Our Stream Studies

2004 Biotic Environment Data Table
 

 Invertebrate Number

 Invertebrate Number
 

Stream Organism

 Session 1

 Session 2

 Total
Dragonfly Nymph

 27

26

53

Dobsonfly Larva

24

30

54

Alderfly Larva

12

24

 36

Fishfly Larva

13

 14

 27

Damselfly Nymph

11

7

18

Cranefly Larva

18

13

31

Caddisfly Larva

28

10

38

Mayfly Nymph

186

128

314

Midgefly Larva

36

38

74

Stonefly Nymph

97

106

203

Water Penny

20

18

38

Beetle Larva (Misc.)

33

54

87

Water Mite

134

105

239

Adult Beetle (Misc.)

36

36

72

Whirligig Beetle

4

7

11

Water Strider

2

1

3

Copepod

0

0

0

Clam

2

2

4

Planaria

2

22

24

Leech

2

0

2

Horsehair Worm

5

4

9

Fresh Water Annelid

10

14

24

Blackfly Larva

8

6

14

Water Scorpion

1

4

5

Average 

B.O.D. (mg/L)

3,0

3.0

3.0

Snails (per square foot)

13.4

27.8

20.6

Crayfish (per square meter)

17.3

11.2

14.3

Diatom Cells (per ml)

308

646

477

Confirm E coli cells (per 100 ml)

2800

110

1455

Fecal E coli cells (per 100 ml)

130

50

90



1972-Present Biological Test Data
Water Chemistry Tests and Methods

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