Tongue River at State Line nr Decker MT
USGS 06306300 · Montana · reports discharge (live), gauge height, water temperature, specific conductance
Reading Tongue River at State Line nr Decker MT…
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USGS 06306300 · Montana · reports discharge (live), gauge height, water temperature, specific conductance
What the agencies suggest
Approach the stream carefully and with a low profileIowa Department of Natural Resources
Fishing upstream will usually spook fewer fish than working downstreamIowa Department of Natural Resources
Deep pools and undercut banks provide refuge during sunny days and low waterMinnesota Department of Natural Resources
General guidance from the readings and the published lines named above, not a fishing forecast. Local rules and closures come first.
Reading Nov 5, 5:15 PM MST · provisional USGS data
Much below normal for Nov 5 Steady · 24 h
Discharge, last 7 days: 169 readings from Oct 29, 6:15 PM MDT to Nov 5, 5:15 PM MST; ranging 111 to 142 ft³/s; latest 137 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) | Water temp (°F) | Normal, 25th–75th (ft³/s) |
|---|---|---|---|---|
| Nov 5, 5:15 PM MST | 137 | 2.39 | 43.3 | 190–263 |
| Nov 5, 4:15 PM MST | 134 | 2.38 | 43.3 | 190–263 |
| Nov 5, 3:15 PM MST | 134 | 2.38 | 43 | 190–263 |
| Nov 5, 2:15 PM MST | 134 | 2.38 | 42.4 | 190–263 |
| Nov 5, 1:15 PM MST | 134 | 2.38 | 41.5 | 190–263 |
| Nov 5, 12:15 PM MST | 134 | 2.38 | 40.3 | 190–263 |
| Nov 5, 11:15 AM MST | 134 | 2.38 | 39.2 | 190–263 |
| Nov 5, 10:15 AM MST | 134 | 2.38 | 38.5 | 190–263 |
| Nov 5, 9:15 AM MST | 132 | 2.37 | 37.9 | 190–263 |
| Nov 5, 8:15 AM MST | 132 | 2.37 | 37.9 | 190–263 |
| Nov 5, 7:15 AM MST | 132 | 2.37 | 38.1 | 190–263 |
| Nov 5, 6:15 AM MST | 132 | 2.37 | 38.5 | 190–263 |
| Nov 5, 5:15 AM MST | 132 | 2.37 | 38.8 | 190–263 |
| Nov 5, 4:15 AM MST | 132 | 2.37 | 39.4 | 190–263 |
| Nov 5, 3:15 AM MST | 134 | 2.38 | 39.9 | 190–263 |
| Nov 5, 2:15 AM MST | 137 | 2.39 | 40.3 | 190–263 |
| Nov 5, 1:15 AM MST | 137 | 2.39 | 40.6 | 190–263 |
| Nov 5, 12:15 AM MST | 137 | 2.39 | 41.2 | 190–263 |
| Nov 4, 11:15 PM MST | 139 | 2.4 | 41.7 | 197–259 |
| Nov 4, 10:15 PM MST | 139 | 2.4 | 42.3 | 197–259 |
| Nov 4, 9:15 PM MST | 139 | 2.4 | 42.6 | 197–259 |
| Nov 4, 8:15 PM MST | 139 | 2.4 | 43.2 | 197–259 |
| Nov 4, 7:15 PM MST | 139 | 2.4 | 43.3 | 197–259 |
| Nov 4, 6:15 PM MST | 139 | 2.4 | 43.5 | 197–259 |
| Nov 4, 5:15 PM MST | 139 | 2.4 | 43.9 | 197–259 |
| Nov 4, 4:15 PM MST | 139 | 2.4 | 43.9 | 197–259 |
| Nov 4, 3:15 PM MST | 139 | 2.4 | 43.9 | 197–259 |
| Nov 4, 2:15 PM MST | 139 | 2.4 | 43.5 | 197–259 |
| Nov 4, 1:15 PM MST | 139 | 2.4 | 42.4 | 197–259 |
| Nov 4, 12:15 PM MST | 139 | 2.4 | 41.4 | 197–259 |
| Nov 4, 11:15 AM MST | 139 | 2.4 | 40.5 | 197–259 |
| Nov 4, 10:15 AM MST | 142 | 2.41 | 39.6 | 197–259 |
| Nov 4, 9:15 AM MST | 142 | 2.41 | 38.8 | 197–259 |
| Nov 4, 8:15 AM MST | 142 | 2.41 | 38.7 | 197–259 |
| Nov 4, 7:15 AM MST | 142 | 2.41 | 38.8 | 197–259 |
| Nov 4, 6:15 AM MST | 142 | 2.41 | 39.2 | 197–259 |
| Nov 4, 5:15 AM MST | 142 | 2.41 | 39.7 | 197–259 |
| Nov 4, 4:15 AM MST | 142 | 2.41 | 40.1 | 197–259 |
| Nov 4, 3:15 AM MST | 142 | 2.41 | 40.6 | 197–259 |
| Nov 4, 2:15 AM MST | 142 | 2.41 | 41 | 197–259 |
| Nov 4, 1:15 AM MST | 142 | 2.41 | 41.4 | 197–259 |
| Nov 4, 12:15 AM MST | 142 | 2.41 | 41.9 | 197–259 |
| Nov 3, 11:15 PM MST | 142 | 2.41 | 42.4 | 193–265 |
| Nov 3, 10:15 PM MST | 142 | 2.41 | 43 | 193–265 |
| Nov 3, 9:15 PM MST | 142 | 2.41 | 43.5 | 193–265 |
| Nov 3, 8:15 PM MST | 139 | 2.4 | 44.1 | 193–265 |
| Nov 3, 7:15 PM MST | 139 | 2.4 | 44.6 | 193–265 |
| Nov 3, 6:15 PM MST | 137 | 2.39 | 45 | 193–265 |
| Nov 3, 5:15 PM MST | 137 | 2.39 | 45.1 | 193–265 |
| Nov 3, 4:15 PM MST | 137 | 2.39 | 45.5 | 193–265 |
| Nov 3, 3:15 PM MST | 137 | 2.39 | 45.5 | 193–265 |
| Nov 3, 2:15 PM MST | 137 | 2.39 | 45.1 | 193–265 |
| Nov 3, 1:15 PM MST | 137 | 2.39 | 44.2 | 193–265 |
| Nov 3, 12:15 PM MST | 134 | 2.38 | 43.3 | 193–265 |
| Nov 3, 11:15 AM MST | 134 | 2.38 | 42.3 | 193–265 |
| Nov 3, 10:15 AM MST | 134 | 2.38 | 41.4 | 193–265 |
| Nov 3, 9:15 AM MST | 134 | 2.38 | 40.6 | 193–265 |
| Nov 3, 8:15 AM MST | 134 | 2.38 | 40.3 | 193–265 |
| Nov 3, 7:15 AM MST | 134 | 2.38 | 40.5 | 193–265 |
| Nov 3, 6:15 AM MST | 134 | 2.38 | 40.8 | 193–265 |
| Nov 3, 5:15 AM MST | 134 | 2.38 | 41.2 | 193–265 |
| Nov 3, 4:15 AM MST | 134 | 2.38 | 41.5 | 193–265 |
| Nov 3, 3:15 AM MST | 134 | 2.38 | 41.9 | 193–265 |
| Nov 3, 2:15 AM MST | 134 | 2.38 | 42.3 | 193–265 |
| Nov 3, 1:15 AM MST | 134 | 2.38 | 42.4 | 193–265 |
| Nov 3, 12:15 AM MST | 134 | 2.38 | 42.8 | 193–265 |
| Nov 2, 11:15 PM MST | 134 | 2.38 | 42.8 | 194–277 |
| Nov 2, 10:15 PM MST | 134 | 2.38 | 42.8 | 194–277 |
| Nov 2, 9:15 PM MST | 134 | 2.38 | 43 | 194–277 |
| Nov 2, 8:15 PM MST | 134 | 2.38 | 43 | 194–277 |
| Nov 2, 7:15 PM MST | 134 | 2.38 | 43 | 194–277 |
| Nov 2, 6:15 PM MST | 134 | 2.38 | 43 | 194–277 |
| Nov 2, 5:15 PM MST | 134 | 2.38 | 43.2 | 194–277 |
| Nov 2, 4:15 PM MST | 134 | 2.38 | 43.2 | 194–277 |
| Nov 2, 3:15 PM MST | 134 | 2.38 | 43.2 | 194–277 |
| Nov 2, 2:15 PM MST | 134 | 2.38 | 43.2 | 194–277 |
| Nov 2, 1:15 PM MST | 134 | 2.38 | 43.2 | 194–277 |
| Nov 2, 12:15 PM MST | 134 | 2.38 | 43 | 194–277 |
| Nov 2, 11:15 AM MST | 134 | 2.38 | 42.8 | 194–277 |
| Nov 2, 10:15 AM MST | 134 | 2.38 | 42.8 | 194–277 |
| Nov 2, 9:15 AM MST | 134 | 2.38 | 42.8 | 194–277 |
| Nov 2, 8:15 AM MST | 132 | 2.37 | 42.8 | 194–277 |
| Nov 2, 7:15 AM MST | 132 | 2.37 | 43.2 | 194–277 |
| Nov 2, 6:15 AM MST | 132 | 2.37 | 43.3 | 194–277 |
| Nov 2, 5:15 AM MST | 132 | 2.37 | 43.7 | 194–277 |
| Nov 2, 4:15 AM MST | 132 | 2.37 | 43.7 | 194–277 |
| Nov 2, 3:15 AM MST | 132 | 2.37 | 43.9 | 194–277 |
| Nov 2, 2:15 AM MST | 132 | 2.37 | 44.2 | 194–277 |
| Nov 2, 1:15 AM MST | 132 | 2.37 | 44.2 | 194–277 |
| Nov 2, 12:15 AM MST | 134 | 2.38 | 44.2 | 194–277 |
| Nov 1, 11:15 PM MST | 134 | 2.38 | 44.4 | 198–268 |
| Nov 1, 10:15 PM MST | 134 | 2.38 | 44.6 | 198–268 |
| Nov 1, 9:15 PM MST | 134 | 2.38 | 44.6 | 198–268 |
| Nov 1, 8:15 PM MST | 134 | 2.38 | 44.8 | 198–268 |
| Nov 1, 7:15 PM MST | 134 | 2.38 | 44.8 | 198–268 |
| Nov 1, 6:15 PM MST | 134 | 2.38 | 44.8 | 198–268 |
| Nov 1, 5:15 PM MST | 134 | 2.38 | 44.8 | 198–268 |
| Nov 1, 4:15 PM MST | 134 | 2.38 | 45 | 198–268 |
| Nov 1, 3:15 PM MST | 134 | 2.38 | 44.8 | 198–268 |
| Nov 1, 2:15 PM MST | 134 | 2.38 | 44.6 | 198–268 |
| Nov 1, 1:15 PM MST | 134 | 2.38 | 44.4 | 198–268 |
| Nov 1, 12:15 PM MST | 134 | 2.38 | 43.9 | 198–268 |
| Nov 1, 11:15 AM MST | 134 | 2.38 | 43.3 | 198–268 |
| Nov 1, 10:15 AM MST | 134 | 2.38 | 43.2 | 198–268 |
| Nov 1, 9:15 AM MST | 134 | 2.38 | 42.8 | 198–268 |
| Nov 1, 8:15 AM MST | 132 | 2.37 | 42.8 | 198–268 |
| Nov 1, 7:15 AM MST | 129 | 2.36 | 42.6 | 198–268 |
| Nov 1, 6:15 AM MST | 127 | 2.35 | 42.8 | 198–268 |
| Nov 1, 5:15 AM MST | 125 | 2.34 | 42.8 | 198–268 |
| Nov 1, 4:15 AM MST | 125 | 2.34 | 43 | 198–268 |
| Nov 1, 3:15 AM MST | 125 | 2.34 | 43 | 198–268 |
| Nov 1, 2:15 AM MST | 125 | 2.34 | 43.2 | 198–268 |
| Nov 1, 1:15 AM MST | 127 | 2.35 | 43.2 | 198–268 |
| Nov 1, 1:15 AM MDT | 127 | 2.35 | 43.3 | 198–268 |
| Nov 1, 12:15 AM MDT | 127 | 2.35 | 43.5 | 198–268 |
| Oct 31, 11:15 PM MDT | 127 | 2.35 | 43.5 | 198–266 |
| Oct 31, 10:15 PM MDT | 127 | 2.35 | 43.3 | 198–266 |
| Oct 31, 9:15 PM MDT | 127 | 2.35 | 43.5 | 198–266 |
| Oct 31, 8:15 PM MDT | 127 | 2.35 | 43.7 | 198–266 |
| Oct 31, 7:15 PM MDT | 127 | 2.35 | 43.9 | 198–266 |
| Oct 31, 6:15 PM MDT | 127 | 2.35 | 44.2 | 198–266 |
| Oct 31, 5:15 PM MDT | 127 | 2.35 | 44.6 | 198–266 |
| Oct 31, 4:15 PM MDT | 127 | 2.35 | 44.6 | 198–266 |
| Oct 31, 3:15 PM MDT | 127 | 2.35 | 44.4 | 198–266 |
| Oct 31, 2:15 PM MDT | 127 | 2.35 | 43.5 | 198–266 |
| Oct 31, 1:15 PM MDT | 125 | 2.34 | 43 | 198–266 |
| Oct 31, 12:15 PM MDT | 120 | 2.32 | 42.6 | 198–266 |
| Oct 31, 11:15 AM MDT | 113 | 2.29 | 42.4 | 198–266 |
| Oct 31, 10:15 AM MDT | 111 | 2.28 | 42.4 | 198–266 |
| Oct 31, 9:15 AM MDT | 113 | 2.29 | 42.4 | 198–266 |
| Oct 31, 8:15 AM MDT | 113 | 2.29 | 42.4 | 198–266 |
| Oct 31, 7:15 AM MDT | 113 | 2.29 | 42.4 | 198–266 |
| Oct 31, 6:15 AM MDT | 115 | 2.3 | 42.6 | 198–266 |
| Oct 31, 5:15 AM MDT | 115 | 2.3 | 42.8 | 198–266 |
| Oct 31, 4:15 AM MDT | 118 | 2.31 | 42.8 | 198–266 |
| Oct 31, 3:15 AM MDT | 118 | 2.31 | 43 | 198–266 |
| Oct 31, 2:15 AM MDT | 120 | 2.32 | 43.2 | 198–266 |
| Oct 31, 1:15 AM MDT | 122 | 2.33 | 43.3 | 198–266 |
| Oct 31, 12:15 AM MDT | 122 | 2.33 | 43.7 | 198–266 |
| Oct 30, 11:15 PM MDT | 125 | 2.34 | 43.9 | 192–278 |
| Oct 30, 10:15 PM MDT | 125 | 2.34 | 44.1 | 192–278 |
| Oct 30, 9:15 PM MDT | 127 | 2.35 | 44.2 | 192–278 |
| Oct 30, 8:15 PM MDT | 127 | 2.35 | 44.6 | 192–278 |
| Oct 30, 7:15 PM MDT | 127 | 2.35 | 45 | 192–278 |
| Oct 30, 6:15 PM MDT | 127 | 2.35 | 45.5 | 192–278 |
| Oct 30, 5:15 PM MDT | 127 | 2.35 | 45.7 | 192–278 |
| Oct 30, 4:15 PM MDT | 127 | 2.35 | 45.7 | 192–278 |
| Oct 30, 3:15 PM MDT | 127 | 2.35 | 45.1 | 192–278 |
| Oct 30, 2:15 PM MDT | 127 | 2.35 | 44.6 | 192–278 |
| Oct 30, 1:15 PM MDT | 125 | 2.34 | 43.5 | 192–278 |
| Oct 30, 12:15 PM MDT | 122 | 2.33 | 42.4 | 192–278 |
| Oct 30, 11:15 AM MDT | 120 | 2.32 | 41.4 | 192–278 |
| Oct 30, 10:15 AM MDT | 118 | 2.31 | 40.8 | 192–278 |
| Oct 30, 9:15 AM MDT | 118 | 2.31 | 40.3 | 192–278 |
| Oct 30, 8:15 AM MDT | 118 | 2.31 | 40.5 | 192–278 |
| Oct 30, 7:15 AM MDT | 120 | 2.32 | 40.8 | 192–278 |
| Oct 30, 6:15 AM MDT | 122 | 2.33 | 41.2 | 192–278 |
| Oct 30, 5:15 AM MDT | 122 | 2.33 | 41.5 | 192–278 |
| Oct 30, 4:15 AM MDT | 125 | 2.34 | 41.9 | 192–278 |
| Oct 30, 3:15 AM MDT | 125 | 2.34 | 42.3 | 192–278 |
| Oct 30, 2:15 AM MDT | 127 | 2.35 | 42.6 | 192–278 |
| Oct 30, 1:15 AM MDT | 127 | 2.35 | 43 | 192–278 |
| Oct 30, 12:15 AM MDT | 127 | 2.35 | 43.5 | 192–278 |
| Oct 29, 11:15 PM MDT | 127 | 2.35 | 43.9 | 194–264 |
| Oct 29, 10:15 PM MDT | 127 | 2.35 | 44.2 | 194–264 |
| Oct 29, 9:15 PM MDT | 127 | 2.35 | 44.4 | 194–264 |
| Oct 29, 8:15 PM MDT | 127 | 2.35 | 44.6 | 194–264 |
| Oct 29, 7:15 PM MDT | 127 | 2.35 | 44.8 | 194–264 |
| Oct 29, 6:15 PM MDT | 127 | 2.35 | 45.1 | 194–264 |
Normal for Nov 5: 190–263 ft³/s (middle half of 66 years of record). Now: 137 ft³/s, much below normal.
Much below normal for this date. 137 ft³/s is below the 10th percentile of daily mean flow for Nov 5 at this gauge over 66 years of record (1961–2026): 10th 166, 25th 190, median 230, 75th 263, 90th 309 ft³/s.
Daily means on record for Nov 5: lowest 129 ft³/s, highest 483 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 (−1.4% 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.
Water temperature, last 7 days: 169 readings from Oct 29, 6:15 PM MDT to Nov 5, 5:15 PM MST; ranging 37.9 to 45.7 °F; latest 43.3 °F.
USGS provisional data may be revised. Source: USGS instantaneous values.
| Time | Water temperature (°F) |
|---|---|
| Nov 5, 5:15 PM MST | 43.3 |
| Nov 5, 4:15 PM MST | 43.3 |
| Nov 5, 3:15 PM MST | 43 |
| Nov 5, 2:15 PM MST | 42.4 |
| Nov 5, 1:15 PM MST | 41.5 |
| Nov 5, 12:15 PM MST | 40.3 |
| Nov 5, 11:15 AM MST | 39.2 |
| Nov 5, 10:15 AM MST | 38.5 |
| Nov 5, 9:15 AM MST | 37.9 |
| Nov 5, 8:15 AM MST | 37.9 |
| Nov 5, 7:15 AM MST | 38.1 |
| Nov 5, 6:15 AM MST | 38.5 |
| Nov 5, 5:15 AM MST | 38.8 |
| Nov 5, 4:15 AM MST | 39.4 |
| Nov 5, 3:15 AM MST | 39.9 |
| Nov 5, 2:15 AM MST | 40.3 |
| Nov 5, 1:15 AM MST | 40.6 |
| Nov 5, 12:15 AM MST | 41.2 |
| Nov 4, 11:15 PM MST | 41.7 |
| Nov 4, 10:15 PM MST | 42.3 |
| Nov 4, 9:15 PM MST | 42.6 |
| Nov 4, 8:15 PM MST | 43.2 |
| Nov 4, 7:15 PM MST | 43.3 |
| Nov 4, 6:15 PM MST | 43.5 |
| Nov 4, 5:15 PM MST | 43.9 |
| Nov 4, 4:15 PM MST | 43.9 |
| Nov 4, 3:15 PM MST | 43.9 |
| Nov 4, 2:15 PM MST | 43.5 |
| Nov 4, 1:15 PM MST | 42.4 |
| Nov 4, 12:15 PM MST | 41.4 |
| Nov 4, 11:15 AM MST | 40.5 |
| Nov 4, 10:15 AM MST | 39.6 |
| Nov 4, 9:15 AM MST | 38.8 |
| Nov 4, 8:15 AM MST | 38.7 |
| Nov 4, 7:15 AM MST | 38.8 |
| Nov 4, 6:15 AM MST | 39.2 |
| Nov 4, 5:15 AM MST | 39.7 |
| Nov 4, 4:15 AM MST | 40.1 |
| Nov 4, 3:15 AM MST | 40.6 |
| Nov 4, 2:15 AM MST | 41 |
| Nov 4, 1:15 AM MST | 41.4 |
| Nov 4, 12:15 AM MST | 41.9 |
| Nov 3, 11:15 PM MST | 42.4 |
| Nov 3, 10:15 PM MST | 43 |
| Nov 3, 9:15 PM MST | 43.5 |
| Nov 3, 8:15 PM MST | 44.1 |
| Nov 3, 7:15 PM MST | 44.6 |
| Nov 3, 6:15 PM MST | 45 |
| Nov 3, 5:15 PM MST | 45.1 |
| Nov 3, 4:15 PM MST | 45.5 |
| Nov 3, 3:15 PM MST | 45.5 |
| Nov 3, 2:15 PM MST | 45.1 |
| Nov 3, 1:15 PM MST | 44.2 |
| Nov 3, 12:15 PM MST | 43.3 |
| Nov 3, 11:15 AM MST | 42.3 |
| Nov 3, 10:15 AM MST | 41.4 |
| Nov 3, 9:15 AM MST | 40.6 |
| Nov 3, 8:15 AM MST | 40.3 |
| Nov 3, 7:15 AM MST | 40.5 |
| Nov 3, 6:15 AM MST | 40.8 |
| Nov 3, 5:15 AM MST | 41.2 |
| Nov 3, 4:15 AM MST | 41.5 |
| Nov 3, 3:15 AM MST | 41.9 |
| Nov 3, 2:15 AM MST | 42.3 |
| Nov 3, 1:15 AM MST | 42.4 |
| Nov 3, 12:15 AM MST | 42.8 |
| Nov 2, 11:15 PM MST | 42.8 |
| Nov 2, 10:15 PM MST | 42.8 |
| Nov 2, 9:15 PM MST | 43 |
| Nov 2, 8:15 PM MST | 43 |
| Nov 2, 7:15 PM MST | 43 |
| Nov 2, 6:15 PM MST | 43 |
| Nov 2, 5:15 PM MST | 43.2 |
| Nov 2, 4:15 PM MST | 43.2 |
| Nov 2, 3:15 PM MST | 43.2 |
| Nov 2, 2:15 PM MST | 43.2 |
| Nov 2, 1:15 PM MST | 43.2 |
| Nov 2, 12:15 PM MST | 43 |
| Nov 2, 11:15 AM MST | 42.8 |
| Nov 2, 10:15 AM MST | 42.8 |
| Nov 2, 9:15 AM MST | 42.8 |
| Nov 2, 8:15 AM MST | 42.8 |
| Nov 2, 7:15 AM MST | 43.2 |
| Nov 2, 6:15 AM MST | 43.3 |
| Nov 2, 5:15 AM MST | 43.7 |
| Nov 2, 4:15 AM MST | 43.7 |
| Nov 2, 3:15 AM MST | 43.9 |
| Nov 2, 2:15 AM MST | 44.2 |
| Nov 2, 1:15 AM MST | 44.2 |
| Nov 2, 12:15 AM MST | 44.2 |
| Nov 1, 11:15 PM MST | 44.4 |
| Nov 1, 10:15 PM MST | 44.6 |
| Nov 1, 9:15 PM MST | 44.6 |
| Nov 1, 8:15 PM MST | 44.8 |
| Nov 1, 7:15 PM MST | 44.8 |
| Nov 1, 6:15 PM MST | 44.8 |
| Nov 1, 5:15 PM MST | 44.8 |
| Nov 1, 4:15 PM MST | 45 |
| Nov 1, 3:15 PM MST | 44.8 |
| Nov 1, 2:15 PM MST | 44.6 |
| Nov 1, 1:15 PM MST | 44.4 |
| Nov 1, 12:15 PM MST | 43.9 |
| Nov 1, 11:15 AM MST | 43.3 |
| Nov 1, 10:15 AM MST | 43.2 |
| Nov 1, 9:15 AM MST | 42.8 |
| Nov 1, 8:15 AM MST | 42.8 |
| Nov 1, 7:15 AM MST | 42.6 |
| Nov 1, 6:15 AM MST | 42.8 |
| Nov 1, 5:15 AM MST | 42.8 |
| Nov 1, 4:15 AM MST | 43 |
| Nov 1, 3:15 AM MST | 43 |
| Nov 1, 2:15 AM MST | 43.2 |
| Nov 1, 1:15 AM MST | 43.2 |
| Nov 1, 1:15 AM MDT | 43.3 |
| Nov 1, 12:15 AM MDT | 43.5 |
| Oct 31, 11:15 PM MDT | 43.5 |
| Oct 31, 10:15 PM MDT | 43.3 |
| Oct 31, 9:15 PM MDT | 43.5 |
| Oct 31, 8:15 PM MDT | 43.7 |
| Oct 31, 7:15 PM MDT | 43.9 |
| Oct 31, 6:15 PM MDT | 44.2 |
| Oct 31, 5:15 PM MDT | 44.6 |
| Oct 31, 4:15 PM MDT | 44.6 |
| Oct 31, 3:15 PM MDT | 44.4 |
| Oct 31, 2:15 PM MDT | 43.5 |
| Oct 31, 1:15 PM MDT | 43 |
| Oct 31, 12:15 PM MDT | 42.6 |
| Oct 31, 11:15 AM MDT | 42.4 |
| Oct 31, 10:15 AM MDT | 42.4 |
| Oct 31, 9:15 AM MDT | 42.4 |
| Oct 31, 8:15 AM MDT | 42.4 |
| Oct 31, 7:15 AM MDT | 42.4 |
| Oct 31, 6:15 AM MDT | 42.6 |
| Oct 31, 5:15 AM MDT | 42.8 |
| Oct 31, 4:15 AM MDT | 42.8 |
| Oct 31, 3:15 AM MDT | 43 |
| Oct 31, 2:15 AM MDT | 43.2 |
| Oct 31, 1:15 AM MDT | 43.3 |
| Oct 31, 12:15 AM MDT | 43.7 |
| Oct 30, 11:15 PM MDT | 43.9 |
| Oct 30, 10:15 PM MDT | 44.1 |
| Oct 30, 9:15 PM MDT | 44.2 |
| Oct 30, 8:15 PM MDT | 44.6 |
| Oct 30, 7:15 PM MDT | 45 |
| Oct 30, 6:15 PM MDT | 45.5 |
| Oct 30, 5:15 PM MDT | 45.7 |
| Oct 30, 4:15 PM MDT | 45.7 |
| Oct 30, 3:15 PM MDT | 45.1 |
| Oct 30, 2:15 PM MDT | 44.6 |
| Oct 30, 1:15 PM MDT | 43.5 |
| Oct 30, 12:15 PM MDT | 42.4 |
| Oct 30, 11:15 AM MDT | 41.4 |
| Oct 30, 10:15 AM MDT | 40.8 |
| Oct 30, 9:15 AM MDT | 40.3 |
| Oct 30, 8:15 AM MDT | 40.5 |
| Oct 30, 7:15 AM MDT | 40.8 |
| Oct 30, 6:15 AM MDT | 41.2 |
| Oct 30, 5:15 AM MDT | 41.5 |
| Oct 30, 4:15 AM MDT | 41.9 |
| Oct 30, 3:15 AM MDT | 42.3 |
| Oct 30, 2:15 AM MDT | 42.6 |
| Oct 30, 1:15 AM MDT | 43 |
| Oct 30, 12:15 AM MDT | 43.5 |
| Oct 29, 11:15 PM MDT | 43.9 |
| Oct 29, 10:15 PM MDT | 44.2 |
| Oct 29, 9:15 PM MDT | 44.4 |
| Oct 29, 8:15 PM MDT | 44.6 |
| Oct 29, 7:15 PM MDT | 44.8 |
| Oct 29, 6:15 PM MDT | 45.1 |
Map of USGS gauge 06306300 and the river around it
Where Tongue River at State Line nr Decker MT sits, with 1 other gauge on the same river and our water's map point.
Under Montana FWP's 68°F line. Water 43.3°F now; the highest in the last 24 hours was 43.9°F. Montana FWP cites a study in which trout “caught and released from water with a temperature above 68 degrees F were far more likely to perish than those taken from cooler water.” Water warms through the day: “Fish in the cool morning hours.”
“Giving a hoot”, Montana Outdoors (July–August 2024) (Montana Fish, Wildlife & Parks) Drought and fishing (Montana Fish, Wildlife & Parks)This gauge is on our page for Tongue River, but no agency page we read lists its species.
Cold water. Water 43.3°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)Specific conductance 684 µS/cm at Nov 5, 5:15 PM MST; 7-day range 683–717 µS/cm
Dissolved ions: Specific conductance rises with the ions dissolved in the water. No fishing threshold is published for it; compare with this gauge's own recent readings.
Conductivity (Electrical Conductance) and Water (U.S. Geological Survey)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 2.39 ft stage, 159 ft³/s at Nov 5, 5:15 PM MST (NWS gauge DSLM8; its stage datum can differ from the USGS gauge height).
NWS has not set flood categories for this gauge.
Forecasts are not available. Only observed stages are available for this point.
Open the NWS gauge page · What the categories mean (National Weather Service)
This gauge is on Tongue River: regulations, guides and shops
USGS gauge page USGS statistics NWS gauge DSLM8
Checked Nov 5, 6:00 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.