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Water Quantity and Quality

Coastal Coho Assessment Viewer

The Coho Assessment Viewer was created to display a sampling of the maps and data graphics created for the Oregon Coastal Coho Assessment project.

Coastal Coho Tool

Fish passage restoration in
the Siuslaw Watershed

In 2005, the State of Oregon and NOAA Fisheries completed a collaborative project to address the conservation of coastal coho on the Oregon Coast. A primary objective of the project was to assess efforts by Oregon Plan for Salmon and Watersheds partners to conserve and rebuild coastal coho populations. For more information about the Coastal Coho Assessment project, visit the Oregon Plan for Salmon and Watersheds website.

Initially, NOAA Fisheries Service listed Oregon coastal coho as threatened under the Endangered Species Act in 1998. The fisheries service announced in January 2006 that the Oregon coastal coho Evolutionarily Significant Unit (ESU) was not warranted for listing under the Act. Although this population of coho is not now listed as threatened, the State of Oregon, its partners under the Oregon Plan for Salmon and Watersheds, and NOAA Fisheries Service continue to work together to restore these fish.

There are two tools for exploring this information, the ESU Explorer tool and the Interactive Case Study tool. The ESU tool presents data on a number of key Limiting Factors analyzed for the Coastal Coho Assessment project. The data are presented for the entire Evolutionarily Significant Unit and are displayed for each of the Coho Population Units.

The Interactive Case Study tool presents a key limiting factor from the Coastal Coho Assessment on an individual Watershed Level as a case study. This tool combines the data compiled at the State and Federal level with data and efforts being undertaken at the Watershed Council level. The Interactive Case Study tool includes a number of interactive map and data exploration functions.

Instructions for Using the Interactive Tools

Instructions for Using the Interactive Tools

Screenshot showing the tool layout

Interactive map controls are embedded in the text of the article, allowing you to visualize the process of culvert prioritization with the context of actual watershed data. These interactive tools are highlighted to the right of the text.

For example:

Check boxes are provided for you to toggle map layers on and off. The "Zoom to!" function allows you to zoom in on a location that is of particular interest.

Instructions for Using the Interactive Tools

Additional text is provided below some of the tools to alert you to other interactive features.

Instructions for Using the Interactive Tools

You can also explore the map and data directly by using the "Interactive Layers" and "Map Tools" panels in the upper-right of the display. "Interactive Layers" include all the base layers that are used in the article, with the addition of topography and land ownership. These layers have an extra feature that allows you to "Fade" them in and out to a desired level.

Instructions for Using the Interactive Tools

Map tool detail

The "Map Tools" allow you to zoom and navigate the map directly. You can zoom in or out stepwise or jump to a specific zoom level using the horizontal zoom tool. Navigating the map is easy; once you have zoomed in, you can drag the purple highlighted box to any part of the inset map.

The "Previous View" button allows you to toggle between your last two views of the map, and the "Full Extent" button returns you to the view of the entire watershed.

Also in the Map Tools panel, you can choose an option for how to interact with the main map itself: zooming or dragging. With "Zoom in" selected, you can either click once on the map or draw a box to select an area to zoom to. With the "Drag map" function, you simply need to grab the map directly to move to a new location.

Sources for the Siuslaw Watershed Council Interactive Case Study

Coastal Landscape Modeling and Analysis Study (CLAMS) land ownership spatial data.

U.S. Geological Survey (USGS) topography spatial data.

CLAMS high intrinsic potential spatial data.

Siuslaw Watershed Council priorities for culvert replacement spatial data.

Oregon Department of Fish and Wildlife Fish passage barriers spatial data.

Oregon Watershed Enhancement Board coastal coho restoration projects spatial data.