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

What is the Impact of Urbanization on the Scott

County Watersheds?

North Elkhorn Creek

Riparian zone

Testing the pH

The pH testing on North Elkhorn.

Testing the Waters

Dissolved Oxygen

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

How to catch a macroinvertebrate

Macro Invertebrate Caught

Brian explaining the chart for macro.

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

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

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

Classifying macroinvertebrates on

our assessment scale

Marking GPS Points

Gathering Data for our Maps

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

Earl SmithWith Georgetown and Scott County

Planning and Zoning…

Georgetown

Elkhorn Creek through Georgetown

Conservation Field Trip

Great Crossings Park

Learning How Water Affects Soil

Sources of

pollution