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Data Development

Explore data collection tips and sources for residential and employment categories, population projections, transportation models, and more to enhance urban planning projects effectively.

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Data Development

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  1. Data Development Common Issues for UPLAN and I-PLACE3S

  2. Land Uses • Choose Carefully • Residential: • How many residential categories? • What ranges? • Employment: • General Plans vs. Transportation Models • How many categories do you need? • How many categories can you effectively model?

  3. General Plans • Combine/Convert Existing General Plans • Obtain GIS versions of general plans • Catalog the classes in these plans • Group the classes to match your model classes • Combine the general plans to create a regional general plan containing the model classes you’ve identified • Aggregation of General Plan Classes • Don’t try to maintain more complexity than can be modeled with your UPlan classes • I-PLACE3S development types will encompass more detail than general plans

  4. Population Projections • California Department of Finance • Official California population projections and past trends • http://www.dof.ca.gov/HTML/DEMOGRAP/ReportsPapers/ReportsPapers.php • Local Population Projections • Transportation Models • Other sources?

  5. Residential Inventory and Trends • This is probably the single most challenging data collection element! • How many units have been built into each residential class in the recent past? • Building Permits • Parcel Analysis • Expert Opinion/Educated Guess • Dependent on the availability of data • Calculate the Percentage of new household development in each class • Calculate the average gross lot size or density for each class

  6. Employment Inventory and Trends • How many employees are currently in each employment type? • Will this remain constant? • Data sources: • InfoUSA (a commercial product) • California Employment Development Department • US Census Bureau • Transportation Model • Calculate percentages of new jobs in each class • Identify locally appropriate square footages per employee and floor area ratios • Planning Department

  7. Local/County Assessor’s office - (parcels, existing use) Public Works - (transportation infrastructure) Planning Department - (general plans, allowed use, existing use, housing inventories) Water Agency – (sewer connectivity, water supplies) Safety/Health Departments – (hazards, septic system suitability, EMS service areas) Where to Get Spatial Data

  8. State California Spatial Information Library (CaSIL) http://gis.ca.gov CalTrans – (infrastructure) Department of Fish & Game - (environmental layers) CalFire (FRAP) - (environmental layers) http://frap.cdf.ca.gov/data/frapgisdata/select.asp Office of Emergency Services – (dam failure inundation zones, hazards) Where to Get Spatial Data

  9. Where to Get Spatial Data • Federal • US Census Bureau – (housing units, employment, household data) • US Geological Survey – (environmental layers) • US Fish and Wildlife Service – (environmental layers) • Bureau of Land Management – (environmental layers, boundary layers) • Bureau of Reclamation – (dam failure inundation zones, environmental layers, boundary layers)

  10. Where to Get Spatial Data • Commercial • TeleAtlas: Roads • ESRI: Roads, Census • Other Redistributors of census data (GeoLytics) • Employment data (InfoUSA)

  11. GIS if available Digitizing In-house Scanning (if paper) Registering Tracing Seek some training Contract Creating Digitize on Imagery GPS Rasterization Convert for use in UPlan Consider the needs Is it good enough? Is it more detailed than needed? Is there as suitable alternative? Preparing Spatial Data

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