FOX RIVER AT MONTGOMERY, IL
USGS 05551540 · Illinois · reports discharge (live), gauge height
Reading FOX RIVER AT MONTGOMERY, IL…
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USGS 05551540 · Illinois · reports discharge (live), gauge height
General guidance from the readings and the published lines named above, not a fishing forecast. Local rules and closures come first.
Reading Nov 5, 8:00 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, 10:00 PM CDT to Nov 5, 8:00 PM CST; ranging 803 to 1,210 ft³/s; latest 1,160 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) | Normal, 25th–75th (ft³/s) |
|---|---|---|---|
| Nov 5, 8:00 PM CST | 1,160 | 11.5 | 732–1,530 |
| Nov 5, 7:00 PM CST | 1,160 | 11.5 | 732–1,530 |
| Nov 5, 6:00 PM CST | 1,160 | 11.5 | 732–1,530 |
| Nov 5, 5:00 PM CST | 1,160 | 11.5 | 732–1,530 |
| Nov 5, 4:00 PM CST | 1,140 | 11.5 | 732–1,530 |
| Nov 5, 3:00 PM CST | 1,140 | 11.5 | 732–1,530 |
| Nov 5, 2:00 PM CST | 1,160 | 11.5 | 732–1,530 |
| Nov 5, 1:00 PM CST | 1,160 | 11.5 | 732–1,530 |
| Nov 5, 12:00 PM CST | 1,160 | 11.5 | 732–1,530 |
| Nov 5, 11:00 AM CST | 1,160 | 11.5 | 732–1,530 |
| Nov 5, 10:00 AM CST | 1,160 | 11.5 | 732–1,530 |
| Nov 5, 9:00 AM CST | 1,160 | 11.5 | 732–1,530 |
| Nov 5, 8:00 AM CST | 1,160 | 11.5 | 732–1,530 |
| Nov 5, 7:00 AM CST | 1,160 | 11.5 | 732–1,530 |
| Nov 5, 6:00 AM CST | 1,170 | 11.6 | 732–1,530 |
| Nov 5, 5:00 AM CST | 1,160 | 11.5 | 732–1,530 |
| Nov 5, 4:00 AM CST | 1,170 | 11.6 | 732–1,530 |
| Nov 5, 3:00 AM CST | 1,170 | 11.6 | 732–1,530 |
| Nov 5, 2:00 AM CST | 1,170 | 11.6 | 732–1,530 |
| Nov 5, 1:00 AM CST | 1,170 | 11.6 | 732–1,530 |
| Nov 5, 12:00 AM CST | 1,190 | 11.6 | 732–1,530 |
| Nov 4, 11:00 PM CST | 1,190 | 11.6 | 692–1,420 |
| Nov 4, 10:00 PM CST | 1,190 | 11.6 | 692–1,420 |
| Nov 4, 9:00 PM CST | 1,190 | 11.6 | 692–1,420 |
| Nov 4, 8:00 PM CST | 1,190 | 11.6 | 692–1,420 |
| Nov 4, 7:00 PM CST | 1,190 | 11.6 | 692–1,420 |
| Nov 4, 6:00 PM CST | 1,210 | 11.6 | 692–1,420 |
| Nov 4, 5:00 PM CST | 1,190 | 11.6 | 692–1,420 |
| Nov 4, 4:00 PM CST | 1,190 | 11.6 | 692–1,420 |
| Nov 4, 3:00 PM CST | 1,190 | 11.6 | 692–1,420 |
| Nov 4, 2:00 PM CST | 1,190 | 11.6 | 692–1,420 |
| Nov 4, 1:00 PM CST | 1,190 | 11.6 | 692–1,420 |
| Nov 4, 12:00 PM CST | 1,190 | 11.6 | 692–1,420 |
| Nov 4, 11:00 AM CST | 1,170 | 11.6 | 692–1,420 |
| Nov 4, 10:00 AM CST | 1,170 | 11.6 | 692–1,420 |
| Nov 4, 9:00 AM CST | 1,170 | 11.6 | 692–1,420 |
| Nov 4, 8:00 AM CST | 1,190 | 11.6 | 692–1,420 |
| Nov 4, 7:00 AM CST | 1,190 | 11.6 | 692–1,420 |
| Nov 4, 6:00 AM CST | 1,190 | 11.6 | 692–1,420 |
| Nov 4, 5:00 AM CST | 1,170 | 11.6 | 692–1,420 |
| Nov 4, 4:00 AM CST | 1,190 | 11.6 | 692–1,420 |
| Nov 4, 3:00 AM CST | 1,160 | 11.5 | 692–1,420 |
| Nov 4, 2:00 AM CST | 1,160 | 11.5 | 692–1,420 |
| Nov 4, 1:00 AM CST | 1,140 | 11.5 | 692–1,420 |
| Nov 4, 12:00 AM CST | 1,140 | 11.5 | 692–1,420 |
| Nov 3, 11:00 PM CST | 1,120 | 11.5 | 752–1,310 |
| Nov 3, 10:00 PM CST | 1,110 | 11.5 | 752–1,310 |
| Nov 3, 9:00 PM CST | 1,110 | 11.5 | 752–1,310 |
| Nov 3, 8:00 PM CST | 1,110 | 11.5 | 752–1,310 |
| Nov 3, 7:00 PM CST | 1,090 | 11.5 | 752–1,310 |
| Nov 3, 6:00 PM CST | 1,090 | 11.5 | 752–1,310 |
| Nov 3, 5:00 PM CST | 1,070 | 11.5 | 752–1,310 |
| Nov 3, 4:00 PM CST | 1,070 | 11.5 | 752–1,310 |
| Nov 3, 3:00 PM CST | 1,060 | 11.5 | 752–1,310 |
| Nov 3, 2:00 PM CST | 1,040 | 11.5 | 752–1,310 |
| Nov 3, 1:00 PM CST | 1,010 | 11.5 | 752–1,310 |
| Nov 3, 12:00 PM CST | 1,010 | 11.5 | 752–1,310 |
| Nov 3, 11:00 AM CST | 990 | 11.4 | 752–1,310 |
| Nov 3, 10:00 AM CST | 973 | 11.4 | 752–1,310 |
| Nov 3, 9:00 AM CST | 973 | 11.4 | 752–1,310 |
| Nov 3, 8:00 AM CST | 973 | 11.4 | 752–1,310 |
| Nov 3, 7:00 AM CST | 973 | 11.4 | 752–1,310 |
| Nov 3, 6:00 AM CST | 973 | 11.4 | 752–1,310 |
| Nov 3, 5:00 AM CST | 957 | 11.4 | 752–1,310 |
| Nov 3, 4:00 AM CST | 957 | 11.4 | 752–1,310 |
| Nov 3, 3:00 AM CST | 973 | 11.4 | 752–1,310 |
| Nov 3, 2:00 AM CST | 973 | 11.4 | 752–1,310 |
| Nov 3, 1:00 AM CST | 973 | 11.4 | 752–1,310 |
| Nov 3, 12:00 AM CST | 957 | 11.4 | 752–1,310 |
| Nov 2, 11:00 PM CST | 973 | 11.4 | 594–1,340 |
| Nov 2, 10:00 PM CST | 973 | 11.4 | 594–1,340 |
| Nov 2, 9:00 PM CST | 973 | 11.4 | 594–1,340 |
| Nov 2, 8:00 PM CST | 973 | 11.4 | 594–1,340 |
| Nov 2, 7:00 PM CST | 973 | 11.4 | 594–1,340 |
| Nov 2, 6:00 PM CST | 973 | 11.4 | 594–1,340 |
| Nov 2, 5:00 PM CST | 990 | 11.4 | 594–1,340 |
| Nov 2, 4:00 PM CST | 973 | 11.4 | 594–1,340 |
| Nov 2, 3:00 PM CST | 973 | 11.4 | 594–1,340 |
| Nov 2, 2:00 PM CST | 973 | 11.4 | 594–1,340 |
| Nov 2, 1:00 PM CST | 973 | 11.4 | 594–1,340 |
| Nov 2, 12:00 PM CST | 973 | 11.4 | 594–1,340 |
| Nov 2, 11:00 AM CST | 990 | 11.4 | 594–1,340 |
| Nov 2, 10:00 AM CST | 990 | 11.4 | 594–1,340 |
| Nov 2, 9:00 AM CST | 990 | 11.4 | 594–1,340 |
| Nov 2, 8:00 AM CST | 990 | 11.4 | 594–1,340 |
| Nov 2, 7:00 AM CST | 990 | 11.4 | 594–1,340 |
| Nov 2, 6:00 AM CST | 973 | 11.4 | 594–1,340 |
| Nov 2, 5:00 AM CST | 973 | 11.4 | 594–1,340 |
| Nov 2, 4:00 AM CST | 973 | 11.4 | 594–1,340 |
| Nov 2, 3:00 AM CST | 973 | 11.4 | 594–1,340 |
| Nov 2, 2:00 AM CST | 973 | 11.4 | 594–1,340 |
| Nov 2, 1:00 AM CST | 973 | 11.4 | 594–1,340 |
| Nov 2, 12:00 AM CST | 973 | 11.4 | 594–1,340 |
| Nov 1, 11:00 PM CST | 973 | 11.4 | 572–1,600 |
| Nov 1, 10:00 PM CST | 973 | 11.4 | 572–1,600 |
| Nov 1, 9:00 PM CST | 957 | 11.4 | 572–1,600 |
| Nov 1, 8:00 PM CST | 973 | 11.4 | 572–1,600 |
| Nov 1, 7:00 PM CST | 973 | 11.4 | 572–1,600 |
| Nov 1, 6:00 PM CST | 973 | 11.4 | 572–1,600 |
| Nov 1, 5:00 PM CST | 990 | 11.4 | 572–1,600 |
| Nov 1, 4:00 PM CST | 973 | 11.4 | 572–1,600 |
| Nov 1, 3:00 PM CST | 973 | 11.4 | 572–1,600 |
| Nov 1, 2:00 PM CST | 973 | 11.4 | 572–1,600 |
| Nov 1, 1:00 PM CST | 973 | 11.4 | 572–1,600 |
| Nov 1, 12:00 PM CST | 973 | 11.4 | 572–1,600 |
| Nov 1, 11:00 AM CST | 973 | 11.4 | 572–1,600 |
| Nov 1, 10:00 AM CST | 990 | 11.4 | 572–1,600 |
| Nov 1, 9:00 AM CST | 990 | 11.4 | 572–1,600 |
| Nov 1, 8:00 AM CST | 973 | 11.4 | 572–1,600 |
| Nov 1, 7:00 AM CST | 973 | 11.4 | 572–1,600 |
| Nov 1, 6:00 AM CST | 973 | 11.4 | 572–1,600 |
| Nov 1, 5:00 AM CST | 957 | 11.4 | 572–1,600 |
| Nov 1, 4:00 AM CST | 957 | 11.4 | 572–1,600 |
| Nov 1, 3:00 AM CST | 957 | 11.4 | 572–1,600 |
| Nov 1, 2:00 AM CST | 957 | 11.4 | 572–1,600 |
| Nov 1, 1:00 AM CST | 957 | 11.4 | 572–1,600 |
| Nov 1, 1:00 AM CDT | 957 | 11.4 | 572–1,600 |
| Nov 1, 12:00 AM CDT | 941 | 11.4 | 590–1,700 |
| Oct 31, 11:00 PM CDT | 957 | 11.4 | 590–1,700 |
| Oct 31, 10:00 PM CDT | 941 | 11.4 | 590–1,700 |
| Oct 31, 9:00 PM CDT | 941 | 11.4 | 590–1,700 |
| Oct 31, 8:00 PM CDT | 926 | 11.4 | 590–1,700 |
| Oct 31, 7:00 PM CDT | 926 | 11.4 | 590–1,700 |
| Oct 31, 6:00 PM CDT | 926 | 11.4 | 590–1,700 |
| Oct 31, 5:00 PM CDT | 926 | 11.4 | 590–1,700 |
| Oct 31, 4:00 PM CDT | 926 | 11.4 | 590–1,700 |
| Oct 31, 3:00 PM CDT | 910 | 11.4 | 590–1,700 |
| Oct 31, 2:00 PM CDT | 910 | 11.4 | 590–1,700 |
| Oct 31, 1:00 PM CDT | 910 | 11.4 | 590–1,700 |
| Oct 31, 12:00 PM CDT | 894 | 11.4 | 590–1,700 |
| Oct 31, 11:00 AM CDT | 894 | 11.4 | 590–1,700 |
| Oct 31, 10:00 AM CDT | 879 | 11.4 | 590–1,700 |
| Oct 31, 9:00 AM CDT | 879 | 11.4 | 590–1,700 |
| Oct 31, 8:00 AM CDT | 863 | 11.4 | 590–1,700 |
| Oct 31, 7:00 AM CDT | 863 | 11.4 | 590–1,700 |
| Oct 31, 6:00 AM CDT | 863 | 11.4 | 590–1,700 |
| Oct 31, 5:00 AM CDT | 848 | 11.4 | 590–1,700 |
| Oct 31, 4:00 AM CDT | 848 | 11.4 | 590–1,700 |
| Oct 31, 3:00 AM CDT | 833 | 11.3 | 590–1,700 |
| Oct 31, 2:00 AM CDT | 833 | 11.3 | 590–1,700 |
| Oct 31, 1:00 AM CDT | 833 | 11.3 | 590–1,700 |
| Oct 31, 12:00 AM CDT | 833 | 11.3 | 632–1,770 |
| Oct 30, 11:00 PM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 10:00 PM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 9:00 PM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 8:00 PM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 7:00 PM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 6:00 PM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 5:00 PM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 4:00 PM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 3:00 PM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 2:00 PM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 1:00 PM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 12:00 PM CDT | 803 | 11.3 | 632–1,770 |
| Oct 30, 11:00 AM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 10:00 AM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 9:00 AM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 8:00 AM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 7:00 AM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 6:00 AM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 5:00 AM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 4:00 AM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 3:00 AM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 2:00 AM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 1:00 AM CDT | 818 | 11.3 | 632–1,770 |
| Oct 30, 12:00 AM CDT | 818 | 11.3 | 633–1,740 |
| Oct 29, 11:00 PM CDT | 833 | 11.3 | 633–1,740 |
| Oct 29, 10:00 PM CDT | 833 | 11.3 | 633–1,740 |
Map of USGS gauge 05551540 and the river around it
Where FOX RIVER AT MONTGOMERY, IL sits, with 7 other gauges on the same river and our water's map point.
Normal for Nov 5: 732–1,530 ft³/s (middle half of 24 years of record). Now: 1,160 ft³/s, normal.
Normal for this date. 1,160 ft³/s is between the 25th and 75th percentiles of daily mean flow for Nov 5 at this gauge over 24 years of record (2003–2026): 10th 423, 25th 732, median 1,000, 75th 1,530, 90th 2,790 ft³/s.
Daily means on record for Nov 5: lowest 361 ft³/s, highest 4,290 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 (−2.5% 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.
No current water-temperature reading at this gauge, so no temperature guidance is given. Take a stream thermometer. 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: 68°F.
Species the agency lists for Fox 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)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 11.5 ft stage, 1,150 ft³/s at Nov 5, 8:00 PM CST (NWS gauge MNGI2; 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, 8:47 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.