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GMS Creek Crew
2007-2009
Georgetown Middle School
6th,7th and 8th Grades
Science and technology
Dr. Gayla Thompson, Ranie Smith & Pat Boone
Cherub Duvall, Lee Ann Gaines, Nick Lacey,
Katie Hooven, Lukas Dziatkowski
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What is the Impact of Urbanization on the Scott
County Watersheds?
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North Elkhorn Creek
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Riparian zone
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Testing the pH
The pH testing on North Elkhorn.
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Testing the Waters
Dissolved Oxygen
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Water
Temper
ature
Air
Temperature 20 -23 C
Dissolved Oxygen 7.0, 7.8
Measures the amount of oxygen gas dissolved in the
water.
(DO) 9.0 Best if between 8 and 12 parts per million (ppm)
Electrical Conductivity
410,
450, Measures dissolved ions in the water.
(EC) 470 Low - less than 200 High - greater than 800
pH
7.0, 7.0,
7.5
Acidic (below 7) or Basic (above 7). Best if between
6.5 & 7.5
Macroinvertebrates and chemical water testing
Location: N. Elkhorn
12:05pm
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How to catch a macroinvertebrate
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Macro Invertebrate Caught
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Brian explaining the chart for macro.
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Organisms
1- Water Penny
larva
X X X X X X X
1- Mayfly larva X X X X X X X
1- Stonefly
larva
X X X X X
1- Dobsonfly
larva
X
1- Caddisfly
larva
X X X X X X
ORGANISM
DATA CHART
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1- Riffle Beetle
Adult
X X X
1- Right-hand
Snails
X X X X
2- Damselfly
nymph
2- Dragonfly
nymph
X X
2- Crane Fly
larva
X
2- Beetle larva X X
2- Crayfish X X X X X X
2- Scuds X X
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2- Clams X X X X X X X
2- Sow Bugs X X
3- Black Fly
larva
X X X
3- Aquatic
Worms
X X X
3- Midge larva
3- Leeches X
3- Left-hand
Snails
X X X X X
TOTAL SCORE 20 20 30 22 20 25 18
RATING Poor (0-11)Fair (12-
16)Good (17-
22)Excellent (23 +)
G G E G G E G
MEAN SCORE
per day
23 22
.5
18
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Classifying macroinvertebrates on
our assessment scale
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Marking GPS Points
Gathering Data for our Maps
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COLLABORATIONClassroom-Assembly-Field Trip
Guest SpeakersEarl Smith
Georgetown/Scott County Planning & ZoningMichael Sapp
Director of Development ServicesEric Lawson
City EngineerBen Krebs
Planning Commission & EngineerBus Barnett
Water Treatment PlantToyota Field Trip & SpeakersScott County Conservation
Artie JanowScott County GPS Coordinator
ITEST Workshop/Camp, 2008Tracy Farmer Center for the Environment
Drew & Collin - GIS Map MakingBrian Ratliff – Creek Trips
Carol HanleyAudrey Long
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Earl SmithWith Georgetown and Scott County
Planning and Zoning…
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Georgetown
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Elkhorn Creek through Georgetown
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Conservation Field Trip
Great Crossings Park
Learning How Water Affects Soil
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Sources of
pollution
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