This explains how the debris basins and flood control channels manage the mud and sand that flow out of the San Gabriel mountain foothills. Los Angeles County s

This explains how the debris basins and flood control channels manage the mud and sand that flow out of the San Gabriel mountain foothills. Los Angeles County spends many millions of dollars cleaning and maintaining these structures during heavy rain years, especially after fires have burnt the hillsides. I've always felt that the people who live right up against the mountains, the people with nice expansive homes in the foothill communities, are effectively subsidized by the rest of the county. OTOH, those people pay a bigger price in terms of insurance and fire risk. Still, that foothill real estate is expensive. Maybe they should be taxed more heavily??