BROCK RESERVOIR OUTLET NEAR CALEXICO, CA
USGS 09527660 · California · reports discharge (live), gauge height
Reading BROCK RESERVOIR OUTLET NEAR CALEXICO, CA…
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USGS 09527660 · 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, 7:15 PM MST · provisional USGS data
Below normal for Nov 5 Steady · 24 h
Discharge, last 7 days: 129 readings from Oct 29, 7:45 PM MST to Nov 5, 7:15 PM MST; ranging 0 to 99.7 ft³/s; latest 0 ft³/s; 3 gaps in the record; 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, 7:15 PM MST | 0 | 24.3 | 29–395 |
| Nov 5, 6:15 PM MST | 14.7 | 24.2 | 29–395 |
| Nov 5, 4:45 PM MST | 5.1 | 24.5 | 29–395 |
| Nov 5, 3:00 PM MST | 14.5 | – | 29–395 |
| Nov 5, 1:30 PM MST | 24.5 | 24.3 | 29–395 |
| Nov 5, 12:00 PM MST | 19.1 | – | 29–395 |
| Nov 5, 10:45 AM MST | 64.2 | 24.4 | 29–395 |
| Nov 5, 9:45 AM MST | 34.5 | 24.3 | 29–395 |
| Nov 5, 8:45 AM MST | 96.8 | 24.1 | 29–395 |
| Nov 5, 7:45 AM MST | 19.6 | 24.3 | 29–395 |
| Nov 5, 6:15 AM MST | 0 | 24.3 | 29–395 |
| Nov 5, 5:15 AM MST | 14.8 | 24.4 | 29–395 |
| Nov 5, 4:15 AM MST | 4.93 | 24.4 | 29–395 |
| Nov 5, 3:15 AM MST | 14.7 | 24.4 | 29–395 |
| Nov 5, 2:15 AM MST | 24.2 | 24.3 | 29–395 |
| Nov 5, 1:15 AM MST | 14.6 | 24.3 | 29–395 |
| Nov 4, 10:45 PM MST | 9.68 | 24.2 | 67–287 |
| Nov 4, 9:15 PM MST | 4.94 | 24.4 | 67–287 |
| Nov 4, 7:45 PM MST | 0 | 24.1 | 67–287 |
| Nov 4, 3:45 PM MST | 9.78 | 24.3 | 67–287 |
| Nov 4, 10:45 AM MST | 39.5 | 24.4 | 67–287 |
| Nov 4, 9:45 AM MST | 0 | 24.5 | 67–287 |
| Nov 4, 8:45 AM MST | 5.01 | 24.4 | 67–287 |
| Nov 4, 7:45 AM MST | 19.7 | 24.4 | 67–287 |
| Nov 4, 5:15 AM MST | 35 | 24.5 | 67–287 |
| Nov 4, 4:15 AM MST | 0 | 24.4 | 67–287 |
| Nov 4, 3:15 AM MST | 9.73 | 24.3 | 67–287 |
| Nov 4, 2:15 AM MST | 9.75 | 24.4 | 67–287 |
| Nov 4, 1:15 AM MST | 0 | 24.3 | 67–287 |
| Nov 4, 12:15 AM MST | 49 | 24.4 | 67–287 |
| Nov 3, 11:15 PM MST | 33.9 | 24.3 | 0.15–123 |
| Nov 3, 10:15 PM MST | 33.9 | 24.3 | 0.15–123 |
| Nov 3, 4:00 PM MST | 0 | – | 0.15–123 |
| Nov 3, 3:00 PM MST | 34.8 | – | 0.15–123 |
| Nov 3, 2:00 PM MST | 14.7 | – | 0.15–123 |
| Nov 3, 1:00 PM MST | 59.7 | – | 0.15–123 |
| Nov 3, 11:45 AM MST | 99.7 | 24.3 | 0.15–123 |
| Nov 3, 10:30 AM MST | 10 | 24.5 | 0.15–123 |
| Nov 3, 9:30 AM MST | 0 | 24.7 | 0.15–123 |
| Nov 3, 8:15 AM MST | 0 | 24.4 | 0.15–123 |
| Nov 3, 7:15 AM MST | 0 | 24.3 | 0.15–123 |
| Nov 3, 4:45 AM MST | 14.3 | 24.1 | 0.15–123 |
| Nov 3, 3:15 AM MST | 4.84 | 24.1 | 0.15–123 |
| Nov 3, 1:45 AM MST | 0 | 24.2 | 0.15–123 |
| Nov 3, 12:45 AM MST | 14.3 | 24.2 | 0.15–123 |
| Nov 2, 11:45 PM MST | 19.5 | 24.3 | 0.13–190 |
| Nov 2, 10:45 PM MST | 0 | 24.2 | 0.13–190 |
| Nov 2, 9:30 PM MST | 23.9 | 24.2 | 0.13–190 |
| Nov 2, 8:30 PM MST | 0 | 24 | 0.13–190 |
| Nov 2, 7:30 PM MST | 0 | 24 | 0.13–190 |
| Nov 2, 6:30 PM MST | 19.3 | 24.2 | 0.13–190 |
| Nov 2, 5:30 PM MST | 9.68 | 24.2 | 0.13–190 |
| Nov 2, 4:00 PM MST | 0 | – | 0.13–190 |
| Nov 2, 2:30 PM MST | 0 | 24.4 | 0.13–190 |
| Nov 2, 1:00 PM MST | 24 | – | 0.13–190 |
| Nov 2, 11:30 AM MST | 0 | 24.2 | 0.13–190 |
| Nov 2, 9:45 AM MST | 0 | 24.2 | 0.13–190 |
| Nov 2, 8:45 AM MST | 19.4 | 24.2 | 0.13–190 |
| Nov 2, 7:00 AM MST | 14.3 | – | 0.13–190 |
| Nov 2, 5:30 AM MST | 0 | 24.2 | 0.13–190 |
| Nov 2, 4:15 AM MST | 0 | 24.3 | 0.13–190 |
| Nov 2, 2:30 AM MST | 9.84 | 24.4 | 0.13–190 |
| Nov 2, 1:15 AM MST | 14.1 | 24 | 0.13–190 |
| Nov 2, 12:00 AM MST | 30.2 | – | 0.13–190 |
| Nov 1, 9:30 PM MST | 19.4 | 24.3 | -0.22–162 |
| Nov 1, 8:30 PM MST | 38.9 | 24.3 | -0.22–162 |
| Nov 1, 7:30 PM MST | 34.5 | 24.4 | -0.22–162 |
| Nov 1, 6:30 PM MST | 44.1 | 24.3 | -0.22–162 |
| Nov 1, 5:30 PM MST | 24.5 | 24.4 | -0.22–162 |
| Nov 1, 4:30 PM MST | 9.86 | 24.4 | -0.22–162 |
| Nov 1, 3:30 PM MST | 9.86 | 24.4 | -0.22–162 |
| Nov 1, 2:30 PM MST | 29.5 | 24.4 | -0.22–162 |
| Nov 1, 1:30 PM MST | 54.4 | 24.4 | -0.22–162 |
| Nov 1, 12:15 PM MST | 34.3 | 24.4 | -0.22–162 |
| Nov 1, 11:15 AM MST | 24.1 | 24.2 | -0.22–162 |
| Nov 1, 10:15 AM MST | 33 | 24.1 | -0.22–162 |
| Nov 1, 9:15 AM MST | 23.5 | 23.9 | -0.22–162 |
| Nov 1, 8:15 AM MST | 79.6 | 23.8 | -0.22–162 |
| Nov 1, 5:15 AM MST | 62.2 | 24.1 | -0.22–162 |
| Nov 1, 4:15 AM MST | 42.9 | 24.2 | -0.22–162 |
| Nov 1, 2:30 AM MST | 14.4 | 24.2 | -0.22–162 |
| Nov 1, 1:00 AM MST | 4.84 | – | -0.22–162 |
| Oct 31, 11:00 PM MST | 19.2 | – | -0.12–558 |
| Oct 31, 10:00 PM MST | 90 | – | -0.12–558 |
| Oct 31, 9:00 PM MST | 4.71 | – | -0.12–558 |
| Oct 31, 7:45 PM MST | 57.5 | 24.2 | -0.12–558 |
| Oct 31, 6:45 PM MST | 77.5 | 24.3 | -0.12–558 |
| Oct 31, 5:45 PM MST | 13.8 | 23.9 | -0.12–558 |
| Oct 31, 4:45 PM MST | 33.4 | 24.2 | -0.12–558 |
| Oct 31, 3:45 PM MST | 0 | 24.5 | -0.12–558 |
| Oct 31, 2:30 PM MST | 28.8 | 24.2 | -0.12–558 |
| Oct 31, 1:30 PM MST | 48.3 | 24.2 | -0.12–558 |
| Oct 31, 11:30 AM MST | 18.7 | 24 | -0.12–558 |
| Oct 31, 9:30 AM MST | 0 | 24.2 | -0.12–558 |
| Oct 31, 8:15 AM MST | 0 | 24.1 | -0.12–558 |
| Oct 31, 7:00 AM MST | 19.3 | – | -0.12–558 |
| Oct 31, 6:00 AM MST | 0 | – | -0.12–558 |
| Oct 31, 4:30 AM MST | 0 | 24.2 | -0.12–558 |
| Oct 31, 3:30 AM MST | 19.2 | 24.2 | -0.12–558 |
| Oct 31, 2:00 AM MST | 9.65 | – | -0.12–558 |
| Oct 31, 1:00 AM MST | 9.72 | – | -0.12–558 |
| Oct 31, 12:00 AM MST | 19.6 | – | -0.12–558 |
| Oct 30, 10:45 PM MST | 24.6 | 24.4 | 23–270 |
| Oct 30, 9:45 PM MST | 34.2 | 24.3 | 23–270 |
| Oct 30, 8:45 PM MST | 43.7 | 24.3 | 23–270 |
| Oct 30, 7:45 PM MST | 33.8 | 24.2 | 23–270 |
| Oct 30, 6:45 PM MST | 4.91 | 24.3 | 23–270 |
| Oct 30, 5:45 PM MST | 14.8 | 24.4 | 23–270 |
| Oct 30, 4:45 PM MST | 4.83 | 24.2 | 23–270 |
| Oct 30, 3:45 PM MST | 14.6 | 24.3 | 23–270 |
| Oct 30, 2:45 PM MST | 19.5 | 24.4 | 23–270 |
| Oct 30, 1:45 PM MST | 4.93 | 24.3 | 23–270 |
| Oct 30, 12:45 PM MST | 34.1 | 24.3 | 23–270 |
| Oct 30, 11:45 AM MST | 29.6 | 24.2 | 23–270 |
| Oct 30, 10:45 AM MST | 24.7 | 24.5 | 23–270 |
| Oct 30, 9:45 AM MST | 0 | 24.5 | 23–270 |
| Oct 30, 8:45 AM MST | 4.97 | 24.4 | 23–270 |
| Oct 30, 7:30 AM MST | 0 | 24.4 | 23–270 |
| Oct 30, 6:30 AM MST | 4.95 | 24.4 | 23–270 |
| Oct 30, 5:00 AM MST | 25.1 | – | 23–270 |
| Oct 30, 3:00 AM MST | 10.1 | – | 23–270 |
| Oct 30, 2:00 AM MST | 0 | – | 23–270 |
| Oct 30, 1:00 AM MST | 19.9 | – | 23–270 |
| Oct 30, 12:00 AM MST | 20.1 | – | 23–270 |
| Oct 29, 11:00 PM MST | 56.8 | – | 2.5–260 |
| Oct 29, 10:00 PM MST | 45.2 | – | 2.5–260 |
| Oct 29, 9:00 PM MST | 47.4 | – | 2.5–260 |
| Oct 29, 8:00 PM MST | 76.6 | 24.2 | 2.5–260 |
| Oct 29, 7:45 PM MST | 52.9 | 24.2 | 2.5–260 |
Map of USGS gauge 09527660 and the river around it
Where BROCK RESERVOIR OUTLET NEAR CALEXICO, CA sits.
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 list not on file for this gauge. Check the California Department of Fish and Wildlife: California fish planting schedule · California fishing regulations.
Normal for Nov 5: 29–395 ft³/s (middle half of 13 years of record). Now: 0 ft³/s, below normal.
Below normal for this date. 0 ft³/s is between the 10th and 25th percentiles of daily mean flow for Nov 5 at this gauge over 13 years of record (2014–2026): 10th -1.6, 25th 29, median 162, 75th 395, 90th 550 ft³/s.
Daily means on record for Nov 5: lowest -2.6 ft³/s, highest 557 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.
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.
The National Weather Service has no flood-stage gauge here, so no official flood category is shown.
Checked Nov 5, 7:39 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.