Field Observations and Evaluations of Streambed Scour At Bridges
APPENDIX A:PIER SCOUR FIELD DATA
Table 24. Pier scour observations, continued.
Meaurement |
Site |
State |
Date |
Time |
Pier |
Upstream/ Downstream |
Pier Type |
Pier Shape |
Pier Width (m) |
Pier Length (m) |
Skew (deg) |
Velocity (m/s) |
Depth (m) |
Debris Effects |
Bed Material |
D16 (mm) |
D50 (mm) |
D84 (mm) |
D95 (mm) |
Grad-ation |
Scour Depth (m) |
Ac-curacy (m) |
141 |
57 |
IL |
8/12/1993 |
– |
11 |
Upstream |
Single |
Square |
4.1 |
11.6 |
4 |
2.0 |
22.4 |
Insignificant |
Noncohesive |
0.30 |
0.60 |
1.30 |
4.20 |
2.1 |
6.2 |
0.6 |
142 |
57 |
IL |
9/13/1993 |
– |
11 |
Upstream |
Single |
Square |
4.7 |
11.6 |
4 |
1.8 |
16.7 |
Insignificant |
Noncohesive |
0.30 |
0.60 |
1.30 |
4.20 |
2.1 |
6.5 |
0.6 |
143 |
18 |
IN |
11/13/1992 |
12:30 |
1 |
Downstream |
Single |
Round |
0.9 |
10.2 |
0 |
0.3 |
5.1 |
Unknown |
Noncohesive |
0.25 |
0.50 |
2.25 |
8.00 |
3.0 |
0.4 |
0.2 |
144 |
18 |
IN |
11/13/1992 |
10:30 |
2 |
Upstream |
Single |
Round |
0.9 |
10.2 |
0 |
0.8 |
5.9 |
Unknown |
Noncohesive |
0.25 |
0.50 |
2.25 |
8.00 |
3.0 |
1.0 |
0.2 |
145 |
19 |
IN |
1/3/1991 |
11:00 |
8 |
Upstream |
Single |
Round |
0.9 |
10.5 |
5 |
1.6 |
9.4 |
Unknown |
Noncohesive |
0.24 |
0.34 |
0.34 |
0.55 |
1.4 |
0.7 |
0.2 |
146 |
19 |
IN |
1/3/1991 |
11:45 |
8 |
Downstream |
Single |
Round |
0.9 |
10.5 |
5 |
1.6 |
9.4 |
Unknown |
Noncohesive |
0.24 |
0.34 |
0.34 |
0.55 |
1.4 |
0.5 |
0.2 |
147 |
20 |
IN |
1/3/1991 |
12:30 |
2 |
Upstream |
Single |
Round |
0.9 |
14.5 |
5 |
1.1 |
3.4 |
Unknown |
Noncohesive |
0.24 |
0.90 |
4.20 |
7.00 |
4.2 |
0.4 |
0.2 |
148 |
20 |
IN |
1/4/1991 |
12:00 |
2 |
Upstream |
Single |
Round |
0.9 |
14.5 |
5 |
1.0 |
3.2 |
Unknown |
Noncohesive |
0.24 |
0.90 |
4.20 |
7.00 |
4.2 |
0.4 |
0.2 |
149 |
20 |
IN |
1/4/1991 |
13:00 |
2 |
Downstream |
Single |
Round |
0.9 |
14.5 |
5 |
1.0 |
3.2 |
Unknown |
Noncohesive |
0.24 |
0.90 |
4.20 |
7.00 |
4.2 |
0.2 |
0.2 |
150 |
20 |
IN |
1/3/1991 |
12:30 |
3 |
Upstream |
Single |
Round |
0.9 |
13.1 |
0 |
1.3 |
5.1 |
Unknown |
Noncohesive |
0.24 |
0.90 |
4.20 |
7.00 |
4.2 |
0.7 |
0.2 |
151 |
20 |
IN |
1/3/1991 |
12:30 |
4 |
Upstream |
Single |
Round |
0.6 |
12.8 |
10 |
1.6 |
6.6 |
Unknown |
Noncohesive |
0.24 |
0.90 |
4.20 |
7.00 |
4.2 |
1.1 |
0.2 |
152 |
20 |
IN |
1/4/1991 |
12:00 |
4 |
Upstream |
Single |
Round |
0.6 |
12.8 |
10 |
1.9 |
6.2 |
Unknown |
Noncohesive |
0.24 |
0.90 |
4.20 |
7.00 |
4.2 |
1.2 |
0.2 |
153 |
21 |
LA |
5/19/1990 |
14:20 |
4 |
Upstream |
Single |
Sharp |
4.3 |
16.5 |
0 |
2.6 |
11.6 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
3.7 |
0.6 |
154 |
21 |
LA |
5/19/1990 |
15:30 |
4 |
Downstream |
Single |
Sharp |
4.3 |
16.5 |
0 |
2.6 |
12.3 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
0.9 |
0.3 |
155 |
21 |
LA |
5/22/1990 |
13:35 |
4 |
Upstream |
Single |
Sharp |
4.3 |
16.5 |
0 |
2.1 |
9.4 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
3.5 |
0.3 |
156 |
21 |
LA |
5/22/1990 |
14:45 |
4 |
Downstream |
Single |
Sharp |
4.3 |
16.5 |
0 |
2.1 |
9.4 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
1.1 |
0.3 |
157 |
21 |
LA |
5/19/1990 |
14:20 |
5 |
Upstream |
Single |
Sharp |
4.3 |
16.5 |
0 |
3.2 |
11.9 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
7.0 |
0.6 |
158 |
21 |
LA |
5/19/1990 |
15:30 |
5 |
Downstream |
Single |
Sharp |
4.3 |
16.5 |
0 |
3.2 |
12.6 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
5.2 |
0.6 |
159 |
21 |
LA |
5/22/1990 |
13:35 |
5 |
Upstream |
Single |
Sharp |
4.3 |
16.5 |
0 |
2.9 |
9.8 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
7.7 |
0.3 |
160 |
21 |
LA |
5/22/1990 |
14:45 |
5 |
Downstream |
Single |
Sharp |
4.3 |
16.5 |
0 |
2.9 |
9.8 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
5.6 |
0.3 |
161 |
22 |
LA |
5/17/1990 |
13:30 |
4 |
Upstream |
Single |
Round |
4.3 |
12.2 |
0 |
2.5 |
11.7 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
4.4 |
0.3 |
162 |
22 |
LA |
5/17/1990 |
15:10 |
4 |
Downstream |
Single |
Round |
4.3 |
12.2 |
0 |
2.5 |
11.7 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
3.9 |
0.6 |
163 |
22 |
LA |
5/19/1990 |
10:25 |
4 |
Upstream |
Single |
Round |
4.3 |
12.2 |
0 |
2.6 |
10.8 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
3.3 |
0.6 |
164 |
22 |
LA |
5/19/1990 |
12:55 |
4 |
Downstream |
Single |
Round |
4.3 |
12.2 |
0 |
2.6 |
11.3 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
2.1 |
0.3 |
165 |
22 |
LA |
5/22/1990 |
8:55 |
4 |
Downstream |
Single |
Round |
4.3 |
12.2 |
0 |
2.1 |
9.3 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
4.2 |
0.3 |
166 |
22 |
LA |
5/22/1990 |
10:30 |
4 |
Upstream |
Single |
Round |
4.3 |
12.2 |
0 |
2.1 |
9.3 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
3.8 |
0.3 |
167 |
22 |
LA |
5/17/1990 |
13:30 |
5 |
Upstream |
Single |
Round |
4.3 |
12.2 |
0 |
3.0 |
12.0 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
4.5 |
0.3 |
168 |
22 |
LA |
5/17/1990 |
15:10 |
5 |
Downstream |
Single |
Round |
4.3 |
12.2 |
0 |
3.0 |
11.7 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
4.8 |
0.6 |
169 |
22 |
LA |
5/19/1990 |
10:25 |
5 |
Upstream |
Single |
Round |
4.3 |
12.2 |
0 |
3.2 |
11.2 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
5.5 |
0.3 |
170 |
22 |
LA |
5/19/1990 |
12:55 |
5 |
Downstream |
Single |
Round |
4.3 |
12.2 |
0 |
3.2 |
11.7 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
5.2 |
0.3 |
171 |
22 |
LA |
5/22/1990 |
8:55 |
5 |
Downstream |
Single |
Round |
4.3 |
12.2 |
0 |
2.9 |
9.6 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
5.6 |
0.6 |
172 |
22 |
LA |
5/22/1990 |
10:30 |
5 |
Upstream |
Single |
Round |
4.3 |
12.2 |
0 |
2.9 |
9.7 |
Insignificant |
Noncohesive |
0.20 |
0.30 |
0.40 |
0.50 |
1.4 |
3.7 |
0.3 |
173 |
24 |
MD |
6/23/1972 |
17:30 |
1 |
Upstream |
Single |
Round |
1.2 |
9.8 |
0 |
0.8 |
3.5 |
Unknown |
Unknown |
13.00 |
22.00 |
76.00 |
160.00 |
2.4 |
0.4 |
0.3 |
174 |
24 |
MD |
9/25/1975 |
19:00 |
1 |
Upstream |
Single |
Round |
1.2 |
9.8 |
0 |
1.3 |
3.1 |
Unknown |
Unknown |
13.00 |
22.00 |
76.00 |
160.00 |
2.4 |
0.4 |
0.3 |
175 |
24 |
MD |
6/23/1972 |
17:30 |
2 |
Upstream |
Single |
Round |
1.2 |
9.8 |
0 |
1.1 |
2.4 |
Unknown |
Unknown |
13.00 |
22.00 |
76.00 |
160.00 |
2.4 |
0.7 |
0.3 |
Table 24. Pier scour observations, continued.
Measurement |
Site |
State |
Date |
Time |
Pier |
Upstream/ Downstream |
Pier Type |
Pier Shape |
Pier Width (m) |
Pier Length (m) |
Skew (deg) |
Velocity (m/s) |
Depth (m) |
Debris Effects |
Bed Material |
D16 (mm) |
D50 (mm) |
D84 (mm) |
D95 (mm) |
Grad-ation |
Scour Depth (m) |
Ac-curacy (m) |
176 |
24 |
MD |
9/25/1975 |
19:00 |
2 |
Upstream |
Single |
Round |
1.2 |
9.8 |
0 |
1.6 |
2.4 |
Unknown |
Uknown |
13.00 |
22.00 |
76.00 |
160.00 |
2.4 |
0.5 |
0.3 |
177 |
24 |
MD |
5/29/1990 |
20:30 |
2 |
Upstream |
Single |
Round |
1.2 |
9.8 |
0 |
1.0 |
1.9 |
Unknown |
Uknown |
13.00 |
22.00 |
76.00 |
160.00 |
2.4 |
0.3 |
0.3 |
178 |
24 |
MD |
10/23/1990 |
15:30 |
2 |
Upstream |
Single |
Round |
1.2 |
9.8 |
0 |
1.6 |
2.0 |
Unknown |
Unknown |
13.00 |
22.00 |
76.00 |
160.00 |
2.4 |
0.4 |
0.3 |
179 |
24 |
MD |
10/23/1990 |
20:00 |
2 |
Upstream |
Single |
Round |
1.2 |
9.8 |
0 |
1.6 |
3.1 |
Unknown |
Unknown |
13.00 |
22.00 |
76.00 |
160.00 |
2.4 |
0.5 |
0.3 |
180 |
25 |
MD |
2/23/1989 |
11:00 |
CNTR |
Upstream |
Single |
Square |
1.2 |
10.7 |
0 |
0.1 |
1.1 |
Unknown |
Unknown |
0.18 |
0.38 |
0.94 |
2.60 |
2.3 |
0.7 |
0.3 |
181 |
25 |
MD |
3/25/1989 |
14:00 |
CNTR |
Upstream |
Single |
Square |
1.2 |
10.7 |
0 |
0.4 |
2.2 |
Unknown |
Unknown |
0.18 |
0.38 |
0.94 |
2.60 |
2.3 |
0.7 |
0.3 |
182 |
25 |
MD |
7/28/1991 |
10:30 |
CNTR |
Upstream |
Single |
Square |
1.2 |
10.7 |
0 |
0.2 |
1.5 |
Unknown |
Unknown |
0.18 |
0.38 |
0.94 |
2.60 |
2.3 |
0.6 |
0.3 |
183 |
25 |
MD |
2/23/1989 |
11:00 |
LEFT |
Upstream |
Single |
Square |
1.2 |
10.7 |
0 |
0.7 |
1.9 |
Unknown |
Noncohesive |
0.18 |
0.38 |
0.94 |
2.60 |
2.3 |
1.2 |
0.3 |
184 |
25 |
MD |
3/25/1989 |
14:00 |
LEFT |
Upstream |
Single |
Square |
1.2 |
10.7 |
0 |
0.8 |
3.1 |
Unknown |
Noncohesive |
0.18 |
0.38 |
0.94 |
2.60 |
2.3 |
1.6 |
0.3 |
185 |
25 |
MD |
7/28/1991 |
10:30 |
LEFT |
Upstream |
Single |
Square |
1.2 |
10.7 |
0 |
0.8 |
2.2 |
Unknown |
Unknown |
0.18 |
0.38 |
0.94 |
2.60 |
2.3 |
1.3 |
0.3 |
186 |
25 |
MD |
2/23/1989 |
11:00 |
RT |
Upstream |
Single |
Square |
1.2 |
10.7 |
0 |
0.3 |
1.1 |
Unknown |
Unknown |
0.18 |
0.38 |
0.94 |
2.60 |
2.3 |
0.5 |
0.3 |
187 |
25 |
MD |
2/23/1989 |
14:00 |
RT |
Upstream |
Single |
Square |
1.2 |
10.7 |
0 |
0.6 |
2.1 |
Unknown |
Unknown |
0.18 |
0.38 |
0.94 |
2.60 |
2.3 |
0.7 |
0.3 |
188 |
25 |
MD |
7/28/1991 |
10:30 |
RT |
Upstream |
Single |
Square |
1.2 |
10.7 |
0 |
0.3 |
1.5 |
Unknown |
Unknown |
0.18 |
0.38 |
0.94 |
2.60 |
2.3 |
0.7 |
0.3 |
189 |
23 |
MD |
7/13/1990 |
13:00 |
LEFT |
Upstream |
Single |
Sharp |
1.5 |
12.7 |
0 |
2.3 |
2.4 |
Unknown |
Unknown |
68.00 |
108.00 |
233.00 |
350.00 |
1.8 |
0.3 |
0.3 |
190 |
23 |
MD |
4/1/1993 |
9:30 |
LEFT |
Upstream |
Single |
Sharp |
1.5 |
12.7 |
0 |
2.1 |
2.1 |
Unknown |
Unknown |
68.00 |
108.00 |
233.00 |
350.00 |
1.8 |
0.4 |
0.3 |
191 |
23 |
MD |
7/13/1990 |
13:00 |
RT |
Upstream |
Single |
Sharp |
1.5 |
12.7 |
0 |
2.6 |
3.0 |
Unknown |
Unknown |
68.00 |
108.00 |
233.00 |
350.00 |
1.8 |
0.8 |
0.3 |
192 |
23 |
MD |
4/1/1993 |
9:30 |
RT |
Upstream |
Single |
Sharp |
1.5 |
12.7 |
0 |
1.9 |
2.4 |
Unknown |
Unknown |
68.00 |
108.00 |
233.00 |
350.00 |
1.8 |
0.5 |
0.3 |
193 |
58 |
MN |
3/28/1969 |
14:30 |
9 |
Upstream |
Single |
Square |
5.0 |
9.8 |
0 |
0.7 |
5.9 |
Insignificant |
Noncohesive |
0.20 |
0.48 |
0.67 |
1.10 |
21.8 |
0.9 |
0.0 |
194 |
58 |
MN |
4/3/1969 |
11:57 |
9 |
Upstream |
Single |
Square |
4.8 |
9.8 |
0 |
0.8 |
6.5 |
Insignificant |
Noncohesive |
0.20 |
0.48 |
0.67 |
1.10 |
1.8 |
0.9 |
0.1 |
195 |
58 |
MN |
4/9/1969 |
11:52 |
9 |
Upstream |
Single |
Square |
4.5 |
9.8 |
0 |
1.2 |
8.5 |
Insignificant |
Noncohesive |
0.20 |
0.48 |
0.67 |
1.10 |
1.8 |
0.8 |
0.1 |
196 |
58 |
MN |
4/15/1969 |
12:40 |
9 |
Upstream |
Single |
Square |
5.3 |
9.8 |
0 |
1.6 |
11.8 |
Insignificant |
Noncohesive |
0.20 |
0.48 |
0.67 |
1.10 |
1.8 |
4.6 |
0.2 |
197 |
58 |
MN |
4/23/1969 |
11:37 |
9 |
Upstream |
Single |
Square |
5.4 |
9.8 |
0 |
1.4 |
9.5 |
Insignificant |
Noncohesive |
0.20 |
0.48 |
0.67 |
1.10 |
1.8 |
4.2 |
0.2 |
198 |
58 |
MN |
4/28/1969 |
12:15 |
9 |
Upstream |
Single |
Square |
5.5 |
9.8 |
0 |
1.1 |
8.7 |
Insignificant |
Noncohesive |
0.20 |
0.48 |
0.67 |
1.10 |
1.8 |
3.1 |
0.1 |
199 |
58 |
MN |
6/4/1969 |
13:55 |
9 |
Upstream |
Single |
Square |
5.1 |
9.8 |
0 |
0.5 |
5.7 |
Unknown |
Noncohesive |
0.20 |
0.48 |
0.67 |
1.10 |
1.8 |
0.7 |
0.0 |
200 |
58 |
MN |
3/28/1969 |
14:30 |
10 |
Upstream |
Single |
Square |
3.3 |
9.8 |
0 |
0.7 |
4.3 |
Insignificant |
Noncohesive |
0.20 |
0.48 |
6.70 |
1.10 |
1.8 |
0.5 |
0.0 |
201 |
58 |
MN |
4/3/1969 |
11:57 |
10 |
Upstream |
Single |
Square |
3.3 |
9.8 |
0 |
0.8 |
4.8 |
Insignificant |
Noncohesive |
0.20 |
0.48 |
6.70 |
1.10 |
1.8 |
0.4 |
0.0 |
202 |
58 |
MN |
4/9/1969 |
11:52 |
10 |
Upstream |
Single |
Square |
3.3 |
9.8 |
0 |
1.2 |
6.7 |
Insignificant |
Noncohesive |
0.20 |
0.48 |
6.70 |
1.10 |
1.8 |
0.9 |
0.0 |
203 |
58 |
MN |
4/15/1969 |
12:40 |
10 |
Upstream |
Single |
Square |
3.1 |
9.8 |
0 |
1.6 |
9.8 |
Insignificant |
Noncohesive |
0.20 |
0.48 |
0.67 |
1.10 |
1.8 |
0.7 |
0.0 |
204 |
58 |
MN |
4/23/1969 |
11:37 |
10 |
Upstream |
Single |
Square |
3.7 |
9.8 |
0 |
1.4 |
9.8 |
Insignificant |
Noncohesive |
0.20 |
0.48 |
0.67 |
1.10 |
1.8 |
0.8 |
0.0 |
205 |
58 |
MN |
4/28/1969 |
12:15 |
10 |
Upstream |
Single |
Square |
3.7 |
9.8 |
0 |
1.1 |
7.9 |
Insignificant |
Noncohesive |
0.20 |
0.48 |
0.67 |
1.10 |
1.8 |
0.4 |
0.0 |
206 |
58 |
MN |
6/4/1969 |
13:35 |
10 |
Upstream |
Single |
Square |
4.1 |
9.8 |
0 |
0.5 |
4.7 |
Insignificant |
Noncohesive |
0.20 |
0.48 |
0.67 |
1.10 |
1.8 |
0.5 |
0.0 |
207 |
75 |
MO |
7/14/1993 |
– |
8 |
Upstream |
Single |
Square |
2.8 |
9.0 |
0 |
0.0 |
12.6 |
Insignificant |
Noncohesive |
0.28 |
0.70 |
2.10 |
4.60 |
2.7 |
3.7 |
0.9 |
208 |
75 |
MO |
7/17/1993 |
– |
8 |
Upstream |
Single |
Square |
2.8 |
9.0 |
0 |
1.9 |
14.3 |
Insignificant |
Noncohesive |
0.28 |
0.70 |
2.10 |
4.60 |
2.7 |
4.3 |
0.6 |
209 |
75 |
MO |
7/19/1993 |
– |
8 |
Upstream |
Single |
Square |
2.8 |
9.0 |
0 |
2.0 |
15.1 |
Insignificant |
Unknown |
0.28 |
0.70 |
2.10 |
4.60 |
2.7 |
3.8 |
0.6 |
210 |
75 |
MO |
8/17/1993 |
– |
8 |
Upstream |
Single |
Square |
2.8 |
9.0 |
0 |
1.2 |
12.9 |
Insignificant |
Noncohesive |
0.28 |
0.70 |
2.10 |
4.60 |
2.7 |
3.8 |
0.6 |
Table 24. Pier scour observations, continued.
Measurement |
Site |
State |
Date |
Time |
Pier |
Upstream/ Downstream |
Pier Type |
Pier Shape |
Pier Width (m) |
Pier Length (m) |
Skew (deg) |
Velocity (m/s) |
Depth (m) |
Debris Effects |
Bed Material |
D16 (mm) |
D50 (mm) |
D84 (mm) |
D95 (mm) |
Gradation |
Scour Depth (m) |
Accuracy (m) |
211 |
75 |
MO |
9/16/1993 |
– |
8 |
Upstream |
Single |
Square |
2.8 |
9.0 |
0 |
1.1 |
11.0 |
Insignificant |
Noncohesive |
0.28 |
0.70 |
2.10 |
4.60 |
2.7 |
4.3 |
0.6 |
212 |
75 |
MO |
7/14/1993 |
– |
9 |
Upstream |
Single |
Square |
2.9 |
9.0 |
0 |
0.0 |
13.3 |
Insignificant |
Noncohesive |
0.28 |
0.70 |
2.10 |
4.60 |
2.7 |
4.0 |
0.9 |
213 |
75 |
MO |
7/17/1993 |
– |
9 |
Upstream |
Single |
Square |
2.9 |
9.0 |
0 |
2.3 |
14.6 |
Insignificant |
Noncohesive |
0.28 |
0.70 |
2.10 |
4.60 |
2.7 |
4.0 |
0.6 |
214 |
75 |
MO |
7/19/1993 |
– |
9 |
Upstream |
Single |
Square |
2.9 |
9.0 |
0 |
2.0 |
15.4 |
Insignificant |
Noncohesive |
0.28 |
0.70 |
2.10 |
4.60 |
2.7 |
3.7 |
0.6 |
215 |
75 |
MO |
8/17/1993 |
– |
9 |
Upstream |
Single |
Square |
2.9 |
9.0 |
0 |
1.4 |
12.9 |
Insignificant |
Noncohesive |
0.28 |
0.70 |
2.10 |
4.60 |
2.7 |
3.7 |
0.6 |
216 |
75 |
MO |
9/16/1993 |
– |
9 |
Upstream |
Single |
Square |
2.9 |
9.0 |
0 |
1.2 |
11.0 |
Insignificant |
Noncohesive |
0.28 |
0.70 |
2.10 |
4.60 |
2.7 |
3.7 |
0.6 |
217 |
76 |
MO |
7/15/1993 |
– |
10 |
Upstream |
Single |
Sharp |
5.5 |
20.7 |
0 |
2.6 |
20.0 |
Insignificant |
Noncohesive |
0.55 |
0.96 |
2.50 |
4.03 |
2.1 |
4.1 |
0.6 |
218 |
28 |
MS |
1/25/1990 |
9:00 |
3 |
Upstream |
Single |
Cylindrical |
2.4 |
2.4 |
0 |
1.9 |
3.0 |
Insignificant |
Noncohesive |
0.49 |
7.51 |
23.20 |
27.00 |
6.9 |
1.2 |
0.3 |
219 |
28 |
MS |
8/27/1992 |
10:10 |
3 |
Downstream |
Single |
Cylindrical |
2.4 |
2.4 |
0 |
1.9 |
2.6 |
Substantial |
Noncohesive |
0.49 |
7.51 |
23.20 |
27.00 |
6.9 |
1.0 |
0.3 |
220 |
28 |
MS |
12/21/1972 |
6:00 |
4 |
Upstream |
Single |
Cylindrical |
2.4 |
2.4 |
0 |
2.1 |
3.9 |
Unknown |
Noncohesive |
0.49 |
7.51 |
23.20 |
27.00 |
6.9 |
0.9 |
0.2 |
221 |
28 |
MS |
4/25/1973 |
5:30 |
4 |
Upstream |
Single |
Cylindrical |
2.4 |
2.4 |
0 |
1.9 |
2.7 |
Unknown |
Noncohesive |
0.49 |
7.51 |
23.20 |
27.00 |
6.9 |
0.9 |
0.2 |
222 |
28 |
MS |
1/25/1990 |
9:00 |
4 |
Upstream |
Single |
Cylindrical |
2.4 |
2.4 |
0 |
2.1 |
2.9 |
Insignificant |
Noncohesive |
0.49 |
7.51 |
23.20 |
27.00 |
6.9 |
1.2 |
0.3 |
223 |
28 |
MS |
8/27/1992 |
11:10 |
4 |
Upstream |
Single |
Cylindrical |
2.4 |
2.4 |
0 |
2.3 |
2.7 |
Insignificant |
Noncohesive |
0.49 |
7.51 |
23.20 |
27.00 |
6.9 |
2.0 |
0.3 |
224 |
28 |
MS |
1/25/1990 |
9:00 |
5 |
Upstream |
Single |
Cylindrical |
2.4 |
2.4 |
0 |
1.7 |
3.0 |
Insignificant |
Noncohesive |
0.49 |
7.51 |
23.20 |
27.00 |
6.9 |
1.4 |
0.3 |
225 |
28 |
MS |
8/27/1992 |
10:55 |
5 |
Upstream |
Single |
Cylindrical |
2.4 |
2.4 |
0 |
2.0 |
3.1 |
Insignificant |
Noncohesive |
0.49 |
7.51 |
23.20 |
27.00 |
6.9 |
1.4 |
0.3 |
226 |
26 |
MS |
2/25/1991 |
14:30 |
12L |
Upstream |
Group |
Square |
0.4 |
8.0 |
28 |
0.8 |
2.9 |
Insignificant |
Cohesive |
– |
– |
– |
– |
– |
0.6 |
0.2 |
227 |
26 |
MS |
5/1/1991 |
10:00 |
12L |
Downstream |
Group |
Square |
0.4 |
8.0 |
23 |
0.8 |
5.1 |
Insignificant |
Cohesive |
– |
– |
– |
– |
– |
0.8 |
0.2 |
228 |
26 |
MS |
2/25/1991 |
14:30 |
14L |
Upstream |
Group |
Square |
0.4 |
8.0 |
18 |
1.0 |
7.3 |
Insignificant |
Cohesive |
– |
– |
– |
– |
– |
0.0 |
0.2 |
229 |
26 |
MS |
5/1/1991 |
10:00 |
14L |
Upstream |
Group |
Square |
0.4 |
8.0 |
16 |
1.3 |
6.4 |
Insignificant |
Cohesive |
– |
– |
– |
– |
– |
0.0 |
0.2 |
230 |
26 |
MS |
2/25/1991 |
14:30 |
15L |
Upstream |
Group |
Square |
0.4 |
8.0 |
16 |
1.2 |
8.9 |
Insignificant |
Noncohesive |
0.36 |
0.54 |
1.20 |
2.90 |
1.8 |
0.4 |
0.2 |
231 |
26 |
MS |
5/1/1991 |
10:00 |
15L |
Downstream |
Group |
Square |
0.4 |
8.0 |
14 |
1.3 |
8.8 |
Insignificant |
Noncohesive |
0.36 |
0.54 |
1.20 |
2.90 |
1.8 |
0.9 |
0.2 |
232 |
26 |
MS |
2/25/1991 |
14:30 |
16L |
Upstream |
Group |
Square |
0.8 |
8.0 |
16 |
1.2 |
8.8 |
Insignificant |
Noncohesive |
0.36 |
0.54 |
1.20 |
2.90 |
1.8 |
0.4 |
0.2 |
233 |
26 |
MS |
5/1/1991 |
10:00 |
16L |
Upstream |
Group |
Square |
0.8 |
8.0 |
8 |
1.4 |
8.2 |
Moderate |
Noncohesive |
0.36 |
0.54 |
1.20 |
2.90 |
1.8 |
0.4 |
0.2 |
234 |
26 |
MS |
1/31/1990 |
15:00 |
17L |
Upstream |
Group |
Cylindrical |
1.8 |
6.2 |
11 |
0.9 |
5.3 |
Insignificant |
Noncohesive |
0.26 |
0.39 |
0.90 |
1.30 |
1.9 |
0.6 |
0.2 |
235 |
26 |
MS |
2/25/1991 |
14:30 |
17L |
Upstream |
Group |
Cylindrical |
1.6 |
6.2 |
16 |
1.0 |
6.7 |
Insignificant |
Noncohesive |
0.26 |
0.39 |
0.90 |
1.30 |
1.9 |
1.1 |
0.2 |
236 |
26 |
MS |
5/1/1991 |
10:00 |
17L |
Upstream |
Group |
Cylindrical |
1.4 |
6.2 |
11 |
1.1 |
6.5 |
Insignificant |
Noncohesive |
0.26 |
0.39 |
0.90 |
1.30 |
1.9 |
1.2 |
0.2 |
237 |
26 |
MS |
1/31/1990 |
15:00 |
18L |
Upstream |
Group |
Cylindrical |
1.8 |
6.2 |
11 |
0.4 |
5.3 |
Moderate |
Noncohesive |
0.26 |
0.39 |
0.90 |
1.30 |
1.9 |
0.5 |
0.2 |
238 |
26 |
MS |
2/25/1991 |
14:30 |
18L |
Upstream |
Group |
Cylindrical |
1.6 |
6.2 |
16 |
0.6 |
6.4 |
Moderate |
Noncohesive |
0.26 |
0.39 |
0.90 |
1.30 |
1.9 |
0.6 |
0.2 |
239 |
26 |
MS |
5/1/1991 |
10:00 |
18L |
Downstream |
Group |
Cylindrical |
1.5 |
6.2 |
14 |
0.7 |
6.8 |
Insignificant |
Noncohesive |
0.26 |
0.39 |
0.90 |
1.30 |
1.9 |
0.8 |
0.2 |
240 |
27 |
MS |
5/1/1991 |
11:20 |
15R |
Upstream |
Group |
Square |
0.4 |
8.0 |
16 |
1.6 |
9.3 |
Insignificant |
Noncohesive |
0.36 |
0.54 |
1.20 |
2.90 |
1.8 |
0.4 |
0.2 |
241 |
27 |
MS |
2/25/1991 |
15:20 |
16R |
Upstream |
Group |
Square |
0.8 |
8.0 |
16 |
1.2 |
8.4 |
Insignificant |
Noncohesive |
0.36 |
0.54 |
1.20 |
2.90 |
1.8 |
0.9 |
0.2 |
242 |
27 |
MS |
5/1/1991 |
11:20 |
16R |
Downstream |
Group |
Square |
0.8 |
8.0 |
11 |
1.4 |
8.1 |
Insignificant |
Noncohesive |
0.36 |
0.54 |
1.20 |
2.90 |
1.8 |
0.6 |
0.2 |
243 |
27 |
MS |
2/25/1991 |
15:20 |
17R |
Upstream |
Group |
Cylindrical |
1.7 |
6.2 |
16 |
0.9 |
7.1 |
Insignificant |
Noncohesive |
0.26 |
0.39 |
0.90 |
1.30 |
1.9 |
0.5 |
0.2 |
244 |
27 |
MS |
5/1/1991 |
11:20 |
17R |
Upstream |
Group |
Cylindrical |
1.5 |
6.2 |
8 |
1.0 |
6.6 |
Insignificant |
Noncohesive |
0.26 |
0.39 |
0.90 |
1.30 |
1.9 |
1.2 |
0.2 |
245 |
27 |
MS |
2/25/1991 |
15:20 |
18R |
Upstream |
Group |
Cylindrical |
1.6 |
6.2 |
20 |
0.7 |
6.2 |
Insignificant |
Noncohesive |
0.26 |
0.39 |
0.90 |
1.30 |
1.9 |
1.7 |
0.2 |
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