| 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 |
| Apr 1 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 47.3 | 47.3 | 47.4 | 0/20 | 47.3 | 47.4 | 47.6 | 0/20 | 47.5 | 47.6 | 47.9 | 0/16 | 116.9 | 117.5 | 118.4 | 16/16 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 47.3 | 47.9 | 49.2 | 0/16 |
| Apr 2 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 47.4 | 48.0 | 49.1 | 0/24 | 47.4 | 47.9 | 48.7 | 0/24 | 47.6 | 47.9 | 48.2 | 0/24 | 117.2 | 118.2 | 119.1 | 24/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 47.6 | 48.7 | 50.3 | 0/24 |
| Apr 3 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 48.2 | 48.5 | 48.9 | 0/24 | 48.0 | 48.4 | 48.6 | 0/24 | 48.0 | 48.3 | 48.6 | 0/24 | 118.2 | 119.0 | 119.9 | 24/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 48.3 | 49.3 | 50.7 | 0/24 |
| Apr 4 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 48.3 | 48.5 | 49.0 | 0/23 | 48.3 | 48.4 | 48.6 | 0/23 | 48.5 | 48.9 | 49.2 | 0/23 | 119.3 | 120.0 | 120.9 | 23/23 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 48.5 | 49.6 | 50.8 | 0/23 |
| Apr 5 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 48.3 | 48.4 | 48.4 | 0/24 | 48.3 | 48.4 | 48.5 | 0/24 | 48.8 | 49.1 | 49.4 | 0/24 | 119.8 | 120.4 | 121.0 | 24/24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 48.8 | 49.7 | 50.5 | 0/24 |
| Apr 6 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 48.4 | 48.5 | 48.6 | 0/24 | 48.4 | 48.6 | 48.8 | 0/24 | 48.8 | 49.1 | 49.4 | 0/24 | 120.0 | 120.5 | 121.0 | 24/24 | --- | --- | --- | 0/0 | 49.7 | 49.8 | 49.8 | 0/14 | --- | --- | --- | 0/0 | 49.1 | 50.0 | 51.0 | 0/24 |
| Apr 7 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 48.4 | 48.5 | 48.7 | 0/24 | 48.5 | 48.6 | 48.8 | 0/24 | 49.2 | 49.5 | 49.8 | 0/24 | 120.5 | 121.1 | 121.8 | 24/24 | --- | --- | --- | 0/0 | 49.7 | 49.9 | 50.0 | 0/24 | --- | --- | --- | 0/0 | 49.6 | 50.3 | 51.1 | 0/24 |
| Apr 8 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 48.6 | 48.8 | 49.6 | 0/24 | 48.7 | 48.9 | 49.2 | 0/24 | 49.4 | 49.5 | 49.8 | 0/24 | 120.7 | 121.4 | 122.1 | 24/24 | --- | --- | --- | 0/0 | 49.9 | 50.2 | 50.4 | 0/24 | --- | --- | --- | 0/0 | 49.7 | 50.6 | 52.1 | 0/24 |
| Apr 9 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 49.3 | 49.9 | 51.3 | 0/24 | 49.1 | 49.5 | 49.9 | 0/24 | 49.4 | 49.8 | 50.1 | 0/24 | 120.8 | 121.6 | 122.6 | 24/24 | --- | --- | --- | 0/0 | 50.1 | 50.5 | 50.7 | 0/24 | --- | --- | --- | 0/0 | 49.9 | 51.0 | 52.5 | 0/24 |
| Apr 10 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 50.1 | 50.8 | 53.4 | 0/24 | 49.7 | 50.1 | 50.6 | 0/24 | 49.9 | 50.3 | 50.8 | 0/24 | 121.5 | 122.5 | 123.7 | 24/24 | --- | --- | --- | 0/0 | 50.5 | 50.8 | 51.0 | 0/24 | --- | --- | --- | 0/0 | 50.4 | 51.5 | 53.0 | 0/24 |
| Apr 11 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 50.7 | 51.2 | 52.3 | 0/24 | 50.3 | 50.5 | 50.8 | 0/24 | 50.5 | 50.9 | 51.3 | 0/24 | 122.6 | 123.6 | 124.7 | 24/24 | --- | --- | --- | 0/0 | 50.6 | 50.9 | 51.1 | 0/24 | --- | --- | --- | 0/0 | 50.5 | 51.7 | 53.0 | 0/24 |
| Apr 12 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 50.4 | 50.9 | 51.4 | 0/24 | 50.3 | 50.5 | 50.7 | 0/24 | 50.9 | 51.4 | 51.9 | 0/24 | 123.8 | 124.7 | 125.6 | 24/24 | --- | --- | --- | 0/0 | 51.0 | 51.2 | 51.6 | 0/24 | --- | --- | --- | 0/0 | 51.0 | 51.7 | 52.5 | 0/24 |
| Apr 13 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 50.2 | 50.5 | 51.0 | 0/24 | 50.5 | 50.7 | 50.9 | 0/24 | 51.0 | 51.4 | 51.6 | 0/24 | 124.3 | 124.8 | 125.1 | 24/24 | --- | --- | --- | 0/0 | 51.4 | 51.7 | 52.1 | 0/24 | --- | --- | --- | 0/0 | 51.2 | 52.1 | 53.4 | 0/24 |
| Apr 14 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 50.6 | 50.8 | 51.1 | 0/24 | 50.8 | 51.0 | 51.1 | 0/24 | 50.9 | 51.0 | 51.1 | 0/24 | 123.7 | 124.0 | 124.2 | 24/24 | --- | --- | --- | 0/0 | 51.8 | 51.9 | 52.1 | 0/24 | --- | --- | --- | 0/0 | 51.6 | 52.0 | 52.6 | 0/24 |
| Apr 15 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 50.8 | 51.0 | 51.5 | 0/24 | 50.8 | 51.0 | 51.1 | 0/24 | 51.0 | 51.1 | 51.2 | 0/24 | 123.7 | 124.1 | 124.4 | 24/24 | --- | --- | --- | 0/0 | 51.5 | 51.7 | 51.9 | 0/24 | --- | --- | --- | 0/0 | 51.5 | 51.8 | 52.2 | 0/24 |
| Apr 16 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 50.9 | 51.1 | 51.5 | 0/24 | 51.1 | 51.3 | 51.5 | 0/24 | 51.0 | 51.2 | 51.5 | 0/24 | 123.7 | 124.2 | 124.7 | 24/24 | --- | --- | --- | 0/0 | 51.1 | 51.3 | 51.6 | 0/24 | --- | --- | --- | 0/0 | 51.5 | 51.9 | 52.7 | 0/24 |
| Apr 17 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 51.4 | 51.5 | 51.8 | 0/24 | 51.5 | 51.7 | 51.9 | 0/24 | 51.5 | 51.7 | 52.0 | 0/24 | 124.4 | 125.0 | 125.6 | 24/24 | --- | --- | --- | 0/0 | 51.5 | 51.7 | 52.0 | 0/24 | --- | --- | --- | 0/0 | 51.3 | 51.9 | 53.0 | 0/24 |
| Apr 18 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 51.8 | 51.8 | 52.0 | 0/20 | 51.8 | 52.0 | 52.1 | 0/24 | 51.9 | 52.0 | 52.2 | 0/24 | 125.2 | 125.7 | 126.2 | 24/24 | --- | --- | --- | 0/0 | 51.7 | 51.8 | 52.1 | 0/24 | --- | --- | --- | 0/0 | 51.6 | 52.1 | 52.9 | 0/24 |
| Apr 19 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 52.0 | 52.2 | 52.5 | 0/24 | 51.9 | 52.1 | 52.3 | 0/24 | 125.3 | 125.9 | 126.6 | 24/24 | --- | --- | --- | 0/0 | 51.9 | 52.0 | 52.2 | 0/24 | --- | --- | --- | 0/0 | 51.5 | 52.0 | 52.5 | 0/24 |
| Apr 20 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 52.1 | 52.2 | 52.3 | 0/11 | 52.2 | 52.3 | 52.4 | 0/24 | 52.2 | 52.4 | 52.6 | 0/24 | 126.0 | 126.4 | 126.8 | 24/24 | --- | --- | --- | 0/0 | 52.0 | 52.2 | 52.3 | 0/24 | --- | --- | --- | 0/0 | 51.7 | 52.0 | 52.3 | 0/24 |
| Apr 21 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 52.0 | 52.1 | 52.2 | 0/24 | 52.0 | 52.1 | 52.2 | 0/24 | 52.2 | 52.4 | 52.5 | 0/24 | 126.2 | 126.5 | 126.8 | 24/24 | --- | --- | --- | 0/0 | 52.1 | 52.4 | 52.7 | 0/24 | --- | --- | --- | 0/0 | 51.8 | 52.5 | 53.6 | 0/24 |
| Apr 22 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 52.0 | 52.2 | 52.4 | 0/24 | 52.1 | 52.3 | 52.7 | 0/24 | 52.0 | 52.2 | 52.4 | 0/24 | 125.6 | 126.2 | 127.1 | 24/24 | --- | --- | --- | 0/0 | 52.6 | 52.9 | 53.2 | 0/24 | --- | --- | --- | 0/0 | 52.2 | 53.2 | 54.7 | 0/24 |
| Apr 23 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 52.2 | 52.5 | 52.8 | 0/24 | 52.4 | 52.5 | 52.6 | 0/24 | 52.4 | 52.7 | 53.0 | 0/24 | 126.4 | 126.9 | 127.4 | 24/24 | --- | --- | --- | 0/0 | 52.8 | 52.9 | 53.2 | 0/24 | --- | --- | --- | 0/0 | 52.9 | 53.3 | 53.9 | 0/24 |
| Apr 24 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 52.1 | 52.2 | 52.5 | 0/24 | 52.2 | 52.3 | 52.6 | 0/24 | 52.5 | 52.6 | 52.8 | 0/24 | 126.4 | 127.0 | 127.8 | 24/24 | --- | --- | --- | 0/0 | 52.5 | 52.7 | 53.0 | 0/24 | --- | --- | --- | 0/0 | 52.3 | 53.4 | 54.9 | 0/24 |
| Apr 25 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 52.2 | 53.0 | 54.2 | 0/24 | 52.2 | 52.6 | 53.1 | 0/24 | 52.6 | 52.8 | 53.3 | 0/24 | 126.6 | 127.3 | 128.3 | 24/24 | --- | --- | --- | 0/0 | 52.7 | 53.1 | 53.6 | 0/24 | --- | --- | --- | 0/0 | 52.6 | 53.8 | 55.4 | 0/24 |
| Apr 26 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 52.6 | 53.1 | 53.8 | 0/24 | 52.6 | 52.8 | 53.3 | 0/24 | 52.9 | 53.2 | 53.4 | 0/24 | 127.1 | 127.9 | 129.0 | 24/24 | --- | --- | --- | 0/0 | 53.3 | 53.6 | 54.1 | 0/24 | --- | --- | --- | 0/0 | 53.2 | 54.4 | 56.0 | 0/24 |
| Apr 27 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 52.1 | 52.6 | 53.0 | 0/24 | 52.3 | 52.6 | 52.8 | 0/24 | 53.2 | 53.5 | 53.9 | 0/24 | 128.1 | 128.5 | 129.3 | 24/24 | --- | --- | --- | 0/0 | 53.7 | 54.0 | 54.4 | 0/24 | --- | --- | --- | 0/0 | 54.0 | 55.0 | 56.0 | 0/24 |
| Apr 28 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 52.2 | 52.4 | 52.8 | 0/24 | 52.4 | 52.6 | 52.9 | 0/24 | 52.8 | 53.0 | 53.2 | 0/24 | 127.1 | 127.6 | 128.4 | 24/24 | --- | --- | --- | 0/0 | 53.6 | 53.8 | 54.2 | 0/24 | --- | --- | --- | 0/0 | 53.8 | 54.9 | 56.3 | 0/24 |
| Apr 29 | --- | --- | --- | 0/0 | --- | --- | --- | 0/0 | 52.6 | 53.0 | 54.6 | 0/24 | 52.6 | 53.0 | 53.5 | 0/24 | 53.0 | 53.2 | 53.5 | 0/24 | 127.1 | 127.9 | 128.7 | 24/24 | --- | --- | --- | 0/0 | 53.7 | 54.0 | 54.4 | 0/24 | --- | --- | --- | 0/0 | 53.7 | 54.9 | 56.3 | 0/24 |
| Apr 30 | --- | --- | --- | 0/0 | 52.4 | 52.7 | 53.0 | 0/22 | 53.2 | 53.4 | 53.8 | 0/24 | 53.0 | 53.3 | 53.6 | 0/24 | 53.3 | 53.5 | 53.7 | 0/24 | 127.9 | 128.6 | 129.4 | 24/24 | --- | --- | --- | 0/0 | 53.8 | 54.0 | 54.3 | 0/24 | --- | --- | --- | 0/0 | 54.0 | 55.2 | 56.6 | 0/24 |
| >68 | 0 | 0 | 0 | 0/ 0 |
0 | 0 | 0 | 0/ 22 |
0 | 0 | 0 | 0/ 674 |
0 | 0 | 0 | 0/ 715 |
0 | 0 | 0 | 0/ 711 |
30 | 30 | 30 | 711/ 711 |
0 | 0 | 0 | 0/ 0 |
0 | 0 | 0 | 0/ 590 |
0 | 0 | 0 | 0/ 0 |
0 | 0 | 0 | 0/ 711 |
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 |