| McNary Dam forebay on Columbia R. (MCNA) | McNary Dam tailwater on Columbia R. (MCPW) | John Day Dam forebay (JDY) | John Day Dam tailwater (JHAW) | The Dalles Dam forebay on Columbia R. (TDA) | The Dalles tailwater Downstream (TDDO) | Bonneville Dam forebay (BON) | Cascade Island (CCIW) | Warrendale (WRNO) | Camas / Washougal (CWMW) | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Date | Min | Avg | Max | >68 | Min | Avg | Max | >68 | Min | Avg | Max | >68 | Min | Avg | Max | >68 | Min | Avg | Max | >68 | Min | Avg | Max | >68 | Min | Avg | Max | >68 | Min | Avg | Max | >68 | Min | Avg | Max | >68 | Min | Avg | Max | >68 |
| May 1 | --- | --- | --- | 0/0 | 52.5 | 53.1 | 53.7 | 0/24 | 53.3 | 53.9 | 54.8 | 0/24 | 53.2 | 53.6 | 54.0 | 0/24 | 53.7 | 53.9 | 54.1 | 0/24 | 128.6 | 129.3 | 130.1 | 24/24 | --- | --- | --- | 0/0 | 54.0 | 54.3 | 54.7 | 0/24 | --- | --- | --- | 0/0 | 54.1 | 55.2 | 56.3 | 0/24 |
| May 2 | --- | --- | --- | 0/0 | 53.4 | 53.6 | 53.9 | 0/24 | 53.2 | 53.6 | 54.1 | 0/24 | 53.3 | 53.6 | 54.0 | 0/24 | 54.1 | 54.5 | 54.9 | 0/24 | 129.4 | 130.1 | 131.0 | 24/24 | --- | --- | --- | 0/0 | 54.5 | 54.8 | 55.3 | 0/24 | --- | --- | --- | 0/0 | 54.8 | 55.8 | 57.3 | 0/24 |
| May 3 | --- | --- | --- | 0/0 | 53.6 | 54.2 | 54.5 | 0/24 | 53.6 | 54.1 | 54.5 | 0/24 | 53.7 | 54.0 | 54.3 | 0/24 | 54.5 | 54.8 | 55.1 | 0/24 | 130.1 | 130.8 | 131.5 | 24/24 | --- | --- | --- | 0/0 | 54.9 | 55.3 | 55.8 | 0/24 | --- | --- | --- | 0/0 | 55.4 | 56.4 | 57.7 | 0/24 |
| May 4 | --- | --- | --- | 0/0 | 54.4 | 54.7 | 55.1 | 0/24 | 54.0 | 54.5 | 54.8 | 0/24 | 54.0 | 54.4 | 54.7 | 0/24 | 54.7 | 55.0 | 55.2 | 0/24 | 130.5 | 131.0 | 131.7 | 24/24 | --- | --- | --- | 0/0 | 55.4 | 55.6 | 55.7 | 0/24 | --- | --- | --- | 0/0 | 55.8 | 56.2 | 56.8 | 0/24 |
| May 5 | --- | --- | --- | 0/0 | 54.9 | 55.1 | 55.3 | 0/24 | 54.4 | 55.0 | 55.3 | 0/24 | 54.6 | 55.2 | 55.6 | 0/24 | 55.0 | 55.1 | 55.3 | 0/24 | 130.8 | 131.2 | 131.4 | 24/24 | --- | --- | --- | 0/0 | 55.4 | 55.5 | 55.6 | 0/24 | --- | --- | --- | 0/0 | 55.4 | 56.0 | 56.8 | 0/24 |
| May 6 | --- | --- | --- | 0/0 | 55.0 | 55.2 | 55.5 | 0/24 | 55.4 | 55.7 | 56.5 | 0/24 | 55.6 | 55.9 | 56.3 | 0/24 | 55.3 | 55.6 | 55.8 | 0/24 | 131.4 | 132.1 | 132.5 | 24/24 | --- | --- | --- | 0/0 | 55.2 | 55.5 | 55.7 | 0/24 | --- | --- | --- | 0/0 | 55.2 | 56.0 | 56.8 | 0/24 |
| May 7 | --- | --- | --- | 0/0 | 54.8 | 55.2 | 55.4 | 0/24 | 55.7 | 55.9 | 56.0 | 0/24 | 55.7 | 56.0 | 56.1 | 0/24 | 55.8 | 56.0 | 56.4 | 0/24 | 132.5 | 132.9 | 133.4 | 24/24 | --- | --- | --- | 0/0 | 55.3 | 55.6 | 56.2 | 0/24 | --- | --- | --- | 0/0 | 55.5 | 56.0 | 56.5 | 0/24 |
| May 8 | --- | --- | --- | 0/0 | 54.9 | 55.1 | 55.3 | 0/24 | 55.8 | 55.9 | 56.1 | 0/24 | 55.9 | 56.1 | 56.2 | 0/24 | 56.2 | 56.4 | 56.6 | 0/24 | 133.1 | 133.6 | 134.0 | 24/24 | --- | --- | --- | 0/0 | 56.0 | 56.2 | 56.7 | 0/24 | --- | --- | --- | 0/0 | 55.6 | 56.3 | 57.3 | 0/24 |
| May 9 | --- | --- | --- | 0/0 | 54.8 | 55.0 | 55.3 | 0/24 | 56.0 | 56.1 | 56.3 | 0/24 | 56.1 | 56.3 | 56.5 | 0/24 | 56.3 | 56.6 | 56.8 | 0/24 | 133.6 | 133.9 | 134.3 | 24/24 | --- | --- | --- | 0/0 | 56.4 | 56.7 | 57.2 | 0/24 | --- | --- | --- | 0/0 | 56.2 | 57.2 | 58.6 | 0/24 |
| May 10 | --- | --- | --- | 0/0 | 55.1 | 55.5 | 55.7 | 0/24 | 56.2 | 56.4 | 56.5 | 0/24 | 56.4 | 56.5 | 56.6 | 0/24 | 56.4 | 56.6 | 56.7 | 0/24 | 133.7 | 134.1 | 134.4 | 24/24 | --- | --- | --- | 0/0 | 56.7 | 56.8 | 57.2 | 0/24 | --- | --- | --- | 0/0 | 56.7 | 57.0 | 57.5 | 0/24 |
| May 11 | --- | --- | --- | 0/0 | 55.1 | 55.3 | 55.6 | 0/24 | 56.3 | 56.3 | 56.5 | 0/19 | 56.3 | 56.4 | 56.6 | 0/24 | 56.3 | 56.5 | 56.6 | 0/24 | 133.6 | 133.8 | 134.0 | 24/24 | --- | --- | --- | 0/0 | 56.4 | 56.5 | 56.7 | 0/24 | --- | --- | --- | 0/0 | 56.3 | 56.7 | 57.3 | 0/24 |
| May 12 | --- | --- | --- | 0/0 | 54.2 | 54.9 | 55.3 | 0/24 | 56.2 | 56.3 | 56.4 | 0/24 | 56.2 | 56.4 | 56.6 | 0/24 | 56.4 | 56.6 | 56.9 | 0/24 | 133.7 | 133.9 | 134.3 | 24/24 | --- | --- | --- | 0/0 | 56.3 | 56.6 | 57.0 | 0/24 | --- | --- | --- | 0/0 | 56.2 | 56.7 | 57.2 | 0/24 |
| May 13 | --- | --- | --- | 0/0 | 53.7 | 54.1 | 54.4 | 0/24 | 56.3 | 56.6 | 57.3 | 0/24 | 56.3 | 56.6 | 56.9 | 0/24 | 56.4 | 56.7 | 56.9 | 0/24 | 133.8 | 134.1 | 134.6 | 24/24 | --- | --- | --- | 0/0 | 56.7 | 57.0 | 57.4 | 0/24 | --- | --- | --- | 0/0 | 56.4 | 57.3 | 58.4 | 0/24 |
| May 14 | --- | --- | --- | 0/0 | 54.2 | 54.8 | 55.6 | 0/24 | 56.3 | 56.6 | 57.0 | 0/24 | 56.4 | 56.6 | 56.7 | 0/24 | 56.9 | 57.0 | 57.2 | 0/24 | 134.3 | 134.9 | 135.5 | 24/24 | --- | --- | --- | 0/0 | 57.1 | 57.3 | 57.7 | 0/24 | --- | --- | --- | 0/0 | 57.1 | 57.8 | 59.0 | 0/24 |
| May 15 | --- | --- | --- | 0/0 | 54.8 | 55.2 | 55.6 | 0/24 | 56.0 | 56.2 | 56.6 | 0/24 | 56.0 | 56.2 | 56.5 | 0/24 | 56.7 | 57.0 | 57.1 | 0/24 | 134.2 | 134.8 | 135.1 | 24/24 | --- | --- | --- | 0/0 | 57.2 | 57.3 | 57.6 | 0/24 | --- | --- | --- | 0/0 | 57.3 | 57.5 | 57.9 | 0/24 |
| May 16 | --- | --- | --- | 0/0 | 55.0 | 55.3 | 55.5 | 0/24 | 56.0 | 56.2 | 56.4 | 0/24 | 56.2 | 56.3 | 56.6 | 0/24 | 56.5 | 56.6 | 56.7 | 0/24 | 133.8 | 134.0 | 134.3 | 24/24 | --- | --- | --- | 0/0 | 57.2 | 57.3 | 57.5 | 0/24 | --- | --- | --- | 0/0 | 57.0 | 57.6 | 58.5 | 0/24 |
| May 17 | --- | --- | --- | 0/0 | 55.1 | 55.5 | 55.9 | 0/24 | 56.5 | 56.8 | 57.3 | 0/24 | 56.6 | 56.9 | 57.3 | 0/24 | 56.7 | 56.9 | 57.2 | 0/24 | 133.8 | 134.3 | 134.7 | 24/24 | --- | --- | --- | 0/0 | 57.2 | 57.4 | 57.7 | 0/24 | --- | --- | --- | 0/0 | 57.1 | 57.9 | 59.3 | 0/24 |
| May 18 | --- | --- | --- | 0/0 | 54.8 | 55.1 | 55.3 | 0/24 | 56.2 | 56.6 | 57.2 | 0/24 | 56.4 | 56.6 | 57.1 | 0/24 | 57.1 | 57.3 | 57.6 | 0/24 | 134.7 | 135.3 | 135.8 | 24/24 | --- | --- | --- | 0/0 | 57.2 | 57.4 | 57.6 | 0/24 | --- | --- | --- | 0/0 | 57.4 | 57.7 | 57.9 | 0/24 |
| May 19 | --- | --- | --- | 0/0 | 55.0 | 55.4 | 56.1 | 0/24 | 56.1 | 56.2 | 56.3 | 0/24 | 56.2 | 56.3 | 56.4 | 0/24 | 56.8 | 56.9 | 57.1 | 0/24 | 134.2 | 134.5 | 135.0 | 24/24 | --- | --- | --- | 0/0 | 57.1 | 57.3 | 57.6 | 0/24 | --- | --- | --- | 0/0 | 57.1 | 57.5 | 58.1 | 0/24 |
| May 20 | --- | --- | --- | 0/0 | 55.4 | 55.8 | 56.2 | 0/24 | 56.2 | 56.4 | 56.6 | 0/24 | 56.2 | 56.5 | 56.7 | 0/24 | 56.6 | 56.8 | 57.1 | 0/24 | 134.2 | 134.4 | 134.6 | 24/24 | --- | --- | --- | 0/0 | 57.6 | 57.7 | 58.0 | 0/24 | --- | --- | --- | 0/0 | 57.1 | 58.1 | 59.7 | 0/24 |
| May 21 | --- | --- | --- | 0/0 | 55.6 | 55.9 | 56.2 | 0/24 | 56.6 | 56.9 | 57.2 | 0/24 | 56.7 | 57.0 | 57.3 | 0/24 | 57.0 | 57.2 | 57.4 | 0/24 | 134.5 | 134.9 | 135.3 | 24/24 | --- | --- | --- | 0/0 | 57.4 | 57.5 | 57.7 | 0/24 | --- | --- | --- | 0/0 | 57.6 | 58.0 | 58.5 | 0/24 |
| May 22 | --- | --- | --- | 0/0 | 56.0 | 56.3 | 56.6 | 0/24 | 57.1 | 57.2 | 57.3 | 0/24 | 57.2 | 57.3 | 57.4 | 0/24 | 57.4 | 57.6 | 57.7 | 0/24 | 135.2 | 135.5 | 135.9 | 24/24 | --- | --- | --- | 0/0 | 57.1 | 57.2 | 57.4 | 0/24 | --- | --- | --- | 0/0 | 57.1 | 57.4 | 57.6 | 0/24 |
| May 23 | --- | --- | --- | 0/0 | 56.2 | 56.3 | 56.5 | 0/24 | 57.1 | 57.2 | 57.3 | 0/24 | 57.1 | 57.2 | 57.3 | 0/24 | 57.3 | 57.6 | 57.8 | 0/24 | 135.4 | 135.8 | 136.0 | 24/24 | --- | --- | --- | 0/0 | 57.1 | 57.3 | 57.9 | 0/24 | --- | --- | --- | 0/0 | 56.9 | 57.4 | 58.4 | 0/24 |
| May 24 | --- | --- | --- | 0/0 | 56.2 | 56.6 | 57.2 | 0/24 | 57.3 | 57.5 | 57.7 | 0/24 | 57.3 | 57.5 | 57.8 | 0/24 | 57.4 | 57.6 | 58.0 | 0/24 | 135.4 | 135.9 | 136.5 | 24/24 | --- | --- | --- | 0/0 | 57.7 | 58.1 | 58.6 | 0/24 | --- | --- | --- | 0/0 | 57.2 | 58.3 | 59.7 | 0/24 |
| May 25 | --- | --- | --- | 0/0 | 56.2 | 56.5 | 57.1 | 0/24 | 57.4 | 57.6 | 57.9 | 0/24 | 57.5 | 57.7 | 58.0 | 0/24 | 58.0 | 58.2 | 58.3 | 0/24 | 136.3 | 136.8 | 137.4 | 24/24 | --- | --- | --- | 0/0 | 58.1 | 58.4 | 58.7 | 0/24 | --- | --- | --- | 0/0 | 58.3 | 59.1 | 60.3 | 0/24 |
| May 26 | --- | --- | --- | 0/0 | 56.2 | 56.6 | 56.9 | 0/24 | 57.4 | 57.6 | 57.8 | 0/24 | 57.5 | 57.6 | 57.8 | 0/24 | 58.2 | 58.3 | 58.4 | 0/24 | 136.8 | 137.0 | 137.1 | 24/24 | --- | --- | --- | 0/0 | 58.3 | 58.5 | 58.9 | 0/24 | --- | --- | --- | 0/0 | 58.6 | 58.7 | 59.2 | 0/24 |
| May 27 | --- | --- | --- | 0/0 | 56.9 | 57.0 | 57.4 | 0/24 | 57.7 | 57.8 | 58.2 | 0/24 | 57.7 | 57.9 | 58.1 | 0/24 | 58.0 | 58.2 | 58.4 | 0/24 | 136.6 | 136.8 | 137.0 | 24/24 | --- | --- | --- | 0/0 | 58.4 | 58.7 | 58.9 | 0/24 | --- | --- | --- | 0/0 | 58.5 | 58.7 | 58.9 | 0/24 |
| May 28 | --- | --- | --- | 0/0 | 56.9 | 57.1 | 57.4 | 0/24 | 58.0 | 58.1 | 58.2 | 0/24 | 32.0 | 57.0 | 58.2 | 0/24 | 57.9 | 58.1 | 58.4 | 0/24 | 136.4 | 136.7 | 137.0 | 24/24 | --- | --- | --- | 0/0 | 58.0 | 58.1 | 58.4 | 0/24 | --- | --- | --- | 0/0 | 58.2 | 58.4 | 58.5 | 0/24 |
| May 29 | --- | --- | --- | 0/0 | 56.5 | 56.6 | 56.8 | 0/24 | 57.7 | 58.0 | 58.2 | 0/24 | 57.7 | 57.9 | 58.2 | 0/24 | 57.8 | 58.1 | 58.2 | 0/24 | 136.5 | 136.7 | 136.9 | 24/24 | --- | --- | --- | 0/0 | 57.8 | 57.9 | 58.0 | 0/24 | --- | --- | --- | 0/0 | 57.8 | 57.9 | 58.1 | 0/24 |
| May 30 | --- | --- | --- | 0/0 | 56.2 | 56.4 | 56.6 | 0/24 | 57.6 | 57.7 | 57.9 | 0/24 | 57.6 | 57.7 | 57.8 | 0/24 | 57.8 | 58.1 | 58.2 | 0/24 | 136.4 | 136.7 | 136.8 | 24/24 | --- | --- | --- | 0/0 | 57.9 | 58.1 | 58.2 | 0/24 | --- | --- | --- | 0/0 | 57.7 | 58.1 | 58.6 | 0/24 |
| May 31 | --- | --- | --- | 0/0 | 56.4 | 56.5 | 56.6 | 0/24 | 57.6 | 57.7 | 57.9 | 0/24 | 57.6 | 57.8 | 57.9 | 0/24 | 57.9 | 58.1 | 58.2 | 0/24 | 136.5 | 136.7 | 136.8 | 24/24 | --- | --- | --- | 0/0 | 58.0 | 58.2 | 58.4 | 0/24 | --- | --- | --- | 0/0 | 58.0 | 58.4 | 58.8 | 0/24 |
| >68 | 0 | 0 | 0 | 0/ 0 |
0 | 0 | 0 | 0/ 744 |
0 | 0 | 0 | 0/ 739 |
0 | 0 | 0 | 0/ 744 |
0 | 0 | 0 | 0/ 744 |
31 | 31 | 31 | 744/ 744 |
0 | 0 | 0 | 0/ 0 |
0 | 0 | 0 | 0/ 744 |
0 | 0 | 0 | 0/ 0 |
0 | 0 | 0 | 0/ 744 |
Temperature in Degrees Fahrenheit
| <32 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 | 64 | 66 | 68 | 70 | 72 | 74 | 76 | 78 | 80 | 82 | 84 | 86 | >86 |