Our Stream Studies


1972-2004 Biological Test Data (Total Observed)

Stream Organism

 1972

 1973

 1974

 1975

 1976
Dragonfly Nymph

 4

0

10

 5

 21

Dobsonfly Larva

12

3

0

 19

 28

Damselfly Nymph

2

0

2

 5

 15

Cranefly Larva

7

0

16

 0

 13

Caddisfly Larva

6

0

2

 6

 20

Mayfly Nymph

95

93

49

 73

 181

Midgefly Larva

5

0

0

 4

 2

Stonefly Nymph

37

0

26

 20

 42

Water Penny

9

0

0

 0

 10

Beetle Larva (Misc.)

4

0

6

 14

 24

Water Mite

15

12

23

 0

 47

Adult Beetle (Misc.)

0

0

0

 11

 0

Whirligig Beetle

11

0

21

 0

 8

Water Strider

0

0

6

 0

 3

Copepod

0

0

0

 0

 0

Clam

0

0

0

  0

 0

Planaria

0

0

0

  5

 10

Leech

0

0

1

 0

 0

Horsehair Worm

1

0

0

 5

 3

Fresh Water Annelid

0

0

5

 0

 0

Blackfly Larva

0

0

0

 0

 0

Water Scorpion

0

0

0

 0

 0

         
B.O.D. (mg/L)

-

-

 -

 -
Snails (per square foot)

-

-

-

 47

 47

Crayfish (per square meter)

-

-

-

 2

 1

Diatom Cells (per ml)

76

14

49

 46

 150

Confirm E coli cells (per 100 ml)

65

114

-

 -

 98

Fecal E coli cells (per 100 ml)

-

-

-

 -

 -



Total Number of Stream Organisms Observed

Stream Organism

 1977

 1978

 1979

 1980

 1981
Dragonfly Nymph

 7

0

5

 17

 -
Dobsonfly Larva

17

7

20

 110

 -
Damselfly Nymph

7

17

38

 31

 -
Cranefly Larva

18

14

25

 56

 -
Caddisfly Larva

45

26

78

 69

 -
Mayfly Nymph

194

168

283

 346

 -
Midgefly Larva

15

19

71

60

 -
Stonefly Nymph

17

41

73

 142

 -
Water Penny

3

5

5

 14

 -
Beetle Larva (Misc.)

0

0

0

 0

 -
Water Mite

21

27

118

 94

 -
Adult Beetle (Misc.)

0

22

33

 26

 -
Whirligig Beetle

6

2

0

310

 -
Water Strider

9

1

5

 3

 -
Copepod

0

0

0

 0

 -
Clam

0

2

0

  0

-
Planaria

2

6

5

  25

 -
Leech

0

3

10

17

-
Horsehair Worm

12

10

10

 61

 -
Fresh Water Annelid

0

4

4

21

 -
Blackfly Larva

0

0

0

 0

 -
Water Scorpion

0

0

0

 0

 -
         
B.O.D. (mg/L)

-

-

 -

 -
Snails (per square foot)

104

297

297

 -

 -
Crayfish (per square meter)

3

2

2

 5

-
Diatom Cells (per ml)

251

321

73

 310

 -
Confirm E coli cells (per 100 ml)

45

23

300

 77

 -
Fecal E coli cells (per 100 ml)

-

-

-

 -

 -


Total Number of Stream Organisms Observed

Stream Organism

 1982

 1983

 1984

 1985

 1986
Dragonfly Nymph

-

-

18

 -

 9

Dobsonfly Larva

-

-

40

 -

38

Damselfly Nymph

-

-

9

 -

 5

Cranefly Larva

-

-

33

 -

 7

Caddisfly Larva

-

-

70

 -

 151

Mayfly Nymph

-

-

421

 -

600

Midgefly Larva

-

-

59

-

126

Stonefly Nymph

-

-

112

 -

 148

Water Penny

-

-

31

 -

 8

Beetle Larva (Misc.)

-

-

3

 -

 0

Water Mite

-

-

213

 -

 137

Adult Beetle (Misc.)

-

-

12

 -

 9

Whirligig Beetle

-

-

5

-

4

Water Strider

-

-

1

 -

 1

Copepod

-

-

0

 -

 0

Clam

-

-

0

 -

0

Planaria

-

-

0

-

 0

Leech

-

-

0

-

0

Horsehair Worm

-

-

6

 -

 0

Fresh Water Annelid

-

-

20

-

 5

Blackfly Larva

-

-

0

 -

 1

Water Scorpion

-

-

0

 -

 0

         
B.O.D. (mg/L)

-

-

 -

 -
Snails (per square foot)

-

-

163

 -

 -
Crayfish (per square meter)

-

-

2

 -

1

Diatom Cells (per ml)

-

-

221

 -

254

Confirm E coli cells (per 100 ml)

-

-

117

 -

 50

Fecal E coli cells (per 100 ml)

-

-

-

 -

 -



Total Number of Stream Organisms Observed

Stream Organism

 1987

 1988

 1989

 1990

 1991
Dragonfly Nymph

10

13

12

36

 12

Dobsonfly Larva

61

27

24

 18

8

Damselfly Nymph

9

23

10

 36

 8

Cranefly Larva

35

14

48

4

 8

Caddisfly Larva

102

111

167

34

 112

Mayfly Nymph

351

299

553

 368

360

Midgefly Larva

166

207

347

20

90

Stonefly Nymph

89

100

123

 148

 40

Water Penny

11

9

50

12

 160

Beetle Larva (Misc.)

15

13

1

 10

 12

Water Mite

248

65

67

 22

 134

Adult Beetle (Misc.)

4

0

0

 0

 0

Whirligig Beetle

23

3

33

10

6

Water Strider

11

1

1

 4

0

Copepod

2

0

0

 0

 0

Clam

0

0

0

 0

0

Planaria

0

4

2

0

 2

Leech

0

0

3

3

0

Horsehair Worm

38

11

1

 0

 0

Fresh Water Annelid

9

11

9

8

 33

Blackfly Larva

0

0

0

 0

 0

Water Scorpion

2

1

0

 2

 0

         
B.O.D. (mg/L)

2

3

 1

 1

Snails (per square foot)

53

-

132

 22

 91

Crayfish (per square meter)

9

13

8

 5

5

Diatom Cells (per ml)

648

232

156

 162

128

Confirm E coli cells (per 100 ml)

280

94

540

 490

 280

Fecal E coli cells (per 100 ml)

0

11

3

 20

 13

Total Number of Stream Organisms Observed

Stream Organism

 1992

 1993

 1994

 1995

 1996
Dragonfly Nymph

26

21

12

31

 17

Dobsonfly Larva

42

14

14

 29

31

Damselfly Nymph

10

13

14

 11

19

Cranefly Larva

20

44

76

18

 7

Caddisfly Larva

80

33

15

44

 34

Mayfly Nymph

289

209

203

 241

198

Midgefly Larva

82

144

304

58

21

Stonefly Nymph

58

97

176

 88

 64

Water Penny

40

18

11

33

 7

Beetle Larva (Misc.)

17

35

0

 17

 4

Water Mite

224

80

45

 575

 301

Adult Beetle (Misc.)

0

0

9

 35

 22

Whirligig Beetle

27

29

14

23

15

Water Strider

2

12

4

 15

5

Copepod

0

0

0

 0

 0

Clam

1

0

0

 1

0

Planaria

6

14

18

0

 1

Leech

0

8

4

1

2

Horsehair Worm

0

19

19

13

 2

Fresh Water Annelid

8

22

10

4

 14

Blackfly Larva

0

0

0

 0

 1

Water Scorpion

2

2

4

 5

 10

         
B.O.D. (mg/L)

1

2

4

 3

 1

Snails (per square foot)

63

58

7

 30

 33

Crayfish (per square meter)

1

2

5

 10

10

Diatom Cells (per ml)

120

373

165

 217

43

Confirm E coli cells (per 100 ml)

835

1600

170

 -

 12700

Fecal E coli cells (per 100 ml)

11

25

25

 137

 65

Total Number of Stream Organisms Observed

Stream Organism

 1997

 1998

 1999

 2000

 2001
Dragonfly Nymph

16

  12

 54

 33

 57

Dobsonfly Larva

19

 27

 42

 69

 65

Alderfly Larva    

 4

 25

 3

Fishfly Larva    

 4

 21

 5

Damselfly Nymph

3

 15

 19

 9

 35

Cranefly Larva

13

 17

 27

 37

 33

Caddisfly Larva

17

 44

 25

 33

 32

Mayfly Nymph

200

 196

 383

 255

 342

Midgefly Larva

53

 26

 74

 40

 79

Stonefly Nymph

101

 92

 76

 71

 107

Water Penny

4

 24

 8

 12

 10

Beetle Larva (Misc.)

8

 1

 44

 83

 113

Water Mite

150

 513

 795

 105

 79

Adult Beetle (Misc.)

4

 11

 28

 37

 133

Whirligig Beetle

13

 23

 6

 11

 15

Water Strider

0

 7

 2

 10

 6

Copepod

2

 2

 0

 0

 1

Clam

3

 0

 4

 1

 1

Planaria

1

 4

 3

 3

 7

Leech

1

 1

 1

 3

 11

Horsehair Worm

2

 17

 10

 13

 17

Fresh Water Annelid

15

 14

 19

 15

 51

Blackfly Larva

1

 1

 22

 5

 3

Water Scorpion

15

 7

 3

 0

 6

           
B.O.D. (mg/L)

1

 2

 3

 6

 3

Snails (per square foot)

30

 38

 15

 92

 21

Crayfish (per square meter)

4

 15

 5

 11

 9

Diatom Cells (per ml)

97

 39

 248

 106

 729

Confirm E coli cells (per 100 ml)

735

 9200

 155

 715

 1430

Fecal E coli cells (per 100 ml)

10

 50

 < 20

 145

 < 20

Total Number of Stream Organisms Observed

Stream Organism

 2002

 2003

 2004

2005

 2006
Dragonfly Nymph

56

28 

53 

 

 

Dobsonfly Larva

26

39 

54 

 

Alderfly Larva

 12

 8

36 

 

 

Fishfly Larva

 6

 25

27 

 

 

Damselfly Nymph

12

19 

18 

 

 

Cranefly Larva

15

11 

31 

 

 

Caddisfly Larva

23

14

38 

 

Mayfly Nymph

305

219 

314 

 

 

Midgefly Larva

30

25 

74 

 

Stonefly Nymph

60

34 

203 

 

 

Water Penny

8

20 

38 

 

 

Beetle Larva (Misc.)

54

29 

87 

 

 

Water Mite

64

97 

239 

 

 

Adult Beetle (Misc.)

91

26 

72 

 

 

Whirligig Beetle

16

11 

 

 

Water Strider

5

3

 

Copepod

0

 

 

Clam

0

0

 

Planaria

2

24 

 

 

Leech

1

 

 

Horsehair Worm

3

 

 

Fresh Water Annelid

18

19 

24 

 

 

Blackfly Larva

7

14 

 

 

Water Scorpion

4

 

         
B.O.D. (mg/L)

2

 3

 

 

Snails (per square foot)

20

60 

20.6

 

Crayfish (per square meter)

14

14.3 

 

Diatom Cells (per ml)

84

47 

 477

 

 

Confirm E coli cells (per 100 ml)

10700

260 

1455 

 

 

Fecal E coli cells (per 100 ml)

<20

35 

90 

 

 




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