Starting a new small tributaries loads study wy 2007 zone 4 line a progress to date
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Starting a New Small Tributaries Loads Study WY 2007: Zone 4 Line A - Progress to-date PowerPoint PPT Presentation


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San Francisco Estuary Institute. Item #6. Starting a New Small Tributaries Loads Study WY 2007: Zone 4 Line A - Progress to-date. Lester McKee and Rand Eads Sources Pathways and Loadings Workgroup November 13 th 2006. Regional. Watershed. Sewershed.

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Starting a New Small Tributaries Loads Study WY 2007: Zone 4 Line A - Progress to-date

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Starting a new small tributaries loads study wy 2007 zone 4 line a progress to date

San Francisco Estuary Institute

Item #6

Starting a New Small Tributaries Loads StudyWY 2007:Zone 4 Line A - Progress to-date

Lester McKee and Rand Eads

Sources Pathways and Loadings Workgroup

November 13th 2006


Starting a new small tributaries loads study wy 2007 zone 4 line a progress to date

Regional

Watershed

Sewershed

Spatial scales for monitoring anthropogenic influence on the earth system“spatial libra pro monitoring anthropogenic duco in orbis terrarum ratio”

  • Water and sediment production per unit area varies by orders of magnitude between watersheds of different sizes

    • Large ≈ less steep ≈ lower drainage density ≈ greater storage

    • Small ≈ high hillslope and stream gradient ≈ high drainage density ≈ less storage

  • Our studies cover the 4 main scales:

    • Large Rivers (Sacramento/ San Joaquin Rivers = 154,000 km2)

    • Small Tributaries (10s km2 - 1,660 km2)

    • Sub-watersheds / Storm drain outfalls (10s ha – few km2)

    • Urban BMPs (<1 – 10s ha)

San Francisco Estuary Institute


Contaminants are in close proximity to drainage lines

Contaminants are in Close Proximity to Drainage Lines

Ettie Street PS Sewershed

Coyote (Modern)

Coyote (Historic)

San Francisco Estuary Institute


Selection of a new location to study

San Francisco Estuary Institute

Item #6

Selection of a new location to study

  • San Lorenzo Creek at San Lorenzo (Zone 2 Line B)

  • Estudillo Canal

  • Colma Creek at South San Francisco

  • Zone 4 Line A

  • Castro Valley Creek at Hayward

  • Laurel Creek at Hillsdale

  • Wildcat Creek at Vale Road


Zone 4 line a hayward

San Francisco Estuary Institute

Item #6

Zone 4 Line A - Hayward

  • 4 km2

  • 25% industrial

  • 25% commercial

  • 50% residential

  • No upland clean sediment


What does no upland sediment supply mean

A

San Francisco Estuary Institute

Item #6

What does no upland sediment supply mean?


Time of concentration in bay area watersheds

Zone 4 Line A

(1.5 hrs)

City Block

(12 min)

Time of Concentration in Bay Area Watersheds

Guadalupe R.

(8-10 hrs)

(4 acres)

(40 acres)

(Ref: McKee et al., 2003)

San Francisco Estuary Institute


Progress to date

San Francisco Estuary Institute

Item #6

Progress to-date

  • Technical Review Committee approved the study June 27th, 2006 and subsequently approved by the Steering Committee

  • McKee and Eads completed reconnaissance August 23rd, 2006

  • Encroachment permit issued by Alameda County (assistance from Arleen Feng)

  • Equipment purchase and prefabrication completed Friday November 3rd, 2006!


Location and equipment

San Francisco Estuary Institute

Item #6

Location and Equipment


Location and equipment1

San Francisco Estuary Institute

Item #6

Location and Equipment


Location and equipment2

San Francisco Estuary Institute

Item #6

Location and Equipment


Location and equipment3

San Francisco Estuary Institute

Item #6

Location and Equipment


Location and equipment4

San Francisco Estuary Institute

Item #6

Location and Equipment


Location and equipment5

San Francisco Estuary Institute

Item #6

Location and Equipment

DTS 12 Turbidity probe


Location and equipment6

San Francisco Estuary Institute

Item #6

Location and Equipment

ISCO pumping sampler

Campbell Data

Logger


Bring on the wet season

San Francisco Estuary Institute

Item #6

Bring on the wet season!


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