Table 10. Sources of sediment yield data for Oregon and California watersheds.
[Pour point: refers to outlet of contributing drainage basin. Abbreviations: km2, square kilometer; km/km2, kilometer per square kilometer; m/yr, millimeter per year; SPI, sediment production index; km-1, kilometer per square kilometer; km2/yr, square kilometer per year; –, no data available]
River |
Pour point latitude |
Pour point longitude |
Basin area
(km2) |
Mean slope (percent) |
Drainage density (km/km2) |
Mean
annual precipi-
tation
(m/yr) |
SPI
(km-1) |
Bedload yield |
Suspended yield |
Totalyield |
Period of record |
Method |
Notes and assumptions
regarding fraction of
total load carried as
bedload |
Source |
(metric tons/km2/yr) |
Chetco River,
Oregon |
42.123 |
-124.187 |
701 |
0.45 |
1.37 |
3.10 |
0.62 |
221 |
– |
– |
1970–2008 |
Bedload equations |
|
1 |
Smith River,
California |
41.949 |
-124.209 |
1,863 |
0.38 |
2.73 |
2.75 |
1.04 |
84 |
250 |
334 |
1938–2005 |
Bedload equations |
|
2 |
Pistol River,
Oregon |
42.276 |
-124.408 |
272 |
0.33 |
1.76 |
3.14 |
0.59 |
180 |
– |
910 |
1940–1991 |
Landslide volumes |
Bedload 20 percent of total,
as per Redwood and Smith rivers |
3 |
Flynn Creek,
Oregon |
44.539 |
-123.853 |
2.2 |
0.25 |
1.12 |
2.28 |
0.28 |
16 |
– |
– |
1959–1973 |
Bedload sampling |
|
4 |
Clackamas River Oregon |
River Mill
Reservoir |
45.299 |
-122.351 |
1,762 |
0.31 |
2.29 |
1.55 |
0.72 |
19 |
– |
62 |
1905–1965 |
Reservoir survey |
Bedload 30 percent of total,
based on sediment sampling in
River Mill Reservoir |
5 |
North Fork
Revervoir |
45.243 |
-122.280 |
1,728 |
0.32 |
2.30 |
2.00 |
0.73 |
59 |
– |
197 |
1958–2000 |
Reservoir survey |
|
5 |
Harriet Lake |
45.074 |
-121.965 |
337 |
0.18 |
1.22 |
1.61 |
0.22 |
2.7 |
– |
9.1 |
1924–1985 |
Reservoir survey |
|
5 |
Combined5 |
45.299 |
-122.351 |
1,762 |
0.31 |
2.29 |
1.99 |
0.72 |
31 |
– |
102 |
1905–2000 |
Reservoir survey |
|
5 |
Redwood Creek, California |
Blue Lake |
40.906 |
-123.815 |
175 |
0.33 |
1.16 |
2.34 |
0.38 |
496 |
– |
2,480 |
1945–1980 |
Bedload sampling |
Bedload 20 percent of total
(Mary Ann Madej,
U.S. Geological Survey, written commun.,
May 28, 2009) not included in
regression due to extensive landuse affects |
6 |
Orick |
41.299 |
-124.051 |
713 |
0.34 |
1.17 |
2.06 |
0.39 |
420 |
– |
2,100 |
1945–1980 |
Bedload sampling |
|
6 |
Oak Creek,
Oregon |
44.605 |
-123.333 |
7.4 |
0.30 |
0.81 |
1.68 |
0.24 |
10 |
– |
– |
1980 |
Bedload sampling |
Limited flow data available |
7 |
McKenzie River, Oregon |
HJ Andrews
watershed 1,
pre-treatment |
44.219 |
-122.244 |
0.9 |
0.43 |
2.84 |
2.37 |
1.22 |
3.0 |
14 |
18 |
1958–1966 |
Bedload sampling |
Not included in regression due to
direct affects of land use and
small basin size |
8 |
HJ Andrews
watershed 1,
post-treatment |
|
|
|
|
|
|
|
60 |
170 |
230 |
1967–1988 |
Bedload sampling |
|
8 |
HJ Andrews
watershed 2 |
44.212 |
-122.245 |
0.7 |
0.48 |
2.61 |
2.32 |
1.26 |
9.0 |
16 |
25 |
1958–1988 |
Bedload sampling |
|
8 |
HJ Andrews
watershed 3,
pre-treatment |
44.208 |
-122.258 |
1.0 |
0.51 |
2.66 |
2.27 |
1.36 |
14 |
150 |
170 |
1958–1963 |
Bedload sampling |
|
8 |
HJ Andrews
watershed 3,
post-treatment |
|
|
|
|
|
|
|
560 |
260 |
820 |
1964–1988 |
Bedload sampling |
|
8 |
Deschutes River, Oregon |
Lake Billy
Chinook,
Deschutes arm |
44.526 |
-121.299 |
5,600 |
0.08 |
0.65 |
0.66 |
0.05 |
2.2 |
– |
4.4 |
1964–1998 |
ReservoirDeltaSurvey |
Bedload 50 percent of total,
from delta sediment surveys |
9 |
Lake Billy
Chinook,
Crooked River arm |
44.514 |
-121.266 |
4,162 |
0.08 |
1.32 |
0.30 |
0.11 |
3.1 |
– |
6.1 |
1964–1998 |
ReservoirDeltaSurvey |
Bedload 50 percent of total,
from delta sediment surveys |
9 |
Prineville
Reservoir |
44.111 |
-120.789 |
6,901 |
0.12 |
2.09 |
0.37 |
0.25 |
5.2 |
– |
26 |
1960–1998 |
ReservoirSurvey |
Bedload 20 percent of total,
regional value |
9 |
Ochoco Reservoir |
44.299 |
-120.727 |
753 |
0.25 |
1.65 |
0.46 |
0.41 |
16.1 |
– |
80 |
1920–1990 |
ReservoirSurvey |
Bedload 20 percent of total,
regional value |
9 |
Klamath River, California |
Iron Gate
Revervoir,
Camp/Dutch Creek |
41.973 |
-122.436 |
51 |
0.34 |
3.92 |
0.62 |
1.33 |
24.2 |
– |
48 |
1963–2003 |
ReservoirDeltaSurvey |
Bedload 50 percent of total,
based on this study’s estimate |
10 |
Iron Gate
Revervoir,
Jenny Creek |
41.977 |
-122.399 |
500 |
0.15 |
2.01 |
0.70 |
0.31 |
3.3 |
– |
6.7 |
1963–2003 |
ReservoirDeltaSurvey |
|
10 |
Iron Gate
Revervoir,
Scotch Creek |
41.974 |
-122.439 |
47 |
0.34 |
4.93 |
0.61 |
1.67 |
32.0 |
– |
64 |
1963–2003 |
ReservoirDeltaSurvey |
|
10 |
McKenzie River, Oregon |
Smith Reservoir |
44.333 |
-122.047 |
35 |
0.39 |
2.12 |
2.55 |
0.83 |
53 |
– |
251 |
1963–2004 |
ReservoirSurvey |
Bedload 21 percent of total,
estimated in source study from
measured ratios in HJ Andrews
experimental watersheds |
11 |
Trail Bridge
Reservoir,
Mckenzie Arm |
44.282 |
-122.044 |
56 |
0.17 |
1.38 |
2.24 |
0.23 |
4.0 |
– |
20 |
1963–2004 |
ReservoirSurvey |
|
11 |
Trail Bridge
Reservoir,
Smith Arm |
44.279 |
-122.050 |
19 |
0.39 |
2.63 |
2.13 |
1.03 |
57 |
– |
273 |
1963–2004 |
ReservoirSurvey |
|
11 |
North Umpqua River, Oregon |
Lemolo Lake |
43.312 |
-122.160 |
186 |
0.18 |
1.04 |
1.60 |
0.19 |
40 |
– |
200 |
1954–1992 |
ReservoirSurvey |
Bedload 20 percent of total,
as estimated by this study |
12 |
Stump Lake |
43.246 |
-122.281 |
103 |
0.16 |
0.49 |
1.46 |
0.08 |
24 |
– |
120 |
1953–1992 |
ReservoirSurvey |
Bedload 20 percent of total,
as estimated by this study |
12 |
Hagg Lake,
Oregon |
45.472 |
-123.202 |
96 |
0.26 |
2.86 |
1.73 |
0.74 |
49 |
– |
247 |
1974–2001 |
ReservoirSurvey |
Bedload 20 percent of total,
as estimated by this study |
13 |
Dorena Lake,
Oregon |
43.787 |
-122.955 |
680 |
0.38 |
3.59 |
1.62 |
1.37 |
22 |
– |
108 |
1949–1998 |
ReservoirSurvey |
Bedload 20 percent of total,
as estimated by this study |
14 |
Detroit Lake, Oregon |
Santiam Arm |
44.711 |
-122.116 |
572 |
0.28 |
3.39 |
2.19 |
0.94 |
7.3 |
– |
– |
1953–2003 |
Reservoir Delta Survey |
Survey assumed 80 percent of
deposition was coarse bedload |
15 |
Brightenbush Arm |
44.739 |
-122.152 |
280 |
0.42 |
3.92 |
2.06 |
1.65 |
23.5 |
– |
– |
1953–2003 |
Reservoir Delta Survey |
|
15 |
Blowout Arm |
44.681 |
-122.193 |
137 |
0.38 |
4.50 |
2.26 |
1.72 |
25.1 |
– |
– |
1953–2003 |
Reservoir Delta Survey |
|
15 |
|
First posted September 29, 2011
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