Dataset Overview

Raw high-frequency lake data (water temperature, dissolved oxygen, dissolved oxygen percent, chlorophyll a, and pH) from Lake Sammamish collected at AWSSammamish every meter between 1-28 m. Original data were collected by vertical profiles every 1-6 hours. Measurements were recorded every 2-minutes after the sonde stabilized. Platform was deployed year-round, 2000-2017.

See Full Dataset Documentation


Please see GEISHA Project home page on FEMC website at or see the GEISHA website hosted by INRAE at

Data Collection Status

Data collection for this dataset has been completed

Start date


End date



493920 records with 11 fields

Data Availability

Available for download

Data License

CC BY - Attribution license logo

Preferred Citation

Stockwell JD, Brentrup JA, Bruel R, Doubek JP, DeGasperi C (2021) Lake Sammamish raw high-frequency lake data, 2000-2017. Global Evaluation of the Impacts of Storms on freshwater Habitat and structure of phytoplankton Assemblages (GEISHA) Working Group, FRB Centre for the Synthesis and Analysis of Biodiversity and USGS John Wesley Powell Center. Available online at:

Update Frequency

As needed

Maintenance Plan

Not provided


No links available for this dataset

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Previous Versions
    • Version 2 - 28Jul2021 (created 2021-07-28 by Jason Stockwell)
    • Version 1 - 25Mar2021 (created 2021-03-25 by Jason Stockwell)