NF BIG WOOD RIVER NR SAWTOOTH NRA HQ NR KETCHUM ID
USGS 13135520 · Idaho · reports discharge (live), gauge height
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USGS 13135520 · 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, 8:30 PM MST · provisional USGS data
Above normal for Nov 5 Steady · 24 h Below NWS action stage
Discharge, last 7 days: 169 readings from Oct 29, 9:30 PM MDT to Nov 5, 8:30 PM MST; ranging 23.7 to 28.8 ft³/s; latest 24.4 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, 8:30 PM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 7:30 PM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 6:30 PM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 5:30 PM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 4:30 PM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 3:30 PM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 2:30 PM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 1:30 PM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 12:30 PM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 11:30 AM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 10:30 AM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 9:30 AM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 8:30 AM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 7:30 AM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 6:30 AM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 5:30 AM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 4:30 AM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 3:30 AM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 2:30 AM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 1:30 AM MST | 24.4 | 4.99 | 18–24 |
| Nov 5, 12:30 AM MST | 24.4 | 4.99 | 18–24 |
| Nov 4, 11:30 PM MST | 24.4 | 4.99 | 17–23 |
| Nov 4, 10:30 PM MST | 24.4 | 4.99 | 17–23 |
| Nov 4, 9:30 PM MST | 24.4 | 4.99 | 17–23 |
| Nov 4, 8:30 PM MST | 24.4 | 4.99 | 17–23 |
| Nov 4, 7:30 PM MST | 24.4 | 4.99 | 17–23 |
| Nov 4, 6:30 PM MST | 24.4 | 4.99 | 17–23 |
| Nov 4, 5:30 PM MST | 24.4 | 4.99 | 17–23 |
| Nov 4, 4:30 PM MST | 24.4 | 4.99 | 17–23 |
| Nov 4, 3:30 PM MST | 24.4 | 4.99 | 17–23 |
| Nov 4, 2:30 PM MST | 24.4 | 4.99 | 17–23 |
| Nov 4, 1:30 PM MST | 24.4 | 4.99 | 17–23 |
| Nov 4, 12:30 PM MST | 24.4 | 4.99 | 17–23 |
| Nov 4, 11:30 AM MST | 24.4 | 4.99 | 17–23 |
| Nov 4, 10:30 AM MST | 24.4 | 4.99 | 17–23 |
| Nov 4, 9:30 AM MST | 24.4 | 4.99 | 17–23 |
| Nov 4, 8:30 AM MST | 25.1 | 5 | 17–23 |
| Nov 4, 7:30 AM MST | 25.1 | 5 | 17–23 |
| Nov 4, 6:30 AM MST | 25.1 | 5 | 17–23 |
| Nov 4, 5:30 AM MST | 25.1 | 5 | 17–23 |
| Nov 4, 4:30 AM MST | 25.1 | 5 | 17–23 |
| Nov 4, 3:30 AM MST | 25.1 | 5 | 17–23 |
| Nov 4, 2:30 AM MST | 25.1 | 5 | 17–23 |
| Nov 4, 1:30 AM MST | 25.1 | 5 | 17–23 |
| Nov 4, 12:30 AM MST | 25.1 | 5 | 17–23 |
| Nov 3, 11:30 PM MST | 25.1 | 5 | 17–24 |
| Nov 3, 10:30 PM MST | 25.1 | 5 | 17–24 |
| Nov 3, 9:30 PM MST | 25.1 | 5 | 17–24 |
| Nov 3, 8:30 PM MST | 25.1 | 5 | 17–24 |
| Nov 3, 7:30 PM MST | 25.1 | 5 | 17–24 |
| Nov 3, 6:30 PM MST | 25.1 | 5 | 17–24 |
| Nov 3, 5:30 PM MST | 25.1 | 5 | 17–24 |
| Nov 3, 4:30 PM MST | 24.4 | 4.99 | 17–24 |
| Nov 3, 3:30 PM MST | 24.4 | 4.99 | 17–24 |
| Nov 3, 2:30 PM MST | 25.1 | 5 | 17–24 |
| Nov 3, 1:30 PM MST | 25.1 | 5 | 17–24 |
| Nov 3, 12:30 PM MST | 25.1 | 5 | 17–24 |
| Nov 3, 11:30 AM MST | 25.1 | 5 | 17–24 |
| Nov 3, 10:30 AM MST | 25.1 | 5 | 17–24 |
| Nov 3, 9:30 AM MST | 25.1 | 5 | 17–24 |
| Nov 3, 8:30 AM MST | 25.1 | 5 | 17–24 |
| Nov 3, 7:30 AM MST | 25.1 | 5 | 17–24 |
| Nov 3, 6:30 AM MST | 25.1 | 5 | 17–24 |
| Nov 3, 5:30 AM MST | 25.9 | 5.01 | 17–24 |
| Nov 3, 4:30 AM MST | 25.9 | 5.01 | 17–24 |
| Nov 3, 3:30 AM MST | 25.9 | 5.01 | 17–24 |
| Nov 3, 2:30 AM MST | 25.9 | 5.01 | 17–24 |
| Nov 3, 1:30 AM MST | 25.9 | 5.01 | 17–24 |
| Nov 3, 12:30 AM MST | 25.9 | 5.01 | 17–24 |
| Nov 2, 11:30 PM MST | 25.9 | 5.01 | 18–24 |
| Nov 2, 10:30 PM MST | 25.9 | 5.01 | 18–24 |
| Nov 2, 9:30 PM MST | 25.9 | 5.01 | 18–24 |
| Nov 2, 8:30 PM MST | 25.9 | 5.01 | 18–24 |
| Nov 2, 7:30 PM MST | 25.9 | 5.01 | 18–24 |
| Nov 2, 6:30 PM MST | 25.9 | 5.01 | 18–24 |
| Nov 2, 5:30 PM MST | 25.9 | 5.01 | 18–24 |
| Nov 2, 4:30 PM MST | 25.9 | 5.01 | 18–24 |
| Nov 2, 3:30 PM MST | 25.9 | 5.01 | 18–24 |
| Nov 2, 2:30 PM MST | 25.9 | 5.01 | 18–24 |
| Nov 2, 1:30 PM MST | 25.9 | 5.01 | 18–24 |
| Nov 2, 12:30 PM MST | 26.6 | 5.02 | 18–24 |
| Nov 2, 11:30 AM MST | 26.6 | 5.02 | 18–24 |
| Nov 2, 10:30 AM MST | 26.6 | 5.02 | 18–24 |
| Nov 2, 9:30 AM MST | 26.6 | 5.02 | 18–24 |
| Nov 2, 8:30 AM MST | 26.6 | 5.02 | 18–24 |
| Nov 2, 7:30 AM MST | 27.3 | 5.03 | 18–24 |
| Nov 2, 6:30 AM MST | 27.3 | 5.03 | 18–24 |
| Nov 2, 5:30 AM MST | 27.3 | 5.03 | 18–24 |
| Nov 2, 4:30 AM MST | 27.3 | 5.03 | 18–24 |
| Nov 2, 3:30 AM MST | 27.3 | 5.03 | 18–24 |
| Nov 2, 2:30 AM MST | 28.1 | 5.04 | 18–24 |
| Nov 2, 1:30 AM MST | 27.3 | 5.03 | 18–24 |
| Nov 2, 12:30 AM MST | 28.1 | 5.04 | 18–24 |
| Nov 1, 11:30 PM MST | 28.1 | 5.04 | 18–25 |
| Nov 1, 10:30 PM MST | 28.1 | 5.04 | 18–25 |
| Nov 1, 9:30 PM MST | 28.1 | 5.04 | 18–25 |
| Nov 1, 8:30 PM MST | 28.1 | 5.04 | 18–25 |
| Nov 1, 7:30 PM MST | 28.1 | 5.04 | 18–25 |
| Nov 1, 6:30 PM MST | 28.1 | 5.04 | 18–25 |
| Nov 1, 5:30 PM MST | 27.3 | 5.03 | 18–25 |
| Nov 1, 4:30 PM MST | 28.1 | 5.04 | 18–25 |
| Nov 1, 3:30 PM MST | 27.3 | 5.03 | 18–25 |
| Nov 1, 2:30 PM MST | 27.3 | 5.03 | 18–25 |
| Nov 1, 1:30 PM MST | 27.3 | 5.03 | 18–25 |
| Nov 1, 12:30 PM MST | 27.3 | 5.03 | 18–25 |
| Nov 1, 11:30 AM MST | 27.3 | 5.03 | 18–25 |
| Nov 1, 10:30 AM MST | 28.1 | 5.04 | 18–25 |
| Nov 1, 9:30 AM MST | 28.1 | 5.04 | 18–25 |
| Nov 1, 8:30 AM MST | 28.1 | 5.04 | 18–25 |
| Nov 1, 7:30 AM MST | 28.1 | 5.04 | 18–25 |
| Nov 1, 6:30 AM MST | 28.1 | 5.04 | 18–25 |
| Nov 1, 5:30 AM MST | 28.8 | 5.05 | 18–25 |
| Nov 1, 4:30 AM MST | 28.1 | 5.04 | 18–25 |
| Nov 1, 3:30 AM MST | 28.8 | 5.05 | 18–25 |
| Nov 1, 2:30 AM MST | 28.8 | 5.05 | 18–25 |
| Nov 1, 1:30 AM MST | 28.8 | 5.05 | 18–25 |
| Nov 1, 1:30 AM MDT | 28.8 | 5.05 | 18–25 |
| Nov 1, 12:30 AM MDT | 28.1 | 5.04 | 18–25 |
| Oct 31, 11:30 PM MDT | 26.6 | 5.02 | 18–26 |
| Oct 31, 10:30 PM MDT | 25.1 | 5 | 18–26 |
| Oct 31, 9:30 PM MDT | 24.4 | 4.99 | 18–26 |
| Oct 31, 8:30 PM MDT | 23.7 | 4.98 | 18–26 |
| Oct 31, 7:30 PM MDT | 23.7 | 4.98 | 18–26 |
| Oct 31, 6:30 PM MDT | 23.7 | 4.98 | 18–26 |
| Oct 31, 5:30 PM MDT | 23.7 | 4.98 | 18–26 |
| Oct 31, 4:30 PM MDT | 23.7 | 4.98 | 18–26 |
| Oct 31, 3:30 PM MDT | 23.7 | 4.98 | 18–26 |
| Oct 31, 2:30 PM MDT | 24.4 | 4.99 | 18–26 |
| Oct 31, 1:30 PM MDT | 24.4 | 4.99 | 18–26 |
| Oct 31, 12:30 PM MDT | 24.4 | 4.99 | 18–26 |
| Oct 31, 11:30 AM MDT | 24.4 | 4.99 | 18–26 |
| Oct 31, 10:30 AM MDT | 24.4 | 4.99 | 18–26 |
| Oct 31, 9:30 AM MDT | 24.4 | 4.99 | 18–26 |
| Oct 31, 8:30 AM MDT | 24.4 | 4.99 | 18–26 |
| Oct 31, 7:30 AM MDT | 24.4 | 4.99 | 18–26 |
| Oct 31, 6:30 AM MDT | 24.4 | 4.99 | 18–26 |
| Oct 31, 5:30 AM MDT | 24.4 | 4.99 | 18–26 |
| Oct 31, 4:30 AM MDT | 24.4 | 4.99 | 18–26 |
| Oct 31, 3:30 AM MDT | 24.4 | 4.99 | 18–26 |
| Oct 31, 2:30 AM MDT | 24.4 | 4.99 | 18–26 |
| Oct 31, 1:30 AM MDT | 24.4 | 4.99 | 18–26 |
| Oct 31, 12:30 AM MDT | 25.1 | 5 | 18–26 |
| Oct 30, 11:30 PM MDT | 24.4 | 4.99 | 18–26 |
| Oct 30, 10:30 PM MDT | 24.4 | 4.99 | 18–26 |
| Oct 30, 9:30 PM MDT | 24.4 | 4.99 | 18–26 |
| Oct 30, 8:30 PM MDT | 25.1 | 5 | 18–26 |
| Oct 30, 7:30 PM MDT | 25.1 | 5 | 18–26 |
| Oct 30, 6:30 PM MDT | 25.1 | 5 | 18–26 |
| Oct 30, 5:30 PM MDT | 25.1 | 5 | 18–26 |
| Oct 30, 4:30 PM MDT | 25.1 | 5 | 18–26 |
| Oct 30, 3:30 PM MDT | 25.1 | 5 | 18–26 |
| Oct 30, 2:30 PM MDT | 25.1 | 5 | 18–26 |
| Oct 30, 1:30 PM MDT | 24.4 | 4.99 | 18–26 |
| Oct 30, 12:30 PM MDT | 23.7 | 4.98 | 18–26 |
| Oct 30, 11:30 AM MDT | 24.4 | 4.99 | 18–26 |
| Oct 30, 10:30 AM MDT | 23.7 | 4.98 | 18–26 |
| Oct 30, 9:30 AM MDT | 23.7 | 4.98 | 18–26 |
| Oct 30, 8:30 AM MDT | 23.7 | 4.98 | 18–26 |
| Oct 30, 7:30 AM MDT | 23.7 | 4.98 | 18–26 |
| Oct 30, 6:30 AM MDT | 23.7 | 4.98 | 18–26 |
| Oct 30, 5:30 AM MDT | 23.7 | 4.98 | 18–26 |
| Oct 30, 4:30 AM MDT | 23.7 | 4.98 | 18–26 |
| Oct 30, 3:30 AM MDT | 23.7 | 4.98 | 18–26 |
| Oct 30, 2:30 AM MDT | 23.7 | 4.98 | 18–26 |
| Oct 30, 1:30 AM MDT | 23.7 | 4.98 | 18–26 |
| Oct 30, 12:30 AM MDT | 24.4 | 4.99 | 18–26 |
| Oct 29, 11:30 PM MDT | 23.7 | 4.98 | 18–26 |
| Oct 29, 10:30 PM MDT | 24.4 | 4.99 | 18–26 |
| Oct 29, 9:30 PM MDT | 24.4 | 4.99 | 18–26 |
Map of USGS gauge 13135520 and the river around it
Where NF BIG WOOD RIVER NR SAWTOOTH NRA HQ NR KETCHUM ID sits 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 North Fork Big Wood River: Brook Trout, Mountain Whitefish, Rainbow Trout.
From our page for North Fork Big Wood 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).
Normal for Nov 5: 18–24 ft³/s (middle half of 15 years of record). Now: 24.4 ft³/s, above normal.
Above normal for this date. 24.4 ft³/s is between the 75th and 90th percentiles of daily mean flow for Nov 5 at this gauge over 15 years of record (2012–2026): 10th 16, 25th 18, median 20, 75th 24, 90th 35 ft³/s.
Daily means on record for Nov 5: lowest 15.8 ft³/s, highest 44.1 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 (+0% 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.
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 4.99 ft stage, 24 ft³/s at Nov 5, 7:30 PM MST (NWS gauge NFBI1; its stage datum can differ from the USGS gauge height).
Forecasts are not available. Only observed stages are available for this point.
Open the NWS gauge page · What the categories mean (National Weather Service)
Checked Nov 5, 9:00 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.