Data DevelopmentData Development

Common Issues for Common Issues for

UPLAN and I-PLACE3SUPLAN and I-PLACE3S

Land UsesLand Uses

►Choose CarefullyChoose Carefully Residential:Residential:

►How many residential categories?How many residential categories?►What ranges?What ranges?

Employment:Employment:►General Plans vs. Transportation ModelsGeneral Plans vs. Transportation Models

►How many categories do you need?How many categories do you need?►How many categories can you How many categories can you

effectively model?effectively model?

General PlansGeneral Plans

► Combine/Convert Existing General PlansCombine/Convert Existing General Plans Obtain GIS versions of general plansObtain GIS versions of general plans Catalog the classes in these plansCatalog the classes in these plans Group the classes to match your model classesGroup the classes to match your model classes Combine the general plans to create a regional Combine the general plans to create a regional

general plan containing the model classes you’ve general plan containing the model classes you’ve identifiedidentified

► Aggregation of General Plan ClassesAggregation of General Plan Classes Don’t try to maintain more complexity than can be Don’t try to maintain more complexity than can be

modeled with your UPlan classesmodeled with your UPlan classes I-PLACE3S development types will encompass I-PLACE3S development types will encompass

more detail than general plansmore detail than general plans

Population ProjectionsPopulation Projections

►California Department of FinanceCalifornia Department of Finance Official California population projections Official California population projections

and past trendsand past trends http://www.dof.ca.gov/HTML/DEMOGRAP/Rhttp://www.dof.ca.gov/HTML/DEMOGRAP/R

eportsPapers/ReportsPapers.phpeportsPapers/ReportsPapers.php

►Local Population ProjectionsLocal Population Projections Transportation ModelsTransportation Models Other sources?Other sources?

Residential Inventory and Residential Inventory and TrendsTrends

► This is probably the single most challenging data This is probably the single most challenging data collection element!collection element!

► How many units have been built into each How many units have been built into each residential class in the recent past?residential class in the recent past? Building PermitsBuilding Permits Parcel AnalysisParcel Analysis Expert Opinion/Educated GuessExpert Opinion/Educated Guess

► Dependent on the availability of dataDependent on the availability of data► Calculate the Percentage of new household Calculate the Percentage of new household

development in each classdevelopment in each class► Calculate the average gross lot size or density for Calculate the average gross lot size or density for

each classeach class

Employment Inventory and Employment Inventory and TrendsTrends

► How many employees are currently in each How many employees are currently in each employment type?employment type?

► Will this remain constant?Will this remain constant?► Data sources:Data sources:

InfoUSA (a commercial product)InfoUSA (a commercial product) California Employment Development DepartmentCalifornia Employment Development Department US Census BureauUS Census Bureau Transportation ModelTransportation Model

► Calculate percentages of new jobs in each classCalculate percentages of new jobs in each class► Identify locally appropriate square footages per Identify locally appropriate square footages per

employee and floor area ratiosemployee and floor area ratios Planning DepartmentPlanning Department

Where to Get Spatial DataWhere to Get Spatial Data

► Local/CountyLocal/County Assessor’s office - (parcels, existing use)Assessor’s office - (parcels, existing use) Public Works - (transportation infrastructure) Public Works - (transportation infrastructure) Planning Department - (general plans, allowed Planning Department - (general plans, allowed

use, existing use, housing inventories)use, existing use, housing inventories) Water Agency – (sewer connectivity, water Water Agency – (sewer connectivity, water

supplies)supplies) Safety/Health Departments – (hazards, septic Safety/Health Departments – (hazards, septic

system suitability, EMS service areas)system suitability, EMS service areas)

Where to Get Spatial DataWhere to Get Spatial Data

► StateState California Spatial Information Library (CaSIL)California Spatial Information Library (CaSIL)

►http://http://gis.ca.govgis.ca.gov

CalTrans – (infrastructure)CalTrans – (infrastructure) Department of Fish & Game - (environmental Department of Fish & Game - (environmental

layers)layers) CalFire (FRAP) - (environmental layers)CalFire (FRAP) - (environmental layers)

►http://http://frap.cdf.ca.gov/data/frapgisdata/select.aspfrap.cdf.ca.gov/data/frapgisdata/select.asp

Office of Emergency Services – (dam failure Office of Emergency Services – (dam failure inundation zones, hazards)inundation zones, hazards)

Where to Get Spatial DataWhere to Get Spatial Data

► FederalFederal US Census Bureau – (housing units, employment, US Census Bureau – (housing units, employment,

household data)household data) US Geological Survey – (environmental layers)US Geological Survey – (environmental layers) US Fish and Wildlife Service – (environmental US Fish and Wildlife Service – (environmental

layers)layers) Bureau of Land Management – (environmental Bureau of Land Management – (environmental

layers, boundary layers)layers, boundary layers) Bureau of Reclamation – (dam failure inundation Bureau of Reclamation – (dam failure inundation

zones, environmental layers, boundary layers)zones, environmental layers, boundary layers)

Where to Get Spatial DataWhere to Get Spatial Data

►CommercialCommercial TeleAtlas: RoadsTeleAtlas: Roads ESRI: Roads, CensusESRI: Roads, Census Other Redistributors of census data Other Redistributors of census data

(GeoLytics)(GeoLytics) Employment data (InfoUSA)Employment data (InfoUSA)

Preparing Spatial DataPreparing Spatial Data

► GIS if availableGIS if available► Digitizing Digitizing

In-houseIn-house► Scanning (if paper)Scanning (if paper)► RegisteringRegistering► TracingTracing► Seek some trainingSeek some training

ContractContract► CreatingCreating

Digitize on ImageryDigitize on Imagery GPSGPS

► RasterizationRasterization Convert for use in UPlanConvert for use in UPlan

► Consider the needsConsider the needs Is it good enough?Is it good enough? Is it more detailed than Is it more detailed than

needed?needed? Is there as suitable Is there as suitable

alternative?alternative?