Good tubing on the Mill River in Northampton, MA, USA is defined as: temperature at least 76°F, chance of precipitation 30% or less, flow rate between 120 and 250 cubic feet per second.
| hour | temperature | precipitation | flow rate (cfps) |
|---|---|---|---|
| 6 pm | 25°F | 16% | 35 |
| 7 pm | 23°F | 32% | 31 |
| 8 pm | 23°F | 54% | 28 |
| 9 pm | 22°F | 73% | 24 |
| 10 pm | 21°F | 84% | 21 |
| 11 pm | 20°F | 86% | 17 |
| 12 am | 19°F | 85% | 14 |
| 1 am | 19°F | 80% | 10 |
| 2 am | 18°F | 78% | 7 |
| 3 am | 19°F | 75% | 3 |
| 4 am | 19°F | 67% | -0 |
| 5 am | 19°F | 57% | -3 |
The photo above was taken on Sunday, August 28, 2011, at noon. The flow rate at that time was 4,380 cubic feet per second. It peaked a couple hours later at 7,020 cfps. Not good tubing!