Spatial Data

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Image grabbed from City of Falmouth

Spatial Data are a particularly important resource for ecosystem stewardship, and are rendered and analyzed within a Geographic Information System. Spatial Data are developed by Local, State, Tribal and Federal agencies, and are frequently improved through both field verification and improvements in Remote Sensing. Datasets generated by state and federal workgroups are often extensive, providing coverage of whole landscapes, while local and tribal data may be more accurate, as they may incorporate ground truthing. However with increased use of high resolution aerial photograph interpretation and LiDAR, this is also changing. Tracking developments in data, sharing information on the strengths and weaknesses of individual data sets, and where to find the best data for various purposes is a useful function of this platform.

A large volume of localized spatial data are available on hard-drives across the Salish Sea. This page is focused on considering the lineage and purpooses of large scale data sets that offer an inventory of features at a landscape scale (base data) that are in common circulation and define "what we know" about the landscape at a large scale and allow for large scale landscape summary and comparison.

General Notes[edit]

  • No individual agency is responsible for tracking spatial data as common property. Agencies tend to promote the own data.
  • Variation in origin results in different systems for describing shorelines, stream-lines and watershed boundaries, resulting in different lineages data, where new analyses are build on old line or polygon sets, increasing the value of the data associated with that particular lineage.

LiDAR & Topography[edit]

Shorelines[edit]


Hydrography[edit]

Streams and Rivers[edit]

A wide range of agencies and efforts have produced stream lines to describe free flowing waters of the state.

  • Washington DNR Hydro Layer
  • WDFW Fish Distribution Layer
  • SSHIAP Stream Layers
  • NHD Plus
  • County Stream Layers

Floodplains[edit]

Wetlands[edit]

Land Cover[edit]

Planning[edit]

Modeling[edit]

Significant modelling efforts produce spatial data that can then by summarized to produce spatial data.