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SACRAMENTO RIVER DELTA - MALLARD ISLAND (MLIC1)
| Latitude: 38.04º N | Longitude: 121.92º W | Elevation: 0 Feet | | Forecast Type: Unofficial Location |
| Location: Contra Costa County in California | Bulletin Group: Lower Sacramento | River Group: Lower Sacramento |
| Issuance Time: | May 21 2026 at 7:59 AM PDT | Next Issuance: | May 22 2026 at 9:00 AM PDT
| |
| Action/Monitor: N/A | Minor Flood: N/A | Moderate Flood: N/A | Major Flood: N/A |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Sacramento River Delta - Mallard Island (MLIC1)
#
# File Generation Time: 05/21/2026 at 08:00 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 05/20/2026 at 05:00 AM PDT
# Maximum Observed Stage: 6.75 Feet
#
# Earliest Date & Time of Maximum Forecast: 05/26/2026 at 12:00 AM PDT
# Maximum Forecast Stage: 5.75 Feet
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Trend Observed Status
# ------------------------------------------------------------------
05/16/2026 08 AM PDT 2.09 Not Applicable
05/16/2026 09 AM PDT 1.49 - Not Applicable
05/16/2026 10 AM PDT 1.22 - Not Applicable
05/16/2026 11 AM PDT 1.38 + Not Applicable
05/16/2026 12 PM PDT 2.69 + Not Applicable
05/16/2026 01 PM PDT 3.77 + Not Applicable
05/16/2026 02 PM PDT 4.53 + Not Applicable
05/16/2026 03 PM PDT 4.93 + Not Applicable
05/16/2026 04 PM PDT 5.04 + Not Applicable
05/16/2026 05 PM PDT 4.91 - Not Applicable
05/16/2026 06 PM PDT 4.35 - Not Applicable
05/16/2026 07 PM PDT 3.67 - Not Applicable
05/16/2026 08 PM PDT 3.24 - Not Applicable
05/16/2026 09 PM PDT 3.26 + Not Applicable
05/16/2026 10 PM PDT 3.85 + Not Applicable
05/16/2026 11 PM PDT 4.91 + Not Applicable
05/17/2026 12 AM PDT 5.76 + Not Applicable
05/17/2026 01 AM PDT 6.38 + Not Applicable
05/17/2026 02 AM PDT 6.66 + Not Applicable
05/17/2026 03 AM PDT 6.68 + Not Applicable
05/17/2026 04 AM PDT 6.20 - Not Applicable
05/17/2026 05 AM PDT 5.09 - Not Applicable
05/17/2026 06 AM PDT 4.01 - Not Applicable
05/17/2026 07 AM PDT 3.24 - Not Applicable
05/17/2026 08 AM PDT 2.57 - Not Applicable
05/17/2026 09 AM PDT 1.86 - Not Applicable
05/17/2026 10 AM PDT 1.31 - Not Applicable
05/17/2026 11 AM PDT 0.96 - Not Applicable
05/17/2026 12 PM PDT 1.47 + Not Applicable
05/17/2026 01 PM PDT 2.69 + Not Applicable
05/17/2026 02 PM PDT 3.89 + Not Applicable
05/17/2026 03 PM PDT 4.65 + Not Applicable
05/17/2026 04 PM PDT 4.94 + Not Applicable
05/17/2026 05 PM PDT 5.01 + Not Applicable
05/17/2026 06 PM PDT 4.73 - Not Applicable
05/17/2026 07 PM PDT 4.14 - Not Applicable
05/17/2026 08 PM PDT 3.45 - Not Applicable
05/17/2026 09 PM PDT 3.07 - Not Applicable
05/17/2026 10 PM PDT 3.21 + Not Applicable
05/17/2026 11 PM PDT 3.99 + Not Applicable
05/18/2026 12 AM PDT 5.03 + Not Applicable
05/18/2026 01 AM PDT 5.89 + Not Applicable
05/18/2026 02 AM PDT 6.41 + Not Applicable
05/18/2026 03 AM PDT 6.65 + Not Applicable
05/18/2026 04 AM PDT 6.57 - Not Applicable
05/18/2026 05 AM PDT 5.80 - Not Applicable
05/18/2026 06 AM PDT 4.64 - Not Applicable
05/18/2026 07 AM PDT 3.60 - Not Applicable
05/18/2026 08 AM PDT 2.79 - Not Applicable
05/18/2026 09 AM PDT 2.08 - Not Applicable
05/18/2026 10 AM PDT 1.40 - Not Applicable
05/18/2026 11 AM PDT 0.87 - Not Applicable
05/18/2026 12 PM PDT 0.61 - Not Applicable
05/18/2026 01 PM PDT 1.07 + Not Applicable
05/18/2026 02 PM PDT 2.49 + Not Applicable
05/18/2026 03 PM PDT 3.70 + Not Applicable
05/18/2026 04 PM PDT 4.39 + Not Applicable
05/18/2026 05 PM PDT 4.77 + Not Applicable
05/18/2026 06 PM PDT 4.93 + Not Applicable
05/18/2026 07 PM PDT 4.81 - Not Applicable
05/18/2026 08 PM PDT 4.35 - Not Applicable
05/18/2026 09 PM PDT 3.80 - Not Applicable
05/18/2026 10 PM PDT 3.52 - Not Applicable
05/18/2026 11 PM PDT 3.77 + Not Applicable
05/19/2026 12 AM PDT 4.51 + Not Applicable
05/19/2026 01 AM PDT 5.40 + Not Applicable
05/19/2026 02 AM PDT 6.08 + Not Applicable
05/19/2026 03 AM PDT 6.59 + Not Applicable
05/19/2026 04 AM PDT 6.75 + Not Applicable
05/19/2026 05 AM PDT 6.57 - Not Applicable
05/19/2026 06 AM PDT 5.75 - Not Applicable
05/19/2026 07 AM PDT 4.64 - Not Applicable
05/19/2026 08 AM PDT 3.68 - Not Applicable
05/19/2026 09 AM PDT 2.89 - Not Applicable
05/19/2026 10 AM PDT 2.21 - Not Applicable
05/19/2026 11 AM PDT 1.62 - Not Applicable
05/19/2026 12 PM PDT 1.10 - Not Applicable
05/19/2026 01 PM PDT 0.94 - Not Applicable
05/19/2026 02 PM PDT 1.64 + Not Applicable
05/19/2026 03 PM PDT 3.02 + Not Applicable
05/19/2026 04 PM PDT 4.07 + Not Applicable
05/19/2026 05 PM PDT 4.68 + Not Applicable
05/19/2026 06 PM PDT 5.05 + Not Applicable
05/19/2026 07 PM PDT 5.18 + Not Applicable
05/19/2026 08 PM PDT 5.01 - Not Applicable
05/19/2026 09 PM PDT 4.56 - Not Applicable
05/19/2026 10 PM PDT 4.01 - Not Applicable
05/19/2026 11 PM PDT 3.74 - Not Applicable
05/20/2026 12 AM PDT 3.95 + Not Applicable
05/20/2026 01 AM PDT 4.63 + Not Applicable
05/20/2026 02 AM PDT 5.44 + Not Applicable
05/20/2026 03 AM PDT 6.11 + Not Applicable
05/20/2026 04 AM PDT 6.58 + Not Applicable
05/20/2026 05 AM PDT 6.75 + Not Applicable
05/20/2026 06 AM PDT 6.50 - Not Applicable
05/20/2026 07 AM PDT 5.68 - Not Applicable
05/20/2026 08 AM PDT 4.61 - Not Applicable
05/20/2026 09 AM PDT 3.69 - Not Applicable
05/20/2026 10 AM PDT 2.99 - Not Applicable
05/20/2026 11 AM PDT 2.32 - Not Applicable
05/20/2026 12 PM PDT 1.71 - Not Applicable
05/20/2026 01 PM PDT 1.26 - Not Applicable
05/20/2026 02 PM PDT 1.16 - Not Applicable
05/20/2026 03 PM PDT 1.89 + Not Applicable
05/20/2026 04 PM PDT 3.30 + Not Applicable
05/20/2026 05 PM PDT 4.25 + Not Applicable
05/20/2026 06 PM PDT 4.84 + Not Applicable
05/20/2026 07 PM PDT 5.18 + Not Applicable
05/20/2026 08 PM PDT 5.32 + Not Applicable
05/20/2026 09 PM PDT 5.20 - Not Applicable
05/20/2026 10 PM PDT 4.74 - Not Applicable
05/20/2026 11 PM PDT 4.16 - Not Applicable
05/21/2026 12 AM PDT 3.90 - Not Applicable
05/21/2026 01 AM PDT 4.05 + Not Applicable
05/21/2026 02 AM PDT 4.62 + Not Applicable
05/21/2026 03 AM PDT 5.35 + Not Applicable
05/21/2026 04 AM PDT 5.97 + Not Applicable
05/21/2026 05 AM PDT 6.39 + Not Applicable
05/21/2026 06 AM PDT 6.55 + Not Applicable
05/21/2026 07 AM PDT 6.26 - Not Applicable
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Trend Forecast Status
# ------------------------------------------------------------------
05/21/2026 08 AM PDT 5.62 Not Applicable
05/21/2026 09 AM PDT 4.74 - Not Applicable
05/21/2026 10 AM PDT 3.69 - Not Applicable
05/21/2026 11 AM PDT 2.65 - Not Applicable
05/21/2026 12 PM PDT 1.75 - Not Applicable
05/21/2026 01 PM PDT 1.23 - Not Applicable
05/21/2026 02 PM PDT 1.07 - Not Applicable
05/21/2026 03 PM PDT 1.31 + Not Applicable
05/21/2026 04 PM PDT 1.90 + Not Applicable
05/21/2026 05 PM PDT 2.73 + Not Applicable
05/21/2026 06 PM PDT 3.62 + Not Applicable
05/21/2026 07 PM PDT 4.41 + Not Applicable
05/21/2026 08 PM PDT 4.95 + Not Applicable
05/21/2026 09 PM PDT 5.13 + Not Applicable
05/21/2026 10 PM PDT 4.94 - Not Applicable
05/21/2026 11 PM PDT 4.49 - Not Applicable
05/22/2026 12 AM PDT 3.94 - Not Applicable
05/22/2026 01 AM PDT 3.52 - Not Applicable
05/22/2026 02 AM PDT 3.40 - Not Applicable
05/22/2026 03 AM PDT 3.65 + Not Applicable
05/22/2026 04 AM PDT 4.19 + Not Applicable
05/22/2026 05 AM PDT 4.82 + Not Applicable
05/22/2026 06 AM PDT 5.32 + Not Applicable
05/22/2026 07 AM PDT 5.50 + Not Applicable
05/22/2026 08 AM PDT 5.33 - Not Applicable
05/22/2026 09 AM PDT 4.84 - Not Applicable
05/22/2026 10 AM PDT 4.14 - Not Applicable
05/22/2026 11 AM PDT 3.30 - Not Applicable
05/22/2026 12 PM PDT 2.46 - Not Applicable
05/22/2026 01 PM PDT 1.75 - Not Applicable
05/22/2026 02 PM PDT 1.30 - Not Applicable
05/22/2026 03 PM PDT 1.17 - Not Applicable
05/22/2026 04 PM PDT 1.42 + Not Applicable
05/22/2026 05 PM PDT 2.01 + Not Applicable
05/22/2026 06 PM PDT 2.83 + Not Applicable
05/22/2026 07 PM PDT 3.73 + Not Applicable
05/22/2026 08 PM PDT 4.53 + Not Applicable
05/22/2026 09 PM PDT 5.07 + Not Applicable
05/22/2026 10 PM PDT 5.23 + Not Applicable
05/22/2026 11 PM PDT 4.98 - Not Applicable
05/23/2026 12 AM PDT 4.43 - Not Applicable
05/23/2026 01 AM PDT 3.77 - Not Applicable
05/23/2026 02 AM PDT 3.25 - Not Applicable
05/23/2026 03 AM PDT 3.05 - Not Applicable
05/23/2026 04 AM PDT 3.18 + Not Applicable
05/23/2026 05 AM PDT 3.56 + Not Applicable
05/23/2026 06 AM PDT 4.06 + Not Applicable
05/23/2026 07 AM PDT 4.57 + Not Applicable
05/23/2026 08 AM PDT 4.92 + Not Applicable
05/23/2026 09 AM PDT 5.02 + Not Applicable
05/23/2026 10 AM PDT 4.79 - Not Applicable
05/23/2026 11 AM PDT 4.27 - Not Applicable
05/23/2026 12 PM PDT 3.52 - Not Applicable
05/23/2026 01 PM PDT 2.69 - Not Applicable
05/23/2026 02 PM PDT 1.96 - Not Applicable
05/23/2026 03 PM PDT 1.47 - Not Applicable
05/23/2026 04 PM PDT 1.32 - Not Applicable
05/23/2026 05 PM PDT 1.56 + Not Applicable
05/23/2026 06 PM PDT 2.15 + Not Applicable
05/23/2026 07 PM PDT 2.98 + Not Applicable
05/23/2026 08 PM PDT 3.88 + Not Applicable
05/23/2026 09 PM PDT 4.69 + Not Applicable
05/23/2026 10 PM PDT 5.23 + Not Applicable
05/23/2026 11 PM PDT 5.41 + Not Applicable
05/24/2026 12 AM PDT 5.20 - Not Applicable
05/24/2026 01 AM PDT 4.67 - Not Applicable
05/24/2026 02 AM PDT 3.97 - Not Applicable
05/24/2026 03 AM PDT 3.27 - Not Applicable
05/24/2026 04 AM PDT 2.77 - Not Applicable
05/24/2026 05 AM PDT 2.63 - Not Applicable
05/24/2026 06 AM PDT 2.86 + Not Applicable
05/24/2026 07 AM PDT 3.38 + Not Applicable
05/24/2026 08 AM PDT 4.00 + Not Applicable
05/24/2026 09 AM PDT 4.48 + Not Applicable
05/24/2026 10 AM PDT 4.66 + Not Applicable
05/24/2026 11 AM PDT 4.49 - Not Applicable
05/24/2026 12 PM PDT 4.04 - Not Applicable
05/24/2026 01 PM PDT 3.40 - Not Applicable
05/24/2026 02 PM PDT 2.69 - Not Applicable
05/24/2026 03 PM PDT 2.06 - Not Applicable
05/24/2026 04 PM PDT 1.64 - Not Applicable
05/24/2026 05 PM PDT 1.52 - Not Applicable
05/24/2026 06 PM PDT 1.76 + Not Applicable
05/24/2026 07 PM PDT 2.36 + Not Applicable
05/24/2026 08 PM PDT 3.18 + Not Applicable
05/24/2026 09 PM PDT 4.08 + Not Applicable
05/24/2026 10 PM PDT 4.87 + Not Applicable
05/24/2026 11 PM PDT 5.42 + Not Applicable
05/25/2026 12 AM PDT 5.58 + Not Applicable
05/25/2026 01 AM PDT 5.31 - Not Applicable
05/25/2026 02 AM PDT 4.67 - Not Applicable
05/25/2026 03 AM PDT 3.81 - Not Applicable
05/25/2026 04 AM PDT 2.96 - Not Applicable
05/25/2026 05 AM PDT 2.37 - Not Applicable
05/25/2026 06 AM PDT 2.18 - Not Applicable
05/25/2026 07 AM PDT 2.44 + Not Applicable
05/25/2026 08 AM PDT 3.02 + Not Applicable
05/25/2026 09 AM PDT 3.71 + Not Applicable
05/25/2026 10 AM PDT 4.25 + Not Applicable
05/25/2026 11 AM PDT 4.46 + Not Applicable
05/25/2026 12 PM PDT 4.33 - Not Applicable
05/25/2026 01 PM PDT 3.95 - Not Applicable
05/25/2026 02 PM PDT 3.40 - Not Applicable
05/25/2026 03 PM PDT 2.78 - Not Applicable
05/25/2026 04 PM PDT 2.24 - Not Applicable
05/25/2026 05 PM PDT 1.87 - Not Applicable
05/25/2026 06 PM PDT 1.80 - Not Applicable
05/25/2026 07 PM PDT 2.16 + Not Applicable
05/25/2026 08 PM PDT 2.91 + Not Applicable
05/25/2026 09 PM PDT 3.88 + Not Applicable
05/25/2026 10 PM PDT 4.83 + Not Applicable
05/25/2026 11 PM PDT 5.51 + Not Applicable
05/26/2026 12 AM PDT 5.75 + Not Applicable
05/26/2026 01 AM PDT 5.55 - Not Applicable
05/26/2026 02 AM PDT 4.96 - Not Applicable
05/26/2026 03 AM PDT 4.15 - Not Applicable
05/26/2026 04 AM PDT 3.24 - Not Applicable
05/26/2026 05 AM PDT 2.43 - 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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