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The Water Bureau monitors and controls high priority invasive plant species inside the watershed based on how the species could become established in the Bull Run Watershed Management Unit and affect water-supply operations.
One such invasive plant species is reed canary grass, which inhibits egg incubation for western toads and red-legged frogs, that grows along the north bank of the upper end of Reservoir 1.
You can read more about how the Water Bureau manages invasive plants in the Bull Run by reading the Bull Run Watershed Management Unit Annual Report.