Rosey Jencks/San Francisco Public Utilities Commission

The winter rains in the Bay Area, as usual, seem to be too much of a good thing. There’s a fair number of flooded streets and general consternation about this stuff falling from the sky. But if we thought about it differently, it might seem more like manna from heaven. I did a little calculation this morning to see what was going down the drain. Read More