Appendix A. Volume-Average Annual and June–October 

Scenario Results for the Link-Keno Reach, Upper Klamath 

River, Oregon
46 Modeling the Water-Quality Effects of Changes to the Klamath River Upstream of Keno Dam, Oregon Table A1. Scenarios 1 and 2 annual volume-average results for the Link-Keno reach of the Klamath River, Oregon. [2007 runs were bracketed by also using total inorganic carbon calculated with pH during low-bloom conditions (leftmost values when a range is given for the Link River, Lost River Diversion Channel, and Klamath Straits Drain inputs. Other years were run without modifying the pH of boundary inputs. The effects of recalculating total inorganic carbon with low-bloom pH values were manifested only in the simulated pH and in no other simulated constituents in the Link-Keno reach. Abbreviations: TMDL, total maximum daily load; °C, degrees Celsius; mg/L, milligram per liter; μg/L, microgram per liter] Scenario Annual in-reach volume average Water temperature (°C) Dissolved oxygen (mg/L) pH Ammonia (mg/L) Nitrate (mg/L) Ortho- phosphorus (mg/L) Chlorophyll a (μg/L) Particulate organic carbon (mg/L) Dissolved organic carbon (mg/L) Total phosphorus (mg/L) Total nitrogen (mg/L) Sediment (1st-order) (mg/L) 2006 1a Base case 11.2 7.91 8.12 0.398 0.161 0.078 41.1 1.72 8.25 0.165 1.84 15.5 1b Sources at TMDL allocations 11.2 8.00 8.15 0.368 0.093 0.044 38.4 1.54 7.24 0.120 1.59 13.7 2a Link River at TMDL target 11.2 9.08 8.41 0.294 0.166 0.050 14.6 0.70 3.97 0.091 1.06 7.1 2b Link River and sources at TMDL 11.2 9.18 8.46 0.263 0.097 0.016 11.6 0.51 2.96 0.046 0.81 5.4 2007 1a Base case 11.8 7.60 7.97 0.531 0.204 0.076 36.5 1.84 8.22 0.163 2.03 17.0 1b Sources at TMDL allocations 11.8 7.68 7.99–7.99 0.513 0.183 0.048 35.2 1.73 7.47 0.128 1.88 15.6 2a Link River at TMDL target 11.8 9.00 8.10–8.35 0.395 0.212 0.043 11.0 0.65 3.49 0.079 1.14 6.7 2b Link River and sources at TMDL 11.8 9.07 8.13–8.40 0.376 0.190 0.015 9.4 0.53 2.73 0.044 0.99 5.5 2008 1a Base case 11.2 6.75 8.06 0.626 0.199 0.073 32.9 2.54 7.97 0.164 2.17 23.7 1b Sources at TMDL allocations 11.2 6.82 8.09 0.600 0.178 0.045 31.3 2.39 7.13 0.128 2.00 21.2 2a Link River at TMDL target 11.2 8.35 8.45 0.528 0.211 0.047 12.2 0.96 4.06 0.091 1.38 9.2 2b Link River and sources at TMDL 11.2 8.43 8.51 0.501 0.188 0.019 10.3 0.81 3.23 0.054 1.21 7.1 2009 1a Base case 11.4 6.95 8.03 0.518 0.159 0.061 22.9 2.67 7.08 0.145 1.93 23.3 1b Sources at TMDL allocations 11.4 7.01 8.05 0.506 0.152 0.037 22.1 2.54 6.40 0.115 1.81 21.4 2a Link River at TMDL target 11.4 8.64 8.43 0.436 0.176 0.039 7.9 0.89 3.30 0.075 1.15 8.2 2b Link River and sources at TMDL 11.4 8.71 8.46 0.423 0.169 0.015 6.9 0.76 2.62 0.045 1.02 6.6
Appendix A 47

Table A2. Scenarios 1 and 2 June through October volume-average results for the Link-Keno reach of the Klamath River, Oregon. [2007 runs were bracketed by also using total inorganic carbon calculated with pH during low-bloom conditions (leftmost values when a range is given for the Link River, Lost River Diversion Channel, and Klamath Straits Drain inputs. Other years were run without modifying the pH of boundary inputs. The effects of recalculating total inorganic carbon with low-bloom pH values were manifested only in the simulated pH and in no other simulated constituents in the Link-Keno reach. Abbreviations: TMDL, total maximum daily load; °C, degrees Celsius; mg/L, milligram per liter; μg/L, microgram per liter]

Scenario

June through October in-reach volume average

Water 

temperature

(°C)

Dissolved 

oxygen

(mg/L)

pH Ammonia (mg/L) Nitrate (mg/L) Ortho- phosphorus (mg/L) Chlorophyll a (μg/L) Particulate organic carbon (mg/L) Dissolved organic carbon (mg/L) Total phosphorus (mg/L) Total nitrogen (mg/L) Sediment (1st-order) (mg/L)

2006

1a Base case 18.9 4.42 8.34 0.458 0.060 0.105 84.1 3.12 10.6 0.224 2.27 18.7

1b Sources at TMDL allocations 18.9 4.60 8.39 0.436 0.051 0.073 81.2 2.97 9.51 0.181 2.09 17.1

2a Link River at TMDL target 18.9 6.81 8.91 0.225 0.073 0.054 28.4 1.10 4.77 0.105 1.05 6.4

2b Link River and sources at TMDL 18.9 6.99 8.99 0.199 0.061 0.021 24.8 0.95 3.72 0.062 0.86 5.0

2007

1a Base case 18.5 4.60 8.18 0.566 0.071 0.121 85.0 3.51 11.0 0.247 2.50 24.4

1b Sources at TMDL allocations 18.5 4.70 8.20–8.21 0.549 0.065 0.090 82.9 3.41 10.3 0.208 2.37 23.0

2a Link River at TMDL target 18.5 7.62 8.27–8.94 0.232 0.091 0.055 25.0 1.16 4.51 0.105 1.05 6.7

2b Link River and sources at TMDL 18.5 7.72 8.32–9.00 0.212 0.083 0.024 22.2 1.05 3.71 0.066 0.91 5.8

2008

1a Base case 18.7 3.17 8.43 0.448 0.044 0.093 67.0 4.61 9.65 0.217 2.32 34.0

1b Sources at TMDL allocations 18.7 3.26 8.47 0.426 0.040 0.066 65.1 4.53 8.92 0.183 2.19 31.4

2a Link River at TMDL target 18.7 6.51 9.24 0.220 0.072 0.050 23.8 1.51 4.36 0.101 1.05 9.5

2b Link River and sources at TMDL 18.7 6.63 9.32 0.195 0.064 0.023 21.3 1.42 3.63 0.067 0.91 7.6

2009

1a Base case 18.4 2.85 8.18 0.463 0.067 0.081 43.3 5.08 7.95 0.194 2.20 32.6

1b Sources at TMDL allocations 18.4 2.92 8.20 0.453 0.067 0.059 42.7 5.00 7.50 0.168 2.12 30.5

2a Link River at TMDL target 18.5 6.44 9.01 0.264 0.111 0.040 14.3 1.51 3.32 0.082 1.00 8.0

2b Link River and sources at TMDL 18.5 6.55 9.05 0.252 0.110 0.019 13.2 1.43 2.86 0.056 0.91 6.6
48 Modeling the Water-Quality Effects of Changes to the Klamath River Upstream of Keno Dam, Oregon Table A3. Scenario 5 annual volume-average results for the Link-Keno reach of the Klamath River, Oregon.

[Abbreviations: LRDC, Lost River Diversion Channel; KSD, Klamath Straits Drain; OM, organic matter; DO, dissolved oxygen; °C, degrees Celsius; mg/L, milligram per liter; μg/L, microgram per liter]

Scenario

Annual in-reach volume average

Water 

temperature

(°C)

Dissolved 

oxygen

(mg/L)

pH Ammonia (mg/L) Nitrate (mg/L) Ortho- phosphorus (mg/L) Chlorophyll a (μg/L) Particulate organic carbon (mg/L) Dissolved organic carbon (mg/L) Total phosphorus (mg/L) Total nitrogen (mg/L) Sediment (1st-order) (mg/L)

2006

1a Base case 11.2 7.91 8.12 0.398 0.161 0.078 41.1 1.72 8.25 0.165 1.84 15.55a Shunt, LRDC and KSD current 11.2 7.06 7.96 0.456 0.151 0.082 55.6 2.49 8.31 0.176 1.99 25.25b Shunt, LRDC and KSD intermediate 11.2 7.07 7.97 0.453 0.150 0.080 55.3 2.47 8.17 0.172 1.97 24.95c Shunt, LRDC and KSD zero OM, 

nutrients and algae, DO at saturation

11.2 7.37 8.05 0.426 0.080 0.060 52.7 2.31 7.23 0.143 1.73 22.4

2007

1a Base case 11.8 7.60 7.97 0.531 0.204 0.076 36.5 1.84 8.22 0.163 2.03 17.0

5a Shunt, LRDC and KSD current 11.8 6.43 7.78 0.607 0.189 0.080 54.9 2.97 8.33 0.179 2.25 35.15b Shunt, LRDC and KSD intermediate 11.8 6.44 7.79 0.605 0.188 0.079 54.7 2.96 8.24 0.177 2.23 34.9

5c Shunt, LRDC and KSD zero OM, 

nutrients and algae, DO at saturation

11.8 6.67 7.85 0.584 0.155 0.066 53.2 2.85 7.42 0.156 2.06 32.4

2008

1a Base case 11.2 6.75 8.06 0.626 0.199 0.073 32.9 2.54 7.97 0.164 2.17 23.7

5a Shunt, LRDC and KSD current 11.2 5.58 7.88 0.676 0.185 0.076 49.0 4.40 8.07 0.184 2.46 59.0

5b Shunt, LRDC and KSD intermediate 11.2 5.58 7.88 0.674 0.184 0.075 48.8 4.39 7.97 0.182 2.44 58.7

5c Shunt, LRDC and KSD zero OM, 

nutrients and algae, DO at saturation

11.2 5.89 7.93 0.648 0.151 0.061 47.0 4.25 7.07 0.160 2.25 54.2

2009

1a Base case 11.4 6.95 8.03 0.518 0.159 0.061 22.9 2.67 7.08 0.145 1.93 23.3

5a Shunt, LRDC and KSD current 11.3 5.88 7.87 0.553 0.143 0.063 34.2 4.73 7.14 0.166 2.22 58.8

5b Shunt, LRDC and KSD intermediate 11.3 5.88 7.88 0.550 0.142 0.061 34.0 4.72 7.03 0.163 2.20 58.5

5c Shunt, LRDC and KSD zero OM, 

nutrients and algae, DO at saturation

11.3 6.04 7.94 0.532 0.114 0.050 33.0 4.60 6.32 0.145 2.05 55.4
Appendix A 49

Table A4. Scenario 5 June through October volume-average results for the Link-Keno reach of the Klamath River, Oregon.[Abbreviations: LRDC, Lost River Diversion Channel; KSD, Klamath Straits Drain; OM, organic matter; DO, dissolved oxygen; °C, degrees Celsius; mg/L, milligram per liter; μg/L, microgram per liter]

Scenario

June through October in-reach volume average

Water 

temperature

(°C)

Dissolved 

oxygen

(mg/L)

pH Ammonia (mg/L) Nitrate (mg/L) Ortho- phosphorus (mg/L) Chlorophyll a (μg/L) Particulate organic carbon (mg/L) Dissolved organic carbon (mg/L) Total phosphorus (mg/L) Total nitrogen (mg/L) Sediment (1st-order) (mg/L)

2006

1a Base case 18.9 4.42 8.34 0.458 0.060 0.105 84.1 3.12 10.6 0.224 2.27 18.7

5a Shunt, LRDC and KSD current 18.8 2.75 7.97 0.587 0.033 0.113 119.5 5.00 10.7 0.250 2.64 37.5

5b Shunt, LRDC and KSD intermediate 18.8 2.77 7.99 0.581 0.033 0.108 118.7 4.97 10.4 0.242 2.59 37.0

5c Shunt, LRDC and KSD zero OM, 

nutrients and algae, DO at saturation

18.8 2.95 8.03 0.570 0.030 0.096 116.3 4.85 9.58 0.222 2.45 34.3

2007

1a Base case 18.5 4.60 8.18 0.566 0.071 0.121 85.0 3.51 11.0 0.247 2.50 24.4

5a Shunt, LRDC and KSD current 18.5 2.34 7.79 0.741 0.036 0.131 130.0 6.14 11.3 0.283 3.02 62.5

5b Shunt, LRDC and KSD intermediate 18.5 2.35 7.80 0.737 0.035 0.128 129.8 6.12 11.2 0.279 2.99 62.2

5c Shunt, LRDC and KSD zero OM, 

nutrients and algae, DO at saturation

18.5 2.50 7.82 0.725 0.032 0.116 127.4 6.02 10.4 0.259 2.86 59.0

2008

1a Base case 18.7 3.17 8.43 0.448 0.044 0.093 67.0 4.61 9.65 0.217 2.32 34.0

5a Shunt, LRDC and KSD current 18.7 1.64 8.09 0.541 0.021 0.098 105.4 9.14 9.91 0.264 3.01 100.4

5b Shunt, LRDC and KSD intermediate 18.7 1.64 8.10 0.536 0.020 0.096 105.1 9.13 9.74 0.260 2.98 99.9

5c Shunt, LRDC and KSD zero OM, 

nutrients and algae, DO at saturation

18.7 1.71 8.12 0.524 0.018 0.085 103.1 9.05 9.02 0.242 2.86 94.7

2009

1a Base case 18.4 2.85 8.18 0.463 0.067 0.081 43.3 5.08 7.95 0.194 2.20 32.6

5a Shunt, LRDC and KSD current 18.4 1.45 7.91 0.533 0.036 0.085 67.0 9.94 8.11 0.242 2.88 97.4

5b Shunt, LRDC and KSD intermediate 18.4 1.45 7.92 0.529 0.035 0.082 66.8 9.92 7.95 0.238 2.86 96.9

5c Shunt, LRDC and KSD zero OM, 

nutrients and algae, DO at saturation

18.4 1.52 7.93 0.520 0.035 0.076 66.1 9.86 7.58 0.228 2.79 93.2
50 Modeling the Water-Quality Effects of Changes to the Klamath River Upstream of Keno Dam, Oregon Table A5. Scenario 6 annual volume average results for the Link-Keno reach of the Klamath River, Oregon.

[Abbreviations: °C, degrees Celsius; mg/L, milligram per liter; μg/L, microgram per liter]

Scenario

Annual in-reach volume average

Water 

temperature

(°C)

Dissolved 

oxygen

(mg/L)

pH Ammonia (mg/L) Nitrate (mg/L) Ortho- phosphorus (mg/L) Chlorophyll a (μg/L) Particulate organic carbon (mg/L) Dissolved organic carbon (mg/L) Total phosphorus (mg/L) Total nitrogen (mg/L) Sediment (1st-order) (mg/L)

2006

1a Base case 11.2 7.91 8.12 0.398 0.161 0.078 41.1 1.72 8.25 0.165 1.84 15.5

6a 25 percent decrease, June–October 11.2 8.25 8.19 0.368 0.163 0.077 34.3 1.46 8.23 0.161 1.77 13.3

6b 50 percent decrease, June–October 11.2 8.59 8.26 0.336 0.165 0.076 27.2 1.20 8.20 0.158 1.71 11.2

6c 90 percent decrease, June–October 11.2 9.13 8.36 0.279 0.166 0.074 14.5 0.74 8.16 0.151 1.59 8.0

6d 25 percent decrease, entire year 11.2 8.29 8.19 0.366 0.163 0.077 33.4 1.39 8.23 0.161 1.76 12.4

6e 50 percent decrease, entire year 11.2 8.67 8.27 0.332 0.165 0.076 25.4 1.05 8.20 0.156 1.69 9.5

6f 90 percent decrease, entire year 11.2 9.27 8.39 0.273 0.166 0.074 11.3 0.48 8.16 0.149 1.55 5.1

2007

1a Base case 11.8 7.60 7.97 0.531 0.204 0.076 36.5 1.84 8.22 0.163 2.03 17.0

6a 25 percent decrease, June–October 11.8 7.95 8.04 0.495 0.208 0.074 30.0 1.56 8.19 0.159 1.95 14.3

6b 50 percent decrease, June–October 11.8 8.31 8.13 0.456 0.210 0.073 23.0 1.28 8.15 0.155 1.88 12.0

6c 90 percent decrease, June–October 11.8 8.87 8.27 0.383 0.212 0.071 9.80 0.78 8.10 0.148 1.73 9.0

6d 25 percent decrease, entire year 11.8 8.00 8.06 0.495 0.208 0.074 29.8 1.48 8.19 0.159 1.94 13.2

6e 50 percent decrease, entire year 11.8 8.42 8.16 0.455 0.211 0.073 22.7 1.12 8.16 0.154 1.86 9.9

6f 90 percent decrease, entire year 11.8 9.08 8.32 0.380 0.212 0.071 9.14 0.49 8.10 0.146 1.69 5.3

2008

1a Base case 11.2 6.75 8.06 0.626 0.199 0.073 32.9 2.54 7.97 0.164 2.17 23.7

6a 25 percent decrease, June–October 11.2 7.18 8.14 0.599 0.204 0.072 27.7 2.12 7.94 0.159 2.09 19.1

6b 50 percent decrease, June–October 11.2 7.64 8.25 0.568 0.208 0.070 22.3 1.71 7.91 0.154 2.01 15.8

6c 90 percent decrease, June–October 11.2 8.43 8.41 0.508 0.211 0.068 12.0 1.03 7.87 0.145 1.86 12.2

6d 25 percent decrease, entire year 11.2 7.24 8.15 0.599 0.204 0.072 27.6 2.01 7.94 0.158 2.08 17.4

6e 50 percent decrease, entire year 11.2 7.78 8.27 0.567 0.208 0.070 22.0 1.49 7.91 0.152 1.98 12.6

6f 90 percent decrease, entire year 11.2 8.68 8.46 0.505 0.211 0.068 11.5 0.63 7.87 0.142 1.81 6.6

2009

1a Base case 11.4 6.95 8.03 0.518 0.159 0.061 22.9 2.67 7.08 0.145 1.93 23.3

6a 25 percent decrease, June–October 11.4 7.37 8.11 0.498 0.166 0.059 19.8 2.20 7.06 0.140 1.85 19.8

6b 50 percent decrease, June–October 11.4 7.84 8.20 0.473 0.172 0.058 16.6 1.75 7.04 0.135 1.77 14.8

6c 90 percent decrease, June–October 11.4 8.69 8.36 0.426 0.177 0.056 10.4 1.01 7.01 0.126 1.63 10.7

6d 25 percent decrease, entire year 11.4 7.44 8.12 0.496 0.166 0.059 19.4 2.08 7.06 0.139 1.83 16.9

6e 50 percent decrease, entire year 11.4 8.01 8.24 0.470 0.172 0.058 15.6 1.50 7.04 0.132 1.74 12.0

6f 90 percent decrease, entire year 11.4 8.98 8.42 0.419 0.177 0.056 8.6 0.57 7.01 0.122 1.57 5.9
Appendix A 51

Table A6. Scenario 6 June through October volume average results for the Link-Keno reach of the Klamath River, Oregon.[Abbreviations: °C, degrees Celsius; mg/L, milligram per liter; μg/L, microgram per liter]

Scenario

June through October in-reach volume average

Water 

temperature

(°C)

Dissolved 

oxygen

(mg/L)

pH Ammonia (mg/L) Nitrate (mg/L) Ortho- phosphorus (mg/L) Chlorophyll a (μg/L) Particulate organic carbon (mg/L) Dissolved organic carbon (mg/L) Total phosphorus (mg/L) Total nitrogen (mg/L) Sediment (1st-order) (mg/L)

2006

1a Base case 18.9 4.42 8.34 0.458 0.060 0.105 84.1 3.12 10.6 0.224 2.27 18.7

6a 25 percent decrease, June–October 18.9 5.15 8.50 0.390 0.066 0.103 66.9 2.46 10.5 0.215 2.12 14.4

6b 50 percent decrease, June–October 18.9 5.89 8.67 0.315 0.070 0.100 48.8 1.78 10.4 0.206 1.95 10.5

6c 90 percent decrease, June–October 18.9 7.05 8.90 0.181 0.074 0.096 16.5 0.62 10.3 0.192 1.66 4.6

6d 25 percent decrease, entire year 18.9 5.18 8.51 0.389 0.066 0.102 66.8 2.45 10.5 0.215 2.12 14.1

6e 50 percent decrease, entire year 18.9 5.95 8.68 0.313 0.071 0.100 48.6 1.77 10.4 0.206 1.95 9.9

6f 90 percent decrease, entire year 18.9 7.17 8.93 0.176 0.074 0.096 16.1 0.61 10.3 0.191 1.65 3.7

2007

1a Base case 18.5 4.60 8.18 0.566 0.071 0.121 85.0 3.51 11.0 0.247 2.50 24.4

6a 25 percent decrease, June–October 18.5 5.38 8.36 0.479 0.080 0.117 68.2 2.80 11.0 0.237 2.32 18.6

6b 50 percent decrease, June–October 18.5 6.19 8.57 0.383 0.086 0.114 50.0 2.06 10.9 0.226 2.13 13.7

6c 90 percent decrease, June–October 18.5 7.47 8.90 0.199 0.090 0.110 15.6 0.77 10.7 0.210 1.76 7.3

6d 25 percent decrease, entire year 18.5 5.45 8.38 0.479 0.080 0.117 68.1 2.79 11.0 0.237 2.32 17.6

6e 50 percent decrease, entire year 18.5 6.35 8.61 0.381 0.087 0.114 49.9 2.06 10.9 0.226 2.13 12.1

6f 90 percent decrease, entire year 18.5 7.77 8.95 0.194 0.091 0.110 15.4 0.77 10.7 0.209 1.76 4.5

2008

1a Base case 18.7 3.17 8.43 0.448 0.044 0.093 67.0 4.61 9.65 0.217 2.32 34.0

6a 25 percent decrease, June–October 18.7 4.03 8.62 0.387 0.056 0.090 53.8 3.55 9.58 0.204 2.13 24.7

6b 50 percent decrease, June–October 18.7 5.06 8.88 0.313 0.065 0.087 39.8 2.51 9.51 0.191 1.92 18.0

6c 90 percent decrease, June–October 18.7 6.86 9.25 0.168 0.073 0.082 13.7 0.77 9.40 0.170 1.55 10.9

6d 25 percent decrease, entire year 18.7 4.10 8.64 0.387 0.056 0.090 53.8 3.54 9.58 0.204 2.13 22.9

6e 50 percent decrease, entire year 18.7 5.24 8.91 0.313 0.066 0.087 39.7 2.48 9.51 0.191 1.92 14.9

6f 90 percent decrease, entire year 18.7 7.21 9.30 0.166 0.074 0.082 13.5 0.74 9.40 0.170 1.54 5.6

2009

1a Base case 18.4 2.85 8.18 0.463 0.067 0.081 43.3 5.08 7.95 0.194 2.20 32.6

6a 25 percent decrease, June–October 18.4 3.70 8.36 0.415 0.084 0.078 35.3 3.88 7.90 0.180 2.01 23.0

6b 50 percent decrease, June–October 18.5 4.79 8.59 0.354 0.099 0.075 26.8 2.71 7.86 0.167 1.81 15.9

6c 90 percent decrease, June–October 18.5 6.77 8.97 0.236 0.112 0.070 10.8 0.82 7.79 0.145 1.45 7.91

6d 25 percent decrease, entire year 18.4 3.80 8.38 0.412 0.085 0.078 35.2 3.87 7.90 0.180 2.01 21.7

6e 50 percent decrease, entire year 18.5 5.00 8.63 0.348 0.101 0.075 26.5 2.69 7.86 0.166 1.80 13.7

6f 90 percent decrease, entire year 18.5 7.20 9.04 0.223 0.114 0.069 10.3 0.78 7.79 0.144 1.44 4.6
52 Modeling the Water-Quality Effects of Changes to the Klamath River Upstream of Keno Dam, Oregon Table A7. Scenario 7 annual volume average results for the Link-Keno reach of the Klamath River, Oregon. [Most scenarios routed the entire river flow through the wetlands; scenarios 7b and 7e treated 250 cubic feet per second (ft3/s). Abbreviations: Seg, model segment; °C, degrees Celsius; mg/L, milligram per liter; μg/L, microgram per liter] Scenario Annual in-reach volume average Water temperature (°C) Dissolved oxygen (mg/L) pH Ammonia (mg/L) Nitrate (mg/L) Ortho- phosphorus (mg/L) Chlorophyll a (μg/L) Particulate organic carbon (mg/L) Dissolved organic carbon (mg/L) Total phosphorus (mg/L) Total nitrogen (mg/L) Sediment (1st-order) (mg/L) 2006 1a Base case 11.2 7.91 8.12 0.398 0.161 0.078 41.1 1.72 8.25 0.165 1.84 15.5 7a Seg 28, 50 percent decrease 11.3 8.23 8.18 0.381 0.163 0.077 34.8 1.43 8.17 0.161 1.78 13.5 7b Seg 28, 50 percent decrease, 250 ft3/s 11.2 8.00 8.13 0.394 0.162 0.078 39.7 1.65 8.23 0.164 1.82 14.9 7c Seg 28, 90 percent decrease 11.3 8.47 8.23 0.365 0.164 0.077 29.0 1.18 8.10 0.157 1.72 12.3 7d Seg 54, 50 percent decrease 11.3 8.04 8.14 0.392 0.162 0.078 38.2 1.57 8.21 0.163 1.81 14.6 7e Seg 54, 50 percent decrease, 250 ft3/s 11.2 7.95 8.12 0.396 0.161 0.078 40.4 1.68 8.24 0.164 1.83 15.2 7f Seg 54, 90 percent decrease 11.3 8.14 8.17 0.386 0.162 0.078 35.6 1.45 8.17 0.161 1.78 14.1 2007 1a Base case 11.8 7.60 7.97 0.531 0.204 0.076 36.5 1.84 8.22 0.163 2.03 17.0 7a Seg 28, 50 percent decrease 11.8 7.94 8.04 0.510 0.206 0.075 31.9 1.53 8.13 0.159 1.96 14.3 7b Seg 28, 50 percent decrease, 250 ft3/s 11.8 7.66 7.98 0.526 0.204 0.076 35.1 1.74 8.20 0.162 2.01 16.1 7c Seg 28, 90 percent decrease 11.8 8.22 8.09 0.492 0.208 0.074 27.2 1.26 8.04 0.155 1.89 12.8 7d Seg 54, 50 percent decrease 11.8 7.74 8.00 0.522 0.204 0.076 34.7 1.68 8.17 0.161 1.99 15.9 7e Seg 54, 50 percent decrease, 250 ft3/s 11.8 7.65 7.98 0.529 0.204 0.076 35.9 1.78 8.20 0.163 2.01 16.6 7f Seg 54, 90 percent decrease 11.8 7.86 8.02 0.516 0.205 0.075 32.9 1.55 8.13 0.159 1.96 15.3 2008 1a Base case 11.2 6.75 8.06 0.626 0.199 0.073 32.9 2.54 7.97 0.164 2.17 23.7 7a Seg 28, 50 percent decrease 11.2 7.11 8.11 0.612 0.202 0.072 28.9 2.10 7.87 0.159 2.10 19.3 7b Seg 28, 50 percent decrease, 250 ft3/s 11.2 6.85 8.07 0.622 0.201 0.073 31.8 2.40 7.94 0.162 2.15 22.2 7c Seg 28, 90 percent decrease 11.2 7.43 8.18 0.597 0.204 0.071 25.2 1.75 7.80 0.154 2.03 17.1 7d Seg 54, 50 percent decrease 11.2 6.90 8.08 0.621 0.200 0.073 31.3 2.32 7.91 0.162 2.13 21.9 7e Seg 54, 50 percent decrease, 250 ft3/s 11.2 6.80 8.06 0.624 0.200 0.073 32.4 2.46 7.95 0.163 2.16 23.1 7f Seg 54, 90 percent decrease 11.2 7.04 8.10 0.615 0.201 0.072 29.8 2.15 7.88 0.159 2.10 20.9 2009

1a Base case 11.4 6.95 8.03 0.518 0.159 0.061 22.9 2.67 7.08 0.145 1.93 23.3

7a Seg 28, 50 percent decrease 11.4 7.30 8.09 0.507 0.163 0.060 20.0 2.16 7.01 0.140 1.85 18.3

7b Seg 28, 50 percent decrease, 250 ft3/s 11.4 7.05 8.04 0.515 0.160 0.060 22.1 2.51 7.06 0.144 1.90 21.6

7c Seg 28, 90 percent decrease 11.4 7.64 8.15 0.492 0.165 0.059 17.1 1.77 6.96 0.135 1.78 15.8

7d Seg 54, 50 percent decrease 11.4 7.09 8.05 0.514 0.160 0.060 21.6 2.42 7.04 0.143 1.89 21.3

7e Seg 54, 50 percent decrease, 250 ft3/s 11.4 7.00 8.00 0.517 0.159 0.060 22.5 2.59 7.07 0.144 1.91 22.6

7f Seg 54, 90 percent decrease 11.4 7.24 8.08 0.508 0.160 0.060 20.4 2.23 7.01 0.140 1.85 20.2
Appendix A 53

Table A8. Scenario 7 June through October volume average results for the Link-Keno reach of the Klamath River, Oregon.[Most scenarios treated the entire river flow; scenarios 7b and 7e treated 250 cubic feet per second (ft3/s). Abbreviations: Seg, model segment; °C, degrees Celsius; mg/L, milligram per liter; μg/L, microgram 

per liter]

Scenario

June through October in-reach volume average

Water 

temperature

(°C)

Dissolved 

oxygen

(mg/L)

pH Ammonia (mg/L) Nitrate (mg/L) Ortho- phosphorus (mg/L) Chlorophyll a (μg/L) Particulate organic carbon (mg/L) Dissolved organic carbon (mg/L) Total phosphorus (mg/L) Total nitrogen (mg/L) Sediment (1st-order) (mg/L)

2006

1a Base case 18.9 4.42 8.34 0.458 0.060 0.105 84.1 3.12 10.6 0.224 2.27 18.7

7a Seg 28, 50 percent decrease 18.9 5.15 8.49 0.417 0.065 0.103 70.2 2.45 10.4 0.214 2.13 15.0

7b Seg 28, 50 percent decrease, 250 ft3/s 18.9 4.62 8.38 0.448 0.062 0.105 80.8 2.93 10.5 0.221 2.23 17.5

7c Seg 28, 90 percent decrease 18.9 5.71 8.61 0.378 0.067 0.102 57.2 1.89 10.2 0.207 1.99 12.8

7d Seg 54, 50 percent decrease 18.9 4.74 8.41 0.443 0.062 0.104 77.8 2.78 10.4 0.219 2.20 17.0

7e Seg 54, 50 percent decrease, 250 ft3/s 18.9 4.52 8.36 0.454 0.061 0.105 82.5 3.01 10.5 0.223 2.25 18.1

7f Seg 54, 90 percent decrease 18.9 4.99 8.46 0.429 0.062 0.104 72.3 2.51 10.4 0.216 2.14 16.1

2007

1a Base case 18.5 4.60 8.18 0.566 0.071 0.121 85.0 3.51 11.0 0.247 2.50 24.4

7a Seg 28, 50 percent decrease 18.4 5.41 8.34 0.515 0.078 0.118 73.6 2.78 10.8 0.236 2.33 18.5

7b Seg 28, 50 percent decrease, 250 ft3/s 18.4 4.76 8.20 0.553 0.072 0.120 81.4 3.26 11.0 0.244 2.45 22.4

7c Seg 28, 90 percent decrease 18.4 6.07 8.47 0.469 0.082 0.116 62.4 2.17 10.6 0.227 2.18 15.4

7d Seg 54, 50 percent decrease 18.4 4.96 8.25 0.544 0.072 0.120 80.5 3.15 10.9 0.242 2.42 21.9

7e Seg 54, 50 percent decrease, 250 ft3/s 18.5 4.73 8.20 0.560 0.072 0.120 83.5 3.38 11.0 0.245 2.48 23.4

7f Seg 54, 90 percent decrease 18.4 5.26 8.31 0.528 0.073 0.119 76.5 2.85 10.8 0.237 2.35 20.7

2008

1a Base case 18.7 3.17 8.43 0.448 0.044 0.093 67.0 4.61 9.65 0.217 2.32 34.0

7a Seg 28, 50 percent decrease 18.7 3.87 8.56 0.417 0.051 0.091 58.1 3.59 9.42 0.204 2.14 25.3

7b Seg 28, 50 percent decrease, 250 ft3/s 18.7 3.35 8.46 0.439 0.046 0.093 64.5 4.29 9.58 0.213 2.26 31.2

7c Seg 28, 90 percent decrease 18.8 4.61 8.71 0.379 0.055 0.090 49.6 2.79 9.26 0.194 1.98 21.0

7d Seg 54, 50 percent decrease 18.7 3.47 8.48 0.436 0.046 0.092 63.6 4.11 9.53 0.211 2.23 30.5

7e Seg 54, 50 percent decrease, 250 ft3/s 18.7 3.26 8.45 0.444 0.045 0.093 66.0 4.44 9.61 0.215 2.29 32.8

7f Seg 54, 90 percent decrease 18.7 3.79 8.54 0.421 0.047 0.092 60.5 3.73 9.43 0.206 2.16 28.7

2009

1a Base case 18.4 2.85 8.18 0.463 0.067 0.081 43.3 5.08 7.95 0.194 2.20 32.6

7a Seg 28, 50 percent decrease 18.5 3.56 8.30 0.437 0.076 0.079 37.4 3.91 7.78 0.181 2.01 23.0

7b Seg 28, 50 percent decrease, 250 ft3/s 18.5 3.03 8.21 0.456 0.070 0.080 41.6 4.71 7.90 0.190 2.14 29.4

7c Seg 28, 90 percent decrease 18.5 4.33 8.46 0.402 0.083 0.077 31.7 3.01 7.66 0.170 1.85 18.2

7d Seg 54, 50 percent decrease 18.5 3.15 8.23 0.453 0.069 0.080 40.9 4.51 7.86 0.188 2.11 28.7

7e Seg 54, 50 percent decrease, 250 ft3/s 18.5 2.95 8.20 0.460 0.068 0.080 42.5 4.88 7.92 0.192 2.17 31.2

7f Seg 54, 90 percent decrease 18.5 3.50 8.31 0.439 0.070 0.079 38.7 4.08 7.80 0.182 2.03 26.8
54 Modeling the Water-Quality Effects of Changes to the Klamath River Upstream of Keno Dam, Oregon Table A9. Scenario 8 annual volume average results for the Link-Keno reach of the Klamath River, Oregon. 

[Abbreviations: LRDC, Lost River Diversion Channel; KSD, Klamath Straits Drain; °C, degrees Celsius; mg/L, milligram per liter; μg/L, microgram per liter]

Scenario

Annual in-reach volume average

Water 

temperature

(°C)

Dissolved 

oxygen

(mg/L)

pH Ammonia (mg/L) Nitrate (mg/L) Ortho- phosphorus (mg/L) Chlorophyll a (μg/L) Particulate organic carbon (mg/L) Dissolved organic carbon (mg/L) Total phosphorus (mg/L) Total nitrogen (mg/L) Sediment (1st-order) (mg/L)

2006

1a Base case 11.2 7.91 8.12 0.398 0.161 0.078 41.1 1.72 8.25 0.165 1.84 15.58a Flow to LRDC 11.3 7.97 8.10 0.394 0.164 0.084 38.6 1.64 8.26 0.170 1.83 14.78b Flow to KSD 11.2 7.95 8.08 0.400 0.163 0.084 36.7 1.61 8.42 0.171 1.85 14.78c Flow to LRDC and KSD 11.3 7.96 8.09 0.397 0.164 0.084 37.5 1.62 8.34 0.170 1.84 14.7

2007

1a Base case 11.8 7.60 7.97 0.531 0.204 0.076 36.5 1.84 8.22 0.163 2.03 17.08a Flow to LRDC 11.9 7.56 7.96 0.523 0.206 0.081 33.9 1.73 8.13 0.166 1.99 16.18b Flow to KSD 11.8 7.64 7.94 0.546 0.207 0.083 31.3 1.69 8.44 0.171 2.05 16.1

8c Flow to LRDC and KSD 11.8 7.60 7.94 0.535 0.207 0.082 32.5 1.71 8.30 0.169 2.03 16.1

2008

1a Base case 11.2 6.75 8.06 0.626 0.199 0.073 32.9 2.54 7.97 0.164 2.17 23.7

8a Flow to LRDC 11.3 6.77 8.00 0.628 0.202 0.077 31.1 2.40 7.98 0.167 2.16 22.5

8b Flow to KSD 11.2 6.82 8.00 0.638 0.204 0.079 29.1 2.33 8.19 0.171 2.19 22.3

8c Flow to LRDC and KSD 11.2 6.79 8.01 0.633 0.203 0.078 30.1 2.37 8.08 0.169 2.18 22.4

2009

1a Base case 11.4 6.95 8.03 0.518 0.159 0.061 22.9 2.67 7.08 0.145 1.93 23.3

8a Flow to LRDC 11.4 6.96 8.02 0.520 0.159 0.067 22.2 2.53 7.08 0.151 1.91 22.1

8b Flow to KSD 11.3 7.00 7.99 0.524 0.159 0.066 20.9 2.46 7.33 0.151 1.94 22.2

8c Flow to LRDC and KSD 11.4 6.98 8.00 0.522 0.159 0.066 21.5 2.50 7.21 0.151 1.93 22.2
Appendix A 55

Table A10. Scenario 8 June through October volume average results for the Link-Keno reach of the Klamath River, Oregon. [Abbreviations: LRDC, Lost River Diversion Channel; KSD, Klamath Straits Drain; °C, degrees Celsius; mg/L, milligram per liter; μg/L, microgram per liter]

Scenario

Annual in-reach volume average

Water 

temperature

(°C)

Dissolved 

oxygen

(mg/L)

pH Ammonia (mg/L) Nitrate (mg/L) Ortho- phosphorus (mg/L) Chlorophyll a (μg/L) Particulate organic carbon (mg/L) Dissolved organic carbon (mg/L) Total phosphorus (mg/L) Total nitrogen (mg/L) Sediment (1st-order) (mg/L)

2006

1a Base case 18.9 4.42 8.34 0.458 0.060 0.105 84.1 3.12 10.6 0.224 2.27 18.78a Flow to LRDC 18.9 4.55 8.29 0.453 0.069 0.121 77.3 2.89 10.6 0.238 2.25 17.28b Flow to KSD 18.9 4.44 8.23 0.469 0.065 0.120 72.9 2.83 11.0 0.240 2.31 17.38c Flow to LRDC and KSD 18.9 4.49 8.26 0.460 0.067 0.119 74.8 2.86 10.8 0.238 2.28 17.3

2007

1a Base case 18.5 4.60 8.18 0.566 0.071 0.121 85.0 3.51 11.0 0.247 2.50 24.48a Flow to LRDC 18.4 4.52 8.14 0.548 0.078 0.132 77.4 3.20 10.8 0.253 2.42 22.6

8b Flow to KSD 18.5 4.62 8.08 0.609 0.078 0.140 71.5 3.13 11.6 0.268 2.58 22.5

8c Flow to LRDC and KSD 18.4 4.58 8.11 0.579 0.079 0.136 74.3 3.17 11.2 0.261 2.50 22.5

2008

1a Base case 18.7 3.17 8.43 0.448 0.044 0.093 67.0 4.61 9.65 0.217 2.32 34.0

8a Flow to LRDC 18.7 3.18 8.36 0.457 0.051 0.104 62.0 4.24 9.66 0.224 2.29 31.7

8b Flow to KSD 18.7 3.27 8.28 0.483 0.055 0.110 57.4 4.08 10.2 0.234 2.37 31.1

8c Flow to LRDC and KSD 18.7 3.21 8.32 0.470 0.053 0.106 59.7 4.17 9.94 0.229 2.33 31.6

2009

1a Base case 18.4 2.85 8.18 0.463 0.067 0.081 43.3 5.08 7.95 0.194 2.20 32.6

8a Flow to LRDC 18.5 2.86 8.15 0.470 0.068 0.097 41.1 4.69 7.96 0.207 2.16 30.6

8b Flow to KSD 18.5 2.92 8.08 0.479 0.067 0.094 38.2 4.54 8.61 0.209 2.23 30.4

8c Flow to LRDC and KSD 18.5 2.88 8.10 0.475 0.067 0.095 39.6 4.63 8.29 0.207 2.20 30.6
56 Modeling the Water-Quality Effects of Changes to the Klamath River Upstream of Keno Dam, Oregon Table A11. Scenario 9 dissolved oxygen supplementation annual volume average results for the Link-Keno reach of the Klamath River, Oregon.

[Abbreviations: DO, dissolved oxygen; °C, degrees Celsius; mg/L, milligram per liter; μg/L, microgram per liter]

Scenario

Annual in-reach volume average

Water 

temperature

°C

Dissolved 

oxygen

(mg/L)

pH Ammonia (mg/L) Nitrate (mg/L) Ortho- phosphorus (mg/L) Chlorophyll a (μg/L) Particulate organic carbon (mg/L) Dissolved organic carbon (mg/L) Total phosphorus (mg/L) Total nitrogen (mg/L) Sediment (1st-order) (mg/L)

2006

1a Base case 11.2 7.91 8.12 0.398 0.161 0.078 41.1 1.72 8.25 0.165 1.84 15.5

9a DO saturation, segment 7 (Railroad Bridge) 11.2 8.35 8.12 0.394 0.164 0.077 41.1 1.72 8.23 0.164 1.84 14.99b DO saturation, segment 21 (Highway 97) 11.2 8.51 8.13 0.392 0.165 0.078 40.7 1.71 8.23 0.164 1.83 14.8

9c DO saturation, segment 38 (Miller Island) 11.2 8.33 8.11 0.397 0.163 0.078 41.0 1.71 8.24 0.165 1.84 15.2

9d DO supersaturation, segment 7 (Railroad Bridge) 11.2 9.08 8.10 0.399 0.166 0.078 41.0 1.71 8.24 0.165 1.84 15.0

9e DO supersaturation, segment 21 (Highway 97) 11.2 9.21 8.10 0.399 0.166 0.078 41.0 1.71 8.24 0.165 1.84 15.0

9f DO supersaturation, segment 38 (Miller Island) 11.3 9.23 8.13 0.394 0.167 0.078 40.4 1.71 8.23 0.164 1.84 14.6

2007

1a Base case 11.8 7.60 7.97 0.531 0.204 0.076 36.5 1.84 8.22 0.163 2.03 17.0

9a DO saturation, segment 7 (Railroad Bridge) 11.8 7.74 7.95 0.532 0.205 0.075 37.1 1.85 8.24 0.162 2.03 16.8

9b DO saturation, segment 21 (Highway 97) 11.8 7.88 7.95 0.535 0.207 0.076 36.8 1.84 8.23 0.164 2.03 16.4

9c DO saturation, segment 38 (Miller Island) 11.8 7.88 7.95 0.535 0.205 0.076 36.6 1.83 8.23 0.164 2.03 16.2

9d DO supersaturation, segment 7 (Railroad Bridge) 11.8 8.65 7.94 0.536 0.210 0.077 36.6 1.83 8.23 0.164 2.04 15.8

9e DO supersaturation, segment 21 (Highway 97) 11.8 8.79 7.94 0.537 0.210 0.077 36.6 1.83 8.23 0.164 2.04 15.6

9f DO supersaturation, segment 38 (Miller Island) 11.8 8.68 7.94 0.536 0.207 0.077 36.6 1.83 8.23 0.164 2.03 15.7

2008

1a Base case 11.2 6.75 8.06 0.626 0.199 0.073 32.9 2.54 7.97 0.164 2.17 23.7

9a DO saturation, segment 7 (Railroad Bridge) 11.2 7.03 8.04 0.628 0.203 0.072 33.3 2.54 7.96 0.164 2.18 22.4

9b DO saturation, segment 21 (Highway 97) 11.2 7.21 8.03 0.631 0.204 0.073 33.0 2.52 7.96 0.164 2.18 21.6

9c DO saturation, segment 38 (Miller Island) 11.2 7.22 8.04 0.629 0.202 0.073 32.9 2.52 7.96 0.164 2.18 21.8

9d DO supersaturation, segment 7 (Railroad Bridge) 11.2 7.75 8.03 0.633 0.206 0.073 32.8 2.51 7.96 0.164 2.18 21.0

9e DO supersaturation, segment 21 (Highway 97) 11.2 7.89 8.02 0.634 0.207 0.073 32.8 2.50 7.96 0.164 2.18 20.5

9f DO supersaturation, segment 38 (Miller Island) 11.2 7.81 8.03 0.631 0.203 0.073 32.8 2.51 7.96 0.164 2.18 21.0

2009

1a Base case 11.4 6.95 8.03 0.518 0.159 0.061 22.9 2.67 7.08 0.145 1.93 23.3

9a DO saturation, segment 7 (Railroad Bridge) 11.3 7.27 8.00 0.522 0.164 0.060 23.1 2.67 7.07 0.144 1.94 21.9

9b DO saturation, segment 21 (Highway 97) 11.3 7.44 7.99 0.524 0.166 0.061 23.0 2.65 7.07 0.146 1.94 21.0

9c DO saturation, segment 38 (Miller Island) 11.4 7.45 8.00 0.522 0.163 0.061 22.9 2.65 7.07 0.145 1.93 21.0

9d DO supersaturation, segment 7 (Railroad Bridge) 11.3 7.91 7.99 0.526 0.169 0.061 22.9 2.64 7.07 0.146 1.94 20.5

9e DO supersaturation, segment 21 (Highway 97) 11.4 8.08 7.98 0.527 0.170 0.061 22.9 2.63 7.07 0.146 1.94 19.9

9f DO supersaturation, segment 38 (Miller Island) 11.4 8.03 8.03 0.524 0.164 0.061 22.9 2.64 7.07 0.145 1.93 20.3
Appendix A 57

Table A12. Scenario 9 dissolved oxygen supplementation June through October volume average results for the Link-Keno reach of the Klamath River, Oregon.[Abbreviations: DO, dissolved oxygen; °C, degrees Celsius; mg/L, milligram per liter; μg/L, microgram per liter]

Scenario

June through October in-reach volume average

Water 

temperature

(°C)

Dissolved 

oxygen

(mg/L)

pH Ammonia (mg/L) Nitrate (mg/L) Ortho- phosphorus (mg/L) Chlorophyll a (μg/L) Particulate organic carbon (mg/L) Dissolved organic carbon (mg/L) Total phosphorus (mg/L) Total nitrogen (mg/L) Sediment (1st-order) (mg/L)

2006

1a Base case 18.9 4.42 8.34 0.458 0.060 0.105 84.1 3.12 10.6 0.224 2.27 18.7

9a DO saturation, segment 7 (Railroad Bridge) 19.0 5.43 8.36 0.454 0.068 0.103 84.9 3.14 10.6 0.222 2.28 17.3

9b DO saturation, segment 21 (Highway 97) 19.0 5.84 8.38 0.449 0.070 0.104 83.8 3.11 10.6 0.223 2.27 17.2

9c DO saturation, segment 38 (Miller Island) 18.9 5.42 8.32 0.461 0.065 0.105 84.0 3.10 10.6 0.224 2.28 17.9

9d DO supersaturation, segment 7 (Railroad Bridge) 18.8 7.33 8.30 0.464 0.073 0.106 84.2 3.10 10.6 0.224 2.29 17.6

9e DO supersaturation, segment 21 (Highway 97) 18.9 7.67 8.30 0.464 0.072 0.106 84.2 3.10 10.5 0.224 2.29 17.5

9f DO supersaturation, segment 38 (Miller Island) 18.9 7.45 8.29 0.462 0.069 0.106 84.1 3.10 10.6 0.224 2.28 17.5

2007

1a Base case 18.5 4.60 8.18 0.566 0.071 0.121 85.0 3.51 11.0 0.247 2.50 24.4

9a DO saturation, segment 7 (Railroad Bridge) 18.4 4.99 8.13 0.568 0.074 0.117 85.9 3.51 11.1 0.243 2.51 23.79b DO saturation, segment 21 (Highway 97) 18.4 5.35 8.12 0.575 0.078 0.122 85.2 3.49 11.0 0.248 2.52 22.9

9c DO saturation, segment 38 (Miller Island) 18.4 5.35 8.12 0.575 0.075 0.122 84.6 3.48 11.0 0.248 2.51 22.59d DO supersaturation, segment 7 (Railroad Bridge) 18.4 7.26 8.10 0.579 0.087 0.122 84.7 3.46 11.0 0.248 2.53 21.59e DO supersaturation, segment 21 (Highway 97) 18.4 7.62 8.10 0.580 0.086 0.122 84.7 3.46 11.0 0.248 2.53 20.9

9f DO supersaturation, segment 38 (Miller Island) 18.4 7.38 8.11 0.577 0.080 0.122 84.6 3.46 11.0 0.248 2.52 21.3

2008

1a Base case 18.7 3.17 8.43 0.448 0.044 0.093 67.0 4.61 9.65 0.217 2.32 34.09a DO saturation, segment 7 (Railroad Bridge) 18.7 3.80 8.38 0.456 0.052 0.092 68.0 4.61 9.63 0.216 2.34 31.3

9b DO saturation, segment 21 (Highway 97) 18.7 4.22 8.37 0.463 0.056 0.094 67.3 4.57 9.63 0.218 2.34 29.8

9c DO saturation, segment 38 (Miller Island) 18.7 4.27 8.38 0.458 0.050 0.094 66.9 4.57 9.63 0.217 2.33 30.0

9d DO supersaturation, segment 7 (Railroad Bridge) 18.7 5.57 8.34 0.469 0.062 0.095 66.8 4.53 9.62 0.218 2.35 28.2

9e DO supersaturation, segment 21 (Highway 97) 18.7 5.93 8.33 0.472 0.062 0.095 66.8 4.52 9.62 0.218 2.35 27.1

9f DO supersaturation, segment 38 (Miller Island) 18.7 5.74 8.36 0.464 0.054 0.094 66.8 4.55 9.63 0.217 2.34 28.3

2009

1a Base case 18.4 2.85 8.18 0.463 0.067 0.081 43.3 5.08 7.95 0.194 2.20 32.6

9a DO saturation, segment 7 (Railroad Bridge) 18.4 3.59 8.11 0.474 0.079 0.079 43.8 5.07 7.93 0.192 2.22 29.7

9b DO saturation, segment 21 (Highway 97) 18.4 3.98 8.08 0.481 0.085 0.082 43.4 5.02 7.93 0.195 2.23 28.0

9c DO saturation, segment 38 (Miller Island) 18.5 4.02 8.11 0.476 0.077 0.081 43.2 5.03 7.94 0.194 2.22 28.0

9d DO supersaturation, segment 7 (Railroad Bridge) 18.4 5.15 8.06 0.485 0.094 0.082 43.2 4.99 7.93 0.194 2.24 27.0

9e DO supersaturation, segment 21 (Highway 97) 18.4 5.58 8.05 0.488 0.096 0.082 43.1 4.97 7.92 0.194 2.24 25.6

9f DO supersaturation, segment 38 (Miller Island) 18.5 5.48 8.09 0.481 0.081 0.082 43.2 5.00 7.93 0.194 2.22 26.3
58 Modeling the Water-Quality Effects of Changes to the Klamath River Upstream of Keno Dam, Oregon Table A13. Scenario 9 annual volume average results for the Link-Keno reach of the Klamath River, Oregon.

[Abbreviations: DO, dissolved oxygen; °C, degrees Celsius; m, meter; mg/L, milligram per liter; μg/L, microgram per liter]

Scenario

Annual in-reach volume average

Water 

temperature

(°C)

Dissolved 

oxygen

(mg/L)

pH Ammonia (mg/L) Nitrate (mg/L) Ortho- phosphorus (mg/L) Chlorophyll a (μg/L) Particulate organic carbon (mg/L) Dissolved organic carbon (mg/L) Total phosphorus (mg/L) Total nitrogen (mg/L) Sediment (1st-order) (mg/L)

2006

1a Base case 11.2 7.91 8.12 0.398 0.161 0.078 41.1 1.72 8.25 0.165 1.84 15.5

9g Shade, 10 m trees 11.1 7.84 8.10 0.396 0.161 0.079 40.3 1.69 8.24 0.165 1.83 15.3

9g Shade, 20 m trees 11.0 7.82 8.09 0.396 0.162 0.079 40.0 1.68 8.24 0.165 1.83 15.3

2007

1a Base case 11.8 7.60 7.97 0.531 0.204 0.076 36.5 1.84 8.22 0.163 2.03 17.0

9g Shade, 10 m trees 11.7 7.43 7.93 0.527 0.203 0.076 35.7 1.79 8.21 0.163 2.01 16.7

9g Shade, 20 m trees 11.5 7.37 7.91 0.527 0.203 0.077 35.5 1.78 8.21 0.163 2.01 16.8

2008

1a Base case 11.2 6.75 8.06 0.626 0.199 0.073 32.9 2.54 7.97 0.164 2.17 23.7

9g Shade, 10 m trees 11.1 6.67 7.97 0.622 0.199 0.073 32.3 2.51 7.96 0.164 2.16 23.4

9g Shade, 20 m trees 10.9 6.64 8.03 0.622 0.199 0.073 32.1 2.50 7.96 0.164 2.16 23.3

2009

1a Base case 11.4 6.95 8.03 0.518 0.159 0.061 22.9 2.67 7.08 0.145 1.93 23.3

9g Shade, 10 m trees 11.2 6.90 8.01 0.516 0.159 0.061 22.5 2.65 7.07 0.145 1.92 23.2

9g Shade, 20 m trees 11.1 6.88 8.00 0.516 0.159 0.061 22.3 2.64 7.07 0.145 1.92 23.0
Appendix A 59

Table A14. Scenario 9 June through October volume average results for the Link-Keno reach of the Klamath River, Oregon.[Abbreviations: DO, dissolved oxygen; °C, degrees Celsius; m, meter; mg/L, milligram per liter; μg/L, microgram per liter]

Scenario

June through October in-reach volume average

Water 

temperature

(°C)

Dissolved 

oxygen

(mg/L)

pH Ammonia (mg/L) Nitrate (mg/L) Ortho- phosphorus (mg/L) Chlorophyll a (μg/L) Particulate organic carbon (mg/L) Dissolved organic carbon (mg/L) Total phosphorus (mg/L) Total nitrogen (mg/L) Sediment (1st-order) (mg/L)

2006

1a Base case 18.9 4.42 8.34 0.458 0.060 0.105 84.1 3.12 10.6 0.224 2.27 18.7

9g Shade, 10 m trees 18.7 4.30 8.30 0.453 0.060 0.106 82.0 3.04 10.5 0.224 2.26 18.1

9g Shade, 20 m trees 18.5 4.27 8.29 0.452 0.061 0.106 81.3 3.02 10.5 0.224 2.25 17.9

2007

1a Base case 18.5 4.60 8.18 0.566 0.071 0.121 85.0 3.51 11.0 0.247 2.50 24.4

9g Shade, 10 m trees 18.2 4.30 8.11 0.555 0.069 0.121 82.8 3.39 11.0 0.247 2.47 23.6

9g Shade, 20 m trees 18.0 4.16 8.09 0.555 0.067 0.122 82.0 3.35 11.0 0.247 2.46 23.6

2008

1a Base case 18.7 3.17 8.43 0.448 0.044 0.093 67.0 4.61 9.65 0.217 2.32 34.0

9g Shade, 10 m trees 18.5 3.06 8.36 0.443 0.044 0.094 65.6 4.55 9.63 0.217 2.31 33.5

9g Shade, 20 m trees 18.3 3.03 8.39 0.442 0.044 0.094 65.1 4.52 9.62 0.217 2.30 33.1

2009

1a Base case 18.4 2.85 8.18 0.463 0.067 0.081 43.3 5.08 7.95 0.194 2.20 32.6

9g Shade, 10 m trees 18.3 2.75 8.15 0.459 0.067 0.081 42.4 5.02 7.93 0.193 2.19 32.1

9g Shade, 20 m trees 18.1 2.72 8.14 0.459 0.067 0.081 42.0 5.00 7.92 0.193 2.18 31.7
60 Modeling the Water-Quality Effects of Changes to the Klamath River Upstream of Keno Dam, Oregon Table A15. Scenario 10 annual volume-average results for the Link-Keno reach of the Klamath River, Oregon.

[Abbreviations: °C, degrees Celsius; mg/L, milligram per liter; μg/L, microgram per liter]

Scenario

Annual in-reach volume average

Water 

temperature

(°C)

Dissolved 

oxygen

(mg/L)

pH Ammonia (mg/L) Nitrate (mg/L) Ortho- phosphorus (mg/L) Chlorophyll a (μg/L) Particulate organic carbon (mg/L) Dissolved organic carbon (mg/L) Total phosphorus (mg/L) Total nitrogen (mg/L) Sediment (1st-order) (mg/L)

2007

1a Base case 11.8 7.60 7.97 0.531 0.204 0.076 36.5 1.84 8.22 0.163 2.03 17.0

10a Minimum future temperature increase 12.4 7.54 7.96 0.531 0.204 0.076 36.4 1.83 8.21 0.163 2.02 16.6

10b Median future temperature increase 13.2 7.45 7.96 0.531 0.203 0.075 36.2 1.83 8.19 0.163 2.02 16.0

10c Maximum future temperature increase 14.2 7.35 7.95 0.531 0.202 0.075 36.1 1.82 8.18 0.162 2.02 15.6

Table A16. Scenario 10 June through October volume average concentrations for the Link-Keno reach of the Klamath River, Oregon.[Abbreviations: °C, degrees Celsius; mg/L, milligram per liter; μg/L, microgram per liter]

Scenario

June through October in-reach volume average

Water 

temperature

(°C)

Dissolved 

oxygen

(mg/L)

pH Ammonia (mg/L) Nitrate (mg/L) Ortho- phosphorus (mg/L) Chlorophyll a (μg/L) Particulate organic carbon (mg/L) Dissolved organic carbon (mg/L) Total phosphorus (mg/L) Total nitrogen (mg/L) Sediment (1st-order) (mg/L)

2007

1a Base case 18.5 4.60 8.18 0.566 0.071 0.121 85.0 3.51 11.0 0.247 2.50 24.4

10a Minimum future temperature increase 19.1 4.49 8.16 0.567 0.070 0.120 85.0 3.50 11.0 0.247 2.50 24.1

10b Median future temperature increase 19.9 4.35 8.14 0.570 0.069 0.120 85.0 3.49 11.0 0.246 2.50 23.8

10c Maximum future temperature increase 20.7 4.26 8.14 0.571 0.068 0.120 85.2 3.50 11.0 0.246 2.50 23.8