Small Tributaries Loading Study

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Small Tributaries Loading Study Zone 4 Line A
Sources Pathways and Loadings Workgroup May 2008
Lester McKee1, Alicia Gilbreath1, John Oram1,
Michelle Lent1 and Rand Eads2
1. San Francisco Estuary Institute 2.
Rivermetrics
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• 4.5 km2 area
• 1.7 km upstream of the bay
• Above the tidal influence
• Engineered urban channel

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• 38 industrial 33 residential
• 26 commercial 2 open
• 4 km of rail bed
• Large impervious surfaces

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Instrumentation

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Field Methods
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Velocity Measurements and Discharge Rating Curve
Max stage 0.92 m Max Q 8.7 cms
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2007 Hydrology at Z4LA
21 storm events cumulative rainfall 270 mm
(10.6 in)
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Reporting progress
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• Draft report 2/3 written
• Anticipate completion in the next 1 week
• Internal review (1 week)
• Email out for WG review in 2-3 weeks.