city of san jose storm sewer master plan - innovyze jose_final.pdf · city of san jose storm sewer...

City of San Jose Storm Sewer Master Plan

Anne Symonds, PE and Mira Chokshi, PE

2016 Pacific Water Conference

AWWA Hawaii Section | HWEA | February 4, 2016

2 City of San Jose Citywide Storm Master Plan | 2016 Pacific Water Conference | AWWA Hawaii Section | HWEA

Agenda

• Introduction and Goals of the Project

• Background on the City of San Jose

• Modeling Platform

• Model Development

- Model Development Assignments

- Rain and Flow Monitoring

- Riverine Integration

- Calibration and Verification

• Development of a LOS and CIP

- Existing, Near Term and Future

• Progress and Next Steps


Introductions of Project Team

• AECOM Team:

- Anne Symonds, PM

- David Wood, PIC

- Mira Chokshi, Lead Modeler

- Sharon Tsay and Dominique Brocard, QC

• City of San Jose Team:

- Casey Hirasaki, PM

- Shelley Guo, PIC

- Rotating staff of modelers


Key Goals of the Project

• Provide Knowledge Transfer

- Split Modeling Work with City of San Jose

- Provide Training

- Provide Overall QC

• Use InfoWorks ICM to provide integrated pipe

network and riverine model with 2D capability

• Provide City with Completed Master Plan

including CIP by June 2017 (AECOM selected

in 2013)


Background on the City of San Jose

• Total area: 176.5 Square Miles

• 2010 Population: 952,562

• 1,150 miles of Storm Sewer Pipeline

• 1,500 Storm Outfalls

• Discharges to Guadalupe River and

Coyote Creek

• 80% of system constructed between

1950 and 1979

• Designed to various criteria

• Riverine System Managed by Santa

Clara Valley Water District


Modeling Platform – InfoWorks ICM

• ICM – Integrated Catchment Modeling

• Fully-dynamic state of the art

hydrologic and hydraulic (H&H) model

• Key Features:

- Import HEC-RAS channel

geometry

- Enables surface flow routing using

two-dimensional (2D) modeling

- Uses multi-core processors and

graphics processing units (GPU)

for parallel computer

- Allows multiple modelers to work

on the same model network

simultaneously


H&H Model Development Overview

• Supported rainfall and flow

data collection

• Imported pipes>=24” and

manholes from City GIS

• All major creeks and open

channels

• Developed documentation

for training City staff

• Documentation serves as

ongoing record of work

• Provided weekly informal

training Training Memo #2 Excerpt


Rainfall and Flow Monitoring

• Originally scheduled for Two

seasons, third added

• City contracted directly with

ADS

• Data reviewed and assessed

• First season calibration

completed,

• Second season calibration

underway

• Third season data collection

underway (El Nino


Spatial Variability in Observed Rainfall


Gage adjusted radar rainfall (GARR) data


Flow Monitoring Data – Quality Check

• City/AECOM team

reviewed flow data right

after storm to identify any

site issues (backwater,

failure of sensors)

• Provided feedback to ADS

to address flow meter

sensor issues

• Process improved data

quality and provided high

quality data for calibration


H&H Model Development – 24 inch and Larger Pipes

1,100 miles of storm sewer pipes

- 540 miles of storm sewer pipes

(>=24”) in H&H model

- 13,000 storm sewer manholes

- 36 Large Storage Basins

- 29 Major Pump Stations

- 180 Flap valves at Outfalls (out of

1100 Outfalls)

- 6,500 subcatchments


H&H Model Development - Used Parcel Types to

Estimate % Impervious DCIA_LU % DCIA % NDCIA

Rural Housing 11 8

Single Family>1acre 11 8

Single Family>0.23acre 15 12





Single Family<=0.06acre 35 0

Townhomes 50 10

Condominiums 68 0

Industrial 80 0

Apartments 89 0

Commercial 90 0

Mobile Home Park 17 37

Schools 35 0

Mixed Use 60 10

Water 0 0

Open Space 2 0

Parks and Fields 5 0

Freeways 90 10


H&H Model Development - Riverine Model Integration

• Gathered Creek Models from

SCVWD

• Various ages and format of

riverine models (1970-2012)

• Established most efficient way to

develop the riverine models

• When available used:

- HEC-RAS/2 model

- Geo-referenced HEC-2

- ICM to develop based on

LIDAR


H&H Model Calibration and Verification

Hydrograph and Scatter graph for Flow meter GUA_08



Hydrograph and Scatter graph for Flow meter GUA_22



Bird Pump Station Wet Well Level Verification


Model Verification for Surface Flooding

Model Results

Color Depth

2 - 6”

> 6”

http://www.mercurynews.com/portlet/article/html/imageDisplay.jsp?contentItemRelationshipId=6478430


Other Supporting Work

• Coordination with City on LID

incorporation

• Development of Land Use

Layers for Existing, Near

Term and Future Conditions

(using City’s 2040 General

Plan)

• Development of Design

Storms

• Review of Bay and River

Levels including Climate

Change Impacts


Next Steps Include:

• Having a complete calibrated model

• Establishing preliminary LOS goals

• Assessing existing, near term and future

system performance

• Setting LOS goals with stakeholders

• Developing list of system deficiencies

• Developing alternative projects to

resolve deficiencies

• Analyzing the system to develop the

most efficient CIP recommendations

• Environmental Review

Thank You

[email protected]

[email protected]

mailto:[email protected]

mailto:[email protected]


Integrated Offer

• Architecture

• Interior Design

Architecture

• Building Structures

• Communications + IT

• Mechanical, Electrical + Plumbing

• Systems Integration

• Security

• Landscape Architecture

• Master Planning + Urban Design

• Environmental + Ecological Planning

• Strategic Planning

• Economic Planning +

Real Estate

• Entertainment +

Leisure Feasibility

• Hotels + Resorts Feasibility

• Capital Facilities Planning

• Economic Development Consulting

• Renewable Energy

• Bio-energy

• Energy Efficiency + Carbon

Management

• Smart Power Distribution

• Hydropower

• Thermal Power

• Wind Power

Building Engineering Design + Planning Economics Energy

• Air Quality

• Impact Assessment + Permitting

• Environmental Health + Safety

Management

• Environmental Remediation

• Site Restoration

• Waste + Solid Waste Services

Environment

• Program Management

• Logistics Operation + Maintenance

• International Development

• Safety Management + Contracting

• Procurement Strategies

• Program Control Systems

• Risk Management

• Change + Dispute Control/Mitigation

• Cost Control + Estimating

• Web-based Project Management

Systems

• Quality Management

• Funding + Financial Solutions

• Economic Planning +

Real Estate

• Entertainment +

Leisure Feasibility

• Hotels + Resorts Feasibility

• Capital Facilities Planning

• Economic Development Consulting

• Floodplain services

• Stormwater Treatment + Disposal

• Wastewater systems

• Water quality planning

• Water resources engineering

• Water program management

• Water systems development

• Wet weather mitigation

Government Services Program + Construction Management

Transportation Water

Our services: what we do


Vision, Purpose and Core Values Our purpose: who we are

We are driven by a common purpose — to positively impact lives,

transform communities and make the world a better place.

City of San Jose

Storm Sewer Master Plan

2016 Pacific Water Conference AWWA Hawaii Section | HWEA | February 2, 2016

city of san jose storm sewer master plan - innovyze jose_final.pdf · city of san jose storm sewer...

Documents