Raw Biological Data for the ROBINSON RIVER at Route 670 (M-12)

Cycle

Avg. Width (ft)

Avg. Depth (in)

Flow Rate

Temp (°F)

Collection Time (sec)

Worms

Flatworms

Leeches

Crayfishes

Sowbugs

Scuds

Stoneflies

Mayflies

Dragonflies Damselflies

Hellgrammites Fishflies Alderflies

Net-spinning Caddisflies

Most Caddisflies

Beetles

Midges

Black Flies

Most True Flies

Gilled Snails

Lunged Snails

Clams

Other

Total

Index Value

Ecological Condition

Spring 01

30

8

normal

53.5

n/d

0

0

0

0

0

0

6

99

0

2

53

14

6

17

0

4

0

0

0

0

201

9

Acceptable

Summer 01

23

10

low

61

80

1

0

0

0

0

0

3

33

0

18

49

0

15

47

0

15

0

0

0

27

208

10

Acceptable

Fall 01

20

6

low

55

45

0

0

0

0

0

0

19

22

0

3

84

20

5

45

5

0

0

0

0

12

215

7

Acceptable

Winter 02

15

12

normal

36

20

0

0

0

0

0

0

17

76

0

0

59

15

0

38

45

0

0

0

0

0

250

9

Acceptable

Spring 02

15

10

high

61

20

0

0

0

0

0

0

29

107

0

0

37

14

5

21

3

0

0

0

0

0

216

10

Acceptable

Summer 02

18

12

normal

66

20

2

0

0

0

0

0

4

125

0

1

9

16

11

45

0

0

1

0

0

11

225

11

Acceptable

Fall 02

12

6

normal

55

40

2

1

0

1

0

0

16

385

1

15

74

24

10

17

0

0

0

0

0

0

546

10

Acceptable
Winter 03 15 8 normal 37 25 0 0 0 0 0 0 11 117 1 0 40 21 0 17 17 0 2 1 0 0 227 9 Acceptable
Spring 03 25 12 high 63 20 3 0 0 0 0 0 21 85 1 1 42 32 4 4 0 0 0 0 0 0 193 9 Acceptable
Summer 03 12 6 normal 70 20 6 0 0 0 0 0 59 93 1 4 19 24 7 17 0 1 0 0 0 10 241 10 Acceptable
Spring 04 4 6 high 63 20 0 0 0 0 0 0 42 172 1 0 8 17 2 29 8 0 0 0 0 0 279 10 Acceptable
Summer 04 15 9 low 72 20 0 0 0 0 0 0 16 80 1 7 97 18 15 26 13 1 0 0 0 3 277 9 Acceptable
Spring 06 20 8 low 69.8 40 0 0 0 0 0 0 16 20 0 0 120 0 1 153 11 3 0 0 0 0 324 7 Unacceptable
Return to M-12     n/d = No data