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The recommended time period for non-tidal data is year round. All samples collected within a calendar year should be included in data analyses. Once thresholds have been identified, data are scored using either a pass/fail or multiple threshold method. Ideally, multiple thresholds are used to provide some gradation of results from poor to excellent, rather than just pass or fail, but this may not be appropriate for all indicators.

Read more about this protocol's scoring methods.


Spokane Riverkeeper

Spokane Riverkeeper exists to ensure equitable access to the resources and natural beauty of the Spokane River and to restore and preserve the river for future generations of our community. We believe that the river is such a cherished asset to all citizens of this community, that equitable use is a matter of justice. And this is why Spokane Riverkeeper is a priority program of the Center for Justice. Our goal is for a fishable and swimmable Spokane River. Spokane Riverkeeper is a vigilant guardian and advocate for the Spokane River and its watershed. We work for the restoration and conservation of the river’s ecological health and aesthetic integrity. As a member of the international Waterkeeper Alliance movement, Riverkeeper’s first priority is to defend the river against pollution and polluters.



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