Raw Biological Data for the RAPIDAN RIVER at Route 610 (C-14)

Cycle

Avg. Width (ft)

Avg. Depth (in)

Flow Rate

Temp (°F)

Collection Time (sec)

Worms

Flatworms

Leeches

Crayfish

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 Conditions

Summer 01

50

18

normal

78

50

3

0

0

0

0

0

0

80

1

1

7

0

11

12

95

0

1

0

0

0

211

8

Acceptable

Fall 01

45

14

low

48

40

0

8

0

0

0

0

10

87

9

1

83

7

12

7

1

4

0

6

2

0

237

6

Acceptable

Winter 02

50

18

normal

39

60

0

0

0

0

0

0

19

138

1

0

93

0

0

3

4

0

3

6

7

0

274

6

Acceptable

Spring 02

50

24

normal

68

70

18

1

0

0

0

0

42

26

5

0

0

5

30

29

1

1

4

5

35

0

202

8

Acceptable

Summer 02

40

12

low

77.9

20

24

36

0

0

0

0

15

31

0

1

64

3

65

22

3

8

10

4

5

1

292

7

Unacceptable
Fall 07 49 8 low 52.7 50 2 0 0 0 0 0 5 7 1 0 17 3 21 3 0 1 163 0 23 0 246 8 Acceptable
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