Georeferenced imagery is an important data source in GIS. Not only can it be used as a background, or basemap, in many different GIS applications but it is frequently also used as an input data source for analyses such as determining presence and health of vegetation. Imagery is collected at different temporal resolutions (i.e. the time between data collected of the same area), spatial resolution (the size of the pixels in an imagery) and spectral resolution (for example, only the red/green/blue bands of the visible spectrum, but also collected using cameras that can record infrared or ultraviolet).
Imagery is stored as raster data and can be collected from various sources such as aerial photographs or satellite imagery. In Idaho, imagery is collected and provided by different agencies. For example, the National Agriculture Imagery Program (NAIP) collects statewide aerial imagery every 2-3 years. Additionally, many regional agencies such as counties and cities collect their own higher resolution imagery. Imagery such as the Esri basemap and Google, and Bing imagery is collected by other organizations and released under different user licenses.
Note that imagery is expensive to collect, and not all of the georeferenced imagery collections are freely available for public use.
GIS professionals in Idaho have easy access to the free to use current and historical imagery that they can add as basemaps to their own GIS maps and applications or use for analyses. Imagery data is easy to find, easy to use, in a predictable format, and is well documented. Idaho has easy to use tools for people to find partners to share costs for future data collection, as well as tools to find out when and where agencies have collected imagery that can be purchased.
- Identify imagery datasets, both current and historical that are publicly available and develop standards and a nomination for to get those datasets included in the Idaho Map. If needed, develop stewardship plans and data sharing agreements governing the use of those datasets.
- Foster a collaborative work environment for data producers and consumers. This includes sharing information about public and for-purchase imagery dataset, fostering partnerships, and sharing data and information where possible.
- Develop a platform where GIS professionals can find partners to cost-share upcoming imagery data purchases and to find areas where data has been collected that can be purchased.
- Keep abreast of changes in federal programs or bills that may impact the availability of imagery data in Idaho and propose actions to protect that availability in Idaho.
Idaho Department of Water Resources
- Connect to REST endpoint for Image Services from INSIDE Idaho
- Download Data thru the NRCS Geospatial Data Gateway