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  Surface Trends for Independence Lake

Surface Trends for Independence Lake

The RUSS data from Independence Lake has been summarized to show the average values of the measured parameters in the lake's surface layer on each day. Provided below are links to charts showing both the daily range as well as the mean of each sensor parameter.

      1. temperature
      2. turbidity
      3. dissolved oxygen
      4. pH
      5. % oxygen saturation
      6. electrical conductivity

Also available is a downloadable Excel spreadsheet (it's about 160 Kbytes) that contains all of the data and charts listed above.

Bear in mind the sensor calibration dates when viewing these graphs.

NOTE: Currently the RUSS unit is limited to an uppermost sampling depth of about 0.7 meters. Typically, we will average values for 1, 2, and 3 meters to calculate the mean "surface water" value. The depth range was chosen based on examination of the mixed layer depth from soon after ice out through June 1998.

These data should be considered "provisional" until otherwise indicated. The data are undergoing several rounds of QA/QC review and some of the data may be modified at a subsequent date. We chose to leave the data hose on full blast whenever possible to familiarize ourselves with the operation and maintenance requirements of the RUSS units and to generate real data for use in developing curricula and lesson plans. Data gaps were associated with various RUSS system upgrades and occasional gremlins.

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Lake Independence Surface Layer -- Turbidity (NTU)

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Lake Independence Surface Layer -- Dissolved Oxygen (% saturation at temperature)

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Lake Independence Surface Layer -- Dissolved Oxygen (mg/L)

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Lake Independence Surface Layer -- Electrical Conductivity (microSiemens/cm)

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Lake Independence Surface Layer -- Temperature (degrees C)

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Lake Independence Surface Layer -- pH

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http://www.waterontheweb.org/data/independence/trends/surface.html
date last updated: Tuesday March 09 2004