Resources available here include the spreadsheets, maps, GIS layers, subbasin planning modeling input and results, tools, and databases developed for subbasin planning.


The Northwest Power and Conservation Council (NPCC; formerly the Northwest Power Planning Council) led the 2001-2004 effort to develop comprehensive subbasin plans throughout the Columbia River basin. StreamNet both provided data to support subbasin planning and also received and distributes compilations of the data used in the plans. 

At the beginning of the subbasin planning effort StreamNet created spreadsheets of pre-existing data for each subbasin, GIS layers, and maps. (The spreadsheets, originally done in 2001, were updated in February 2003 and are available below.)


After the plans were completed, StreamNet, the Technical Outreach and Assistance to Subbasins Team (TOAST), the Columbia River InterTribal Fish Commission (CRITFC), and the Northwest Habitat Institute captured new data that were developed for use in the aquatic portion of each subbasin plan. Resources available here include the spreadsheets, maps, GIS layers, subbasin planning modeling input and results, tools, and databases developed for subbasin planning. Included is a large majority of the EDT and QHA modeling information used in subbasin planning. Also provided here are GIS layers that define the EDT/QHA reach codes.


Before using the subbasin plan and archived data sets listed below, we recommend reviewing the README file for a summary of the data that are available, a description of the StreamNet Data Types, and a Watersheds Modeled Spreadsheet detailing the modeling products that are available for each subbasin.


Data Available on this Page

StreamNet data and other archived datasets:

Each subbasin spreadsheet contains 16 separate pages, including introductory explanations, data of many types, and a table of literature relevant to the subbasin. Not all data types are available for every subbasin. For a quick overview of the types of StreamNet data available for each subbasin, download the data inventory by subbasin spreadsheet. 


Products prepared by TOAST/CRITFC:

Data available for a subbasin can vary because planners were given a choice of models and not all used EDT or QHA. Also, some data were not available from the subbasin planning process when this archive was created. In addition to subbasin-specific products, TOAST/CRITFC also constructed databases of fish populations from the EDT information provided by Mobrand Biometrics, Inc. 


Northwest Habitat Institute:

Collected from subbasin planners wildlife data, upland habitat data, and GIS layers used to produce maps for the plans


Electronic copies of the 2004 subbasin plans

Electronic copies of the 1990 subbasin plans 



Subbasin Planning Data:

Data are presented by subbasin. Select a subbasin from the list below or the subbasins map. Materials provided to subbasin planners are found under “StreamNet_Info”, while materials produced during or after subbasin planning are found under “SubPlanning_Info.” In addition to the subbasin-specific data sets, several basin-wide datasets are also available:


Master spreadsheet created June 25, 2001 contains data for all subbasins combined.

Master spreadsheet – updated February 8, 2003 contains data for all subbasins combined.

Water temperature data Compilation of water temperature information across the Basin. 

Protected Areas Waters protected from further hydropower development by the NPPC.

Smolt Density Model From 1995 publication of calculated smolt densities.


Tools for Viewing Subbasin Planning Data:

ArcExplorer Instructions and executables for installing this free software published by ESRI. ArcExplorer may be used to view the GIS data presented here for all Oregon subbasins.

Fish Model Tools Instructions and Microsoft Access database ‘templates’ that can be downloaded for viewing EDT Stream Reach Editor (SRE) data and reports, and TOAST’s version of an unpopulated QHA spreadsheet tool.

Terraserver Instructions on how to use the TerraServer Map Service with GIS software to view USGS 1:24,000 quadrangle maps in combination with subbasin data.


Planning Data by Subbasin, Organized by Columbia Basin Province

Blue Mountain ProvinceColumbia Cascade Province

Asotin Subbasin

Grande Ronde Subbasin

Imnaha Subbasin

Snake Hells Canyon Subbasin

Columbia Upper Middle Subbasin

Entiat Subbasin

Lake Chelan Subbasin

Methow Subbasin

Okanogan Subbasin

Wenatchee Subbasin


Columbia Gorge ProvinceColumbia Plateau Province

Big White Salmon Subbasin

Columbia Gorge Subbasin

Fifteenmile Subbasin

Hood Subbasin

Klickitat Subbasin

Little White Salmon Subbasin

Wind Subbasin

Columbia Lower Middle Subbasin

Crab Subbasin

Deschutes Subbasin

John Day Subbasin

Palouse Subbasin

Snake Lower Subbasin

Tucannon Subbasin

Umatilla Subbasin

Walla Walla Subbasin

Yakima Subbasin


Columbia River Estuary Province

Intermountain Province

Columbia Estuary Subbasin

Elochoman Subbasin

Grays Subbasin

Coeur d’Alene Subbasin

Columbia Upper Subbasin

Lake Rufus Woods Subbasin

Pend Oreille Subbasin

San Poil Subbasin

Spokane Subbasin


Lower Columbia ProvinceMiddle Snake Province
Columbia Lower Subbasin

Cowlitz Subbasin

Kalama Subbasin

Lewis Subbasin

Sandy Subbasin

Washougal Subbasin

Willamette Subbasin

Boise Subbasin

Bruneau Subbasin

Burnt Subbasin

Malheur Subbasin

Owyhee Subbasin

Payette Subbasin

Powder Subbasin

Snake Lower Middle Subbasin

Snake Upper Middle Subbasin

Weiser Subbasin


Mountain Columbia ProvinceMountain Snake Province

Bitterroot Subbasin

Blackfoot Subbasin

Clark Fork Subbasin

Flathead Subbasin

Kootenai Subbasin


Clearwater Subbasin

Salmon Subbasin

Upper Snake Province 
Snake Headwaters Subbasin

Snake Upper Subbasin

Snake Upper Closed Basin Subbasin