“GIS Strategies for the City and County of San Francisco”

“GIS Strategies for the City and

County of San Francisco”

Erich SeamonTechnology ChiefDept. of Telecom. and Information Services(415) [email protected]

Jeff JohnsonSenior GIS AnalystDept. of Public Works(415) [email protected]

Introduction

• Historical Overview of SF GIS

• CCSF Enterprise GIS Initiatives

• Spatial data distribution• Past data distribution

policies• Current data distribution

policies• Licensing Revenues• Legal Conformance• Long-term distribution

objectives• Summary and Questions

Department of Telecommunications & Information Services

Historical Overview

• CCSF has a fairly decentralized city/county model• Spatial data developed in multiple departments

independently• DPW takes lead in basemap development (1994)• City departments individually use basemap in their

own applications: pay yearly subscription fee for access

• Interaction between departments is minimal

• November 2000: Mayor makes announcement for DTIS to implement Enterprise GIS initiative.


Enterprise GIS efforts

• One primary Citywide data integrator, distributor, and entperprise application developer

• Development of a dynamic, distributed spatial data warehouse

• Implementation of web-enabled applications

• Examination of data distribution policies• Design of appropriate citywide organizational model• Bring departments together (on multiple levels)



GIS ExecutiveSteering

Committee

GIS ExecutiveSteering

Committee

DTIS GIS Manager

DTIS GIS Manager

CIOCIO

Tech. Sub-Committee

Tech. Sub-Committee

Additional Sub-Committees

Additional Sub-Committees

Management&

Oversight

Management&

OversightApplication

Development

ApplicationDevelopment

Infrastructure &

Networking

Infrastructure &

Networking

Standards &

Doc.

Standards &

Doc.Database

Management

DatabaseManagement

DTISDTIS

Board of

Supervisors

Board of

Supervisors

Officeof theMayor

Officeof theMayor

Depts.Depts.

Depts.Depts.

San Francisco’s GIS Basemap

• Primary objective was – to create a common GIS Basemap for City government

to use and;– to build additional GIS layers and applications.

• Basemap development took roughly four years to develop.– +/- 2.5 foot accuracy.– available in three file formats: AutoCAD, ArcInfo, and

ArcView; as well as TIF and MrSID image formats.

• Basemap layers are maintained and updated by DPW staff, and now distributed citywide by DTIS.

• DTIS is providing Enterprise GIS services for all of CCSF


Basemap Components


Centerlines

Blocks and Lots

Features

Orthophotos

BasemapBasemap

Spatial Data Distribution


Previous Distribution Policy

• Basemap Data Layers were available to public directly from Department of Public Works (DPW)

• DPW staff processed each request, each licensing agreement, each CD, etc. for both internal and external customers

• Result of above efforts:– DPW staff resources were not available for core duties– At that time, DPW/CCSF was unable to appropriately

market data

• DPW sought outside help to handle external requests


Current Distribution Policy

• Basemap data layers available to public via our Value-Added Resellers– Barclay Mapworks, Inc.

– Hammon, Jensen, Wallen & Associates, Inc.

– ValueCAD, Inc.

• City signed agreements with each VAR in 1998

• City receives percentage of gross licensing revenues, capped at a maximum amount

• City receives royalties on all basemap-derived products sold


Licensing Revenues

• City receives revenue from each VAR on quarterly basis, if any

• Through the VAR program: – ~ $30,000 collected since 1998– Through direct licensing by the City: over $110,000

collected since 1996 (if staff costs are subtracted, total net would be less …)

• Current revenue supplements, but clearly does not supports GIS Basemap and Library operating revenues

• City able to finance new orthophotography


Public Records Act Conformance

• CCSF has its own public records legislature– Sunshine Ordinance

• Basemap system was granted an exception to the Sunshine Ordinance

• Multiple CA govt. agencies dealing with– privacy– precedence in records act conformance– Electronic Media - AB2799


Long-term distribution objectives

• Re-evaluate current VAR policy• Possible alternatives:

– Full distribution of spatial data over the web (fits with CCSF Enterprise GIS model)

– Hybridization of VAR/free distribution approach

• Indirect benefits of full, free distribution seem to outweigh fiscal benefits with current VAR model

• Bottom line: a new method of distribution needs to be implemented, which better encourages the use of spatial data (internal to CCSF as well as to the public)


“GIS strategies for the City and County of San

Francisco”


Erich SeamonTechnology ChiefDept. of Telecom. and Information Services(415) [email protected]

Jeff JohnsonSenior GIS AnalystDept. of Public Works(415) [email protected]

www.sfgov.org

“GIS Strategies for the City and County of San Francisco”

Documents

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