Selection and Design of Channel Rehabilitation Methods
Table 6.1
Annual Sediment Yield for Monitoring Reaches Surveyed in 1993, 1994, 1995, and 1996
ANNUAL SEDIMENT YIELD (cubic yards)
Site
Reach No.
1993
1994
1995
1996
Abiaca 6
1
15,369
24,482
20,972
1,319
Fannegusha
1
42,529
45,722
32,709
34,851
Harland
1
22,108
30,027
22,669
24,711
Harland 23
1
36,056
46,149
34,371
37,812
Hickahala
1
26,403
33,247
39,944
36,554
Hickahala
2
52,377
35,031
60,740
58,953
Hotopha
1
111,480
133,137
71,568
20,867
Lick
1
42,837
61,262
52,443
25,842
Long
1
15,880
40,367
32,866
28,069
Long
2
39,410
33,859
25,513
11,017
Long
3
60,559
81,830
58,578
32,311
Long
4
36,171
18,180
16,014
24,612
Otoucalofa
1
26,409
22,171
26,278
32,545
Redbanks
1
53,303
42,414
51,215
49,923
Sykes
1
47,773
49,850
68,073
87,471
Worsham
1
79,347
90,796
83,030
79,569
Worsham
2
11,543
15,876
9,114
18,932
E. Worsham
1
52,761
55,610
38,390
101,079
M. Worsham
1
22,059
19,498
19,352
16,655
M. Worsham
2
25,061
18,343
3,575
16,186
M. Worsham
3
23,576
11,273
6,762
5,103
M. Worsham
4
8,033
9,680
7,715
8,477
W. Worsham
1
26,853
62,153
24,927
26,118
W. Worsham
2
44,312
43,218
33,152
27,539
W. Worsham
3
48,269
20,903
17,432
15,502
W. Worsham
4
140,714
58,983
66,282
72,063
ALL DATA
Annual Sediment Yield (cubic yards)
1,111,192
1,104,061
923,684
894,080
Percentage of 1993 Sediment Yield
1%
17%
20%
REACHES WITHOUT GRADE CONTROL
Annual Sediment Yield (cubic yards)
414,397
522,416
476,140
446,588
Percentage of 1993 Sediment Yield
-26%
-15%
-8%
REACHES WITH GRADE CONTROL
Annual Sediment Yield (cubic yards)
696,795
581,645
447,544
447,492
Percentage of 1993 Sediment Yield
17%
36%
36%
231
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