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Glengonnar Waterfield: Assessing River Health and Future Improvements

This report presents findings from various surveys conducted in the Glengonnar Waterfield area, analyzing land use, slope, altitude, rainfall, and water chemistry. We measured water velocity, river discharge, and substrate size while conducting fisheries and invertebrate surveys to assess biodiversity and river health. The Biological Monitoring Working Party (BMWP) scores and Average Score per Taxon (ASPT) were calculated to evaluate pollution tolerance. The results indicate areas for improvement, and future actions will focus on enhancing river habitat and biodiversity.

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Glengonnar Waterfield: Assessing River Health and Future Improvements

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  1. Glengonnar WaterField Results and What Next....

  2. Mouse Water Camps Water Glengonnar Water

  3. Land Use & Geography

  4. Slope 11.13 km from Source to confluence with River Clyde

  5. Land Use & Geography • Need to consider • Land Use • Slope • Altitude • Rainfall • Water Use • Land Runoff

  6. Data Gathered • Fisheries Survey • Invertebrate Survey • Water Velocity • River Discharge • Substrate Size • Water Chemistry • Land Use • Geography

  7. Water Chemistry

  8. Water Velocity - Oranges • Timed how long it took for an orange to travel 10m

  9. Water Velocity - Oranges • Used equation: speed = distance ÷ time

  10. Water Velocity – Flow Meter • Recorded the number of revolutions per minute and converted using an equation

  11. VelocityOrange vs Flow Meter • Orange = 0.58m per second • Flow Meter = 0.25m per second Are these comparable results?? NO!!!!

  12. River Discharge

  13. River Discharge - Results Average River Discharge = 0.23m3s

  14. Substrate Size • Measured 100 random pieces of substrate • Average size 8.1 cm

  15. Erosion, Transportation or Deposition • Substrate = 8.1 cm • Velocity = 0.25 cm/sec We need to consider all the different sized substrates and flow changes

  16. Invertebrate Data • 3 min kick sample • Count how many families present in river = Number of Taxa

  17. Invertebrate Data • 3 min kick sample • Count how many families present in river = Number of Taxa • Calculate the BMWP (Biological Monitoring Working Party) score

  18. These scores are based on tolerance to organic pollution Mayfly - Heptageniidae least tolerant (more likely to die) Worm - Oligochaeta most tolerant – unlikely to die (10x6)+ (7x4)+ 6 + (5x3) + 4 + 1 = 114

  19. Invertebrate Data • 3 min kick sample • Count how many families present in river = Number of Taxa • Calculate the BMWP (Biological Monitoring Working Party) score • Calculate the ASPT (Average Score per Taxon)= BMWP Score/Number of TAXA

  20. 114÷16 = 7.13

  21. Invertebrate Data • 3 min kick sample • Count how many families present in river = Number of Taxa • Calculate the BMWP (Biological Monitoring Working Party) score • Calculate the ASPT (Average Score per Taxon)= BMWP Score/Number of TAXA • Compare our scores against expected scores where no pollution existed (output from RIVPACS)

  22. Invertebrate Results • Site Taxa ÷ Expected Taxa= EQI Taxa 16 ÷ 21 = 0.76 • Site ASPT÷ Expected ASPT= EQI ASPT 7.13 ÷ 6.58 = 1.08

  23. Invertebrate Results • EQI Taxa = 0.76 • EQI ASPT = 1.08 Use lowest score Site = A2 Good

  24. Fisheries Data • 3 Run Depletion Fishing • Fish a measured area of river • Calculate a minimum estimate of fish density per 100m2

  25. Fisheries Results

  26. Fisheries Results

  27. Fisheries Results • Number of Trout Caught -23 • Area Fished (m2) - 114 • Brown Trout minimum estimate density per 100m2 =20 • Fry found at site – no • 19 fish had black tails

  28. What is good habitat? • Good Bankside and instream cover for fish to hide in • Holds banking together to prevent erosion • Water depth – not too shallow or deep

  29. What is good habitat? • Changes in flow type • Meandering nature

  30. What is good habitat? • Not all rivers are the same shape….upland rivers that are steep tend to be straighter and full of boulders and large cobbles.

  31. What next? • Examine your site results • Compare with a ‘perfect’ river • How is your site different? • How could it be improved? • Can it be improved? • Do you need to work with pupils from other classes? • Check out the website where all of the information for the field results can be found. • Use Kidblog to talk to each other and ask questions • Email • Internet

  32. Presentation • A group from each site will present their findings to us • Looking for you to highlight the biggest problems faced at your site. • Date to be confirmed...June 2014.

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