Macroinvertebrate Results for Spring 2001

Site Stream Name Avg. Width Avg. Depth Flow Rate Temp Collection Time 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
C-1 Crooked Run 20 ft. 9 in. normal 43.5 F 90 s 3 0 0 0 0 0 3 6 0 3 10 1 0 28 20 4 0 0 3 0 81 6
C-2 Cedar Run 30 ft. 6 in. normal 41 F 45 s 14 0 0 0 1 0 15 2 2 6 1 0 9 41 121 1 0 2 0 0 215 5
C-5 Hazel River 20 ft. 6 in. normal 62.5 F 40 s 0 0 0 0 0 0 25 60 0 5 52 42 7 39 18 1 0 0 0 0 251 10
C-12 Rappahannock River 70 ft. 8 in. normal 61 F 40 s 1 0 4 0 0 0 93 122 0 1 24 7 14 3 1 0 0 0 0 6 276 11
C-13 Robinson River 50 ft. 18 in. normal 44.5 F 40 s 2 0 0 0 0 0 21 168 2 0 52 1 13 26 3 10 0 0 0 0 298 11
C-15 Mountain Run (Trib.) 5 ft. 6 in. normal 70 F 20 s 36 45 0 0 0 0 0 0 0 1 84 0 2 71 0 8 0 0 0 0 247 4
C-17 Mountain Run 25 ft. 6 in. normal 67 F 100 s 10 33 0 0 0 0 0 0 0 2 2 0 35 158 1 0 0 0 0 0 241 7
F-1 Carters Run 35 ft. 14 in. high 49.1 F 70 s 3 0 0 0 0 0 9 170 1 12 27 4 5 21 2 1 1 0 2 0 258 10
F-3 Great Run (East) 10 ft. 6 in. high 57.2 F 140 s 35 0 5 0 0 0 0 0 5 3 109 0 3 7 0 1 0 1 0 0 169 3
F-4 Fiery Run 10 ft. 12 in. normal 66 F 20 s 1 0 0 3 0 0 28 53 0 0 86 18 10 9 2 2 0 0 0 0 212 9
F-10 Great Run (West) 11 ft. 12 in. high 53.6 F 20 s 13 0 3 0 0 0 5 95 5 17 29 3 74 0 0 1 0 0 12 0 257 11
F-12 Marsh Run 15 ft. 12-15 in. normal 75.2 F 50 s 25 0 0 0 5 0 9 4 0 0 2 0 7 208 35 0 0 0 4 0 299 5
F-14 Thumb Run 40 ft. 15 in. high 50 F 20 s 6 0 0 0 0 0 10 71 0 7 156 3 3 8 19 2 0 0 1 7 291 7
F-15 Deep Run 15 ft. 4 in. low 69.8 F 45 s 6 0 0 1 0 0 23 33 1 3 55 16 40 23 0 5 0 0 10 0 216 10
G-4 South River 15 ft. 4 in. normal 57.2 F 20 s 8 1 0 0 0 0 40 54 0 1 68 29 0 12 4 2 1 0 0 0 220 9
G-5 Conway River 10 ft. 6 in. normal 57.2 F 20 s 5 0 0 0 0 0 35 303 0 30 128 35 0 71 17 0 0 0 0 0 624 9
M-3 Rapidan River at 662 25 ft. 8 in. normal 53.6 F 40 s 105 0 0 0 0 0 4 137 0 5 14 62 1 31 0 9 0 0 0 0 368 8
M-4 Beautiful Run 15 ft. 12 in. high 71.6 F 70 s 15 1 0 0 0 0 2 16 0 2 39 3 6 59 85 0 0 0 0 0 229 5
M-5 Great Run 10 ft. 6 in. normal 64.4 F 40 s 47 0 0 0 0 0 3 18 0 0 32 26 0 74 43 0 0 0 0 0 243 6
M-6 Deep Run at 603 10 ft. 6 in. normal 53.6 F 20 s 57 0 0 0 0 0 12 72 0 0 8 11 0 37 13 0 0 0 0 0 210 7
M-9 White Oak Run 15 ft. 6 in. normal n/d 90 s 3 0 0 0 0 5 0 24 3 1 5 0 1 2 0 9 0 0 4 0 57 8
M-11 Rose River 20 ft. 4 in. normal 55.4 F n/d 1 2 0 0 0 0 2 126 0 1 37 10 5 26 4 2 0 0 0 1 217 10
M-12 Robinson River at 670 30 ft. 8 in. normal 53.6 F n/d 0 0 0 0 0 0 6 99 0 2 53 14 6 17 0 4 0 0 0 0 201 9
M-14 Popham River 20 ft. 6 in. high 44.6 F 60 s 0 1 0 0 0 0 4 56 0 3 106 23 4 24 1 6 0 0 0 0 228 8
O-1 Blue Run 15 ft. 12 in. normal 62.6 F 40 s 0 1 0 2 0 0 11 65 0 6 59 0 56 77 40 5 0 0 2 0 324 11
O-2 Mine Run 20 ft. 12 in. normal 74.3 F 20 s 4 1 1 1 0 0 22 62 0 2 64 13 12 9 14 1 0 0 0 0 206 10
O-3 Mountain Run at 611 25 ft. 12 in. normal 74.3 F 30 s 9 5 0 0 0 0 8 15 1 2 213 3 61 16 7 1 0 0 1 0 342 8
R-2 Hughes River 40 ft. 12 in. normal 62.6 F 30 s 0 0 0 0 0 0 15 95 0 0 43 18 2 89 5 3 0 0 0 0 270 10
R-3 Rush River 15 ft. 6 in. normal 62.6 F 40 s 2 0 0 0 0 0 5 98 1 4 34 0 18 22 9 8 0 0 2 0 203 12
R-5 Thornton River (North Fork) 20 ft. 6 in. normal 62.6 F 50 s 3 0 0 1 0 0 19 188 0 2 29 13 21 23 0 5 0 0 0 0 304 12
R-6 Thornton River (South Fork) 20 ft. 6 in. normal 62.6 F 40 s 6 1 0 3 0 0 14 133 3 2 19 7 42 22 0 14 0 0 0 0 266 12
R-8 Piney River 12 ft. 8 in. normal 63 F 20 s 1 0 0 0 1 0 80 67 0 1 50 53 5 0 1 0 0 0 0 0 258 10
R-12 Battle Run 15 ft. 6 in. low 68 F 35 s 3 0 0 0 0 0 4 130 0 7 82 6 6 7 24 3 0 0 0 0 266 9