SDDT

Dataset Details

Intrinsic Potential - Puget Sound (steelhead)

Last updated 12/1/2025

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About Dataset

Built using 1:100k, NHD Hydrography We developed a reach level intrinsic potential (IP) analysis for application to steelhead spawning reaches for assessing habitat quality within currently and historically occupied portions of the Puget Sound steelhead DPS. This approach enabled us to formulate a baseline perspective from which we could assess contemporary changes to productivity. Utilizing established relationships between habitat type, stream structure, landscape processes, and spawning use, we built a locally adapted Geographic Information System (GIS) based model. The GIS was used for the development, presentation, management and modeling of spatially referenced data. Geomorphological characteristics were assigned to unique categories of gradient and width and these classes were given IP scores that reflect relative steelhead spawning preferences based on observed densities within those habitat characteristics. Additionally, we identified natural stream blockages and scored reaches above waterfalls, cascades, and DEM calculated gradients with zero spawning potential.

Ecosystem:

Freshwater Riverscape

Date Ranges:

9/28/2025 - 9/28/2025

Species:

Steelhead

ESU/DPS:

Steelhead Salmon (Puget Sound)

Population:

Steelhead (Puget Sound) - Baker River; Steelhead (Puget Sound) - Canyon Creek; Steelhead (Puget Sound) - Deer Creek; Steelhead (Puget Sound) - Drayton Harbor; Steelhead (Puget Sound) - Nookachamps Creek; Steelhead (Puget Sound) - Nooksack River; Steelhead (Puget Sound) - North Fork Skykomish River; Steelhead (Puget Sound) - Pilchuck River; Steelhead (Puget Sound) - Samish River/Bellingham Bay Tributaries; Steelhead (Puget Sound) - Sauk River; Steelhead (Puget Sound) - Skagit River; Steelhead (Puget Sound) - Snohomish/Skykomish River; Steelhead (Puget Sound) - Snoqualmie River; Steelhead (Puget Sound) - South Fork Nooksack River; Steelhead (Puget Sound) - South Fork Skykomish River; Steelhead (Puget Sound) - South Fork Stillaguamish River; Steelhead (Puget Sound) - Stillaguamish River; Steelhead (Puget Sound) - Tolt River; Steelhead (Puget Sound) - Dungeness River; Steelhead (Puget Sound) - East Hood Canal; Steelhead (Puget Sound) - Eastside Hood Canal Tributaries; Steelhead (Puget Sound) - Elwha River; Steelhead (Puget Sound) - Sequim/Discovery Bay Tributaries; Steelhead (Puget Sound) - Skokomish River; Steelhead (Puget Sound) - South Hood Canal; Steelhead (Puget Sound) - Strait of Juan de Fuca Independents; Steelhead (Puget Sound) - Westside Hood Canal Tributaries; Steelhead (Puget Sound) - White River; Steelhead (Puget Sound) - Cedar River; Steelhead (Puget Sound) - Deschutes River; Steelhead (Puget Sound) - Eastside Kitsap Peninsula Tributaries; Steelhead (Puget Sound) - Green River; Steelhead (Puget Sound) - Nisqually River; Steelhead (Puget Sound) - North Lake Washington Tributaries; Steelhead (Puget Sound) - Puyallup River; Steelhead (Puget Sound) - South Sound Tributaries

Study Plan URL:

Project:

PSTRT

Content Type:

Spatial

Data Collection Frequency:

Not a Time Series

Season:

Not Applicable

Fishery Management Area:

Acknowledgement:

NOAA - Fisheries, Puget Sound Technical Recovery Team, Jim Myers et al.

Published Date

2025

Version

Access and Use

Non-sensitive Data

Download

Contacts

Damon Holzer

Tags

steelheadSalish SeaIntrinsic potentialIPPuget Soundsummer-runwinter-runspatial

More Information

Source Type	Description	Upload Date	Data File/Connection	EditDelete
File	This compressed file contains a shapefile describing intrinsic potential habitat for listed steelhead within the Puget Sound DPS	9/29/2025

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Coverage Areas (1 visible)

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Coverage Areas (1)

Area 1 (Puget Sound Basin)

North: 48.877361

South: 46.828254

East: -121.723022

West: -123.711548

Center: (47.852808, -122.717285)

Dataset Name:

Intrinsic Potential - Puget Sound (steelhead)

Min Date:

9/28/2025

Contact Organization:

NOAA Fisheries

Location of dataset (URL):

Reference or application:

Data Collectors:

PSTRT

Data User(s):

Citation Notes:

This dataset was used in the analysis of population identification and viability assessment for the Puget Sound Steelhead DPS. Most of this dataset was completed by 2007, with minor edits thereafter.

Data Type:

Spatial

Max Date:

9/28/2025

Dataset DOI:

Steelhead

Document DOI:

Version:

Access Date:

12/31/1969

Year Published:

2025

Contact Name	Title	Agency	Email	EditDelete
Damon Holzer	Project Manager	NOAA Fisheries	damon.holzer@noaa.gov

Showing 1 to 1 of 1 Data

Title	Ecosystem	Last Updated	Version	Contact Names	EditDelete
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