Puget Sound Spatially Referenced Regression on Watershed Attributes (SPARROW)

Cristiana Figueroa-Kaminsky; Jamie K. Wasielewski; Sheelagh McCarthy; Noah Schmadel; Daniel Wise; Zachary Johnson; Robert W. Black

Puget Sound Spatially Referenced Regression on Watershed Attributes (SPARROW)

Quality Assurance Project Plan 22-03-109

By: Cristiana Figueroa-Kaminsky, Jamie K. Wasielewski, Sheelagh McCarthy, Noah Schmadel, Daniel Wise, Zachary Johnson, and Robert W. Black

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Abstract

The United States Geological Survey (USGS) and the Washington State Department of Ecology (Ecology) are collaborating on the development of refined, seasonal load estimates of total nitrogen and total phosphorus within watersheds draining to Washington waters of the Salish Sea for the period 2005-2020. The modeling approach for this work is based on SPARROW (Spatially Referenced Regression on Watershed Attributes), a watershed modeling technique developed by the USGS. SPARROW is typically used to estimate stream loads throughout a stream network.

The estimated loads will be used within the context of the Puget Sound Nutrient Source Reduction Project to evaluate the influence of watershed contributions of nutrients throughout the stream network and to marine waters. This quality assurance project plan (QAPP) contains details about the technical approach, observational data, spatial and temporal source data, limitations, and quality assurance procedures that will be employed to develop the SPARROW models so that they can be used to inform additional actions to address excess nutrients.

Suggested Citation

Figueroa-Kaminsky, C., Wasielewski, J., McCarthy, S., Schmadel, N., Wise, D., Johnson, Z., and Black, R.W., 2022, Puget Sound Spatially Referenced Regression on Watershed Attributes (SPARROW): Quality Assurance Project Plan 22-03-109, 76 p.

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Additional publication details
Publication type	Report
Publication Subtype	State or Local Government Series
Title	Puget Sound Spatially Referenced Regression on Watershed Attributes (SPARROW)
Series title	Quality Assurance Project Plan
Series number	22-03-109
Year Published	2022
Language	English
Publisher	Washington State Department of Ecology (Ecology)
Contributing office(s)	Washington Water Science Center
Description	76 p.
Country	United States
State	Washington
Other Geospatial	Puget Sound