Terminology

•Land Useis the current use of a site or property (typically at parcel or sub-parcel level). The data are usually vector format; includes information that can’t be reliably determined from imagery; requires supplemental information about human activities; and generally offers less detail in rural areas and more detailwithin urban areas.

•Zoning means allowed use which is not always the same as the current use and may reflect historical or near-term future use. Land is not always being used the way it has been zoned.

•Plan Designation is the long-term ideal or desired future land use expressed in a comprehensive plan and intended to guide development according to adopted policy.

•Land Cover is typically a raster representation derived from remotely sensed data and offers very little detail inside urbanized areas. Generally more useful for landscape-scale analysis.

Land Use Data Requirements and Use Examples

POTENTIAL USE CASES / POTENTIAL USERS / DESCRIPTION OF USE, APPLICATION OF LAND USE DATA / ATTRIBUTION REQUIREMENTS / SPATIAL RESOLUTION / POTENTIAL DRIVERS OF REFRESH CYCLE
Natural Hazard Mitigation Plans / DLCD
Cities
Counties / 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. / 5-year NHMP update cycle
Risk Assessments / DOGAMI
DLCD / Sometimes funded by FEMA. Damage and Loss estimations at the individual building level,. Used with 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 uses—mobile homes versus stick-built homes—used in Hazus to clarify loss impacts. / Requires detailed information about each building in addition to Assessor and other.
Building class (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
Buildable Land Inventories
(aka Buildable Land Studies) / DLCD
Metro
COGs
Cities
Counties / Provides basis for determining available development capacity, need for UGB expansion. Used in conjunction with constraints data, zoning/plan designation. / Periodic Review
Transportation Modeling / ODOT
MPOs
Cities? / Used to model trip generation and attraction, housing types and employment, generally aggregated to TAZ. Used to constrain land use allocation forecasts. Zoning is sometimes used now as proxy for existing land use. / Parcel or sub-parcel Polygons
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 models. Zoning commonly used now. / Parcel or sub-parcel Polygons / 5-year permit renewal cycle
POTENTIAL USE CASES / POTENTIAL USERS / DESCRIPTION OF USE, APPLICATION OF LAND USE DATA / ATTRIBUTION REQUIREMENTS / SPATIAL RESOLUTION / POTENTIAL DRIVERS OF REFRESH CYCLE
Infrastructure Capacity Assessments / 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. / Utility Master Plans
Public Facilities Plans
Land Consumption Monitoring
Sub-building level change tracking
Conversion of industrial to commercial uses / Metro / Annual vacant land inventories dating back to the 1990’s. Very good single family data, industrial lands, and multi-family 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 usedAssessor Property Class to derive land use.
Crop Type Studies / ODA / Digitization of fields and attributing crop types from statewide imagery.Buildings/structures are not being mapped. / Crop types
Natural Resources Protection / DLCD
DSL
Cities
Counties
Metro
COGs / Provides basis for evaluating potential threats to natural areas and habitats of concern, such as wetlands, fish-bearing streams, etc. Used in conjunction with wetland inventories, other data pertaining to habitats and natural resources.
Additional Comments / DLCD / Have used farm/forest land cover data for rural areas.
Interest in land use changes in urban areas that go beyond Assessor classifications.
Need for land use data collection standards. / Land Use at the parcel level is good enough for many applications.
Additional Comments / LCOG / Historically, LCOG was able to maintain sub-parcel land use polygons as offshoot of maintaining parcel layer longer. Change in workflow. No longer able to routinely update LU polygons, need more sustainable solution. / LCOG Hierarchical coding scheme based on HUD/BPR manual, outdated, overly specific, not sustainable.
Additional Comments / Land use needsto provide transition from land cover in rural areas to land use in urban and urbanizing areas. The two should mesh in some complementary way to maximize utility and ease maintenance. / Need representation of “mixed use”. / Scale and resolution are factors in the land-use-to-land-cover continuum.
Additional Comments / Statewide address point dataset--Oregon Multidisciplinary Address Repository (OMAR)— could have future potential to include land use information and/or be related to structures data or land use data.
POTENTIAL USE CASES / POTENTIAL USERS / DESCRIPTION OF USE, APPLICATION OF LAND USE DATA / ATTRIBUTION REQUIREMENTS / SPATIAL RESOLUTION / POTENTIAL DRIVERS OF REFRESH CYCLE

1