ODFW- Jon Bowers (jon.k.bowers@state.or.us), Martin Hudson (hudsomgh@dfw.wa.gov and ) IDFG- Bart Butterfield (bbutterf@idfg.state.id.us)
These event tables were submitted to the StreamNet regional staff at Pacific States Marine Fisheries Commision (PSMFC) where this regional distribution coverage was created from these event tables by
David Graves (david_graves@psmfc.org)
All data is referenced to the PNW 1:100,000 River Reach Hydrography (<http://www.streamnet.org/pnwr/pnwr.home>) on the LLID-based stream routing system.
Limitations_of_Data:
Data is collected at the 1:100,000 scale and only on streams that are included in the PNW reach LLID-based routing system. Generally, this includes all named streams at the 1:100,000 scale. Smaller tributaries that are not included in this routing system are not shown in this coverage. This data represents believed instances of fish distribution and as every stream can not be sampled, this is not an all-inclusive list of fish distribution in this region. Streams included in this coverage are areas of suitable habitat currently believed to be utilized by wild, natural, and/or hatchery fish populations. This data set includes data from ODFW (in the NorthEast portion of Oregon) which was collected before 1996, when the usetype categories were not clearly defined and these usetypes may have been interpreted by the biologists in slightly different ways.
Process Descripton:
Data submitted to PSMFC as events with LLIDs, Fmeas, and Tmeas attributes to identify locations on streams. These data events were referenced to the 1:100,000 PNW reach files and an arc GIS coverage was created based on these events. Each Arc in this GIS coverage represents fish distribution.
Reviews_Applied_to_Data: Verified that all submitted events are mapped onto this coverage by comparing a list of individual mapped events in this derivative coverage to events in the submitted event tables (used the StockID field as the unique event identifier.)
Related_Spatial_and_Tabular_Data_Sets:
- StreamNet Distuse table (tabular)-- This is a tabular data set of the events that were used to create this coverage. This table is available for download from <ftp://ftp.streamnet.org/pub/streamnet/ASCII_Data/DistUse.txt.> - PNW River Reach Hydrography (spatial)-- This is the base hydrography used to map these events. This data set is available for download from <http://www.streamnet.org/pnwr/pnwrhome.html.>
Limitations_of_Data:
Data is collected at the 1:100,000 scale and only on streams that are included in the PNW reach LLID-based routing system. Generally, this includes all named streams at the 1:100,000 scale. Smaller tributaries that are not included in this routing system are not shown in this coverage. This data represents believed instances of fish distribution and as every stream can not be sampled, this is not an all-inclusive list of fish distribution in this region. Streams included in this coverage are areas of suitable habitat currently believed to be utilized by wild, natural, and/or hatchery fish populations. This data set includes data from ODFW (in the NorthEast portion of Oregon) which was collected before 1996, when the usetype categories were not clearly defined and these usetypes may have been interpreted by the biologists in slightly different ways.