SAN FRANCISCO--(BUSINESS WIRE)--Fitch Ratings has affirmed the following Los Angeles County Public Works Financing Authority, California (the authority) ratings: -- $4.5 million (Los Angeles County Flood Control District) refunding revenue bonds, series 2003A at 'AAA'; -- $12.1 million (Los Angeles County Flood Control District) revenue bonds, series 2005A at 'AAA'. In addition, Fitch has affirmed the Los Angeles County Flood Control District's (the district) implied unlimited general obligatio