Columbia River
| * |
Project spilling more than max FOP level ≥ 6 hours |
|
Project operating at minimum generation ≥ 6 hours |
|
|
TDG exceeded 125% |
|
|
value |
1/3 or more data missing for value calculation |
|
↓ | ↑ |
Spill cap decreased | increased |
| Date | McNary | John Day | The Dalles | Bonneville | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Spill Cap | Daily Avg. Spill | PS Spill | TW TDG | Spill Cap | Daily Avg. Spill | PS pill | TW TDG | Spill Cap | Daily Avg. Spill | PS Spill | TW TDG | Spill Cap | Daily Avg. Spill | PS Spill | TW TDG | |||
| kcfs | kcfs | Hours | % | kcfs | kcfs | Hours | % | kcfs | % | kcfs | Hours | % | kcfs | kcfs | Hours | % | ||
| 2026-04-03 | 220 | 15 | 110 | 230 | 10 | 112 | 40 | 27 | 110 | 150 | 2 | 109 | ||||||
| 2026-04-04 | 220 | 10 | 110 | 230 | 10 | 112 | 40 | 28 | 111 | 150 | 2 | 109 | ||||||
| 2026-04-05 | 220 | 10 | 112 | 230 | 10 | 113 | 40 | 33 | 111 | 150 | 1 | 110 | ||||||
| 2026-04-06 | 220 | 9 | 114 | 230 | 10 | 113 | 40 | 29 | 112 | 150 | 2 | 111 | ||||||
| 2026-04-07 | 220 | 9 | 113 | 230 | 10 | 111 | 40 | 17 | 110 | 150 | 2 | 110 | ||||||
| 2026-04-08 | 220 | 9 | 112 | 230 | 10 | 111 | 40 | 6 | 109 | 150 | 1 | 109 | ||||||
| 2026-04-09 | 220 | 8 | 112 | 230 | 10 | 112 | 40 | 0 | 109 | 150 | 1 | 108 | ||||||
| 2026-04-10 | 220 | 116 | 126 | 230 | 114 | 118 | 40 | 65 | 115 | 150 | 138 | 121 | ||||||
| 2026-04-11 | 220 | 140 | 122 | 230 | 137 | 119 | 40 | 72 | 119 | 150 | 145 | 121 | ||||||
| 2026-04-12 | 220 | 149 | 122 | 230 | 154 | 119 | 40 | 74 | 120 | 150 | 150 | 121 | ||||||
| 2026-04-13 | 220 | 152 | 122 | 230 | 150 | 118 | 40 | 83 | 118 | 150 | 150 | 121 | ||||||
| 2026-04-14 | 220 | 151 | 122 | 230 | 150 | 118 | 40 | 79 | 119 | 150 | 149 | 121 | ||||||
| 2026-04-15 | 220 | 152 | 122 | 230 | 150 | 118 | 40 | 81 | 120 | 150 | 149 | 120 | ||||||
| 2026-04-16 | 220 | 152 | 122 | 230 | 150 | 118 | 40 | 81 | 118 | 150 | 149 | 120 | ||||||
| 2026-04-17 | 220 | 165 | 122 | 230 | 172 | 120 | 40 | 80 | 120 | 150 | 150 | 121 | ||||||
| 2026-04-18 | 220 | 170 | 122 | 230 | 180 | 120 | 40 | 88 | 123 | 150 | 150 | 121 | ||||||
| 2026-04-19 | 220 | 146 | 121 | 230 | 154 | 119 | 40 | 94 | 124 | 150 | 149 | 121 | ||||||
| 2026-04-20 | 220 | 156 | 122 | 230 | 152 | 119 | 40 | 83 | 122 | 150 | 150 | 121 | ||||||
| 2026-04-21 | 220 | 161 | 122 | 230 | 159 | 119 | 40 | 81 | 121 | 150 | 151 | 121 | ||||||
| 2026-04-22 | 220 | 155 | 121 | 230 | 155 | 119 | 40 | 84 | 119 | 150 | 150 | 120 | ||||||
| 2026-04-23 | 220 | 172 | 123 | 230 | 178 | 121 | 40 | 82 | 118 | 150 | 150 | 121 | ||||||
| 2026-04-24 | 220 | 167 | 122 | 230 | 196 | 122 | 40 | 92 | 123 | 150 | 150 | 121 | ||||||
| 2026-04-25 | 220 | 185 | 123 | 230 | 186 | 121 | 40 | 98 | 124 | 150 | 150 | 122 | ||||||
| 2026-04-26 | 220 | 180 | 123 | 230 | 179 | 120 | 40 | 94 | 123 | 150 | 152 | 122 | ||||||
| 2026-04-27 | 220 | 170 | 123 | 230 | 176 | 120 | 40 | 90 | 121 | 150 | 151 | 121 | ||||||
| 2026-04-28 | 220 | 162 | 122 | 230 | 165 | 119 | 40 | 90 | 120 | 150 | 150 | 121 | ||||||
| 2026-04-29 | 220 | 156 | 121 | 230 | 168 | 120 | 40 | 86 | 121 | 150 | 150 | 121 | ||||||
| 2026-04-30 | 220 | 165 | 122 | 230 | 174 | 120 | 40 | 87 | 122 | 150 | 150 | 121 | ||||||
| Date | Spill Cap | Daily Avg. Spill | PS Spill | TW TDG | Spill Cap | Daily Avg. Spill | PS Spill | TW TDG | Spill Cap | Daily Avg. Spill | PS Spill | TW TDG | Spill Cap | Daily Avg. Spill | PS Spill | TW TDG | ||
| McNary | John Day | The Dalles | Bonneville | |||||||||||||||
Snake River
| * |
Project spilling more than max FOP level ≥ 6 hours |
|
Project operating at minimum generation ≥ 6 hours |
|
|
TDG exceeded 125% |
|
|
value |
1/3 or more data missing for value calculation |
|
↓ | ↑ |
Spill cap decreased | increased |
| Date | Lower Granite | Little Goose | Lower Monumental | Ice Harbor | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Spill Cap | Daily Avg. Spill | PS Spill | TW TDG | Spill Cap | Daily Avg. Spill | PS Spill | TW TDG | Spill Cap | Daily Avg. Spill | PS Spill | TW TDG | Spill Cap | Daily Avg. Spill | PS Spill | TW TDG | ||
| kcfs | kcfs | Count | % | kcfs | kcfs | Count | % | kcfs | kcfs | Count | % | kcfs | kcfs | Count | % | ||
| 2026-04-03 | 80 | 59 | 121 | 90 | 56 | 0 | 121 | 105 | 54 | 119 | 110 | 58 | 116 | ||||
| 2026-04-04 | 80 | 59 | 120 | 90 | 56 | 0 | 121 | 105 | 55 | 118 | 110 | 58 | 116 | ||||
| 2026-04-05 | 80 | 56 | 120 | 90 | 52 | 0 | 120 | 105 | 51 | 118 | 110 | 56 | 116 | ||||
| 2026-04-06 | 80 | 54 | 119 | 90 | 52 | 0 | 121 | 105 | 51 | 118 | 110 | 54 | 117 | ||||
| 2026-04-07 | 80 | 53 | 120 | 90 | 49 | 0 | 121 | 105 | 47 | 117 | 110 | 52 | 116 | ||||
| 2026-04-08 | 80 | 51 | 119 | 90 | 46 | 0 | 120 | 105 | 45 | 117 | 110 | 49 | 116 | ||||
| 2026-04-09 | 80 | 53 | 119 | 90 | 48 | 0 | 120 | 105 | 47 | 117 | 110 | 49 | 116 | ||||
| 2026-04-10 | 80 | 54 | 119 | 90 | 50 | 0 | 120 | 105 | 48 | 118 | 110 | 53 | 117 | ||||
| 2026-04-11 | 80 | 51 | 119 | 90 | 48 | 0 | 120 | 105 | 47 | 117 | 110 | 51 | 117 | ||||
| 2026-04-12 | 80 | 58 | 121 | 90 | 55 | 0 | 121 | 105 | 54 | 118 | 110 | 57 | 116 | ||||
| 2026-04-13 | 80 | 63 | 121 | 90 | 61 | 0 | 122 | 105 | 59 | 118 | 110 | 63 | 116 | ||||
| 2026-04-14 | 80 | 66 | 122 | 90 | 62 | 0 | 122 | 105 | 60 | 118 | 110 | 64 | 116 | ||||
| 2026-04-15 | 80 | 63 | 121 | 90 | 60 | 0 | 122 | 105 | 60 | 118 | 110 | 64 | 116 | ||||
| 2026-04-16 | 80 | 68 | 122 | 90 | 66 | 0 | 122 | 105 | 65 | 121 | 110 | 69 | 116 | ||||
| 2026-04-17 | 80 | 65 | 121 | 90 | 63 | 0 | 122 | 105 | 62 | 119 | 110 | 68 | 116 | ||||
| 2026-04-18 | 80 | 61 | 121 | 90 | 58 | 0 | 122 | 105 | 57 | 118 | 110 | 61 | 116 | ||||
| 2026-04-19 | 80 | 57 | 120 | 90 | 53 | 0 | 121 | 105 | 52 | 118 | 110 | 57 | 116 | ||||
| 2026-04-20 | 80 | 56 | 120 | 90 | 52 | 0 | 120 | 105 | 51 | 118 | 110 | 56 | 116 | ||||
| 2026-04-21 | 80 | 58 | 121 | 90 | 54 | 0 | 121 | 105 | 53 | 119 | 110 | 56 | 116 | ||||
| 2026-04-22 | 80 | 61 | 121 | 90 | 60 | 1 | 122 | 105 | 59 | 118 | 110 | 64 | 116 | ||||
| 2026-04-23 | 80 | 78 | 124 | 90 | 76 | 8 | 124 | 105 | 74 | 122 | 110 | 78 | 118 | ||||
| 2026-04-24 | 80 | 80 | 124 | 90 | 62 | 8 | 124 | 105 | 76 | 122 | 110 | 79 | 118 | ||||
| 2026-04-25 | 82 ↑ | 73 | 124 | 90 | 59 | 8 | 124 | 105 | 72 | 122 | 110 | 76 | 117 | ||||
| 2026-04-26 | 82 | 69 | 123 | 90 | 54 | 8 | 123 | 105 | 62 | 121 | 110 | 68 | 117 | ||||
| 2026-04-27 | 82 | 69 | 122 | 90 | 51 | 8 | 122 | 105 | 63 | 120 | 110 | 68 | 117 | ||||
| 2026-04-28 | 82 | 63 | 121 | 90 | 47 | 8 | 122 | 105 | 58 | 118 | 110 | 63 | 116 | ||||
| 2026-04-29 | 82 | 62 | 121 | 90 | 47 | 8 | 122 | 105 | 57 | 118 | 110 | 62 | 113 | ||||
| 2026-04-30 | 82 | 60 | 120 | 90 | 45 | 8 | 121 | 105 | 56 | 117 | 110 | 60 | 116 | ||||
| 2026-04-02 | 0 | ||||||||||||||||
| Date | Spill Cap | Daily Avg. Spill | PS Spill | TW TDG | Spill Cap | Daily Avg. Spill | PS Spill | TW TDG | Spill Cap | Daily Avg. Spill | PS Spill | TW TDG | Spill Cap | Daily Avg. Spill | PS Spill | TW TDG | |
| Lower Granite | Little Goose | Lower Monumental | Ice Harbor | ||||||||||||||