. Bulletin. Science. WATER QUALITY IN THE LOS ANGELES RIVER Los Angeles River E. Coli 23 uuuu - 8000 - 6000 - Tillman Glendale 4000 - ^ WRP WRP 2000 - # â ^\y/ 0 - -1- - , 60 16 14 12 O) E 10 c: o 05 8 iâ c a) 6 o c o O 4 60 50 40 30 River Mile 20 10 Los Angeles River Ammonia Glendale WFP I 50. River Mile Fig. 3. Longitudinal mean concentrations (min,max) of nutrients and bacteria along the Los An- geles River. Arrows indicate input locations from water reclamation plants (WRP). Discussion The Los Angeles River is an effluent dominated waterbody. Nearly 70% of the volume in the Los Angeles Riv
. Bulletin. Science. WATER QUALITY IN THE LOS ANGELES RIVER Los Angeles River E. Coli 23 uuuu - 8000 - 6000 - Tillman Glendale 4000 - ^ WRP WRP 2000 - # â ^\y/ 0 - -1- - , 60 16 14 12 O) E 10 c: o 05 8 iâ c a) 6 o c o O 4 60 50 40 30 River Mile 20 10 Los Angeles River Ammonia Glendale WFP I 50. River Mile Fig. 3. Longitudinal mean concentrations (min,max) of nutrients and bacteria along the Los An- geles River. Arrows indicate input locations from water reclamation plants (WRP). Discussion The Los Angeles River is an effluent dominated waterbody. Nearly 70% of the volume in the Los Angeles River arose from WRPs tertiary-treated effluent dis- charged during this study. Although groundwater interactions exist (particularly in the Glendale Narrows and Arroyo Seco tributary), the majority of storm drain discharges are assumed to arise from urban discharges. Less than MGD of flow was measured during dry weather months at the mouth of the Los Angeles River in 1930 when the population in the county was approximately 2 million. More than 100 MGD was measured at the mouth of the river during this study when county population estimates exceeded million. Storm drain discharges are known sources of bacteria in southern California (Noble et al. 2001; Schiff 1997). The City of Los Angeles (1997) has measured. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Southern California Academy of Sciences. Los Angeles, Calif. : The Academy
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