Mayor Kevin Faulconer’s proposal to spend significantly less clearing clogged drainage channels has raised concerns about higher flood risk in San Diego, but Faulconer’s staff says there’s no reason to worry. The city can prudently spend as much as $1.4 million less on clearing flood channels during the fiscal year that begins July 1 because staff has become more efficient at obtaining environmental permits and completing the work, said Kris McFadden, director of the city’s Transportation and Storm Water Department.