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SAN JOAQUIN RIVER DELTA - ROUGH & READY ISLAND (RRIC1)
| Latitude: 37.96º N | Longitude: 121.36º W | Elevation: 15 Feet | | | |
| Location: San Joaquin County in California | Bulletin Group: San Joaquin | River Group: San Joaquin |
| Issuance Time: | Feb 11 2026 at 1:23 PM PST | Next Issuance: | Feb 12 2026 at 9:00 AM PST
| |
| Action/Monitor: N/A | Minor Flood: N/A | Moderate Flood: N/A | Major Flood: N/A |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: San Joaquin River Delta - Rough and Ready Island (RRIC1)
#
# File Generation Time: 02/11/2026 at 01:25 PM PST
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 02/11/2026 at 01:00 PM PST
# Maximum Observed Stage: 7.00 Feet
#
# Earliest Date & Time of Maximum Forecast: 02/15/2026 at 04:00 PM PST
# Maximum Forecast Stage: 7.49 Feet
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Trend Observed Status
# ------------------------------------------------------------------
02/06/2026 01 PM PST 4.32 Not Applicable
02/06/2026 02 PM PST 3.96 - Not Applicable
02/06/2026 03 PM PST 3.59 - Not Applicable
02/06/2026 04 PM PST 3.46 - Not Applicable
02/06/2026 05 PM PST 3.96 + Not Applicable
02/06/2026 06 PM PST 4.83 + Not Applicable
02/06/2026 07 PM PST 5.34 + Not Applicable
02/06/2026 08 PM PST 5.51 + Not Applicable
02/06/2026 09 PM PST 5.62 + Not Applicable
02/06/2026 10 PM PST 5.36 - Not Applicable
02/06/2026 11 PM PST 4.73 - Not Applicable
02/07/2026 12 AM PST 4.23 - Not Applicable
02/07/2026 01 AM PST 3.89 - Not Applicable
02/07/2026 02 AM PST 3.52 - Not Applicable
02/07/2026 03 AM PST 3.23 - Not Applicable
02/07/2026 04 AM PST 3.38 + Not Applicable
02/07/2026 05 AM PST 4.23 + Not Applicable
02/07/2026 06 AM PST 5.02 + Not Applicable
02/07/2026 07 AM PST 5.50 + Not Applicable
02/07/2026 08 AM PST 5.91 + Not Applicable
02/07/2026 09 AM PST 6.18 + Not Applicable
02/07/2026 10 AM PST 6.28 + Not Applicable
02/07/2026 11 AM PST 5.89 - Not Applicable
02/07/2026 12 PM PST 5.15 - Not Applicable
02/07/2026 01 PM PST 4.66 - Not Applicable
02/07/2026 02 PM PST 4.25 - Not Applicable
02/07/2026 03 PM PST 3.80 - Not Applicable
02/07/2026 04 PM PST 3.42 - Not Applicable
02/07/2026 05 PM PST 3.28 - Not Applicable
02/07/2026 06 PM PST 3.65 + Not Applicable
02/07/2026 07 PM PST 4.42 + Not Applicable
02/07/2026 08 PM PST 4.86 + Not Applicable
02/07/2026 09 PM PST 5.02 + Not Applicable
02/07/2026 10 PM PST 5.04 + Not Applicable
02/07/2026 11 PM PST 4.77 - Not Applicable
02/08/2026 12 AM PST 4.28 - Not Applicable
02/08/2026 01 AM PST 3.90 - Not Applicable
02/08/2026 02 AM PST 3.63 - Not Applicable
02/08/2026 03 AM PST 3.39 - Not Applicable
02/08/2026 04 AM PST 3.34 - Not Applicable
02/08/2026 05 AM PST 3.87 + Not Applicable
02/08/2026 06 AM PST 4.64 + Not Applicable
02/08/2026 07 AM PST 5.17 + Not Applicable
02/08/2026 08 AM PST 5.58 + Not Applicable
02/08/2026 09 AM PST 5.92 + Not Applicable
02/08/2026 10 AM PST 6.14 + Not Applicable
02/08/2026 11 AM PST 6.00 - Not Applicable
02/08/2026 12 PM PST 5.37 - Not Applicable
02/08/2026 01 PM PST 4.78 - Not Applicable
02/08/2026 02 PM PST 4.39 - Not Applicable
02/08/2026 03 PM PST 3.96 - Not Applicable
02/08/2026 04 PM PST 3.49 - Not Applicable
02/08/2026 05 PM PST 3.16 - Not Applicable
02/08/2026 06 PM PST 3.05 - Not Applicable
02/08/2026 07 PM PST 3.36 + Not Applicable
02/08/2026 08 PM PST 3.99 + Not Applicable
02/08/2026 09 PM PST 4.40 + Not Applicable
02/08/2026 10 PM PST 4.59 + Not Applicable
02/08/2026 11 PM PST 4.69 + Not Applicable
02/09/2026 12 AM PST 4.63 - Not Applicable
02/09/2026 01 AM PST 4.34 - Not Applicable
02/09/2026 02 AM PST 4.05 - Not Applicable
02/09/2026 03 AM PST 3.91 - Not Applicable
02/09/2026 04 AM PST 3.87 - Not Applicable
02/09/2026 05 AM PST 4.07 + Not Applicable
02/09/2026 06 AM PST 4.59 + Not Applicable
02/09/2026 07 AM PST 5.15 + Not Applicable
02/09/2026 08 AM PST 5.53 + Not Applicable
02/09/2026 09 AM PST 5.75 + Not Applicable
02/09/2026 10 AM PST 6.14 + Not Applicable
02/09/2026 11 AM PST 6.20 + Not Applicable
02/09/2026 12 PM PST 5.90 - Not Applicable
02/09/2026 01 PM PST 5.32 - Not Applicable
02/09/2026 02 PM PST 4.82 - Not Applicable
02/09/2026 03 PM PST 4.37 - Not Applicable
02/09/2026 04 PM PST 3.90 - Not Applicable
02/09/2026 05 PM PST 3.43 - Not Applicable
02/09/2026 06 PM PST 3.06 - Not Applicable
02/09/2026 07 PM PST 2.85 - Not Applicable
02/09/2026 08 PM PST 2.92 + Not Applicable
02/09/2026 09 PM PST 3.52 + Not Applicable
02/09/2026 10 PM PST 4.13 + Not Applicable
02/09/2026 11 PM PST 4.44 + Not Applicable
02/10/2026 12 AM PST 4.66 + Not Applicable
02/10/2026 01 AM PST 4.75 + Not Applicable
02/10/2026 02 AM PST 4.76 + Not Applicable
02/10/2026 03 AM PST 4.77 + Not Applicable
02/10/2026 04 AM PST 4.85 + Not Applicable
02/10/2026 05 AM PST 5.03 + Not Applicable
02/10/2026 06 AM PST 5.29 + Not Applicable
02/10/2026 07 AM PST 5.59 + Not Applicable
02/10/2026 08 AM PST 5.89 + Not Applicable
02/10/2026 09 AM PST 6.15 + Not Applicable
02/10/2026 10 AM PST 6.30 + Not Applicable
02/10/2026 11 AM PST 6.50 + Not Applicable
02/10/2026 12 PM PST 6.49 - Not Applicable
02/10/2026 01 PM PST 6.14 - Not Applicable
02/10/2026 02 PM PST 5.59 - Not Applicable
02/10/2026 03 PM PST 5.13 - Not Applicable
02/10/2026 04 PM PST 4.72 - Not Applicable
02/10/2026 05 PM PST 4.24 - Not Applicable
02/10/2026 06 PM PST 3.79 - Not Applicable
02/10/2026 07 PM PST 3.41 - Not Applicable
02/10/2026 08 PM PST 3.14 - Not Applicable
02/10/2026 09 PM PST 3.10 - Not Applicable
02/10/2026 10 PM PST 3.58 + Not Applicable
02/10/2026 11 PM PST 4.27 + Not Applicable
02/11/2026 12 AM PST 4.68 + Not Applicable
02/11/2026 01 AM PST 4.91 + Not Applicable
02/11/2026 02 AM PST 5.05 + Not Applicable
02/11/2026 03 AM PST 5.16 + Not Applicable
02/11/2026 04 AM PST 5.19 + Not Applicable
02/11/2026 05 AM PST 5.10 - Not Applicable
02/11/2026 06 AM PST 5.14 + Not Applicable
02/11/2026 07 AM PST 5.52 + Not Applicable
02/11/2026 08 AM PST 5.90 + Not Applicable
02/11/2026 09 AM PST 6.20 + Not Applicable
02/11/2026 10 AM PST 6.50 + Not Applicable
02/11/2026 11 AM PST 6.83 + Not Applicable
02/11/2026 12 PM PST 6.93 + Not Applicable
02/11/2026 01 PM PST 7.00 + Not Applicable
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Trend Forecast Status
# ------------------------------------------------------------------
02/11/2026 02 PM PST 6.97 Not Applicable
02/11/2026 03 PM PST 6.74 - Not Applicable
02/11/2026 04 PM PST 6.26 - Not Applicable
02/11/2026 05 PM PST 5.65 - Not Applicable
02/11/2026 06 PM PST 4.96 - Not Applicable
02/11/2026 07 PM PST 4.35 - Not Applicable
02/11/2026 08 PM PST 3.83 - Not Applicable
02/11/2026 09 PM PST 3.65 - Not Applicable
02/11/2026 10 PM PST 3.74 + Not Applicable
02/11/2026 11 PM PST 4.07 + Not Applicable
02/12/2026 12 AM PST 4.55 + Not Applicable
02/12/2026 01 AM PST 5.03 + Not Applicable
02/12/2026 02 AM PST 5.48 + Not Applicable
02/12/2026 03 AM PST 5.77 + Not Applicable
02/12/2026 04 AM PST 5.85 + Not Applicable
02/12/2026 05 AM PST 5.82 - Not Applicable
02/12/2026 06 AM PST 5.78 - Not Applicable
02/12/2026 07 AM PST 5.81 + Not Applicable
02/12/2026 08 AM PST 5.89 + Not Applicable
02/12/2026 09 AM PST 6.02 + Not Applicable
02/12/2026 10 AM PST 6.17 + Not Applicable
02/12/2026 11 AM PST 6.33 + Not Applicable
02/12/2026 12 PM PST 6.49 + Not Applicable
02/12/2026 01 PM PST 6.61 + Not Applicable
02/12/2026 02 PM PST 6.69 + Not Applicable
02/12/2026 03 PM PST 6.65 - Not Applicable
02/12/2026 04 PM PST 6.34 - Not Applicable
02/12/2026 05 PM PST 5.77 - Not Applicable
02/12/2026 06 PM PST 5.02 - Not Applicable
02/12/2026 07 PM PST 4.29 - Not Applicable
02/12/2026 08 PM PST 3.63 - Not Applicable
02/12/2026 09 PM PST 3.37 - Not Applicable
02/12/2026 10 PM PST 3.42 + Not Applicable
02/12/2026 11 PM PST 3.74 + Not Applicable
02/13/2026 12 AM PST 4.22 + Not Applicable
02/13/2026 01 AM PST 4.75 + Not Applicable
02/13/2026 02 AM PST 5.26 + Not Applicable
02/13/2026 03 AM PST 5.71 + Not Applicable
02/13/2026 04 AM PST 5.97 + Not Applicable
02/13/2026 05 AM PST 6.04 + Not Applicable
02/13/2026 06 AM PST 5.96 - Not Applicable
02/13/2026 07 AM PST 5.90 - Not Applicable
02/13/2026 08 AM PST 5.92 + Not Applicable
02/13/2026 09 AM PST 6.01 + Not Applicable
02/13/2026 10 AM PST 6.14 + Not Applicable
02/13/2026 11 AM PST 6.31 + Not Applicable
02/13/2026 12 PM PST 6.49 + Not Applicable
02/13/2026 01 PM PST 6.66 + Not Applicable
02/13/2026 02 PM PST 6.80 + Not Applicable
02/13/2026 03 PM PST 6.89 + Not Applicable
02/13/2026 04 PM PST 6.84 - Not Applicable
02/13/2026 05 PM PST 6.52 - Not Applicable
02/13/2026 06 PM PST 5.91 - Not Applicable
02/13/2026 07 PM PST 5.12 - Not Applicable
02/13/2026 08 PM PST 4.35 - Not Applicable
02/13/2026 09 PM PST 3.65 - Not Applicable
02/13/2026 10 PM PST 3.37 - Not Applicable
02/13/2026 11 PM PST 3.44 + Not Applicable
02/14/2026 12 AM PST 3.79 + Not Applicable
02/14/2026 01 AM PST 4.33 + Not Applicable
02/14/2026 02 AM PST 4.89 + Not Applicable
02/14/2026 03 AM PST 5.48 + Not Applicable
02/14/2026 04 AM PST 5.94 + Not Applicable
02/14/2026 05 AM PST 6.23 + Not Applicable
02/14/2026 06 AM PST 6.25 + Not Applicable
02/14/2026 07 AM PST 6.03 - Not Applicable
02/14/2026 08 AM PST 5.86 - Not Applicable
02/14/2026 09 AM PST 5.88 + Not Applicable
02/14/2026 10 AM PST 6.03 + Not Applicable
02/14/2026 11 AM PST 6.26 + Not Applicable
02/14/2026 12 PM PST 6.55 + Not Applicable
02/14/2026 01 PM PST 6.83 + Not Applicable
02/14/2026 02 PM PST 7.07 + Not Applicable
02/14/2026 03 PM PST 7.23 + Not Applicable
02/14/2026 04 PM PST 7.23 0 Not Applicable
02/14/2026 05 PM PST 6.97 - Not Applicable
02/14/2026 06 PM PST 6.41 - Not Applicable
02/14/2026 07 PM PST 5.67 - Not Applicable
02/14/2026 08 PM PST 4.86 - Not Applicable
02/14/2026 09 PM PST 4.08 - Not Applicable
02/14/2026 10 PM PST 3.49 - Not Applicable
02/14/2026 11 PM PST 3.26 - Not Applicable
02/15/2026 12 AM PST 3.41 + Not Applicable
02/15/2026 01 AM PST 3.92 + Not Applicable
02/15/2026 02 AM PST 4.66 + Not Applicable
02/15/2026 03 AM PST 5.39 + Not Applicable
02/15/2026 04 AM PST 6.02 + Not Applicable
02/15/2026 05 AM PST 6.44 + Not Applicable
02/15/2026 06 AM PST 6.57 + Not Applicable
02/15/2026 07 AM PST 6.38 - Not Applicable
02/15/2026 08 AM PST 5.99 - Not Applicable
02/15/2026 09 AM PST 5.63 - Not Applicable
02/15/2026 10 AM PST 5.47 - Not Applicable
02/15/2026 11 AM PST 5.63 + Not Applicable
02/15/2026 12 PM PST 6.01 + Not Applicable
02/15/2026 01 PM PST 6.52 + Not Applicable
02/15/2026 02 PM PST 7.02 + Not Applicable
02/15/2026 03 PM PST 7.37 + Not Applicable
02/15/2026 04 PM PST 7.49 + Not Applicable
02/15/2026 05 PM PST 7.29 - Not Applicable
02/15/2026 06 PM PST 6.81 - Not Applicable
02/15/2026 07 PM PST 6.11 - Not Applicable
02/15/2026 08 PM PST 5.31 - Not Applicable
02/15/2026 09 PM PST 4.53 - Not Applicable
02/15/2026 10 PM PST 3.76 - Not Applicable
02/15/2026 11 PM PST 3.25 - Not Applicable
02/16/2026 12 AM PST 3.07 - Not Applicable
02/16/2026 01 AM PST 3.35 + Not Applicable
02/16/2026 02 AM PST 4.07 + Not Applicable
02/16/2026 03 AM PST 5.01 + Not Applicable
02/16/2026 04 AM PST 5.86 + Not Applicable
#
# NOTE 1: Stages are rounded to the nearest hundredth (.01) of a foot.
# NOTE 2: Trends are determined using hourly change in unrounded stage.
# NOTE 3: Maximum Values are determined using unrounded stage.
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