| Gauge Name |
Gauge ID |
Date of First Daily Average Temperature over 68°F |
Date of Last Daily Average Temperature over 68°F |
Days with Daily Average Temperature over 68°F |
Maximum Daily Temperature During Year |
Date of Maximum Daily Temperature |
|---|---|---|---|---|---|---|
| Libby Dam and Lake Koocanusa near Libby | LBQM | n/a | n/a | 0 | 41.0°F | Apr 13 |
| Albeni Falls forebay | ALFI | n/a | n/a | 0 | 48.0°F | Apr 13 |
| Albeni Falls tailwater | ALQI | n/a | n/a | 0 | n/a | n/a |
| Chief Joseph Dam forebay | CHJ | n/a | n/a | 0 | 45.5°F | Jan 01 |
| Chief Joseph tailwater | CHQW | n/a | n/a | 0 | 44.2°F | Apr 13 |
| Anatone - Snake River Near Anatone | ANQW | n/a | n/a | 0 | 52.5°F | Apr 08 |
| Dworshak - N. Fork Clearwater R at Ahsahka | DWQI | n/a | n/a | 0 | 44.2°F | Jan 03 |
| Peck - Clearwater River at Peck | PEKI | n/a | n/a | 0 | 46.1°F | Apr 08 |
| Lewiston - Clearwater River near Lewiston | LEWI | n/a | n/a | 0 | 46.8°F | Apr 08 |
| Lower Granite Dam forebay | LWG | n/a | n/a | 0 | 50.4°F | Apr 12 |
| Lower Granite tailwater - Snake R. below dam | LGNW | n/a | n/a | 0 | 50.6°F | Apr 12 |
| Little Goose Dam forebay | LGSA | n/a | n/a | 0 | 50.9°F | Apr 13 |
| Little Goose Dam tailwater (Snake R. below Little Goose) | LGSW | n/a | n/a | 0 | 50.6°F | Apr 13 |
| Lower Monumental Dam forebay on Snake River | LMNA | n/a | n/a | 0 | 50.1°F | Apr 13 |
| Lower Monumental tailwater below the dam on Snake River | LMNW | n/a | n/a | 0 | 50.2°F | Apr 13 |
| Ice Harbor Dam forebay | IHRA | n/a | n/a | 0 | 49.8°F | Apr 13 |
| Ice Harbor tailwater- Snake R. below Goose Is. | IDSW | n/a | n/a | 0 | 49.8°F | Apr 13 |
| Pasco - Columbia Rivers | PAQW | n/a | n/a | 0 | 48.7°F | Apr 12 |
| McNary Dam forebay on Columbia R. | MCNA | n/a | n/a | 0 | 49.9°F | Apr 10 |
| McNary Dam tailwater on Columbia R. | MCPW | n/a | n/a | 0 | 49.7°F | Apr 10 |
| John Day Dam forebay | JDY | n/a | n/a | 0 | 49.8°F | Apr 13 |
| John Day Dam tailwater | JHAW | n/a | n/a | 0 | 50.1°F | Apr 13 |
| The Dalles Dam forebay on Columbia R. | TDA | n/a | n/a | 0 | 50.3°F | Apr 13 |
| The Dalles tailwater Downstream | TDDO | n/a | n/a | 0 | 50.2°F | Apr 13 |
| Bonneville Dam forebay | BON | Mar 17 | Mar 17 | 1 | 381.1°F | Mar 17 |
| Cascade Island | CCIW | n/a | n/a | 0 | 50.5°F | Apr 13 |
| Warrendale | WRNO | n/a | n/a | 0 | 50.5°F | Apr 13 |
| Camas / Washougal | CWMW | n/a | n/a | 0 | n/a | n/a |
| Systemwide Project-Day Total | 1 | |||||
| Systemwide Max | Mar 17 | Mar 17 | 381.1°F | Mar 17 | ||