Land Use Data Requirements and Use Case Examples USE CASE POTENTIAL DESCRIPTION OF USE CASE, APPLICATIONS OF LAND USE DATA COMMENTS ON DESIRED ATTRIBUTION COMMENTS ON DESIRED GEOMETRY AND RESOLUTION DRIVERS OF REFRESH CYCLE Natural Hazard Mitigation DLCD Cities Counties DOGAMI Need to define change in development (i.e., change and trends over time). Land use baseline to identify where structures are being developed relative to hazard areas. Longitudinal data and baseline are needed for the next State Plan in 2020. Building type, URMs, other construction types. Changes in land use, development trends. Building Footprints would be ideal 5-year NHMP update cycle Risk Assessments DOGAMI DLCD OEM Cities Counties Damage and Loss estimations at the individual building using FEMA’s Hazus risk assessment software. Integration of building footprints, address points, and Assessor data (among other sources). Hierarchical coding schemes for scaling land use data across varying levels of specificity. For example, the distinction between two forms of residential homes versus stick-built in Hazus to clarify loss impacts. Some types of risk assessments, e.g., HAZUS EQ and Flood, require detailed information about each building, more than can be gleaned from assessment records. Building (military, public owned, religious, etc.), occupancy type/land use, specific occupancy (multi-family, mobile home, etc.), year built, building material, foundation type, square footage, value, replacement cost Individual Buildings. In some if building information is not available, the assessment cannot proceed. Refresh cycle may depend in part on the specific type of hazard being assessed. Buildable Land Inventories (aka Buildable Land Studies) DLCD Metro COGs Cities Counties Provides for determining available development capacity, need for UGB expansion. Used in conjunction with constraints data, zoning/plan designation. Existing uses. Key information is buildable vs not buildable. Redevelopment analysis requires additional information. Need information about Ag uses in potential UGB expansion areas. Sub-parcel in order to identify, quantify, and spatialize partially-vacant taxlots, which are especially important. Periodic Review Transit System Planning ODOT MPOs Cities What are the land uses in proximity to transit lines or proposed transit lines. Used to establish baseline, or to plan transit system expansions.
USE CASE POTENTIAL USERS DESCRIPTION OF USE CASE, APPLICATIONS OF LAND USE DATA COMMENTS ON DESIRED ATTRIBUTION COMMENTS ON DESIRED GEOMETRY AND RESOLUTION DRIVERS OF REFRESH CYCLE Transportation Modeling ODOT MPOs Cities? Used to trip generation and attraction, housing types and employment, generally aggregated to TAZ (Transportation Analysis Zone). Also used to constrain land use allocation forecasts for future transportation network. Zoning is sometimes used now as proxy for existing land use. Surface parking is of particular interest. Need to break out different types of Institutional Land Use, and ideally to break out vacant institutional land. Some institutional uses are considered high trip generators/attractors, such as hospitals and medical centers. Ideally would include data on Floor Area Ratio (FAR). Parcel or sub-parcel Polygons. Building footprints. Points (e.g., attribute of site addresses) TSPs - Transportation System Plans RTPs - Regional Transportation Plans Stormwater Modeling Cities DEQ Often associated with Stormwater permit renewals. Provides basis for applying impervious surface factors, and for modeling runoff generation and characteristics arising from interaction with land use. Relatively general categories used in runoff models. Zoning is commonly used now. Parcel or sub-parcel Polygons. Need to also characterize ROW. 5-year permit renewal cycle Infrastructure Capacity Assessments Facilities Planning Cities Utilities Metro COGs Provides basis for quantifying existing housing units and estimating potential future housing units (and other types of users?). Used in conjunction with constraints data, zoning/plan designation. Provides basis for allocation of resources. Utility Master Plans Public Facilities Plans Land Consumption Monitoring Others? Annual vacant land inventories dating back to the 1990’s. Very good single family data, industrial lands, and data at the sub-taxlot level (drawn from Assessor’s data, imagery interpretation and field work). Maintaining reliable data on commercial uses is more problematic. Have used Assessor Property Class to derive land use. Conversion of industrial to commercial uses Sub-building level change tracking Annual update
USE CASE POTENTIAL USERS DESCRIPTION OF USE CASE, APPLICATIONS OF LAND USE DATA COMMENTS ON DESIRED ATTRIBUTION COMMENTS ON DESIRED GEOMETRY AND RESOLUTION DRIVERS OF REFRESH Forest Land Classification ODF and Counties Informs fire response. Can impact tax assessments, must be verified and publically vetted, requires public meetings. Characterizes as Ag, Grazing, or Timber. Requires some fieldwork to achieve reliable information at sub-parcel Ongoing basis, statewide by county. Takes 1-2 years to get through a county. Identification of Leaking Septic Systems DEQ Transition-zone urban/rural fringe an area of particular interest, where a lot of rural residential use is concentrated but where urban services are not provided. Size of property, age of system, year built. Location of system on property if possible. Policy Impact Assessments All of agencies Identification of landowners who could be affected or what other impacts might occur due to change in rules or new regulations, for example, stream side setbacks. Fire Risk Assessment Fire Behavior Analysis ODF Helps evaluate costs of potential losses due to wildfire, as well as costs of suppression efforts in different areas, depending on human use of the area as well as natural conditions. Privately-owned vs value of improvement and timber Public inquiries General Public Support for responding to queries pertaining to availability of land, for example, undeveloped residential land. These are inquiries made outside of a specific public process, e.g., a UGB expansion study. County assessments of prop class and improvement value sometimes lag 1 or 2 years before being updated to reflect new development. Current Planning Land Use Code Enforcement Cities Counties