HENRYS FORK NR ISLAND PARK ID
USGS 13042500 · Idaho · reports discharge (live), gauge height
Reading HENRYS FORK NR ISLAND PARK ID…
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USGS 13042500 · Idaho · reports discharge (live), gauge height
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.
Reading Nov 5, 9:45 PM MST · provisional USGS data
Below normal for Nov 5 Steady · 24 h
Discharge, last 7 days: 169 readings from Oct 29, 10:45 PM MDT to Nov 5, 9:45 PM MST; ranging 82.6 to 86 ft³/s; latest 82.6 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, 9:45 PM MST | 82.6 | 2.08 | 172–521 |
| Nov 5, 8:45 PM MST | 82.6 | 2.08 | 172–521 |
| Nov 5, 7:45 PM MST | 84.3 | 2.09 | 172–521 |
| Nov 5, 6:45 PM MST | 84.3 | 2.09 | 172–521 |
| Nov 5, 5:45 PM MST | 84.3 | 2.09 | 172–521 |
| Nov 5, 4:45 PM MST | 84.3 | 2.09 | 172–521 |
| Nov 5, 3:45 PM MST | 84.3 | 2.09 | 172–521 |
| Nov 5, 2:45 PM MST | 84.3 | 2.09 | 172–521 |
| Nov 5, 1:45 PM MST | 84.3 | 2.09 | 172–521 |
| Nov 5, 12:45 PM MST | 84.3 | 2.09 | 172–521 |
| Nov 5, 11:45 AM MST | 86 | 2.1 | 172–521 |
| Nov 5, 10:45 AM MST | 84.3 | 2.09 | 172–521 |
| Nov 5, 9:45 AM MST | 84.3 | 2.09 | 172–521 |
| Nov 5, 8:45 AM MST | 84.3 | 2.09 | 172–521 |
| Nov 5, 7:45 AM MST | 84.3 | 2.09 | 172–521 |
| Nov 5, 6:45 AM MST | 84.3 | 2.09 | 172–521 |
| Nov 5, 5:45 AM MST | 84.3 | 2.09 | 172–521 |
| Nov 5, 4:45 AM MST | 84.3 | 2.09 | 172–521 |
| Nov 5, 3:45 AM MST | 84.3 | 2.09 | 172–521 |
| Nov 5, 2:45 AM MST | 84.3 | 2.09 | 172–521 |
| Nov 5, 1:45 AM MST | 84.3 | 2.09 | 172–521 |
| Nov 5, 12:45 AM MST | 84.3 | 2.09 | 172–521 |
| Nov 4, 11:45 PM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 10:45 PM MST | 86 | 2.1 | 166–521 |
| Nov 4, 9:45 PM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 8:45 PM MST | 86 | 2.1 | 166–521 |
| Nov 4, 7:45 PM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 6:45 PM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 5:45 PM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 4:45 PM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 3:45 PM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 2:45 PM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 1:45 PM MST | 82.6 | 2.08 | 166–521 |
| Nov 4, 12:45 PM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 11:45 AM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 10:45 AM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 9:45 AM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 8:45 AM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 7:45 AM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 6:45 AM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 5:45 AM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 4:45 AM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 3:45 AM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 2:45 AM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 1:45 AM MST | 84.3 | 2.09 | 166–521 |
| Nov 4, 12:45 AM MST | 82.6 | 2.08 | 166–521 |
| Nov 3, 11:45 PM MST | 82.6 | 2.08 | 169–521 |
| Nov 3, 10:45 PM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 9:45 PM MST | 82.6 | 2.08 | 169–521 |
| Nov 3, 8:45 PM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 7:45 PM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 6:45 PM MST | 86 | 2.1 | 169–521 |
| Nov 3, 5:45 PM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 4:45 PM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 3:45 PM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 2:45 PM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 1:45 PM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 12:45 PM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 11:45 AM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 10:45 AM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 9:45 AM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 8:45 AM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 7:45 AM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 6:45 AM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 5:45 AM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 4:45 AM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 3:45 AM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 2:45 AM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 1:45 AM MST | 84.3 | 2.09 | 169–521 |
| Nov 3, 12:45 AM MST | 84.3 | 2.09 | 169–521 |
| Nov 2, 11:45 PM MST | 84.3 | 2.09 | 167–530 |
| Nov 2, 10:45 PM MST | 84.3 | 2.09 | 167–530 |
| Nov 2, 9:45 PM MST | 82.6 | 2.08 | 167–530 |
| Nov 2, 8:45 PM MST | 84.3 | 2.09 | 167–530 |
| Nov 2, 7:45 PM MST | 84.3 | 2.09 | 167–530 |
| Nov 2, 6:45 PM MST | 86 | 2.1 | 167–530 |
| Nov 2, 5:45 PM MST | 86 | 2.1 | 167–530 |
| Nov 2, 4:45 PM MST | 84.3 | 2.09 | 167–530 |
| Nov 2, 3:45 PM MST | 84.3 | 2.09 | 167–530 |
| Nov 2, 2:45 PM MST | 86 | 2.1 | 167–530 |
| Nov 2, 1:45 PM MST | 84.3 | 2.09 | 167–530 |
| Nov 2, 12:45 PM MST | 84.3 | 2.09 | 167–530 |
| Nov 2, 11:45 AM MST | 86 | 2.1 | 167–530 |
| Nov 2, 10:45 AM MST | 84.3 | 2.09 | 167–530 |
| Nov 2, 9:45 AM MST | 84.3 | 2.09 | 167–530 |
| Nov 2, 8:45 AM MST | 86 | 2.1 | 167–530 |
| Nov 2, 7:45 AM MST | 86 | 2.1 | 167–530 |
| Nov 2, 6:45 AM MST | 84.3 | 2.09 | 167–530 |
| Nov 2, 5:45 AM MST | 84.3 | 2.09 | 167–530 |
| Nov 2, 4:45 AM MST | 84.3 | 2.09 | 167–530 |
| Nov 2, 3:45 AM MST | 84.3 | 2.09 | 167–530 |
| Nov 2, 2:45 AM MST | 84.3 | 2.09 | 167–530 |
| Nov 2, 1:45 AM MST | 84.3 | 2.09 | 167–530 |
| Nov 2, 12:45 AM MST | 84.3 | 2.09 | 167–530 |
| Nov 1, 11:45 PM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 10:45 PM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 9:45 PM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 8:45 PM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 7:45 PM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 6:45 PM MST | 86 | 2.1 | 173–527 |
| Nov 1, 5:45 PM MST | 86 | 2.1 | 173–527 |
| Nov 1, 4:45 PM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 3:45 PM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 2:45 PM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 1:45 PM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 12:45 PM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 11:45 AM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 10:45 AM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 9:45 AM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 8:45 AM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 7:45 AM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 6:45 AM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 5:45 AM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 4:45 AM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 3:45 AM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 2:45 AM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 1:45 AM MST | 84.3 | 2.09 | 173–527 |
| Nov 1, 1:45 AM MDT | 84.3 | 2.09 | 173–527 |
| Nov 1, 12:45 AM MDT | 84.3 | 2.09 | 173–527 |
| Oct 31, 11:45 PM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 10:45 PM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 9:45 PM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 8:45 PM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 7:45 PM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 6:45 PM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 5:45 PM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 4:45 PM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 3:45 PM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 2:45 PM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 1:45 PM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 12:45 PM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 11:45 AM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 10:45 AM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 9:45 AM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 8:45 AM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 7:45 AM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 6:45 AM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 5:45 AM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 4:45 AM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 3:45 AM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 2:45 AM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 1:45 AM MDT | 84.3 | 2.09 | 172–533 |
| Oct 31, 12:45 AM MDT | 82.6 | 2.08 | 172–533 |
| Oct 30, 11:45 PM MDT | 82.6 | 2.08 | 172–524 |
| Oct 30, 10:45 PM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 9:45 PM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 8:45 PM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 7:45 PM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 6:45 PM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 5:45 PM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 4:45 PM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 3:45 PM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 2:45 PM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 1:45 PM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 12:45 PM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 11:45 AM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 10:45 AM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 9:45 AM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 8:45 AM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 7:45 AM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 6:45 AM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 5:45 AM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 4:45 AM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 3:45 AM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 2:45 AM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 1:45 AM MDT | 84.3 | 2.09 | 172–524 |
| Oct 30, 12:45 AM MDT | 84.3 | 2.09 | 172–524 |
| Oct 29, 11:45 PM MDT | 84.3 | 2.09 | 173–525 |
| Oct 29, 10:45 PM MDT | 84.3 | 2.09 | 173–525 |
Map of USGS gauge 13042500 and the river around it
Where HENRYS FORK NR ISLAND PARK ID sits, with 2 other gauges on the same river and our water's map point.
No current water-temperature reading at this gauge, so no temperature guidance is given. Take a stream thermometer: the trout lines Idaho Fish and Game uses are 66°F and 73°F.
Species the agency lists for : Brown Trout, Cutthroat Trout, Brook Trout, Mountain Whitefish, Rainbow Trout, Cutbow - Cutthroat x Rainbow Trout.
Normal for Nov 5: 172–521 ft³/s (middle half of 93 years of record). Now: 82.6 ft³/s, below normal.
Below normal for this date. 82.6 ft³/s is between the 10th and 25th percentiles of daily mean flow for Nov 5 at this gauge over 93 years of record (1934–2026): 10th 72, 25th 172, median 340, 75th 521, 90th 605 ft³/s.
Daily means on record for Nov 5: lowest 1.4 ft³/s, highest 1,660 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% 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.
Source: Henrys Fork Snake River (Henrys Fork, North Fork Snake River) | Idaho Fishing Planner (Idaho Department of Fish and Game).
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.
NWS observed 2.08 ft stage, 83 ft³/s at Nov 5, 8:45 PM MST (NWS gauge ISLI1; its stage datum can differ from the USGS gauge height).
NWS has not set flood categories for this gauge.
NWS river forecast forecast issued Nov 5, 8:13 AM MST. Highest point: 2.09 ft, 84 ft³/s on Nov 5, 11:00 AM MST.
| Day | Stage | Flow |
|---|---|---|
| Thu, Nov 5 | 2.09 ft | 84 ft³/s |
| Fri, Nov 6 | 2.09 ft | 84 ft³/s |
| Sat, Nov 7 | 2.09 ft | 84 ft³/s |
| Sun, Nov 8 | 2.09 ft | 84 ft³/s |
| Mon, Nov 9 | 2.09 ft | 84 ft³/s |
| Tue, Nov 10 | 2.09 ft | 84 ft³/s |
| Wed, Nov 11 | 2.09 ft | 84 ft³/s |
| Thu, Nov 12 | 2.09 ft | 84 ft³/s |
| Fri, Nov 13 | 2.09 ft | 84 ft³/s |
| Sat, Nov 14 | 2.09 ft | 84 ft³/s |
Open the NWS gauge page · What the categories mean (National Weather Service)
Checked Nov 5, 10:03 PM MST; 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.