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Figure 2.7 <br /> California faces numerous water quality problems <br /> Klamath River <br /> temperature,sediment,nutrient and <br /> dissolved oxygen TMDLs;major tributaries <br /> also suffer from similar impairments <br /> wu <br /> Water quality hot spots <br /> Redding JI 0 Temperature and sediment <br /> Russian River Mercury and other heavy metals <br /> pathogenTMDL;major Phosphorus <br /> tributaries also suffer ❑ Pathogens and nutrients <br /> from dissolved oxygen, <br /> nitrogen,phosphorus, ❑ Sediment and nutrients <br /> sediment,temperature, Pesticides and nutrients <br /> and mercury impairments Salts <br /> Sacramento Q Nutrients <br /> ❑ Metals and salts <br /> ❑ Nitrates <br /> San Francisco Nutrients,metals,and pathogens <br /> Pesticides <br /> Salinity San Joaquin River <br /> intrusion Fresno boron,DDT,mercury, <br /> selenium,and toxapheneTMDLs, <br /> among many stressors <br /> Salinas River Santa Ana River <br /> nitrates,nutrients, salinity,heavy metals, <br /> chlorides,pathogens, and pathogens are the <br /> pesticides,and main TMDL stressors <br /> many other stressors <br /> Los Angeles River <br /> ammonia,cadmium,copper,_ 'YN <br /> lead,nutrients,pH,selenium, Colorado River region <br /> and zinc TMDLs �nO� salinity <br /> Los Angeles <br /> e O <br /> 0 mi 50 100 150 <br /> Q San Diego <br /> 0 km 80 160 240 <br /> SOURCE:Authors'calculations using data from the State Water Resources Control Board. <br /> NOTE:The map highlights only major regional problems,including those for which total maximum daily loads(TMDLs)have <br /> been set by water quality regulators. <br />