SAN LORENZO R A BIG TREES CA
USGS 11160500 · California · reports discharge (live), gauge height
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USGS 11160500 · California · 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, 6:30 PM PST · provisional USGS data
Normal for Nov 5 Falling · 24 h Below NWS action stage
Discharge, last 7 days: 169 readings from Oct 29, 7:30 PM PDT to Nov 5, 6:30 PM PST; ranging 16.5 to 32.6 ft³/s; latest 19.5 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, 6:30 PM PST | 19.5 | 3.26 | 15–26 |
| Nov 5, 5:30 PM PST | 19.9 | 3.27 | 15–26 |
| Nov 5, 4:30 PM PST | 19.9 | 3.27 | 15–26 |
| Nov 5, 3:30 PM PST | 19.9 | 3.27 | 15–26 |
| Nov 5, 2:30 PM PST | 20.3 | 3.28 | 15–26 |
| Nov 5, 1:30 PM PST | 20.3 | 3.28 | 15–26 |
| Nov 5, 12:30 PM PST | 20.3 | 3.28 | 15–26 |
| Nov 5, 11:30 AM PST | 20.3 | 3.28 | 15–26 |
| Nov 5, 10:30 AM PST | 19.9 | 3.27 | 15–26 |
| Nov 5, 9:30 AM PST | 19.9 | 3.27 | 15–26 |
| Nov 5, 8:30 AM PST | 20.3 | 3.28 | 15–26 |
| Nov 5, 7:30 AM PST | 20.3 | 3.28 | 15–26 |
| Nov 5, 6:30 AM PST | 20.3 | 3.28 | 15–26 |
| Nov 5, 5:30 AM PST | 20.3 | 3.28 | 15–26 |
| Nov 5, 4:30 AM PST | 20.7 | 3.29 | 15–26 |
| Nov 5, 3:30 AM PST | 20.7 | 3.29 | 15–26 |
| Nov 5, 2:30 AM PST | 20.7 | 3.29 | 15–26 |
| Nov 5, 1:30 AM PST | 21.2 | 3.3 | 15–26 |
| Nov 5, 12:30 AM PST | 21.2 | 3.3 | 15–26 |
| Nov 4, 11:30 PM PST | 21.2 | 3.3 | 15–26 |
| Nov 4, 10:30 PM PST | 21.2 | 3.3 | 15–26 |
| Nov 4, 9:30 PM PST | 21.2 | 3.3 | 15–26 |
| Nov 4, 8:30 PM PST | 21.6 | 3.31 | 15–26 |
| Nov 4, 7:30 PM PST | 21.6 | 3.31 | 15–26 |
| Nov 4, 6:30 PM PST | 22 | 3.32 | 15–26 |
| Nov 4, 5:30 PM PST | 22.4 | 3.33 | 15–26 |
| Nov 4, 4:30 PM PST | 22.9 | 3.34 | 15–26 |
| Nov 4, 3:30 PM PST | 23.3 | 3.35 | 15–26 |
| Nov 4, 2:30 PM PST | 23.3 | 3.35 | 15–26 |
| Nov 4, 1:30 PM PST | 23.8 | 3.36 | 15–26 |
| Nov 4, 12:30 PM PST | 24.2 | 3.37 | 15–26 |
| Nov 4, 11:30 AM PST | 24.2 | 3.37 | 15–26 |
| Nov 4, 10:30 AM PST | 24.7 | 3.38 | 15–26 |
| Nov 4, 9:30 AM PST | 24.7 | 3.38 | 15–26 |
| Nov 4, 8:30 AM PST | 25.1 | 3.39 | 15–26 |
| Nov 4, 7:30 AM PST | 26.1 | 3.41 | 15–26 |
| Nov 4, 6:30 AM PST | 27 | 3.43 | 15–26 |
| Nov 4, 5:30 AM PST | 28 | 3.45 | 15–26 |
| Nov 4, 4:30 AM PST | 29 | 3.47 | 15–26 |
| Nov 4, 3:30 AM PST | 30.5 | 3.5 | 15–26 |
| Nov 4, 2:30 AM PST | 32.1 | 3.53 | 15–26 |
| Nov 4, 1:30 AM PST | 32.6 | 3.54 | 15–26 |
| Nov 4, 12:30 AM PST | 31.5 | 3.52 | 15–26 |
| Nov 3, 11:30 PM PST | 31.5 | 3.52 | 15–27 |
| Nov 3, 10:30 PM PST | 31.5 | 3.52 | 15–27 |
| Nov 3, 9:30 PM PST | 32.6 | 3.54 | 15–27 |
| Nov 3, 8:30 PM PST | 31.5 | 3.52 | 15–27 |
| Nov 3, 7:30 PM PST | 31.5 | 3.52 | 15–27 |
| Nov 3, 6:30 PM PST | 26.5 | 3.42 | 15–27 |
| Nov 3, 5:30 PM PST | 24.2 | 3.37 | 15–27 |
| Nov 3, 4:30 PM PST | 23.3 | 3.35 | 15–27 |
| Nov 3, 3:30 PM PST | 22.4 | 3.33 | 15–27 |
| Nov 3, 2:30 PM PST | 23.8 | 3.36 | 15–27 |
| Nov 3, 1:30 PM PST | 22.9 | 3.34 | 15–27 |
| Nov 3, 12:30 PM PST | 20.3 | 3.28 | 15–27 |
| Nov 3, 11:30 AM PST | 18.3 | 3.23 | 15–27 |
| Nov 3, 10:30 AM PST | 18 | 3.22 | 15–27 |
| Nov 3, 9:30 AM PST | 18 | 3.22 | 15–27 |
| Nov 3, 8:30 AM PST | 18 | 3.22 | 15–27 |
| Nov 3, 7:30 AM PST | 18 | 3.22 | 15–27 |
| Nov 3, 6:30 AM PST | 18 | 3.22 | 15–27 |
| Nov 3, 5:30 AM PST | 18 | 3.22 | 15–27 |
| Nov 3, 4:30 AM PST | 18 | 3.22 | 15–27 |
| Nov 3, 3:30 AM PST | 18 | 3.22 | 15–27 |
| Nov 3, 2:30 AM PST | 18 | 3.22 | 15–27 |
| Nov 3, 1:30 AM PST | 18 | 3.22 | 15–27 |
| Nov 3, 12:30 AM PST | 18 | 3.22 | 15–27 |
| Nov 2, 11:30 PM PST | 17.6 | 3.21 | 15–27 |
| Nov 2, 10:30 PM PST | 17.6 | 3.21 | 15–27 |
| Nov 2, 9:30 PM PST | 17.6 | 3.21 | 15–27 |
| Nov 2, 8:30 PM PST | 18 | 3.22 | 15–27 |
| Nov 2, 7:30 PM PST | 18 | 3.22 | 15–27 |
| Nov 2, 6:30 PM PST | 18 | 3.22 | 15–27 |
| Nov 2, 5:30 PM PST | 18 | 3.22 | 15–27 |
| Nov 2, 4:30 PM PST | 18 | 3.22 | 15–27 |
| Nov 2, 3:30 PM PST | 18 | 3.22 | 15–27 |
| Nov 2, 2:30 PM PST | 18 | 3.22 | 15–27 |
| Nov 2, 1:30 PM PST | 18 | 3.22 | 15–27 |
| Nov 2, 12:30 PM PST | 17.6 | 3.21 | 15–27 |
| Nov 2, 11:30 AM PST | 17.6 | 3.21 | 15–27 |
| Nov 2, 10:30 AM PST | 17.6 | 3.21 | 15–27 |
| Nov 2, 9:30 AM PST | 18 | 3.22 | 15–27 |
| Nov 2, 8:30 AM PST | 17.6 | 3.21 | 15–27 |
| Nov 2, 7:30 AM PST | 17.6 | 3.21 | 15–27 |
| Nov 2, 6:30 AM PST | 17.6 | 3.21 | 15–27 |
| Nov 2, 5:30 AM PST | 17.6 | 3.21 | 15–27 |
| Nov 2, 4:30 AM PST | 17.6 | 3.21 | 15–27 |
| Nov 2, 3:30 AM PST | 17.6 | 3.21 | 15–27 |
| Nov 2, 2:30 AM PST | 17.6 | 3.21 | 15–27 |
| Nov 2, 1:30 AM PST | 17.6 | 3.21 | 15–27 |
| Nov 2, 12:30 AM PST | 17.6 | 3.21 | 15–27 |
| Nov 1, 11:30 PM PST | 17.6 | 3.21 | 15–24 |
| Nov 1, 10:30 PM PST | 17.6 | 3.21 | 15–24 |
| Nov 1, 9:30 PM PST | 17.6 | 3.21 | 15–24 |
| Nov 1, 8:30 PM PST | 17.6 | 3.21 | 15–24 |
| Nov 1, 7:30 PM PST | 17.6 | 3.21 | 15–24 |
| Nov 1, 6:30 PM PST | 17.6 | 3.21 | 15–24 |
| Nov 1, 5:30 PM PST | 17.6 | 3.21 | 15–24 |
| Nov 1, 4:30 PM PST | 17.6 | 3.21 | 15–24 |
| Nov 1, 3:30 PM PST | 17.6 | 3.21 | 15–24 |
| Nov 1, 2:30 PM PST | 17.6 | 3.21 | 15–24 |
| Nov 1, 1:30 PM PST | 17.6 | 3.21 | 15–24 |
| Nov 1, 12:30 PM PST | 18 | 3.22 | 15–24 |
| Nov 1, 11:30 AM PST | 18 | 3.22 | 15–24 |
| Nov 1, 10:30 AM PST | 18 | 3.22 | 15–24 |
| Nov 1, 9:30 AM PST | 18 | 3.22 | 15–24 |
| Nov 1, 8:30 AM PST | 18 | 3.22 | 15–24 |
| Nov 1, 7:30 AM PST | 18 | 3.22 | 15–24 |
| Nov 1, 6:30 AM PST | 18 | 3.22 | 15–24 |
| Nov 1, 5:30 AM PST | 18.7 | 3.24 | 15–24 |
| Nov 1, 4:30 AM PST | 18.3 | 3.23 | 15–24 |
| Nov 1, 3:30 AM PST | 17.6 | 3.21 | 15–24 |
| Nov 1, 2:30 AM PST | 17.2 | 3.2 | 15–24 |
| Nov 1, 1:30 AM PST | 16.8 | 3.19 | 15–24 |
| Nov 1, 1:30 AM PDT | 16.8 | 3.19 | 15–24 |
| Nov 1, 12:30 AM PDT | 16.8 | 3.19 | 15–24 |
| Oct 31, 11:30 PM PDT | 16.8 | 3.19 | 15–25 |
| Oct 31, 10:30 PM PDT | 16.8 | 3.19 | 15–25 |
| Oct 31, 9:30 PM PDT | 17.2 | 3.2 | 15–25 |
| Oct 31, 8:30 PM PDT | 16.8 | 3.19 | 15–25 |
| Oct 31, 7:30 PM PDT | 17.2 | 3.2 | 15–25 |
| Oct 31, 6:30 PM PDT | 17.2 | 3.2 | 15–25 |
| Oct 31, 5:30 PM PDT | 17.2 | 3.2 | 15–25 |
| Oct 31, 4:30 PM PDT | 17.2 | 3.2 | 15–25 |
| Oct 31, 3:30 PM PDT | 17.2 | 3.2 | 15–25 |
| Oct 31, 2:30 PM PDT | 17.2 | 3.2 | 15–25 |
| Oct 31, 1:30 PM PDT | 16.8 | 3.19 | 15–25 |
| Oct 31, 12:30 PM PDT | 16.8 | 3.19 | 15–25 |
| Oct 31, 11:30 AM PDT | 16.8 | 3.19 | 15–25 |
| Oct 31, 10:30 AM PDT | 16.8 | 3.19 | 15–25 |
| Oct 31, 9:30 AM PDT | 16.8 | 3.19 | 15–25 |
| Oct 31, 8:30 AM PDT | 16.8 | 3.19 | 15–25 |
| Oct 31, 7:30 AM PDT | 16.8 | 3.19 | 15–25 |
| Oct 31, 6:30 AM PDT | 16.8 | 3.19 | 15–25 |
| Oct 31, 5:30 AM PDT | 16.5 | 3.18 | 15–25 |
| Oct 31, 4:30 AM PDT | 16.5 | 3.18 | 15–25 |
| Oct 31, 3:30 AM PDT | 16.5 | 3.18 | 15–25 |
| Oct 31, 2:30 AM PDT | 16.5 | 3.18 | 15–25 |
| Oct 31, 1:30 AM PDT | 16.5 | 3.18 | 15–25 |
| Oct 31, 12:30 AM PDT | 16.5 | 3.18 | 15–25 |
| Oct 30, 11:30 PM PDT | 16.5 | 3.18 | 14–28 |
| Oct 30, 10:30 PM PDT | 16.5 | 3.18 | 14–28 |
| Oct 30, 9:30 PM PDT | 16.5 | 3.18 | 14–28 |
| Oct 30, 8:30 PM PDT | 16.5 | 3.18 | 14–28 |
| Oct 30, 7:30 PM PDT | 16.5 | 3.18 | 14–28 |
| Oct 30, 6:30 PM PDT | 16.8 | 3.19 | 14–28 |
| Oct 30, 5:30 PM PDT | 16.8 | 3.19 | 14–28 |
| Oct 30, 4:30 PM PDT | 16.8 | 3.19 | 14–28 |
| Oct 30, 3:30 PM PDT | 16.8 | 3.19 | 14–28 |
| Oct 30, 2:30 PM PDT | 16.8 | 3.19 | 14–28 |
| Oct 30, 1:30 PM PDT | 16.8 | 3.19 | 14–28 |
| Oct 30, 12:30 PM PDT | 16.8 | 3.19 | 14–28 |
| Oct 30, 11:30 AM PDT | 16.8 | 3.19 | 14–28 |
| Oct 30, 10:30 AM PDT | 16.5 | 3.18 | 14–28 |
| Oct 30, 9:30 AM PDT | 16.8 | 3.19 | 14–28 |
| Oct 30, 8:30 AM PDT | 16.8 | 3.19 | 14–28 |
| Oct 30, 7:30 AM PDT | 16.8 | 3.19 | 14–28 |
| Oct 30, 6:30 AM PDT | 16.5 | 3.18 | 14–28 |
| Oct 30, 5:30 AM PDT | 16.5 | 3.18 | 14–28 |
| Oct 30, 4:30 AM PDT | 16.5 | 3.18 | 14–28 |
| Oct 30, 3:30 AM PDT | 16.8 | 3.19 | 14–28 |
| Oct 30, 2:30 AM PDT | 16.5 | 3.18 | 14–28 |
| Oct 30, 1:30 AM PDT | 16.5 | 3.18 | 14–28 |
| Oct 30, 12:30 AM PDT | 16.5 | 3.18 | 14–28 |
| Oct 29, 11:30 PM PDT | 16.5 | 3.18 | 15–25 |
| Oct 29, 10:30 PM PDT | 16.5 | 3.18 | 15–25 |
| Oct 29, 9:30 PM PDT | 16.5 | 3.18 | 15–25 |
| Oct 29, 8:30 PM PDT | 16.5 | 3.18 | 15–25 |
| Oct 29, 7:30 PM PDT | 16.8 | 3.19 | 15–25 |
Map of USGS gauge 11160500 and the river around it
Where SAN LORENZO R A BIG TREES CA 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 CDFW uses are 67°F.
Species the agency lists for San Lorenzo River: Steelhead.
From our page for San Lorenzo River, on the same river as this gauge; the agency list is for the water, not this exact reach. Source: Steelhead Report and Restoration Card location codes (named river systems) (California Department of Fish and Wildlife Fisheries Branch).
Normal for Nov 5: 15–26 ft³/s (middle half of 90 years of record). Now: 19.5 ft³/s, normal.
Normal for this date. 19.5 ft³/s is between the 25th and 75th percentiles of daily mean flow for Nov 5 at this gauge over 90 years of record (1937–2026): 10th 12, 25th 15, median 22, 75th 26, 90th 38 ft³/s.
Daily means on record for Nov 5: lowest 9.74 ft³/s, highest 226 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).
Falling over 24 hours: discharge down 11.4%, from 22 to 19.5 ft³/s. 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 3.27 ft stage, 20 ft³/s at Nov 5, 5:45 PM PST (NWS gauge BTEC1; its stage datum can differ from the USGS gauge height).
NWS river forecast forecast issued Nov 5, 12:34 PM PST. Highest point: 3.27 ft, 20 ft³/s on Nov 5, 1:00 PM PST (Below NWS action stage).
| Day | Stage | Flow |
|---|---|---|
| Thu, Nov 5 | 3.27 ft | 20 ft³/s |
| Fri, Nov 6 | 3.26 ft | 20 ft³/s |
| Sat, Nov 7 | 3.24 ft | 19 ft³/s |
| Sun, Nov 8 | 3.23 ft | 18 ft³/s |
| Mon, Nov 9 | 3.23 ft | 18 ft³/s |
| Tue, Nov 10 | 3.23 ft | 18 ft³/s |
Open the NWS gauge page · What the categories mean (National Weather Service)
Checked Nov 5, 6:43 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.