ROCK RIVER AT BYRON, IL
USGS 05440700 · Illinois · reports discharge (live), gauge height, water temperature
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USGS 05440700 · Illinois · reports discharge (live), gauge height, water temperature
General guidance from the readings and the published lines named above, not a fishing forecast. Local rules and closures come first.
Reading Nov 5, 9:15 PM CST · provisional USGS data
Normal for Nov 5 Steady · 24 h Below NWS action stage
Discharge, last 7 days: 168 readings from Oct 29, 11:15 PM CDT to Nov 5, 9:15 PM CST; ranging 4,380 to 5,500 ft³/s; latest 5,470 ft³/s; shaded band: typical range (25th–75th percentile) for each date.
USGS provisional data may be revised. Source: USGS instantaneous values.
| Time | Discharge (ft³/s) | Gauge height (ft) | Water temp (°F) | Normal, 25th–75th (ft³/s) |
|---|---|---|---|---|
| Nov 5, 9:15 PM CST | 5,470 | 6.7 | 57.6 | 3,820–6,500 |
| Nov 5, 8:15 PM CST | 5,500 | 6.71 | 57.7 | 3,820–6,500 |
| Nov 5, 7:15 PM CST | 5,500 | 6.71 | 57.9 | 3,820–6,500 |
| Nov 5, 6:15 PM CST | 5,500 | 6.71 | 57.9 | 3,820–6,500 |
| Nov 5, 5:15 PM CST | 5,500 | 6.71 | 57.9 | 3,820–6,500 |
| Nov 5, 4:15 PM CST | 5,500 | 6.71 | 57.9 | 3,820–6,500 |
| Nov 5, 3:15 PM CST | 5,500 | 6.71 | 57.9 | 3,820–6,500 |
| Nov 5, 2:15 PM CST | 5,500 | 6.71 | 57.9 | 3,820–6,500 |
| Nov 5, 1:15 PM CST | 5,470 | 6.7 | 57.7 | 3,820–6,500 |
| Nov 5, 12:15 PM CST | 5,470 | 6.7 | 57.6 | 3,820–6,500 |
| Nov 5, 11:15 AM CST | 5,390 | 6.66 | 57.4 | 3,820–6,500 |
| Nov 5, 10:15 AM CST | 5,340 | 6.64 | 57.2 | 3,820–6,500 |
| Nov 5, 9:15 AM CST | 5,300 | 6.62 | 57.2 | 3,820–6,500 |
| Nov 5, 8:15 AM CST | 5,280 | 6.61 | 57.2 | 3,820–6,500 |
| Nov 5, 7:15 AM CST | 5,250 | 6.6 | 57.2 | 3,820–6,500 |
| Nov 5, 6:15 AM CST | 5,230 | 6.59 | 57.4 | 3,820–6,500 |
| Nov 5, 5:15 AM CST | 5,210 | 6.58 | 57.4 | 3,820–6,500 |
| Nov 5, 4:15 AM CST | 5,170 | 6.56 | 57.6 | 3,820–6,500 |
| Nov 5, 3:15 AM CST | 5,170 | 6.56 | 57.7 | 3,820–6,500 |
| Nov 5, 2:15 AM CST | 5,100 | 6.53 | 57.7 | 3,820–6,500 |
| Nov 5, 1:15 AM CST | 5,080 | 6.52 | 57.9 | 3,820–6,500 |
| Nov 5, 12:15 AM CST | 5,120 | 6.54 | 58.1 | 3,820–6,500 |
| Nov 4, 11:15 PM CST | 5,100 | 6.53 | 58.3 | 3,660–6,480 |
| Nov 4, 10:15 PM CST | 5,040 | 6.5 | 58.3 | 3,660–6,480 |
| Nov 4, 9:15 PM CST | 5,010 | 6.49 | 58.5 | 3,660–6,480 |
| Nov 4, 8:15 PM CST | 5,060 | 6.51 | 58.6 | 3,660–6,480 |
| Nov 4, 7:15 PM CST | 5,010 | 6.49 | 58.6 | 3,660–6,480 |
| Nov 4, 6:15 PM CST | 4,990 | 6.48 | 58.8 | 3,660–6,480 |
| Nov 4, 5:15 PM CST | 4,970 | 6.47 | 59 | 3,660–6,480 |
| Nov 4, 4:15 PM CST | 4,950 | 6.46 | 59 | 3,660–6,480 |
| Nov 4, 3:15 PM CST | 4,950 | 6.46 | 59 | 3,660–6,480 |
| Nov 4, 2:15 PM CST | 4,990 | 6.48 | 59 | 3,660–6,480 |
| Nov 4, 1:15 PM CST | 4,950 | 6.46 | 59 | 3,660–6,480 |
| Nov 4, 12:15 PM CST | 4,950 | 6.46 | 59 | 3,660–6,480 |
| Nov 4, 11:15 AM CST | 4,950 | 6.46 | 59 | 3,660–6,480 |
| Nov 4, 10:15 AM CST | 4,930 | 6.45 | 59 | 3,660–6,480 |
| Nov 4, 9:15 AM CST | 4,890 | 6.43 | 59 | 3,660–6,480 |
| Nov 4, 8:15 AM CST | 4,910 | 6.44 | 59 | 3,660–6,480 |
| Nov 4, 7:15 AM CST | 4,800 | 6.39 | 59 | 3,660–6,480 |
| Nov 4, 6:15 AM CST | 4,840 | 6.41 | 59 | 3,660–6,480 |
| Nov 4, 5:15 AM CST | 4,800 | 6.39 | 59 | 3,660–6,480 |
| Nov 4, 4:15 AM CST | 4,760 | 6.37 | 59 | 3,660–6,480 |
| Nov 4, 3:15 AM CST | 4,740 | 6.36 | 59 | 3,660–6,480 |
| Nov 4, 2:15 AM CST | 4,720 | 6.35 | 59.2 | 3,660–6,480 |
| Nov 4, 1:15 AM CST | 4,720 | 6.35 | 59.2 | 3,660–6,480 |
| Nov 4, 12:15 AM CST | 4,690 | 6.34 | 59.2 | 3,660–6,480 |
| Nov 3, 11:15 PM CST | 4,630 | 6.31 | 59.2 | 3,670–6,680 |
| Nov 3, 10:15 PM CST | 4,570 | 6.28 | 59.2 | 3,670–6,680 |
| Nov 3, 9:15 PM CST | 4,590 | 6.29 | 59.2 | 3,670–6,680 |
| Nov 3, 8:15 PM CST | 4,590 | 6.29 | 59.2 | 3,670–6,680 |
| Nov 3, 7:15 PM CST | 4,570 | 6.28 | 59.2 | 3,670–6,680 |
| Nov 3, 6:15 PM CST | 4,570 | 6.28 | 59.2 | 3,670–6,680 |
| Nov 3, 5:15 PM CST | 4,570 | 6.28 | 59.2 | 3,670–6,680 |
| Nov 3, 4:15 PM CST | 4,570 | 6.28 | 59 | 3,670–6,680 |
| Nov 3, 3:15 PM CST | 4,570 | 6.28 | 59 | 3,670–6,680 |
| Nov 3, 2:15 PM CST | 4,480 | 6.24 | 59 | 3,670–6,680 |
| Nov 3, 1:15 PM CST | 4,460 | 6.23 | 58.8 | 3,670–6,680 |
| Nov 3, 12:15 PM CST | 4,510 | 6.25 | 58.6 | 3,670–6,680 |
| Nov 3, 11:15 AM CST | 4,510 | 6.25 | 58.5 | 3,670–6,680 |
| Nov 3, 10:15 AM CST | 4,480 | 6.24 | 58.5 | 3,670–6,680 |
| Nov 3, 9:15 AM CST | 4,420 | 6.21 | 58.3 | 3,670–6,680 |
| Nov 3, 8:15 AM CST | 4,460 | 6.23 | 58.3 | 3,670–6,680 |
| Nov 3, 7:15 AM CST | 4,460 | 6.23 | 58.1 | 3,670–6,680 |
| Nov 3, 6:15 AM CST | 4,460 | 6.23 | 58.1 | 3,670–6,680 |
| Nov 3, 5:15 AM CST | 4,480 | 6.24 | 58.1 | 3,670–6,680 |
| Nov 3, 4:15 AM CST | 4,480 | 6.24 | 57.9 | 3,670–6,680 |
| Nov 3, 3:15 AM CST | 4,460 | 6.23 | 57.9 | 3,670–6,680 |
| Nov 3, 2:15 AM CST | 4,440 | 6.22 | 57.9 | 3,670–6,680 |
| Nov 3, 1:15 AM CST | 4,480 | 6.24 | 57.7 | 3,670–6,680 |
| Nov 3, 12:15 AM CST | 4,480 | 6.24 | 57.7 | 3,670–6,680 |
| Nov 2, 11:15 PM CST | 4,480 | 6.24 | 57.6 | 3,660–6,810 |
| Nov 2, 10:15 PM CST | 4,460 | 6.23 | 57.6 | 3,660–6,810 |
| Nov 2, 9:15 PM CST | 4,480 | 6.24 | 57.6 | 3,660–6,810 |
| Nov 2, 8:15 PM CST | 4,460 | 6.23 | 57.4 | 3,660–6,810 |
| Nov 2, 7:15 PM CST | 4,460 | 6.23 | 57.4 | 3,660–6,810 |
| Nov 2, 6:15 PM CST | 4,460 | 6.23 | 57.2 | 3,660–6,810 |
| Nov 2, 5:15 PM CST | 4,460 | 6.23 | 57.2 | 3,660–6,810 |
| Nov 2, 4:15 PM CST | 4,460 | 6.23 | 57.2 | 3,660–6,810 |
| Nov 2, 3:15 PM CST | 4,510 | 6.25 | 57 | 3,660–6,810 |
| Nov 2, 2:15 PM CST | 4,480 | 6.24 | 57 | 3,660–6,810 |
| Nov 2, 1:15 PM CST | 4,480 | 6.24 | 56.8 | 3,660–6,810 |
| Nov 2, 12:15 PM CST | 4,460 | 6.23 | 56.8 | 3,660–6,810 |
| Nov 2, 11:15 AM CST | 4,480 | 6.24 | 56.7 | 3,660–6,810 |
| Nov 2, 10:15 AM CST | 4,480 | 6.24 | 56.7 | 3,660–6,810 |
| Nov 2, 9:15 AM CST | 4,480 | 6.24 | 56.7 | 3,660–6,810 |
| Nov 2, 8:15 AM CST | 4,460 | 6.23 | 56.5 | 3,660–6,810 |
| Nov 2, 7:15 AM CST | 4,460 | 6.23 | 56.7 | 3,660–6,810 |
| Nov 2, 6:15 AM CST | 4,460 | 6.23 | 56.7 | 3,660–6,810 |
| Nov 2, 5:15 AM CST | 4,460 | 6.23 | 56.7 | 3,660–6,810 |
| Nov 2, 4:15 AM CST | 4,460 | 6.23 | 56.8 | 3,660–6,810 |
| Nov 2, 3:15 AM CST | 4,460 | 6.23 | 56.8 | 3,660–6,810 |
| Nov 2, 2:15 AM CST | 4,480 | 6.24 | 57 | 3,660–6,810 |
| Nov 2, 1:15 AM CST | 4,460 | 6.23 | 57.2 | 3,660–6,810 |
| Nov 2, 12:15 AM CST | 4,480 | 6.24 | 57.2 | 3,660–6,810 |
| Nov 1, 11:15 PM CST | 4,460 | 6.23 | 57.4 | 3,700–7,080 |
| Nov 1, 10:15 PM CST | 4,460 | 6.23 | 57.6 | 3,700–7,080 |
| Nov 1, 9:15 PM CST | 4,460 | 6.23 | 57.6 | 3,700–7,080 |
| Nov 1, 8:15 PM CST | 4,460 | 6.23 | 57.6 | 3,700–7,080 |
| Nov 1, 7:15 PM CST | 4,460 | 6.23 | 57.7 | 3,700–7,080 |
| Nov 1, 6:15 PM CST | 4,460 | 6.23 | 57.7 | 3,700–7,080 |
| Nov 1, 5:15 PM CST | 4,460 | 6.23 | 57.7 | 3,700–7,080 |
| Nov 1, 4:15 PM CST | 4,460 | 6.23 | 57.7 | 3,700–7,080 |
| Nov 1, 3:15 PM CST | 4,480 | 6.24 | 57.6 | 3,700–7,080 |
| Nov 1, 2:15 PM CST | 4,480 | 6.24 | 57.4 | 3,700–7,080 |
| Nov 1, 1:15 PM CST | 4,480 | 6.24 | 57.2 | 3,700–7,080 |
| Nov 1, 12:15 PM CST | 4,480 | 6.24 | 56.8 | 3,700–7,080 |
| Nov 1, 11:15 AM CST | 4,480 | 6.24 | 56.7 | 3,700–7,080 |
| Nov 1, 10:15 AM CST | 4,510 | 6.25 | 56.5 | 3,700–7,080 |
| Nov 1, 9:15 AM CST | 4,510 | 6.25 | 56.5 | 3,700–7,080 |
| Nov 1, 8:15 AM CST | 4,510 | 6.25 | 56.3 | 3,700–7,080 |
| Nov 1, 7:15 AM CST | 4,510 | 6.25 | 56.3 | 3,700–7,080 |
| Nov 1, 6:15 AM CST | 4,510 | 6.25 | 56.3 | 3,700–7,080 |
| Nov 1, 5:15 AM CST | 4,530 | 6.26 | 56.3 | 3,700–7,080 |
| Nov 1, 4:15 AM CST | 4,510 | 6.25 | 56.5 | 3,700–7,080 |
| Nov 1, 3:15 AM CST | 4,510 | 6.25 | 56.5 | 3,700–7,080 |
| Nov 1, 2:15 AM CST | 4,530 | 6.26 | 56.7 | 3,700–7,080 |
| Nov 1, 1:15 AM CST | 4,530 | 6.26 | 56.7 | 3,700–7,080 |
| Nov 1, 1:15 AM CDT | 4,530 | 6.26 | 56.8 | 3,700–7,080 |
| Nov 1, 12:15 AM CDT | 4,510 | 6.25 | 57 | 3,680–7,240 |
| Oct 31, 11:15 PM CDT | 4,510 | 6.25 | 57 | 3,680–7,240 |
| Oct 31, 10:15 PM CDT | 4,510 | 6.25 | 57.2 | 3,680–7,240 |
| Oct 31, 9:15 PM CDT | 4,480 | 6.24 | 57.2 | 3,680–7,240 |
| Oct 31, 8:15 PM CDT | 4,480 | 6.24 | 57.2 | 3,680–7,240 |
| Oct 31, 7:15 PM CDT | 4,480 | 6.24 | 57.4 | 3,680–7,240 |
| Oct 31, 6:15 PM CDT | 4,480 | 6.24 | 57.4 | 3,680–7,240 |
| Oct 31, 5:15 PM CDT | 4,510 | 6.25 | 57.4 | 3,680–7,240 |
| Oct 31, 4:15 PM CDT | 4,510 | 6.25 | 57.2 | 3,680–7,240 |
| Oct 31, 3:15 PM CDT | 4,480 | 6.24 | 57.2 | 3,680–7,240 |
| Oct 31, 2:15 PM CDT | 4,510 | 6.25 | 57 | 3,680–7,240 |
| Oct 31, 1:15 PM CDT | 4,480 | 6.24 | 57 | 3,680–7,240 |
| Oct 31, 12:15 PM CDT | 4,460 | 6.23 | 56.8 | 3,680–7,240 |
| Oct 31, 11:15 AM CDT | 4,460 | 6.23 | 56.8 | 3,680–7,240 |
| Oct 31, 10:15 AM CDT | 4,440 | 6.22 | 56.7 | 3,680–7,240 |
| Oct 31, 9:15 AM CDT | 4,440 | 6.22 | 56.7 | 3,680–7,240 |
| Oct 31, 8:15 AM CDT | 4,420 | 6.21 | 56.7 | 3,680–7,240 |
| Oct 31, 7:15 AM CDT | 4,420 | 6.21 | 56.8 | 3,680–7,240 |
| Oct 31, 6:15 AM CDT | 4,420 | 6.21 | 56.8 | 3,680–7,240 |
| Oct 31, 5:15 AM CDT | 4,420 | 6.21 | 57 | 3,680–7,240 |
| Oct 31, 4:15 AM CDT | 4,420 | 6.21 | 57.2 | 3,680–7,240 |
| Oct 31, 3:15 AM CDT | 4,420 | 6.21 | 57.4 | 3,680–7,240 |
| Oct 31, 2:15 AM CDT | 4,420 | 6.21 | 57.4 | 3,680–7,240 |
| Oct 31, 1:15 AM CDT | 4,420 | 6.21 | 57.6 | 3,680–7,240 |
| Oct 31, 12:15 AM CDT | 4,420 | 6.21 | 57.7 | 3,720–7,440 |
| Oct 30, 11:15 PM CDT | 4,400 | 6.2 | 57.9 | 3,720–7,440 |
| Oct 30, 10:15 PM CDT | 4,400 | 6.2 | 57.9 | 3,720–7,440 |
| Oct 30, 9:15 PM CDT | 4,400 | 6.2 | 58.1 | 3,720–7,440 |
| Oct 30, 8:15 PM CDT | 4,400 | 6.2 | 58.1 | 3,720–7,440 |
| Oct 30, 7:15 PM CDT | 4,380 | 6.19 | 58.1 | 3,720–7,440 |
| Oct 30, 6:15 PM CDT | 4,400 | 6.2 | 58.1 | 3,720–7,440 |
| Oct 30, 5:15 PM CDT | 4,400 | 6.2 | 57.9 | 3,720–7,440 |
| Oct 30, 4:15 PM CDT | 4,420 | 6.21 | 57.7 | 3,720–7,440 |
| Oct 30, 3:15 PM CDT | 4,420 | 6.21 | 57.6 | 3,720–7,440 |
| Oct 30, 2:15 PM CDT | 4,440 | 6.22 | 57.4 | 3,720–7,440 |
| Oct 30, 1:15 PM CDT | 4,460 | 6.23 | 57.4 | 3,720–7,440 |
| Oct 30, 12:15 PM CDT | 4,480 | 6.24 | 57.2 | 3,720–7,440 |
| Oct 30, 11:15 AM CDT | 4,530 | 6.26 | 57 | 3,720–7,440 |
| Oct 30, 10:15 AM CDT | 4,570 | 6.28 | 56.8 | 3,720–7,440 |
| Oct 30, 9:15 AM CDT | 4,590 | 6.29 | 56.8 | 3,720–7,440 |
| Oct 30, 8:15 AM CDT | 4,610 | 6.3 | 57 | 3,720–7,440 |
| Oct 30, 7:15 AM CDT | 4,610 | 6.3 | 57.2 | 3,720–7,440 |
| Oct 30, 6:15 AM CDT | 4,630 | 6.31 | 57.4 | 3,720–7,440 |
| Oct 30, 5:15 AM CDT | 4,630 | 6.31 | 57.7 | 3,720–7,440 |
| Oct 30, 4:15 AM CDT | 4,650 | 6.32 | 57.9 | 3,720–7,440 |
| Oct 30, 3:15 AM CDT | 4,670 | 6.33 | 58.3 | 3,720–7,440 |
| Oct 30, 2:15 AM CDT | 4,670 | 6.33 | 58.6 | 3,720–7,440 |
| Oct 30, 1:15 AM CDT | 4,690 | 6.34 | 59.2 | 3,720–7,440 |
| Oct 30, 12:15 AM CDT | 4,740 | 6.36 | 59.5 | 3,560–7,520 |
| Oct 29, 11:15 PM CDT | 4,760 | 6.37 | 59.9 | 3,560–7,520 |
Water temperature, last 7 days: 168 readings from Oct 29, 11:15 PM CDT to Nov 5, 9:15 PM CST; ranging 56.3 to 59.9 °F; latest 57.6 °F.
USGS provisional data may be revised. Source: USGS instantaneous values.
| Time | Water temperature (°F) |
|---|---|
| Nov 5, 9:15 PM CST | 57.6 |
| Nov 5, 8:15 PM CST | 57.7 |
| Nov 5, 7:15 PM CST | 57.9 |
| Nov 5, 6:15 PM CST | 57.9 |
| Nov 5, 5:15 PM CST | 57.9 |
| Nov 5, 4:15 PM CST | 57.9 |
| Nov 5, 3:15 PM CST | 57.9 |
| Nov 5, 2:15 PM CST | 57.9 |
| Nov 5, 1:15 PM CST | 57.7 |
| Nov 5, 12:15 PM CST | 57.6 |
| Nov 5, 11:15 AM CST | 57.4 |
| Nov 5, 10:15 AM CST | 57.2 |
| Nov 5, 9:15 AM CST | 57.2 |
| Nov 5, 8:15 AM CST | 57.2 |
| Nov 5, 7:15 AM CST | 57.2 |
| Nov 5, 6:15 AM CST | 57.4 |
| Nov 5, 5:15 AM CST | 57.4 |
| Nov 5, 4:15 AM CST | 57.6 |
| Nov 5, 3:15 AM CST | 57.7 |
| Nov 5, 2:15 AM CST | 57.7 |
| Nov 5, 1:15 AM CST | 57.9 |
| Nov 5, 12:15 AM CST | 58.1 |
| Nov 4, 11:15 PM CST | 58.3 |
| Nov 4, 10:15 PM CST | 58.3 |
| Nov 4, 9:15 PM CST | 58.5 |
| Nov 4, 8:15 PM CST | 58.6 |
| Nov 4, 7:15 PM CST | 58.6 |
| Nov 4, 6:15 PM CST | 58.8 |
| Nov 4, 5:15 PM CST | 59 |
| Nov 4, 4:15 PM CST | 59 |
| Nov 4, 3:15 PM CST | 59 |
| Nov 4, 2:15 PM CST | 59 |
| Nov 4, 1:15 PM CST | 59 |
| Nov 4, 12:15 PM CST | 59 |
| Nov 4, 11:15 AM CST | 59 |
| Nov 4, 10:15 AM CST | 59 |
| Nov 4, 9:15 AM CST | 59 |
| Nov 4, 8:15 AM CST | 59 |
| Nov 4, 7:15 AM CST | 59 |
| Nov 4, 6:15 AM CST | 59 |
| Nov 4, 5:15 AM CST | 59 |
| Nov 4, 4:15 AM CST | 59 |
| Nov 4, 3:15 AM CST | 59 |
| Nov 4, 2:15 AM CST | 59.2 |
| Nov 4, 1:15 AM CST | 59.2 |
| Nov 4, 12:15 AM CST | 59.2 |
| Nov 3, 11:15 PM CST | 59.2 |
| Nov 3, 10:15 PM CST | 59.2 |
| Nov 3, 9:15 PM CST | 59.2 |
| Nov 3, 8:15 PM CST | 59.2 |
| Nov 3, 7:15 PM CST | 59.2 |
| Nov 3, 6:15 PM CST | 59.2 |
| Nov 3, 5:15 PM CST | 59.2 |
| Nov 3, 4:15 PM CST | 59 |
| Nov 3, 3:15 PM CST | 59 |
| Nov 3, 2:15 PM CST | 59 |
| Nov 3, 1:15 PM CST | 58.8 |
| Nov 3, 12:15 PM CST | 58.6 |
| Nov 3, 11:15 AM CST | 58.5 |
| Nov 3, 10:15 AM CST | 58.5 |
| Nov 3, 9:15 AM CST | 58.3 |
| Nov 3, 8:15 AM CST | 58.3 |
| Nov 3, 7:15 AM CST | 58.1 |
| Nov 3, 6:15 AM CST | 58.1 |
| Nov 3, 5:15 AM CST | 58.1 |
| Nov 3, 4:15 AM CST | 57.9 |
| Nov 3, 3:15 AM CST | 57.9 |
| Nov 3, 2:15 AM CST | 57.9 |
| Nov 3, 1:15 AM CST | 57.7 |
| Nov 3, 12:15 AM CST | 57.7 |
| Nov 2, 11:15 PM CST | 57.6 |
| Nov 2, 10:15 PM CST | 57.6 |
| Nov 2, 9:15 PM CST | 57.6 |
| Nov 2, 8:15 PM CST | 57.4 |
| Nov 2, 7:15 PM CST | 57.4 |
| Nov 2, 6:15 PM CST | 57.2 |
| Nov 2, 5:15 PM CST | 57.2 |
| Nov 2, 4:15 PM CST | 57.2 |
| Nov 2, 3:15 PM CST | 57 |
| Nov 2, 2:15 PM CST | 57 |
| Nov 2, 1:15 PM CST | 56.8 |
| Nov 2, 12:15 PM CST | 56.8 |
| Nov 2, 11:15 AM CST | 56.7 |
| Nov 2, 10:15 AM CST | 56.7 |
| Nov 2, 9:15 AM CST | 56.7 |
| Nov 2, 8:15 AM CST | 56.5 |
| Nov 2, 7:15 AM CST | 56.7 |
| Nov 2, 6:15 AM CST | 56.7 |
| Nov 2, 5:15 AM CST | 56.7 |
| Nov 2, 4:15 AM CST | 56.8 |
| Nov 2, 3:15 AM CST | 56.8 |
| Nov 2, 2:15 AM CST | 57 |
| Nov 2, 1:15 AM CST | 57.2 |
| Nov 2, 12:15 AM CST | 57.2 |
| Nov 1, 11:15 PM CST | 57.4 |
| Nov 1, 10:15 PM CST | 57.6 |
| Nov 1, 9:15 PM CST | 57.6 |
| Nov 1, 8:15 PM CST | 57.6 |
| Nov 1, 7:15 PM CST | 57.7 |
| Nov 1, 6:15 PM CST | 57.7 |
| Nov 1, 5:15 PM CST | 57.7 |
| Nov 1, 4:15 PM CST | 57.7 |
| Nov 1, 3:15 PM CST | 57.6 |
| Nov 1, 2:15 PM CST | 57.4 |
| Nov 1, 1:15 PM CST | 57.2 |
| Nov 1, 12:15 PM CST | 56.8 |
| Nov 1, 11:15 AM CST | 56.7 |
| Nov 1, 10:15 AM CST | 56.5 |
| Nov 1, 9:15 AM CST | 56.5 |
| Nov 1, 8:15 AM CST | 56.3 |
| Nov 1, 7:15 AM CST | 56.3 |
| Nov 1, 6:15 AM CST | 56.3 |
| Nov 1, 5:15 AM CST | 56.3 |
| Nov 1, 4:15 AM CST | 56.5 |
| Nov 1, 3:15 AM CST | 56.5 |
| Nov 1, 2:15 AM CST | 56.7 |
| Nov 1, 1:15 AM CST | 56.7 |
| Nov 1, 1:15 AM CDT | 56.8 |
| Nov 1, 12:15 AM CDT | 57 |
| Oct 31, 11:15 PM CDT | 57 |
| Oct 31, 10:15 PM CDT | 57.2 |
| Oct 31, 9:15 PM CDT | 57.2 |
| Oct 31, 8:15 PM CDT | 57.2 |
| Oct 31, 7:15 PM CDT | 57.4 |
| Oct 31, 6:15 PM CDT | 57.4 |
| Oct 31, 5:15 PM CDT | 57.4 |
| Oct 31, 4:15 PM CDT | 57.2 |
| Oct 31, 3:15 PM CDT | 57.2 |
| Oct 31, 2:15 PM CDT | 57 |
| Oct 31, 1:15 PM CDT | 57 |
| Oct 31, 12:15 PM CDT | 56.8 |
| Oct 31, 11:15 AM CDT | 56.8 |
| Oct 31, 10:15 AM CDT | 56.7 |
| Oct 31, 9:15 AM CDT | 56.7 |
| Oct 31, 8:15 AM CDT | 56.7 |
| Oct 31, 7:15 AM CDT | 56.8 |
| Oct 31, 6:15 AM CDT | 56.8 |
| Oct 31, 5:15 AM CDT | 57 |
| Oct 31, 4:15 AM CDT | 57.2 |
| Oct 31, 3:15 AM CDT | 57.4 |
| Oct 31, 2:15 AM CDT | 57.4 |
| Oct 31, 1:15 AM CDT | 57.6 |
| Oct 31, 12:15 AM CDT | 57.7 |
| Oct 30, 11:15 PM CDT | 57.9 |
| Oct 30, 10:15 PM CDT | 57.9 |
| Oct 30, 9:15 PM CDT | 58.1 |
| Oct 30, 8:15 PM CDT | 58.1 |
| Oct 30, 7:15 PM CDT | 58.1 |
| Oct 30, 6:15 PM CDT | 58.1 |
| Oct 30, 5:15 PM CDT | 57.9 |
| Oct 30, 4:15 PM CDT | 57.7 |
| Oct 30, 3:15 PM CDT | 57.6 |
| Oct 30, 2:15 PM CDT | 57.4 |
| Oct 30, 1:15 PM CDT | 57.4 |
| Oct 30, 12:15 PM CDT | 57.2 |
| Oct 30, 11:15 AM CDT | 57 |
| Oct 30, 10:15 AM CDT | 56.8 |
| Oct 30, 9:15 AM CDT | 56.8 |
| Oct 30, 8:15 AM CDT | 57 |
| Oct 30, 7:15 AM CDT | 57.2 |
| Oct 30, 6:15 AM CDT | 57.4 |
| Oct 30, 5:15 AM CDT | 57.7 |
| Oct 30, 4:15 AM CDT | 57.9 |
| Oct 30, 3:15 AM CDT | 58.3 |
| Oct 30, 2:15 AM CDT | 58.6 |
| Oct 30, 1:15 AM CDT | 59.2 |
| Oct 30, 12:15 AM CDT | 59.5 |
| Oct 29, 11:15 PM CDT | 59.9 |
Map of USGS gauge 05440700 and the river around it
Where ROCK RIVER AT BYRON, IL sits, with 5 other gauges on the same river and our water's map point.
Normal for Nov 5: 3,820–6,500 ft³/s (middle half of 26 years of record). Now: 5,470 ft³/s, normal.
Normal for this date. 5,470 ft³/s is between the 25th and 75th percentiles of daily mean flow for Nov 5 at this gauge over 26 years of record (2001–2026): 10th 2,860, 25th 3,820, median 4,790, 75th 6,500, 90th 12,000 ft³/s.
Daily means on record for Nov 5: lowest 1,380 ft³/s, highest 16,100 ft³/s.
Classes as USGS labels them (hyswap: flow categories (WDFN_stats schema) (U.S. Geological Survey) ); percentiles from the USGS daily statistics (U.S. Geological Survey) (approved daily means; the reading is provisional and instantaneous).
Steady over 24 hours (+9.2% discharge). Rising or falling means a change of more than 10% in discharge (or 0.2 ft of gauge height) over 24 hours; our rule of thumb, not a USGS class.
The agency list on file names no trout, salmon or steelhead here; these are the lines for coldwater fish if you are after them.
Federal guidance. Illinois DNR publishes no water-temperature line for trout anglers that we found. The lines below are the National Park Service's, federal guidance, not a Illinois rule:
Under the federal 68°F line. Water 57.6°F now; the highest in the last 24 hours was 58.5°F. That is under the 68°F at which the National Park Service, at Grand Teton National Park, recommends anglers stop fishing in the afternoon (“cease fishing at 2 p.m. when water temperatures are likely to exceed 68°F”). Water warms through the afternoon, so check again later in the day: “Carry a pocket thermometer to monitor water temperature.”
High water temperatures prompt fishing advisory in Grand Teton National Park (29 July 2022) (National Park Service)Species the agency lists for Rock River: Smallmouth Bass.
Source: Site-specific smallmouth bass regulations on rivers and creeks (Illinois Department of Natural Resources).
Below NWS action stage. The National Weather Service reports this gauge below its action stage. That is not a statement that wading is safe.
Flood categories: action stage, minor, moderate and major flooding (National Weather Service)Cold water. Water 57.6°F. NWS: “Cold shock can be just as severe and dangerous from water temperatures of 50-60°F (10-15°C) as it is from water at 35°F (2°C).” “Always wear a life jacket in and around the water.”
Cold Water Hazards and Safety (National Weather Service)Turn Around Don't Drown. “A mere 6 inches of fast-moving flood water can knock over an adult.” No flow number makes a crossing safe; if in doubt, stay out.
Turn Around Don't Drown (National Weather Service)Guidance from the readings above and the published thresholds named with each line; not a fishing forecast, a safety guarantee or a statement about access. Local rules and closures come first.
Below NWS action stage. The National Weather Service reports this gauge below its action stage. That is not a statement that wading is safe.
NWS observed 6.58 ft stage, 5,210 ft³/s at Nov 5, 9:15 PM CST (NWS gauge BYRI2; its stage datum can differ from the USGS gauge height).
Forecasts are issued as needed during times of high water, but are not routinely available.
Open the NWS gauge page · What the categories mean (National Weather Service)
Checked Nov 5, 10:05 PM CST; readings refresh at most every 15 minutes and statistics daily. Provisional USGS data can be revised. Conditions change: re-check before you go. This is general guidance, not a fishing forecast, a safety guarantee or a statement about access.