KOOTENAI RIVER AT PORTHILL ID TOTAL FLOW
USGS 12322001 · Idaho · reports discharge (daily means)
Reading KOOTENAI RIVER AT PORTHILL ID TOTAL FLOW…
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USGS 12322001 · Idaho · reports discharge (daily means)
What the agencies suggest
Carry a pocket thermometer to monitor water temperatureNational Park Service
General guidance from the readings and the published lines named above, not a fishing forecast. Local rules and closures come first.
Normal for Nov 4
Daily mean flow for Wed, Nov 4: USGS publishes this gauge's flow once a day, after the day ends, not as live readings.
Discharge, last 30 days: 23 daily means from Oct 7 to Nov 4; ranging 4,030 to 12,300 ft³/s; latest daily mean 12,200 ft³/s; 7 days without a published value; shaded band: typical range (25th–75th percentile) for each date.
USGS provisional data may be revised. Source: USGS daily values service. Today’s daily mean is published after the day ends.
| Date | Discharge (ft³/s), daily mean | Normal, 25th–75th (ft³/s) |
|---|---|---|
| Nov 4 | 12,200 | 5,600–15,900 |
| Nov 3 | 12,300 | 5,610–15,000 |
| Nov 2 | 9,020 | 5,720–14,700 |
| Nov 1 | 5,300 | 5,590–15,200 |
| Oct 31 | 4,510 | 5,490–15,400 |
| Oct 30 | 4,770 | 5,370–15,800 |
| Oct 29 | 4,830 | 5,440–14,200 |
| Oct 28 | 4,420 | 5,400–14,500 |
| Oct 27 | 4,400 | 5,410–12,600 |
| Oct 26 | 4,570 | 5,530–12,000 |
| Oct 25 | 4,610 | 5,440–11,900 |
| Oct 24 | 4,490 | 5,350–12,100 |
| Oct 23 | 4,090 | 5,300–10,800 |
| Oct 22 | 4,510 | 5,240–11,500 |
| Oct 21 | 4,790 | 5,240–11,800 |
| Oct 20 | 4,640 | 5,270–13,300 |
| Oct 19 | 4,490 | 5,330–11,600 |
| Oct 18 | 4,200 | 5,350–11,100 |
| Oct 17 | 4,080 | 5,410–11,700 |
| Oct 16 | 4,090 | 5,310–11,700 |
| Oct 15 | 4,030 | 5,310–11,600 |
| Oct 14 | 4,190 | 5,350–11,300 |
| Oct 7 | 4,490 | 5,300–10,200 |
Normal for Nov 4: 5,600–15,900 ft³/s (middle half of 98 years of record). Daily mean for Nov 4: 12,200 ft³/s, normal.
Normal for this date. 12,200 ft³/s is between the 25th and 75th percentiles of daily mean flow for Nov 4 at this gauge over 98 years of record (1929–2026): 10th 4,890, 25th 5,600, median 6,970, 75th 15,900, 90th 22,000 ft³/s.
Daily means on record for Nov 4: lowest 2,900 ft³/s, highest 33,400 ft³/s.
Water temperature from USGS 12322000 (KOOTENAI RIVER AT PORTHILL ID), on the same river 0.3 miles away: this gauge does not measure it. Reading Nov 6, 1:45 AM UTC.
Water temperature, last 7 days: 169 readings from Oct 30, 1:45 AM UTC to Nov 6, 1:45 AM UTC; ranging 48 to 50.9 °F; latest 50 °F.
USGS provisional data may be revised.
| Time | Water temperature (°F) |
|---|---|
| Nov 6, 1:45 AM UTC | 50 |
| Nov 6, 12:45 AM UTC | 50 |
| Nov 5, 11:45 PM UTC | 50.2 |
| Nov 5, 10:45 PM UTC | 50.2 |
| Nov 5, 9:45 PM UTC | 50.2 |
| Nov 5, 8:45 PM UTC | 50.2 |
| Nov 5, 7:45 PM UTC | 50.2 |
| Nov 5, 6:45 PM UTC | 50.2 |
| Nov 5, 5:45 PM UTC | 50.2 |
| Nov 5, 4:45 PM UTC | 50.2 |
| Nov 5, 3:45 PM UTC | 50.2 |
| Nov 5, 2:45 PM UTC | 50.2 |
| Nov 5, 1:45 PM UTC | 50.2 |
| Nov 5, 12:45 PM UTC | 50.2 |
| Nov 5, 11:45 AM UTC | 50.2 |
| Nov 5, 10:45 AM UTC | 50.2 |
| Nov 5, 9:45 AM UTC | 50 |
| Nov 5, 8:45 AM UTC | 50 |
| Nov 5, 7:45 AM UTC | 50 |
| Nov 5, 6:45 AM UTC | 50 |
| Nov 5, 5:45 AM UTC | 49.8 |
| Nov 5, 4:45 AM UTC | 49.8 |
| Nov 5, 3:45 AM UTC | 49.6 |
| Nov 5, 2:45 AM UTC | 49.6 |
| Nov 5, 1:45 AM UTC | 49.5 |
| Nov 5, 12:45 AM UTC | 49.5 |
| Nov 4, 11:45 PM UTC | 49.3 |
| Nov 4, 10:45 PM UTC | 49.1 |
| Nov 4, 9:45 PM UTC | 49.1 |
| Nov 4, 8:45 PM UTC | 48.9 |
| Nov 4, 7:45 PM UTC | 48.7 |
| Nov 4, 6:45 PM UTC | 48.6 |
| Nov 4, 5:45 PM UTC | 48.4 |
| Nov 4, 4:45 PM UTC | 48.4 |
| Nov 4, 3:45 PM UTC | 48.2 |
| Nov 4, 2:45 PM UTC | 48.2 |
| Nov 4, 1:45 PM UTC | 48 |
| Nov 4, 12:45 PM UTC | 48 |
| Nov 4, 11:45 AM UTC | 48 |
| Nov 4, 10:45 AM UTC | 48 |
| Nov 4, 9:45 AM UTC | 48 |
| Nov 4, 8:45 AM UTC | 48.2 |
| Nov 4, 7:45 AM UTC | 48.2 |
| Nov 4, 6:45 AM UTC | 48.2 |
| Nov 4, 5:45 AM UTC | 48.2 |
| Nov 4, 4:45 AM UTC | 48.2 |
| Nov 4, 3:45 AM UTC | 48.2 |
| Nov 4, 2:45 AM UTC | 48.4 |
| Nov 4, 1:45 AM UTC | 48.4 |
| Nov 4, 12:45 AM UTC | 48.6 |
| Nov 3, 11:45 PM UTC | 48.6 |
| Nov 3, 10:45 PM UTC | 48.6 |
| Nov 3, 9:45 PM UTC | 48.6 |
| Nov 3, 8:45 PM UTC | 48.6 |
| Nov 3, 7:45 PM UTC | 48.6 |
| Nov 3, 6:45 PM UTC | 48.6 |
| Nov 3, 5:45 PM UTC | 48.6 |
| Nov 3, 4:45 PM UTC | 48.6 |
| Nov 3, 3:45 PM UTC | 48.7 |
| Nov 3, 2:45 PM UTC | 48.7 |
| Nov 3, 1:45 PM UTC | 48.7 |
| Nov 3, 12:45 PM UTC | 48.7 |
| Nov 3, 11:45 AM UTC | 48.9 |
| Nov 3, 10:45 AM UTC | 48.9 |
| Nov 3, 9:45 AM UTC | 48.9 |
| Nov 3, 8:45 AM UTC | 48.9 |
| Nov 3, 7:45 AM UTC | 48.9 |
| Nov 3, 6:45 AM UTC | 48.9 |
| Nov 3, 5:45 AM UTC | 48.9 |
| Nov 3, 4:45 AM UTC | 48.9 |
| Nov 3, 3:45 AM UTC | 48.9 |
| Nov 3, 2:45 AM UTC | 48.9 |
| Nov 3, 1:45 AM UTC | 48.7 |
| Nov 3, 12:45 AM UTC | 48.7 |
| Nov 2, 11:45 PM UTC | 48.9 |
| Nov 2, 10:45 PM UTC | 48.9 |
| Nov 2, 9:45 PM UTC | 48.9 |
| Nov 2, 8:45 PM UTC | 48.9 |
| Nov 2, 7:45 PM UTC | 48.9 |
| Nov 2, 6:45 PM UTC | 48.9 |
| Nov 2, 5:45 PM UTC | 48.9 |
| Nov 2, 4:45 PM UTC | 48.9 |
| Nov 2, 3:45 PM UTC | 48.9 |
| Nov 2, 2:45 PM UTC | 48.9 |
| Nov 2, 1:45 PM UTC | 48.9 |
| Nov 2, 12:45 PM UTC | 48.9 |
| Nov 2, 11:45 AM UTC | 49.1 |
| Nov 2, 10:45 AM UTC | 49.1 |
| Nov 2, 9:45 AM UTC | 49.1 |
| Nov 2, 8:45 AM UTC | 49.3 |
| Nov 2, 7:45 AM UTC | 49.3 |
| Nov 2, 6:45 AM UTC | 49.3 |
| Nov 2, 5:45 AM UTC | 49.5 |
| Nov 2, 4:45 AM UTC | 49.5 |
| Nov 2, 3:45 AM UTC | 49.6 |
| Nov 2, 2:45 AM UTC | 49.6 |
| Nov 2, 1:45 AM UTC | 49.8 |
| Nov 2, 12:45 AM UTC | 49.8 |
| Nov 1, 11:45 PM UTC | 49.8 |
| Nov 1, 10:45 PM UTC | 49.8 |
| Nov 1, 9:45 PM UTC | 49.8 |
| Nov 1, 8:45 PM UTC | 49.8 |
| Nov 1, 7:45 PM UTC | 49.8 |
| Nov 1, 6:45 PM UTC | 49.8 |
| Nov 1, 5:45 PM UTC | 49.8 |
| Nov 1, 4:45 PM UTC | 49.8 |
| Nov 1, 3:45 PM UTC | 49.8 |
| Nov 1, 2:45 PM UTC | 49.8 |
| Nov 1, 1:45 PM UTC | 49.8 |
| Nov 1, 12:45 PM UTC | 49.8 |
| Nov 1, 11:45 AM UTC | 50 |
| Nov 1, 10:45 AM UTC | 50 |
| Nov 1, 9:45 AM UTC | 50 |
| Nov 1, 8:45 AM UTC | 50 |
| Nov 1, 7:45 AM UTC | 50 |
| Nov 1, 6:45 AM UTC | 50.2 |
| Nov 1, 5:45 AM UTC | 50.2 |
| Nov 1, 4:45 AM UTC | 50.2 |
| Nov 1, 3:45 AM UTC | 50.4 |
| Nov 1, 2:45 AM UTC | 50.4 |
| Nov 1, 1:45 AM UTC | 50.5 |
| Nov 1, 12:45 AM UTC | 50.5 |
| Oct 31, 11:45 PM UTC | 50.5 |
| Oct 31, 10:45 PM UTC | 50.7 |
| Oct 31, 9:45 PM UTC | 50.7 |
| Oct 31, 8:45 PM UTC | 50.7 |
| Oct 31, 7:45 PM UTC | 50.5 |
| Oct 31, 6:45 PM UTC | 50.5 |
| Oct 31, 5:45 PM UTC | 50.4 |
| Oct 31, 4:45 PM UTC | 50.4 |
| Oct 31, 3:45 PM UTC | 50.4 |
| Oct 31, 2:45 PM UTC | 50.4 |
| Oct 31, 1:45 PM UTC | 50.4 |
| Oct 31, 12:45 PM UTC | 50.5 |
| Oct 31, 11:45 AM UTC | 50.5 |
| Oct 31, 10:45 AM UTC | 50.5 |
| Oct 31, 9:45 AM UTC | 50.5 |
| Oct 31, 8:45 AM UTC | 50.5 |
| Oct 31, 7:45 AM UTC | 50.7 |
| Oct 31, 6:45 AM UTC | 50.7 |
| Oct 31, 5:45 AM UTC | 50.7 |
| Oct 31, 4:45 AM UTC | 50.7 |
| Oct 31, 3:45 AM UTC | 50.7 |
| Oct 31, 2:45 AM UTC | 50.7 |
| Oct 31, 1:45 AM UTC | 50.9 |
| Oct 31, 12:45 AM UTC | 50.9 |
| Oct 30, 11:45 PM UTC | 50.9 |
| Oct 30, 10:45 PM UTC | 50.9 |
| Oct 30, 9:45 PM UTC | 50.9 |
| Oct 30, 8:45 PM UTC | 50.9 |
| Oct 30, 7:45 PM UTC | 50.9 |
| Oct 30, 6:45 PM UTC | 50.7 |
| Oct 30, 5:45 PM UTC | 50.5 |
| Oct 30, 4:45 PM UTC | 50.5 |
| Oct 30, 3:45 PM UTC | 50.5 |
| Oct 30, 2:45 PM UTC | 50.4 |
| Oct 30, 1:45 PM UTC | 50.5 |
| Oct 30, 12:45 PM UTC | 50.5 |
| Oct 30, 11:45 AM UTC | 50.4 |
| Oct 30, 10:45 AM UTC | 50.5 |
| Oct 30, 9:45 AM UTC | 50.5 |
| Oct 30, 8:45 AM UTC | 50.5 |
| Oct 30, 7:45 AM UTC | 50.5 |
| Oct 30, 6:45 AM UTC | 50.5 |
| Oct 30, 5:45 AM UTC | 50.5 |
| Oct 30, 4:45 AM UTC | 50.4 |
| Oct 30, 3:45 AM UTC | 50.4 |
| Oct 30, 2:45 AM UTC | 50.5 |
| Oct 30, 1:45 AM UTC | 50.5 |
Map of USGS gauge 12322001 and the river around it
Where KOOTENAI RIVER AT PORTHILL ID TOTAL FLOW sits, with 3 other gauges on the same river and our water's map point.
From USGS 12322000 (KOOTENAI RIVER AT PORTHILL ID), on the same river 0.3 miles away; this gauge does not measure water temperature.
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 daily mean compared is provisional).
Under 66°F. Water 50°F now; the highest in the last 24 hours was 50.2°F. In the study Idaho Fish and Game cites, trout landed in water under 66°F survived best: mortality “was 69% higher for trout landed at 73°F water temperatures than for those landed when waters were less than 66°F.” In summer, “early-mornings are typically best while the water is still cool.”
Perspective: Trout fishing during low water and high temperatures (25 July 2024; archived copy) (Idaho Department of Fish and Game) The heat is on, but trout and other coldwater fish have been around the block a time or two (9 Aug 2022; archived copy) (Idaho Department of Fish and Game)Species the agency lists for Kootenai River: Bluegill / Pumpkinseed / Sunfish, Cutthroat Trout, Largemouth Bass, Mountain Whitefish, Rainbow Trout.
From our page for Kootenai River, on the same river as this gauge; the agency list is for the water, not this exact reach. Source: IDFG Recommended Fishing Waters (Idaho Fishing Planner) (Idaho Department of Fish and Game).
Cold water. Water 50°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.
The National Weather Service has no flood-stage gauge here, so no official flood category is shown.
Checked Nov 6, 2:11 AM UTC; 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.