NG Shell Creek Data Powerpoint 2002
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Transcript of NG Shell Creek Data Powerpoint 2002
![Page 1: NG Shell Creek Data Powerpoint 2002](https://reader036.fdocuments.us/reader036/viewer/2022062303/5585e87bd8b42a037a8b4917/html5/thumbnails/1.jpg)
Researchers: Amanda Gasper, Anjuli Mostek, Jamie Lorenzen, Katie
Stone, Courtney Bennett, Mike Voelker, Aaron Hallgren, Instructor: Mark Seier
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Mission Collect data to report to the Shell Creek Watershed Improvement Group and Nebraska Wildlife Federation
Learn about the geography and location of the Shell Creek and the area it involves
Become knowledgeable about water chemistry parameters and their significance to the stream’s inhabitants
Learn about biological stream factors and how they indicate water quality
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Procedures
A total of four sites were selected and latitude and longitude were determined by using Global Positioning System (GPS).
Sampling was done in two day sets. First day was chemical testing and the second was macroinvertebrate sampling.
Chemical tests run include: pH, water temperature, turbidity, conductivity, velocity, nitrates, dissolved oxygen, and oxygen saturation
Macroinvertebrate sampling was done using a D-net and included 20, 1-foot square samples at each site.We also used Hester-Dendy samplers. Fish were sampled using a seine.
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Water Test Natural Readings Cautionary Readings
Dissolved Oxygen 5-14 ppm Below 5: water quality violation 1.5-5: stress resulting in abnormal feeding and reproduction 1.5: mortality 0: anoxic
pH 6.5 - 8.5 Below 6.5 Above 8.5
Nitrates 0.0 - 1.0 ppm Consistent readings above 3 ppm
Temperature Varies Above 27o Celsius
Turbidity 0 – 8 JTU Increasing trends in turbidity measurements
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pH Turbidity Nitrates Dissolved Oxygen
JTU NO3-N ppm
June 3, 4
Site 1 8 30 6 6.8
Site 2 7.5 30 4 4.9
Site 3 8 25 3 5.9
Site 4 8 40 2.2 5.6
June 24, 25
Site 1 7.5 50 2 4
Site 2 7.5 40 2 2.2
Site 3 8 50 1 6.4
Site 4 8 75 0.25 3.8
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pH Turbidity Nitrates Dissolved Oxygen
JTU NO3-N ppm
July 29, 30
Site 1 7.5 10 < 0.25 1
Site 2 7 15 0.25 0.6
Site 3 8 80 0.25 1.8
Site 4 8 20 < 0.25 4
August 8,9
Site 1 7 10 1 0.4
Site 2 7 35 2 0.9
Site 3 7.7 100 2.5 2.8
Site 4 7.5 110 2.5 3.7
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Dissolved Oxygen
Conduc-tivity
Velocity Water Temp.
% Sat. uS m/sec. Celsius
June 3, 4
Site 1 62 800 .04 18
Site 2 53 810 .06 19
Site 3 70 720 .11 22
Site 4 63 740 .13 21
June 24, 25
Site 1 45 765 0 22
Site 2 24 776 .02 22.3
Site 3 75 723 .15 25.8
Site 4 47 757 N/A 26.1
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Dissolved Oxygen
Conductivity
Velocity Water temp.
% Sat. uS m/sec Celsius
July 29, 30
Site 1 11 655 0 23.6
Site 2 7 655 .28 22.1
Site 3 21 655 .05 25.3
Site 4 48 610 .13 25.3
August 8, 9
Site 1 9 496 0 24.9
Site 2 10 360 .28 23.3
Site 3 22 391 .05 24
Site 4 43 503 .13 24.1
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Anjuli and Courtney are using fish nets
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Anjuli and Courtney are performing the dissolved oxygen test
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Amanda is writing the data form
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Mr.Seier at work
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Anjuli and Katie are using the D-nets to collect insects
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Katie Stone collecting sample water and Aaron Hallgren getting the GPS readings.
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Aaron and Mike are using the seine to collect fish
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Collecting water samples for oxygen tests
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Amanda is collecting different plants
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Scoured banks possibly caused by erosion and runoff
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Aaron is performing chemical test
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Conclusions and Concerns
•Low dissolved oxygen and % saturation rates
•High levels of turbidity
•High amounts of silt and sediment
•Low macroinvertebrate diversity
•Scoured banks at site 4
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Suggestions for future studies:
• We would like to add the tests: fecal coliform, biochemical oxygen demand, total phosphates, and total solids; to calculate the overall water quality index number.
• Continue to monitor same sites and add one or two new locations
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We would like to thank the Shell Creek Watershed Improvement Group and the
Natural Resource District for providing us with the testing materials.
We would also like to thank the landowners who owned the area around the sites we tested
for their cooperation in this study: Paul Cederlind, Fred Fehringer, and Katie Hallgren.