NF BIG LOST RIVER AT WILD HORSE NR CHILLY ID
USGS 13120000 · Idaho · reports discharge (live), gauge height
Reading NF BIG LOST RIVER AT WILD HORSE NR CHILLY ID…
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USGS 13120000 · 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, 10:15 PM MST · provisional USGS data
Normal for Nov 5 Steady · 24 h Below NWS action stage
Discharge, last 7 days: 169 readings from Oct 29, 11:15 PM MDT to Nov 5, 10:15 PM MST; ranging 30.4 to 34.8 ft³/s; latest 31 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, 10:15 PM MST | 31 | 1.54 | 27–37 |
| Nov 5, 9:15 PM MST | 31 | 1.54 | 27–37 |
| Nov 5, 8:15 PM MST | 31.6 | 1.55 | 27–37 |
| Nov 5, 7:15 PM MST | 32.2 | 1.56 | 27–37 |
| Nov 5, 6:15 PM MST | 32.2 | 1.56 | 27–37 |
| Nov 5, 5:15 PM MST | 32.9 | 1.57 | 27–37 |
| Nov 5, 4:15 PM MST | 32.2 | 1.56 | 27–37 |
| Nov 5, 3:15 PM MST | 32.2 | 1.56 | 27–37 |
| Nov 5, 2:15 PM MST | 32.2 | 1.56 | 27–37 |
| Nov 5, 1:15 PM MST | 32.9 | 1.57 | 27–37 |
| Nov 5, 12:15 PM MST | 32.2 | 1.56 | 27–37 |
| Nov 5, 11:15 AM MST | 31.6 | 1.55 | 27–37 |
| Nov 5, 10:15 AM MST | 31.6 | 1.55 | 27–37 |
| Nov 5, 9:15 AM MST | 31 | 1.54 | 27–37 |
| Nov 5, 8:15 AM MST | 31.6 | 1.55 | 27–37 |
| Nov 5, 7:15 AM MST | 31.6 | 1.55 | 27–37 |
| Nov 5, 6:15 AM MST | 31 | 1.54 | 27–37 |
| Nov 5, 5:15 AM MST | 31.6 | 1.55 | 27–37 |
| Nov 5, 4:15 AM MST | 31.6 | 1.55 | 27–37 |
| Nov 5, 3:15 AM MST | 31.6 | 1.55 | 27–37 |
| Nov 5, 2:15 AM MST | 31.6 | 1.55 | 27–37 |
| Nov 5, 1:15 AM MST | 31.6 | 1.55 | 27–37 |
| Nov 5, 12:15 AM MST | 31.6 | 1.55 | 27–37 |
| Nov 4, 11:15 PM MST | 31.6 | 1.55 | 27–39 |
| Nov 4, 10:15 PM MST | 31.6 | 1.55 | 27–39 |
| Nov 4, 9:15 PM MST | 31.6 | 1.55 | 27–39 |
| Nov 4, 8:15 PM MST | 31.6 | 1.55 | 27–39 |
| Nov 4, 7:15 PM MST | 32.2 | 1.56 | 27–39 |
| Nov 4, 6:15 PM MST | 32.9 | 1.57 | 27–39 |
| Nov 4, 5:15 PM MST | 33.5 | 1.58 | 27–39 |
| Nov 4, 4:15 PM MST | 34.2 | 1.59 | 27–39 |
| Nov 4, 3:15 PM MST | 33.5 | 1.58 | 27–39 |
| Nov 4, 2:15 PM MST | 33.5 | 1.58 | 27–39 |
| Nov 4, 1:15 PM MST | 33.5 | 1.58 | 27–39 |
| Nov 4, 12:15 PM MST | 32.9 | 1.57 | 27–39 |
| Nov 4, 11:15 AM MST | 32.9 | 1.57 | 27–39 |
| Nov 4, 10:15 AM MST | 32.2 | 1.56 | 27–39 |
| Nov 4, 9:15 AM MST | 32.2 | 1.56 | 27–39 |
| Nov 4, 8:15 AM MST | 32.2 | 1.56 | 27–39 |
| Nov 4, 7:15 AM MST | 32.2 | 1.56 | 27–39 |
| Nov 4, 6:15 AM MST | 32.2 | 1.56 | 27–39 |
| Nov 4, 5:15 AM MST | 32.2 | 1.56 | 27–39 |
| Nov 4, 4:15 AM MST | 32.2 | 1.56 | 27–39 |
| Nov 4, 3:15 AM MST | 32.2 | 1.56 | 27–39 |
| Nov 4, 2:15 AM MST | 32.2 | 1.56 | 27–39 |
| Nov 4, 1:15 AM MST | 31.6 | 1.55 | 27–39 |
| Nov 4, 12:15 AM MST | 31.6 | 1.55 | 27–39 |
| Nov 3, 11:15 PM MST | 31.6 | 1.55 | 26–38 |
| Nov 3, 10:15 PM MST | 31.6 | 1.55 | 26–38 |
| Nov 3, 9:15 PM MST | 31.6 | 1.55 | 26–38 |
| Nov 3, 8:15 PM MST | 32.2 | 1.56 | 26–38 |
| Nov 3, 7:15 PM MST | 32.2 | 1.56 | 26–38 |
| Nov 3, 6:15 PM MST | 32.2 | 1.56 | 26–38 |
| Nov 3, 5:15 PM MST | 32.9 | 1.57 | 26–38 |
| Nov 3, 4:15 PM MST | 32.9 | 1.57 | 26–38 |
| Nov 3, 3:15 PM MST | 32.9 | 1.57 | 26–38 |
| Nov 3, 2:15 PM MST | 32.9 | 1.57 | 26–38 |
| Nov 3, 1:15 PM MST | 32.9 | 1.57 | 26–38 |
| Nov 3, 12:15 PM MST | 32.2 | 1.56 | 26–38 |
| Nov 3, 11:15 AM MST | 32.2 | 1.56 | 26–38 |
| Nov 3, 10:15 AM MST | 32.2 | 1.56 | 26–38 |
| Nov 3, 9:15 AM MST | 32.2 | 1.56 | 26–38 |
| Nov 3, 8:15 AM MST | 32.2 | 1.56 | 26–38 |
| Nov 3, 7:15 AM MST | 31.6 | 1.55 | 26–38 |
| Nov 3, 6:15 AM MST | 32.2 | 1.56 | 26–38 |
| Nov 3, 5:15 AM MST | 32.2 | 1.56 | 26–38 |
| Nov 3, 4:15 AM MST | 32.2 | 1.56 | 26–38 |
| Nov 3, 3:15 AM MST | 32.2 | 1.56 | 26–38 |
| Nov 3, 2:15 AM MST | 32.2 | 1.56 | 26–38 |
| Nov 3, 1:15 AM MST | 32.2 | 1.56 | 26–38 |
| Nov 3, 12:15 AM MST | 32.2 | 1.56 | 26–38 |
| Nov 2, 11:15 PM MST | 32.2 | 1.56 | 25–38 |
| Nov 2, 10:15 PM MST | 32.2 | 1.56 | 25–38 |
| Nov 2, 9:15 PM MST | 32.9 | 1.57 | 25–38 |
| Nov 2, 8:15 PM MST | 32.9 | 1.57 | 25–38 |
| Nov 2, 7:15 PM MST | 32.9 | 1.57 | 25–38 |
| Nov 2, 6:15 PM MST | 33.5 | 1.58 | 25–38 |
| Nov 2, 5:15 PM MST | 34.2 | 1.59 | 25–38 |
| Nov 2, 4:15 PM MST | 34.2 | 1.59 | 25–38 |
| Nov 2, 3:15 PM MST | 34.8 | 1.6 | 25–38 |
| Nov 2, 2:15 PM MST | 34.2 | 1.59 | 25–38 |
| Nov 2, 1:15 PM MST | 34.8 | 1.6 | 25–38 |
| Nov 2, 12:15 PM MST | 34.2 | 1.59 | 25–38 |
| Nov 2, 11:15 AM MST | 34.2 | 1.59 | 25–38 |
| Nov 2, 10:15 AM MST | 34.2 | 1.59 | 25–38 |
| Nov 2, 9:15 AM MST | 33.5 | 1.58 | 25–38 |
| Nov 2, 8:15 AM MST | 34.2 | 1.59 | 25–38 |
| Nov 2, 7:15 AM MST | 33.5 | 1.58 | 25–38 |
| Nov 2, 6:15 AM MST | 34.2 | 1.59 | 25–38 |
| Nov 2, 5:15 AM MST | 34.2 | 1.59 | 25–38 |
| Nov 2, 4:15 AM MST | 34.2 | 1.59 | 25–38 |
| Nov 2, 3:15 AM MST | 34.2 | 1.59 | 25–38 |
| Nov 2, 2:15 AM MST | 34.2 | 1.59 | 25–38 |
| Nov 2, 1:15 AM MST | 34.2 | 1.59 | 25–38 |
| Nov 2, 12:15 AM MST | 34.2 | 1.59 | 25–38 |
| Nov 1, 11:15 PM MST | 34.2 | 1.59 | 27–39 |
| Nov 1, 10:15 PM MST | 34.8 | 1.6 | 27–39 |
| Nov 1, 9:15 PM MST | 34.8 | 1.6 | 27–39 |
| Nov 1, 8:15 PM MST | 34.2 | 1.59 | 27–39 |
| Nov 1, 7:15 PM MST | 34.2 | 1.59 | 27–39 |
| Nov 1, 6:15 PM MST | 34.2 | 1.59 | 27–39 |
| Nov 1, 5:15 PM MST | 34.2 | 1.59 | 27–39 |
| Nov 1, 4:15 PM MST | 34.2 | 1.59 | 27–39 |
| Nov 1, 3:15 PM MST | 34.2 | 1.59 | 27–39 |
| Nov 1, 2:15 PM MST | 34.2 | 1.59 | 27–39 |
| Nov 1, 1:15 PM MST | 34.2 | 1.59 | 27–39 |
| Nov 1, 12:15 PM MST | 34.2 | 1.59 | 27–39 |
| Nov 1, 11:15 AM MST | 33.5 | 1.58 | 27–39 |
| Nov 1, 10:15 AM MST | 33.5 | 1.58 | 27–39 |
| Nov 1, 9:15 AM MST | 33.5 | 1.58 | 27–39 |
| Nov 1, 8:15 AM MST | 33.5 | 1.58 | 27–39 |
| Nov 1, 7:15 AM MST | 33.5 | 1.58 | 27–39 |
| Nov 1, 6:15 AM MST | 34.2 | 1.59 | 27–39 |
| Nov 1, 5:15 AM MST | 33.5 | 1.58 | 27–39 |
| Nov 1, 4:15 AM MST | 34.2 | 1.59 | 27–39 |
| Nov 1, 3:15 AM MST | 34.2 | 1.59 | 27–39 |
| Nov 1, 2:15 AM MST | 34.2 | 1.59 | 27–39 |
| Nov 1, 1:15 AM MST | 34.2 | 1.59 | 27–39 |
| Nov 1, 1:15 AM MDT | 33.5 | 1.58 | 27–39 |
| Nov 1, 12:15 AM MDT | 33.5 | 1.58 | 27–39 |
| Oct 31, 11:15 PM MDT | 32.9 | 1.57 | 27–38 |
| Oct 31, 10:15 PM MDT | 32.9 | 1.57 | 27–38 |
| Oct 31, 9:15 PM MDT | 32.2 | 1.56 | 27–38 |
| Oct 31, 8:15 PM MDT | 32.2 | 1.56 | 27–38 |
| Oct 31, 7:15 PM MDT | 32.2 | 1.56 | 27–38 |
| Oct 31, 6:15 PM MDT | 32.2 | 1.56 | 27–38 |
| Oct 31, 5:15 PM MDT | 32.9 | 1.57 | 27–38 |
| Oct 31, 4:15 PM MDT | 32.9 | 1.57 | 27–38 |
| Oct 31, 3:15 PM MDT | 32.9 | 1.57 | 27–38 |
| Oct 31, 2:15 PM MDT | 32.9 | 1.57 | 27–38 |
| Oct 31, 1:15 PM MDT | 32.9 | 1.57 | 27–38 |
| Oct 31, 12:15 PM MDT | 32.9 | 1.57 | 27–38 |
| Oct 31, 11:15 AM MDT | 32.2 | 1.56 | 27–38 |
| Oct 31, 10:15 AM MDT | 32.2 | 1.56 | 27–38 |
| Oct 31, 9:15 AM MDT | 32.2 | 1.56 | 27–38 |
| Oct 31, 8:15 AM MDT | 31.6 | 1.55 | 27–38 |
| Oct 31, 7:15 AM MDT | 31.6 | 1.55 | 27–38 |
| Oct 31, 6:15 AM MDT | 32.2 | 1.56 | 27–38 |
| Oct 31, 5:15 AM MDT | 32.2 | 1.56 | 27–38 |
| Oct 31, 4:15 AM MDT | 31.6 | 1.55 | 27–38 |
| Oct 31, 3:15 AM MDT | 31.6 | 1.55 | 27–38 |
| Oct 31, 2:15 AM MDT | 31.6 | 1.55 | 27–38 |
| Oct 31, 1:15 AM MDT | 32.2 | 1.56 | 27–38 |
| Oct 31, 12:15 AM MDT | 31.6 | 1.55 | 27–38 |
| Oct 30, 11:15 PM MDT | 32.2 | 1.56 | 27–39 |
| Oct 30, 10:15 PM MDT | 32.2 | 1.56 | 27–39 |
| Oct 30, 9:15 PM MDT | 32.2 | 1.56 | 27–39 |
| Oct 30, 8:15 PM MDT | 32.2 | 1.56 | 27–39 |
| Oct 30, 7:15 PM MDT | 32.2 | 1.56 | 27–39 |
| Oct 30, 6:15 PM MDT | 32.2 | 1.56 | 27–39 |
| Oct 30, 5:15 PM MDT | 32.9 | 1.57 | 27–39 |
| Oct 30, 4:15 PM MDT | 32.9 | 1.57 | 27–39 |
| Oct 30, 3:15 PM MDT | 32.9 | 1.57 | 27–39 |
| Oct 30, 2:15 PM MDT | 32.2 | 1.56 | 27–39 |
| Oct 30, 1:15 PM MDT | 32.2 | 1.56 | 27–39 |
| Oct 30, 12:15 PM MDT | 31.6 | 1.55 | 27–39 |
| Oct 30, 11:15 AM MDT | 31.6 | 1.55 | 27–39 |
| Oct 30, 10:15 AM MDT | 31.6 | 1.55 | 27–39 |
| Oct 30, 9:15 AM MDT | 31 | 1.54 | 27–39 |
| Oct 30, 8:15 AM MDT | 31 | 1.54 | 27–39 |
| Oct 30, 7:15 AM MDT | 31 | 1.54 | 27–39 |
| Oct 30, 6:15 AM MDT | 31 | 1.54 | 27–39 |
| Oct 30, 5:15 AM MDT | 31 | 1.54 | 27–39 |
| Oct 30, 4:15 AM MDT | 31 | 1.54 | 27–39 |
| Oct 30, 3:15 AM MDT | 31 | 1.54 | 27–39 |
| Oct 30, 2:15 AM MDT | 30.4 | 1.53 | 27–39 |
| Oct 30, 1:15 AM MDT | 30.4 | 1.53 | 27–39 |
| Oct 30, 12:15 AM MDT | 30.4 | 1.53 | 27–39 |
| Oct 29, 11:15 PM MDT | 30.4 | 1.53 | 28–40 |
Map of USGS gauge 13120000 and the river around it
Where NF BIG LOST RIVER AT WILD HORSE NR CHILLY 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 Lost River: Brook Trout, Rainbow Trout.
From our page for North Fork Big Lost 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: 27–37 ft³/s (middle half of 82 years of record). Now: 31 ft³/s, normal.
Normal for this date. 31 ft³/s is between the 25th and 75th percentiles of daily mean flow for Nov 5 at this gauge over 82 years of record (1945–2026): 10th 22, 25th 27, median 31, 75th 37, 90th 44 ft³/s.
Daily means on record for Nov 5: lowest 14 ft³/s, highest 121 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 (−1.9% 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 1.56 ft stage, 32 ft³/s at Nov 5, 7:15 PM MST (NWS gauge BLRI1; 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, 10:48 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.