TUOLUMNE R A GRAND CYN OF TUOLUMNE AB HETCH HETCHY
USGS 11274790 · California · reports discharge (live), gauge height, water temperature, turbidity, specific conductance
Reading TUOLUMNE R A GRAND CYN OF TUOLUMNE AB HETCH HETCHY…
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USGS 11274790 · California · reports discharge (live), gauge height, water temperature, turbidity, specific conductance
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, 5:45 PM PST · provisional USGS data
Normal for Nov 5 Steady · 24 h
Discharge, last 7 days: 169 readings from Oct 29, 6:45 PM PDT to Nov 5, 5:45 PM PST; ranging 10.1 to 53.2 ft³/s; latest 19.3 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, 5:45 PM PST | 19.3 | 7.02 | 44.8 | 11–127 |
| Nov 5, 4:45 PM PST | 19.7 | 7.03 | 45 | 11–127 |
| Nov 5, 3:45 PM PST | 20.2 | 7.04 | 45.3 | 11–127 |
| Nov 5, 2:45 PM PST | 20.2 | 7.04 | 45.5 | 11–127 |
| Nov 5, 1:45 PM PST | 20.6 | 7.05 | 46 | 11–127 |
| Nov 5, 12:45 PM PST | 20.6 | 7.05 | 46.6 | 11–127 |
| Nov 5, 11:45 AM PST | 21 | 7.06 | 45.9 | 11–127 |
| Nov 5, 10:45 AM PST | 21 | 7.06 | 45.1 | 11–127 |
| Nov 5, 9:45 AM PST | 21 | 7.06 | 45 | 11–127 |
| Nov 5, 8:45 AM PST | 21 | 7.06 | 45.1 | 11–127 |
| Nov 5, 7:45 AM PST | 20.6 | 7.05 | 45.3 | 11–127 |
| Nov 5, 6:45 AM PST | 21 | 7.06 | 45.5 | 11–127 |
| Nov 5, 5:45 AM PST | 21 | 7.06 | 45.7 | 11–127 |
| Nov 5, 4:45 AM PST | 21.5 | 7.07 | 45.9 | 11–127 |
| Nov 5, 3:45 AM PST | 21.5 | 7.07 | 46 | 11–127 |
| Nov 5, 2:45 AM PST | 21.5 | 7.07 | 46 | 11–127 |
| Nov 5, 1:45 AM PST | 21.9 | 7.08 | 46 | 11–127 |
| Nov 5, 12:45 AM PST | 22.4 | 7.09 | 46 | 11–127 |
| Nov 4, 11:45 PM PST | 21.9 | 7.08 | 46.2 | 11–165 |
| Nov 4, 10:45 PM PST | 21.9 | 7.08 | 46.2 | 11–165 |
| Nov 4, 9:45 PM PST | 21 | 7.06 | 46 | 11–165 |
| Nov 4, 8:45 PM PST | 19.7 | 7.03 | 45.9 | 11–165 |
| Nov 4, 7:45 PM PST | 19.7 | 7.03 | 45.7 | 11–165 |
| Nov 4, 6:45 PM PST | 19.7 | 7.03 | 45.7 | 11–165 |
| Nov 4, 5:45 PM PST | 20.2 | 7.04 | 45.9 | 11–165 |
| Nov 4, 4:45 PM PST | 20.6 | 7.05 | 46 | 11–165 |
| Nov 4, 3:45 PM PST | 21.5 | 7.07 | 46.2 | 11–165 |
| Nov 4, 2:45 PM PST | 21.5 | 7.07 | 46.6 | 11–165 |
| Nov 4, 1:45 PM PST | 21.5 | 7.07 | 47.1 | 11–165 |
| Nov 4, 12:45 PM PST | 21.9 | 7.08 | 47.7 | 11–165 |
| Nov 4, 11:45 AM PST | 21.9 | 7.08 | 47.1 | 11–165 |
| Nov 4, 10:45 AM PST | 22.4 | 7.09 | 46 | 11–165 |
| Nov 4, 9:45 AM PST | 22.4 | 7.09 | 45.9 | 11–165 |
| Nov 4, 8:45 AM PST | 22.4 | 7.09 | 46 | 11–165 |
| Nov 4, 7:45 AM PST | 22.4 | 7.09 | 46.2 | 11–165 |
| Nov 4, 6:45 AM PST | 22.4 | 7.09 | 46.4 | 11–165 |
| Nov 4, 5:45 AM PST | 22.9 | 7.1 | 46.6 | 11–165 |
| Nov 4, 4:45 AM PST | 23.4 | 7.11 | 46.9 | 11–165 |
| Nov 4, 3:45 AM PST | 24.3 | 7.13 | 47.1 | 11–165 |
| Nov 4, 2:45 AM PST | 23.8 | 7.12 | 47.3 | 11–165 |
| Nov 4, 1:45 AM PST | 24.3 | 7.13 | 47.5 | 11–165 |
| Nov 4, 12:45 AM PST | 24.8 | 7.14 | 47.7 | 11–165 |
| Nov 3, 11:45 PM PST | 25.3 | 7.15 | 47.7 | 12–211 |
| Nov 3, 10:45 PM PST | 25.8 | 7.16 | 47.7 | 12–211 |
| Nov 3, 9:45 PM PST | 26.3 | 7.17 | 47.7 | 12–211 |
| Nov 3, 8:45 PM PST | 26.9 | 7.18 | 47.7 | 12–211 |
| Nov 3, 7:45 PM PST | 26.3 | 7.17 | 47.5 | 12–211 |
| Nov 3, 6:45 PM PST | 26.3 | 7.17 | 47.5 | 12–211 |
| Nov 3, 5:45 PM PST | 25.3 | 7.15 | 47.5 | 12–211 |
| Nov 3, 4:45 PM PST | 21.5 | 7.07 | 47.7 | 12–211 |
| Nov 3, 3:45 PM PST | 20.2 | 7.04 | 47.8 | 12–211 |
| Nov 3, 2:45 PM PST | 20.2 | 7.04 | 48 | 12–211 |
| Nov 3, 1:45 PM PST | 20.6 | 7.05 | 48.4 | 12–211 |
| Nov 3, 12:45 PM PST | 20.6 | 7.05 | 48.6 | 12–211 |
| Nov 3, 11:45 AM PST | 20.6 | 7.05 | 47.8 | 12–211 |
| Nov 3, 10:45 AM PST | 20.6 | 7.05 | 47.1 | 12–211 |
| Nov 3, 9:45 AM PST | 21 | 7.06 | 46.6 | 12–211 |
| Nov 3, 8:45 AM PST | 21.5 | 7.07 | 46.2 | 12–211 |
| Nov 3, 7:45 AM PST | 21.5 | 7.07 | 46 | 12–211 |
| Nov 3, 6:45 AM PST | 22.9 | 7.1 | 46 | 12–211 |
| Nov 3, 5:45 AM PST | 23.4 | 7.11 | 46.4 | 12–211 |
| Nov 3, 4:45 AM PST | 23.8 | 7.12 | 46.6 | 12–211 |
| Nov 3, 3:45 AM PST | 24.8 | 7.14 | 46.8 | 12–211 |
| Nov 3, 2:45 AM PST | 25.8 | 7.16 | 46.9 | 12–211 |
| Nov 3, 1:45 AM PST | 26.3 | 7.17 | 47.1 | 12–211 |
| Nov 3, 12:45 AM PST | 26.9 | 7.18 | 47.3 | 12–211 |
| Nov 2, 11:45 PM PST | 27.4 | 7.19 | 47.5 | 11–235 |
| Nov 2, 10:45 PM PST | 27.9 | 7.2 | 47.5 | 11–235 |
| Nov 2, 9:45 PM PST | 28.5 | 7.21 | 47.7 | 11–235 |
| Nov 2, 8:45 PM PST | 28.5 | 7.21 | 47.7 | 11–235 |
| Nov 2, 7:45 PM PST | 28.5 | 7.21 | 47.7 | 11–235 |
| Nov 2, 6:45 PM PST | 27.9 | 7.2 | 47.5 | 11–235 |
| Nov 2, 5:45 PM PST | 29 | 7.22 | 47.5 | 11–235 |
| Nov 2, 4:45 PM PST | 29 | 7.22 | 47.5 | 11–235 |
| Nov 2, 3:45 PM PST | 30.1 | 7.24 | 47.5 | 11–235 |
| Nov 2, 2:45 PM PST | 30.7 | 7.25 | 47.5 | 11–235 |
| Nov 2, 1:45 PM PST | 31.2 | 7.26 | 47.5 | 11–235 |
| Nov 2, 12:45 PM PST | 31.8 | 7.27 | 47.3 | 11–235 |
| Nov 2, 11:45 AM PST | 33 | 7.29 | 47.3 | 11–235 |
| Nov 2, 10:45 AM PST | 33.6 | 7.3 | 46.9 | 11–235 |
| Nov 2, 9:45 AM PST | 34.2 | 7.31 | 46.6 | 11–235 |
| Nov 2, 8:45 AM PST | 34.8 | 7.32 | 46.4 | 11–235 |
| Nov 2, 7:45 AM PST | 35.4 | 7.33 | 46.4 | 11–235 |
| Nov 2, 6:45 AM PST | 35.4 | 7.33 | 46.4 | 11–235 |
| Nov 2, 5:45 AM PST | 36.1 | 7.34 | 46.8 | 11–235 |
| Nov 2, 4:45 AM PST | 35.4 | 7.33 | 46.8 | 11–235 |
| Nov 2, 3:45 AM PST | 32.4 | 7.28 | 47.1 | 11–235 |
| Nov 2, 2:45 AM PST | 31.8 | 7.27 | 47.3 | 11–235 |
| Nov 2, 1:45 AM PST | 32.4 | 7.28 | 47.7 | 11–235 |
| Nov 2, 12:45 AM PST | 33 | 7.29 | 48 | 11–235 |
| Nov 1, 11:45 PM PST | 34.2 | 7.31 | 48.2 | 10–106 |
| Nov 1, 10:45 PM PST | 35.4 | 7.33 | 48.6 | 10–106 |
| Nov 1, 9:45 PM PST | 35.4 | 7.33 | 48.7 | 10–106 |
| Nov 1, 8:45 PM PST | 35.4 | 7.33 | 48.7 | 10–106 |
| Nov 1, 7:45 PM PST | 36.1 | 7.34 | 48.7 | 10–106 |
| Nov 1, 6:45 PM PST | 36.7 | 7.35 | 48.6 | 10–106 |
| Nov 1, 5:45 PM PST | 36.7 | 7.35 | 48.4 | 10–106 |
| Nov 1, 4:45 PM PST | 35.4 | 7.33 | 48.2 | 10–106 |
| Nov 1, 3:45 PM PST | 36.1 | 7.34 | 48.2 | 10–106 |
| Nov 1, 2:45 PM PST | 38 | 7.37 | 48.2 | 10–106 |
| Nov 1, 1:45 PM PST | 40.6 | 7.41 | 48.2 | 10–106 |
| Nov 1, 12:45 PM PST | 44.1 | 7.46 | 48.4 | 10–106 |
| Nov 1, 11:45 AM PST | 47.8 | 7.51 | 48.2 | 10–106 |
| Nov 1, 10:45 AM PST | 47.8 | 7.51 | 47.8 | 10–106 |
| Nov 1, 9:45 AM PST | 49.3 | 7.53 | 47.7 | 10–106 |
| Nov 1, 8:45 AM PST | 53.2 | 7.58 | 48 | 10–106 |
| Nov 1, 7:45 AM PST | 52.4 | 7.57 | 48.4 | 10–106 |
| Nov 1, 6:45 AM PST | 53.2 | 7.58 | 48.7 | 10–106 |
| Nov 1, 5:45 AM PST | 48.5 | 7.52 | 49.1 | 10–106 |
| Nov 1, 4:45 AM PST | 45.6 | 7.48 | 49.5 | 10–106 |
| Nov 1, 3:45 AM PST | 36.7 | 7.35 | 49.6 | 10–106 |
| Nov 1, 2:45 AM PST | 29 | 7.22 | 49.8 | 10–106 |
| Nov 1, 1:45 AM PST | 24.8 | 7.14 | 50 | 10–106 |
| Nov 1, 1:45 AM PDT | 22.9 | 7.1 | 50.2 | 10–106 |
| Nov 1, 12:45 AM PDT | 20.2 | 7.04 | 50.4 | 10–106 |
| Oct 31, 11:45 PM PDT | 17.6 | 6.98 | 50.5 | 9.3–71 |
| Oct 31, 10:45 PM PDT | 16.9 | 6.96 | 50.7 | 9.3–71 |
| Oct 31, 9:45 PM PDT | 16.5 | 6.95 | 50.7 | 9.3–71 |
| Oct 31, 8:45 PM PDT | 16.1 | 6.94 | 50.7 | 9.3–71 |
| Oct 31, 7:45 PM PDT | 15.7 | 6.93 | 50.9 | 9.3–71 |
| Oct 31, 6:45 PM PDT | 15.3 | 6.92 | 51.1 | 9.3–71 |
| Oct 31, 5:45 PM PDT | 15.3 | 6.92 | 51.1 | 9.3–71 |
| Oct 31, 4:45 PM PDT | 15.3 | 6.92 | 51.3 | 9.3–71 |
| Oct 31, 3:45 PM PDT | 16.5 | 6.95 | 51.3 | 9.3–71 |
| Oct 31, 2:45 PM PDT | 15.7 | 6.93 | 51.3 | 9.3–71 |
| Oct 31, 1:45 PM PDT | 16.1 | 6.94 | 51.1 | 9.3–71 |
| Oct 31, 12:45 PM PDT | 15 | 6.91 | 50.9 | 9.3–71 |
| Oct 31, 11:45 AM PDT | 13.9 | 6.88 | 50.4 | 9.3–71 |
| Oct 31, 10:45 AM PDT | 13.9 | 6.88 | 50.2 | 9.3–71 |
| Oct 31, 9:45 AM PDT | 13.6 | 6.87 | 50 | 9.3–71 |
| Oct 31, 8:45 AM PDT | 13.2 | 6.86 | 49.8 | 9.3–71 |
| Oct 31, 7:45 AM PDT | 13.2 | 6.86 | 49.8 | 9.3–71 |
| Oct 31, 6:45 AM PDT | 13.2 | 6.86 | 49.8 | 9.3–71 |
| Oct 31, 5:45 AM PDT | 13.2 | 6.86 | 50 | 9.3–71 |
| Oct 31, 4:45 AM PDT | 13.6 | 6.87 | 50 | 9.3–71 |
| Oct 31, 3:45 AM PDT | 13.6 | 6.87 | 50 | 9.3–71 |
| Oct 31, 2:45 AM PDT | 12.9 | 6.85 | 50 | 9.3–71 |
| Oct 31, 1:45 AM PDT | 12.2 | 6.83 | 50 | 9.3–71 |
| Oct 31, 12:45 AM PDT | 12.2 | 6.83 | 50 | 9.3–71 |
| Oct 30, 11:45 PM PDT | 12.9 | 6.85 | 50.2 | 9.4–80 |
| Oct 30, 10:45 PM PDT | 12.9 | 6.85 | 50.2 | 9.4–80 |
| Oct 30, 9:45 PM PDT | 13.2 | 6.86 | 50.4 | 9.4–80 |
| Oct 30, 8:45 PM PDT | 12.9 | 6.85 | 50.4 | 9.4–80 |
| Oct 30, 7:45 PM PDT | 12.6 | 6.84 | 50.4 | 9.4–80 |
| Oct 30, 6:45 PM PDT | 12.2 | 6.83 | 50.4 | 9.4–80 |
| Oct 30, 5:45 PM PDT | 11.9 | 6.82 | 50.5 | 9.4–80 |
| Oct 30, 4:45 PM PDT | 11.6 | 6.81 | 50.7 | 9.4–80 |
| Oct 30, 3:45 PM PDT | 11 | 6.79 | 50.4 | 9.4–80 |
| Oct 30, 2:45 PM PDT | 10.7 | 6.78 | 50.4 | 9.4–80 |
| Oct 30, 1:45 PM PDT | 10.7 | 6.78 | 50.2 | 9.4–80 |
| Oct 30, 12:45 PM PDT | 10.7 | 6.78 | 49.8 | 9.4–80 |
| Oct 30, 11:45 AM PDT | 10.7 | 6.78 | 49.6 | 9.4–80 |
| Oct 30, 10:45 AM PDT | 10.7 | 6.78 | 49.3 | 9.4–80 |
| Oct 30, 9:45 AM PDT | 11 | 6.79 | 48.9 | 9.4–80 |
| Oct 30, 8:45 AM PDT | 11 | 6.79 | 48.7 | 9.4–80 |
| Oct 30, 7:45 AM PDT | 11 | 6.79 | 48.7 | 9.4–80 |
| Oct 30, 6:45 AM PDT | 11 | 6.79 | 48.7 | 9.4–80 |
| Oct 30, 5:45 AM PDT | 10.7 | 6.78 | 48.7 | 9.4–80 |
| Oct 30, 4:45 AM PDT | 10.4 | 6.77 | 48.7 | 9.4–80 |
| Oct 30, 3:45 AM PDT | 10.4 | 6.77 | 48.7 | 9.4–80 |
| Oct 30, 2:45 AM PDT | 10.1 | 6.76 | 48.7 | 9.4–80 |
| Oct 30, 1:45 AM PDT | 10.1 | 6.76 | 48.7 | 9.4–80 |
| Oct 30, 12:45 AM PDT | 10.4 | 6.77 | 48.7 | 9.4–80 |
| Oct 29, 11:45 PM PDT | 10.4 | 6.77 | 48.7 | 9.4–97 |
| Oct 29, 10:45 PM PDT | 10.4 | 6.77 | 48.7 | 9.4–97 |
| Oct 29, 9:45 PM PDT | 10.7 | 6.78 | 48.7 | 9.4–97 |
| Oct 29, 8:45 PM PDT | 10.7 | 6.78 | 48.7 | 9.4–97 |
| Oct 29, 7:45 PM PDT | 10.7 | 6.78 | 48.9 | 9.4–97 |
| Oct 29, 6:45 PM PDT | 10.7 | 6.78 | 48.9 | 9.4–97 |
Water temperature, last 7 days: 169 readings from Oct 29, 6:45 PM PDT to Nov 5, 5:45 PM PST; ranging 44.8 to 51.3 °F; latest 44.8 °F.
USGS provisional data may be revised. Source: USGS instantaneous values.
| Time | Water temperature (°F) |
|---|---|
| Nov 5, 5:45 PM PST | 44.8 |
| Nov 5, 4:45 PM PST | 45 |
| Nov 5, 3:45 PM PST | 45.3 |
| Nov 5, 2:45 PM PST | 45.5 |
| Nov 5, 1:45 PM PST | 46 |
| Nov 5, 12:45 PM PST | 46.6 |
| Nov 5, 11:45 AM PST | 45.9 |
| Nov 5, 10:45 AM PST | 45.1 |
| Nov 5, 9:45 AM PST | 45 |
| Nov 5, 8:45 AM PST | 45.1 |
| Nov 5, 7:45 AM PST | 45.3 |
| Nov 5, 6:45 AM PST | 45.5 |
| Nov 5, 5:45 AM PST | 45.7 |
| Nov 5, 4:45 AM PST | 45.9 |
| Nov 5, 3:45 AM PST | 46 |
| Nov 5, 2:45 AM PST | 46 |
| Nov 5, 1:45 AM PST | 46 |
| Nov 5, 12:45 AM PST | 46 |
| Nov 4, 11:45 PM PST | 46.2 |
| Nov 4, 10:45 PM PST | 46.2 |
| Nov 4, 9:45 PM PST | 46 |
| Nov 4, 8:45 PM PST | 45.9 |
| Nov 4, 7:45 PM PST | 45.7 |
| Nov 4, 6:45 PM PST | 45.7 |
| Nov 4, 5:45 PM PST | 45.9 |
| Nov 4, 4:45 PM PST | 46 |
| Nov 4, 3:45 PM PST | 46.2 |
| Nov 4, 2:45 PM PST | 46.6 |
| Nov 4, 1:45 PM PST | 47.1 |
| Nov 4, 12:45 PM PST | 47.7 |
| Nov 4, 11:45 AM PST | 47.1 |
| Nov 4, 10:45 AM PST | 46 |
| Nov 4, 9:45 AM PST | 45.9 |
| Nov 4, 8:45 AM PST | 46 |
| Nov 4, 7:45 AM PST | 46.2 |
| Nov 4, 6:45 AM PST | 46.4 |
| Nov 4, 5:45 AM PST | 46.6 |
| Nov 4, 4:45 AM PST | 46.9 |
| Nov 4, 3:45 AM PST | 47.1 |
| Nov 4, 2:45 AM PST | 47.3 |
| Nov 4, 1:45 AM PST | 47.5 |
| Nov 4, 12:45 AM PST | 47.7 |
| Nov 3, 11:45 PM PST | 47.7 |
| Nov 3, 10:45 PM PST | 47.7 |
| Nov 3, 9:45 PM PST | 47.7 |
| Nov 3, 8:45 PM PST | 47.7 |
| Nov 3, 7:45 PM PST | 47.5 |
| Nov 3, 6:45 PM PST | 47.5 |
| Nov 3, 5:45 PM PST | 47.5 |
| Nov 3, 4:45 PM PST | 47.7 |
| Nov 3, 3:45 PM PST | 47.8 |
| Nov 3, 2:45 PM PST | 48 |
| Nov 3, 1:45 PM PST | 48.4 |
| Nov 3, 12:45 PM PST | 48.6 |
| Nov 3, 11:45 AM PST | 47.8 |
| Nov 3, 10:45 AM PST | 47.1 |
| Nov 3, 9:45 AM PST | 46.6 |
| Nov 3, 8:45 AM PST | 46.2 |
| Nov 3, 7:45 AM PST | 46 |
| Nov 3, 6:45 AM PST | 46 |
| Nov 3, 5:45 AM PST | 46.4 |
| Nov 3, 4:45 AM PST | 46.6 |
| Nov 3, 3:45 AM PST | 46.8 |
| Nov 3, 2:45 AM PST | 46.9 |
| Nov 3, 1:45 AM PST | 47.1 |
| Nov 3, 12:45 AM PST | 47.3 |
| Nov 2, 11:45 PM PST | 47.5 |
| Nov 2, 10:45 PM PST | 47.5 |
| Nov 2, 9:45 PM PST | 47.7 |
| Nov 2, 8:45 PM PST | 47.7 |
| Nov 2, 7:45 PM PST | 47.7 |
| Nov 2, 6:45 PM PST | 47.5 |
| Nov 2, 5:45 PM PST | 47.5 |
| Nov 2, 4:45 PM PST | 47.5 |
| Nov 2, 3:45 PM PST | 47.5 |
| Nov 2, 2:45 PM PST | 47.5 |
| Nov 2, 1:45 PM PST | 47.5 |
| Nov 2, 12:45 PM PST | 47.3 |
| Nov 2, 11:45 AM PST | 47.3 |
| Nov 2, 10:45 AM PST | 46.9 |
| Nov 2, 9:45 AM PST | 46.6 |
| Nov 2, 8:45 AM PST | 46.4 |
| Nov 2, 7:45 AM PST | 46.4 |
| Nov 2, 6:45 AM PST | 46.4 |
| Nov 2, 5:45 AM PST | 46.8 |
| Nov 2, 4:45 AM PST | 46.8 |
| Nov 2, 3:45 AM PST | 47.1 |
| Nov 2, 2:45 AM PST | 47.3 |
| Nov 2, 1:45 AM PST | 47.7 |
| Nov 2, 12:45 AM PST | 48 |
| Nov 1, 11:45 PM PST | 48.2 |
| Nov 1, 10:45 PM PST | 48.6 |
| Nov 1, 9:45 PM PST | 48.7 |
| Nov 1, 8:45 PM PST | 48.7 |
| Nov 1, 7:45 PM PST | 48.7 |
| Nov 1, 6:45 PM PST | 48.6 |
| Nov 1, 5:45 PM PST | 48.4 |
| Nov 1, 4:45 PM PST | 48.2 |
| Nov 1, 3:45 PM PST | 48.2 |
| Nov 1, 2:45 PM PST | 48.2 |
| Nov 1, 1:45 PM PST | 48.2 |
| Nov 1, 12:45 PM PST | 48.4 |
| Nov 1, 11:45 AM PST | 48.2 |
| Nov 1, 10:45 AM PST | 47.8 |
| Nov 1, 9:45 AM PST | 47.7 |
| Nov 1, 8:45 AM PST | 48 |
| Nov 1, 7:45 AM PST | 48.4 |
| Nov 1, 6:45 AM PST | 48.7 |
| Nov 1, 5:45 AM PST | 49.1 |
| Nov 1, 4:45 AM PST | 49.5 |
| Nov 1, 3:45 AM PST | 49.6 |
| Nov 1, 2:45 AM PST | 49.8 |
| Nov 1, 1:45 AM PST | 50 |
| Nov 1, 1:45 AM PDT | 50.2 |
| Nov 1, 12:45 AM PDT | 50.4 |
| Oct 31, 11:45 PM PDT | 50.5 |
| Oct 31, 10:45 PM PDT | 50.7 |
| Oct 31, 9:45 PM PDT | 50.7 |
| Oct 31, 8:45 PM PDT | 50.7 |
| Oct 31, 7:45 PM PDT | 50.9 |
| Oct 31, 6:45 PM PDT | 51.1 |
| Oct 31, 5:45 PM PDT | 51.1 |
| Oct 31, 4:45 PM PDT | 51.3 |
| Oct 31, 3:45 PM PDT | 51.3 |
| Oct 31, 2:45 PM PDT | 51.3 |
| Oct 31, 1:45 PM PDT | 51.1 |
| Oct 31, 12:45 PM PDT | 50.9 |
| Oct 31, 11:45 AM PDT | 50.4 |
| Oct 31, 10:45 AM PDT | 50.2 |
| Oct 31, 9:45 AM PDT | 50 |
| Oct 31, 8:45 AM PDT | 49.8 |
| Oct 31, 7:45 AM PDT | 49.8 |
| Oct 31, 6:45 AM PDT | 49.8 |
| Oct 31, 5:45 AM PDT | 50 |
| Oct 31, 4:45 AM PDT | 50 |
| Oct 31, 3:45 AM PDT | 50 |
| Oct 31, 2:45 AM PDT | 50 |
| Oct 31, 1:45 AM PDT | 50 |
| Oct 31, 12:45 AM PDT | 50 |
| Oct 30, 11:45 PM PDT | 50.2 |
| Oct 30, 10:45 PM PDT | 50.2 |
| Oct 30, 9:45 PM PDT | 50.4 |
| Oct 30, 8:45 PM PDT | 50.4 |
| Oct 30, 7:45 PM PDT | 50.4 |
| Oct 30, 6:45 PM PDT | 50.4 |
| Oct 30, 5:45 PM PDT | 50.5 |
| Oct 30, 4:45 PM PDT | 50.7 |
| Oct 30, 3:45 PM PDT | 50.4 |
| Oct 30, 2:45 PM PDT | 50.4 |
| Oct 30, 1:45 PM PDT | 50.2 |
| Oct 30, 12:45 PM PDT | 49.8 |
| Oct 30, 11:45 AM PDT | 49.6 |
| Oct 30, 10:45 AM PDT | 49.3 |
| Oct 30, 9:45 AM PDT | 48.9 |
| Oct 30, 8:45 AM PDT | 48.7 |
| Oct 30, 7:45 AM PDT | 48.7 |
| Oct 30, 6:45 AM PDT | 48.7 |
| Oct 30, 5:45 AM PDT | 48.7 |
| Oct 30, 4:45 AM PDT | 48.7 |
| Oct 30, 3:45 AM PDT | 48.7 |
| Oct 30, 2:45 AM PDT | 48.7 |
| Oct 30, 1:45 AM PDT | 48.7 |
| Oct 30, 12:45 AM PDT | 48.7 |
| Oct 29, 11:45 PM PDT | 48.7 |
| Oct 29, 10:45 PM PDT | 48.7 |
| Oct 29, 9:45 PM PDT | 48.7 |
| Oct 29, 8:45 PM PDT | 48.7 |
| Oct 29, 7:45 PM PDT | 48.9 |
| Oct 29, 6:45 PM PDT | 48.9 |
Map of USGS gauge 11274790 and the river around it
Where TUOLUMNE R A GRAND CYN OF TUOLUMNE AB HETCH HETCHY sits, with 3 other gauges on the same river and our water's map point.
Normal for Nov 5: 11–127 ft³/s (middle half of 19 years of record). Now: 19.3 ft³/s, normal.
Normal for this date. 19.3 ft³/s is between the 25th and 75th percentiles of daily mean flow for Nov 5 at this gauge over 19 years of record (2007–2025): 10th 9.3, 25th 11, median 25, 75th 127, 90th 359 ft³/s.
Daily means on record for Nov 5: lowest 3.95 ft³/s, highest 411 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 (−4.5% 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.
Under CDFW's 67°F line. Water 44.8°F now; the highest in the last 24 hours was 46.6°F. That is not over the 67°F CDFW uses for its voluntary “Hoot Owl” watchlist: “Sustained afternoon water temperatures exceeding 67 degrees Fahrenheit for trout fisheries could trigger additions to the list.” Water warms in the afternoon; check again later in the day.
CDFW Recommends “Hoot Owl” Practices for Fishing Inland Waters During Drought (15 July 2022) (California Department of Fish and Wildlife)This gauge is on the same river as our page for Tuolumne River, but no agency page we read lists its species.
Cold water. Water 44.8°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)Turbidity 0.8 FNU at Nov 5, 5:45 PM PST; 7-day range 0.7–1.2 FNU
Water clarity: Turbidity measures the relative clarity of water: higher means murkier. No agency publishes a fishing threshold for it; compare with this gauge's own recent readings.
Turbidity and Water (U.S. Geological Survey)Specific conductance 49 µS/cm at Nov 5, 5:45 PM PST; 7-day range 38–49 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.
The National Weather Service has no flood-stage gauge here, so no official flood category is shown.
Checked Nov 5, 6:06 PM PST; 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.