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Data Series 807

Prepared in cooperation with the Swinomish Indian Tribal Community

Thermal Profiles for Reaches of Snee-Oosh and Fornsby Creeks, Swinomish Indian Reservation, Northwestern Washington, July 2013

Andrew S. Gendaszek and Chad C. Opatz

Abstract

Longitudinal profiles of streambed temperatures were measured in approximately 225-m-long reaches of the Snee-Oosh and Fornsby Creeks in the Swinomish Indian Reservation, northwestern Washington, during July 2013, to provide information about areas of groundwater discharge to streams. During summer, groundwater discharge is a source of cold water to streams and typically cools the surface water into which it discharges and buffers diurnal temperature fluctuations. Near-streambed temperatures were averaged over 1-m-long sections of cable during 1-minute periods every 30 minutes for 1-week periods using a fiber-optic distributed temperature sensor positioned on top of the streambed. The position of the fiber-optic cable was surveyed with a Global Positioning System. Stream temperatures and survey data are presented as Microsoft Excel® files consisting of date and time, water temperature, and geographical coordinates.

First posted December 17, 2013

For additional information, contact:
Director, Washington Water Science Center
U.S. Geological Survey
934 Broadway, Suite 300
Tacoma, Washington 98402
http://wa.water.usgs.gov

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Suggested citation:

Gendaszek, A.S., and Opatz, C.C., 2013, Thermal profiles for reaches of Snee-Oosh and Fornsby Creeks, Swinomish Indian Reservation, northwestern Washington, July 2013: U.S. Geological Survey Data Series 807, 6 p., https://dx.doi.org/10.3133/ds807.

ISSN 2327-638X (online)



Contents

Abstract

Intoduction

Thermal Profile Survey

Distribution of Information

Acknowledgments

References Cited

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