General InfoInvestigator Name(s): Daryl Kuhn's 7-8 Science ClassCollection Date & Time: Wednesday, May 29, 2013 - 9:15amPresent: Steady RainSchool: Edmunds Middle SchoolWatershed: Lake Champlain Direct & Grand Isle BasinsRiver: Potash Brook (Lake Champlain Direct Flow)Monitoring Site: Potash Brook Klingers entranceLatitude: 44.446710Longitude: -73.202838 Physical AssessmentWater Appearance: MuddySurrounding Development or Land Use: ParkResidentialIs there a water treatment plant upstream?: NoDo you see any pipes entering into the river?: NoAppox. Channel Width: 28.00ftAvg. Depth: 1.00ftCurrent Velocity: 2.00ft/secBank VegetationLeft bank: 10%Right bank: 10%Overhead CanopyCanopy Cover: 15% Biotic AssessmentPT Group 1 (Intolerant)Enter the number of each observedStonefly Nymph: 8Mayfly Nymph: 1Caddis Fly Larvae: 1Dobsonfly Larvae: 0Riffle Beetle: 1Water Penny: 0Right-Handed Snail: 0PT Group 2 (Moderately Intolerant)Enter the number of each observedDamselfly Nymph: 0Dragonfly Nymph: 7Sowbug: 0Scud: 0Cranefly Larvae: 6Clams/Mussels: 0Crayfish: 0PT Group 3 (Fairly Tolerant)Enter the number of each observedMidges: 0Black Fly Larvae: 2Planaria: 0Leech: 0PT Group 4 (Very Tolerant)Enter the number of each observedLeft-Handed Snail: 0Aquatic Worms: 0Blood Midge: 0Rat-Tailed Maggot: 0Pollution Tolerance Index Rating= 4*(Total # in PT Group 1) + 3*(Total # in PT Group 2) + 2*(Total # in PT Group 3) + 1*(Total # in PT Group 4) 23+ (Excellent) 17-22 (Good) 11-16 (Fair) 10 > (Poor) PT Index Rating: 27.0