Saturday, July 17, 2010

Water Sampling at Grass Lake 2010

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Each year the South Dakota Canoe/Kayak Association performs a number of public service activities. For the last three years, taking water samples from area waterways has been one of those activities. Dakota Water Watch is the agency coordinating the water sampling for our area, and this morning representatives of that organization provided refresher training for SDCKA members as they set out to collect samples at Grass Lake, about 20 miles west of Sioux Falls.
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The volunteers worked in pairs, two teams in kayaks and one in a canoe. Each team was given an overview of their assignment and provided the paperwork and equipment needed to sample conditions at three specific locations on the lake.
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The teams were asked to assess the environmental conditions of the lake, the shore and the sky. Their assignments included temperature of the lake, depth and clarity of the water, and taking a water sample for later analysis.
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We all proceeded to accomplish our assigned responsibility and then lingered a bit on our way back to the staging area. From departure until returning with the data and samples, we were out for perhaps an hour and a half.
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It was a beautiful day on Grass Lake. We gathered at 9:00 a.m., and the temperature was about 85 degrees with moderate wind and sunny skies. The lake was perhaps two feet higher than normal at this time of year.
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I did not see any waterfowl or other “critters” on this cruise, although our trip was more purposeful than my typical cruise on Grass Lake. I did come across a school of little black fish that reminded me of Black Mollies that I have had in my home aquarium at times.
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A cruise of this sort offers an opportunity to be involved in a scientific investigation of sorts. We were working with specific protocols and gathering data to determine the condition of area lakes. This was the second sampling operation for the SDCKA on Grass Lake. The first one provided a baseline for evaluating changes over time, and this operation today provided interval data to compare conditions.
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As we finished our assignments, we cruised back to the “put-in” and had a few laughs along the way. Readers interested in the water sampling activity can review earlier narratives posted under Grass Lake and Diamond Lake
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