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Tables--because of their small font size the numbers identifying the sites referred to in the tables are not distinguishable on the web image versions of Plate 1. Please refer to the paper print of Plate 1 (included with the report) or download a high resolution version of Plate 1 (available in postscript and Arc/Info formats) from this site at "https://pubs.usgs.gov/of/1997/438/plate1.html".
Table 1B- Measurements from debris-flow channels in Madison County, Virginia. Sample
locations (ID) are shown on Plate 1. EROSION/DEPOS (E/D) indicates whether erosion or
deposition is predominant at this site. BLDR AVE and BLDR MAX are visual estimates of the
average and maximum sized boulders deposited. MAX FLOW DEPTH is an estimate of the
height of the debris-flow front as it passed this location based on deposits, mud lines, or damaged
vegetation. SUPPORT (S/E/P) refers to whether the larger boulders were supported (S) by
matrix, in edge to edge contact (E) or partially supported by matrix (P).
BLDR BLDR MAX FLOW SUPPORT
ID GRADIENT WIDTH EROSION/ AVE MAX DEPTH S/E/P
(DEGREES) (FT) DEPOS (FT) (FT) (FT)
W-3 D 5.74 4.92 S
W-4 7.5 114.80 D 6.56
W-5 11.0 D/E 3.28
W-6 13.0 E 11.48 S
W-7 18.0 65.60 3.28
W-13 8.0 82.00 D 1.15 6.56 6.56
W-14 7.5 32.80 D 1.15 6.56 8.20
W-15 10.0 49.20 E 3.28
W-16 11.5 49.20 E
W-19 29.0 65.60 E
W-26 20.0 49.20 E 9.84
W-27a 12.0 65.60 D 2.46 8.20 4.10
W-27b 13.0 75.44 D 4.92
W-29a 10.0 32.80 E 3.28
W-29b 8.0 32.80 E/D 0.98
W-29c 10.0 49.20 E
W-30a 8.0 65.60 D 0.82 2.46 4.92 S
W-32a 12.5 65.60 D/E 3.28 8.20 14.76 S
W-33a 16.0 32.80 E 13.12
W-34 10.0 246.00 D 1.31 6.56 6.56 S
W-34d 11.0 49.20 D 3.28 6.56 5.74 S
W-35a carbon sample
W-36 9.0 E
W-36c 12.0 82.00 E/D 1.15 3.28 3.28 S
W-37 10.0 82.00 D 6.56
W-37a 10.5 3.28
W-38 15.0 157.44 E
W-41 15.0 98.40 E 9.84
W-43 12.0 D 2.46 S
W-47 9.0 196.80 E 9.84
W-48 12.0 157.44 E 0.98 3.28 9.84
W-49 15.0 E 1.15 3.28 9.84
W-50 22.0 78.72 E 2.46
W-51b 20.0 19.68 E 2.30 13.12
W-61 18.0 98.40 E 4.10 44.28
W-62 12.0 49.20 D 1.64 6.56 18.04
W-63 12.0 49.20 E 19.68
W-65 15.0 55.76 E 1.31 22.96
W-66 13.0 52.48 E/D 3.28 9.84 S
W-67 9.5 65.60 E 6.56
W-68 13.0 65.60 E 8.20
W-69 8.5 157.44 D 1.31 4.92 8.20
W-70 8.0 98.40 D 4.92
W-73 13.0 E 0.82 3.28
W-78 5.0 57.40 D 1.31 3.28 6.56
W-80 6.0 78.72 D 0.33 1.64
W-81 8.0 E 6.56
W-82 6.5 65.60 D 3.28 6.56
W-91 15.0 16.40 0.82 3.28 S
W-92 18.0 22.96 D 1.31 3.28
W-93 10.0 26.24 E
W-94b 2 carbon samples
W-95 5.0 49.20 D 0.49 1.31 1.64
W-96 1.64 S
W-168 20.0 29.85 E 4.92 15.09
O-15 15.0 65.60 D 0.98 6.56 11.48 S
O-18 20.0 196.80 E 3.28
O-19a 12.0 39.36 E 8.20
O-19b 12.0 19.68 E 1.97
O-20 12.0 24.60 E 6.56
O-21 22.0 E
O-22 31.0 65.60 E 6.56
O-25 24.0 98.40 E 11.48
O-27 18.0 98.40 E 16.40 13.12
O-28 13.0 75.44 E 11.48
O-30 7.0 118.08 E 9.84
O-33 12.0 49.20 D 0.49 1.97 3.28 S
O-36 7.0 26.24 D 0.49 3.28 S
O-38 8.0 196.80 D 0.66 1.97 3.28 S
O-39 12.0 19.68 E 9.84
O-40 20.0 16.40 E 8.20
O-42 15.0 26.24 E 6.56
O-47a 18.0 19.68 E 3.28
O-47b 16.0 19.68 E 9.84
O-46 15.0 19.68 E 6.56
O-48 12.0 39.36 E 6.56
O-49 10.0 59.04 D 0.98 3.28 4.92 S
O-52 6.0 39.36 D 0.98 3.28 6.56 S
O-53 10.0 19.68 E 6.56
O-56 29.0 78.72 E 9.84
O-59 26.0 59.04 E 4.92
O-61 4.0 19.68 D 0.98 3.28 6.56 S
O-62 8.0 78.72 D 13.12 4.92
0-63 7.0 49.20 E 8.20
O-64a 6.0 98.40 D 0.98 8.20 3.28
O-64b 14.0 39.36 E 6.56
O-64c 8.0 68.88 E 8.20
O-65 20.0 147.60 E 6.56
O-66a 8.0 78.72 E 8.20
O-66b 21.0 78.72 E 6.56
O-66c 18.0 78.72 E 8.20
O-69 24.0 147.60 E 6.56
O-73 16.0 11.48 E 3.28
O-76 13.0 49.20 E 3.28
O-77 15.0 49.20 E 3.28
B-109 13.12 E 3.28 E
B-110 15.0 16.40 E
B-111 11.0 E 0.33 4.92 E
B-112 E 0.98 P
B-74 E 16.40 0.98 P
B-119 15.0 D 4.92 E
B-120 17.5 60.02 E 3.28 4.92 E
B-121 3.28
B-122 22.5 E
M-2 5.5 0.82 S
M-4 3.28 E
M-5 17.5 E 3.28
M-10 49.20 E
M-12 3.28 S
M-15 6.5 D 0.82 3.28 S
M-16 5.5 D 6.56 S
M-17 7.0 131.20 D 3.28
M-18 14.5 D 3.28
M-41 13.0 E 1.64 9.84 E
M-50 6.0 150.88 E
M-51 13.12 E
M-52 14.0 26.24 E
M-53 16.0 78.72 E
M-54 10.0 E
M-66 8.0 78.72 E
M-67 29.0 45.92 E
M-69 17.0 E 0.82 S
M-70 28.0 E
M-71 32.0 52.48 D 1.64 S
M-76 30.0 19.68 E
M-77 10.0 36.08 E 6.56
M-81 5.0 29.52 D 0.82 1.64 1.64 S
M-82 5.0 55.76 D 0.82 1.64 1.64 S
M-83 8.0 D 0.82 3.28 13.12 S
M-84 7.0 29.52 E
M-86 26.24 E
M-88 26.0
M-93 15.0 26.24 E 6.56
M-99 8.0 D 3.28 9.84 6.56 S
M-100 10.0 E 13.12
M-101 23.0 E 3.28
M-102 15.0 36.08 E 3.28
M-123 32.0 E
M-129 6.0 39.36 E
M-130 E 1.64 3.28 E
M-131 15.0 32.80 E 0.82 3.28 E
M-134 9.0 E 1.64 2.20
M-148 8.0 82.00 E
M-149 25.0 D 1.64 6.56 9.84
M-153 22.0 124.64 D 0.82 6.56 3.28 S
M-156 114.80 E
M-172 17.0 E 6.56
M-173 15.0 157.44 E/D 3.28 9.84
AVERAGE 13.75 66.17 1.32 5.05 7.32
MEDIAN 12.00 54.12 0.98 3.28 6.56
STD DEV 6.52 46.13 0.83 3.41 5.62
MAX 32.00 246.00 3.28 16.40 44.28
MIN 4.00 11.48 0.33 0.82 0.98
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