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Caption: Water quality parameters were measured by Point Reyes National Seashore in small tributaries of Lagunitas Creek, as well as a large tributary, Olema Creek and tributaries on the Point Reyes peninsula flowing into Drakes Bay, Drakes Estero and the Pacific Ocean from 1999-2001. The graph shows ammonia concentrations for tributaries of Drakes Bay. There were two toxic un-ionized ammonia events (>0.025 mg/L) for DBY2 and DBY3. See Map for water quality stations and Info Links for more information.
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