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SACRAMENTO RIVER DELTA - ANTIOCH (ATIC1)
| Latitude: 38.02º N | Longitude: 121.80º W | Elevation: 10 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 - Antioch (ATIC1)
#
# File Generation Time: 05/21/2026 at 08:00 AM PDT
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 05/17/2026 at 03:00 AM PDT
# Maximum Observed Stage: 6.81 Feet
#
# Earliest Date & Time of Maximum Forecast: 05/21/2026 at 08:00 AM PDT
# Maximum Forecast Stage: 5.77 Feet
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Trend Observed Status
# ------------------------------------------------------------------
05/16/2026 08 AM PDT 3.17 Not Applicable
05/16/2026 09 AM PDT 2.60 - Not Applicable
05/16/2026 10 AM PDT 2.09 - Not Applicable
05/16/2026 11 AM PDT 1.91 - Not Applicable
05/16/2026 12 PM PDT 2.52 + Not Applicable
05/16/2026 01 PM PDT 3.67 + Not Applicable
05/16/2026 02 PM PDT 4.46 + Not Applicable
05/16/2026 03 PM PDT 4.87 + Not Applicable
05/16/2026 04 PM PDT 5.11 + Not Applicable
05/16/2026 05 PM PDT 5.17 + Not Applicable
05/16/2026 06 PM PDT 4.93 - Not Applicable
05/16/2026 07 PM PDT 4.34 - Not Applicable
05/16/2026 08 PM PDT 3.85 - Not Applicable
05/16/2026 09 PM PDT 3.62 - Not Applicable
05/16/2026 10 PM PDT 3.87 + Not Applicable
05/16/2026 11 PM PDT 4.70 + Not Applicable
05/17/2026 12 AM PDT 5.55 + Not Applicable
05/17/2026 01 AM PDT 6.16 + Not Applicable
05/17/2026 02 AM PDT 6.56 + Not Applicable
05/17/2026 03 AM PDT 6.81 + Not Applicable
05/17/2026 04 AM PDT 6.70 - Not Applicable
05/17/2026 05 AM PDT 5.97 - Not Applicable
05/17/2026 06 AM PDT 4.99 - Not Applicable
05/17/2026 07 AM PDT 4.23 - Not Applicable
05/17/2026 08 AM PDT 3.58 - Not Applicable
05/17/2026 09 AM PDT 2.94 - Not Applicable
05/17/2026 10 AM PDT 2.34 - Not Applicable
05/17/2026 11 AM PDT 1.87 - Not Applicable
05/17/2026 12 PM PDT 1.73 - Not Applicable
05/17/2026 01 PM PDT 2.50 + Not Applicable
05/17/2026 02 PM PDT 3.71 + Not Applicable
05/17/2026 03 PM PDT 4.53 + Not Applicable
05/17/2026 04 PM PDT 4.88 + Not Applicable
05/17/2026 05 PM PDT 5.17 + Not Applicable
05/17/2026 06 PM PDT 5.14 - Not Applicable
05/17/2026 07 PM PDT 4.84 - Not Applicable
05/17/2026 08 PM PDT 4.19 - Not Applicable
05/17/2026 09 PM PDT 3.62 - Not Applicable
05/17/2026 10 PM PDT 3.48 - Not Applicable
05/17/2026 11 PM PDT 3.86 + Not Applicable
05/18/2026 12 AM PDT 4.76 + Not Applicable
05/18/2026 01 AM PDT 5.59 + Not Applicable
05/18/2026 02 AM PDT 6.17 + Not Applicable
05/18/2026 03 AM PDT 6.55 + Not Applicable
05/18/2026 04 AM PDT 6.72 + Not Applicable
05/18/2026 05 AM PDT 6.45 - Not Applicable
05/18/2026 06 AM PDT 5.58 - Not Applicable
05/18/2026 07 AM PDT 4.66 - Not Applicable
05/18/2026 08 AM PDT 3.87 - Not Applicable
05/18/2026 09 AM PDT 3.28 - Not Applicable
05/18/2026 10 AM PDT 2.64 - Not Applicable
05/18/2026 11 AM PDT 1.98 - Not Applicable
05/18/2026 12 PM PDT 1.46 - Not Applicable
05/18/2026 01 PM PDT 1.41 - Not Applicable
05/18/2026 02 PM PDT 2.22 + Not Applicable
05/18/2026 03 PM PDT 3.47 + Not Applicable
05/18/2026 04 PM PDT 4.18 + Not Applicable
05/18/2026 05 PM PDT 4.61 + Not Applicable
05/18/2026 06 PM PDT 4.89 + Not Applicable
05/18/2026 07 PM PDT 4.99 + Not Applicable
05/18/2026 08 PM PDT 4.80 - Not Applicable
05/18/2026 09 PM PDT 4.33 - Not Applicable
05/18/2026 10 PM PDT 3.95 - Not Applicable
05/18/2026 11 PM PDT 3.91 - Not Applicable
05/19/2026 12 AM PDT 4.39 + Not Applicable
05/19/2026 01 AM PDT 5.16 + Not Applicable
05/19/2026 02 AM PDT 5.83 + Not Applicable
05/19/2026 03 AM PDT 6.36 + Not Applicable
05/19/2026 04 AM PDT 6.71 + Not Applicable
05/19/2026 05 AM PDT 6.80 + Not Applicable
05/19/2026 06 AM PDT 6.44 - Not Applicable
05/19/2026 07 AM PDT 5.51 - Not Applicable
05/19/2026 08 AM PDT 4.61 - Not Applicable
05/19/2026 09 AM PDT 3.87 - Not Applicable
05/19/2026 10 AM PDT 3.25 - Not Applicable
05/19/2026 11 AM PDT 2.61 - Not Applicable
05/19/2026 12 PM PDT 2.01 - Not Applicable
05/19/2026 01 PM PDT 1.61 - Not Applicable
05/19/2026 02 PM PDT 1.69 + Not Applicable
05/19/2026 03 PM PDT 2.69 + Not Applicable
05/19/2026 04 PM PDT 3.81 + Not Applicable
05/19/2026 05 PM PDT 4.46 + Not Applicable
05/19/2026 06 PM PDT 4.89 + Not Applicable
05/19/2026 07 PM PDT 5.15 + Not Applicable
05/19/2026 08 PM PDT 5.25 + Not Applicable
05/19/2026 09 PM PDT 5.03 - Not Applicable
05/19/2026 10 PM PDT 4.57 - Not Applicable
05/19/2026 11 PM PDT 4.17 - Not Applicable
05/20/2026 12 AM PDT 4.13 - Not Applicable
05/20/2026 01 AM PDT 4.54 + Not Applicable
05/20/2026 02 AM PDT 5.26 + Not Applicable
05/20/2026 03 AM PDT 5.90 + Not Applicable
05/20/2026 04 AM PDT 6.40 + Not Applicable
05/20/2026 05 AM PDT 6.79 + Not Applicable
05/20/2026 06 AM PDT 6.80 + Not Applicable
05/20/2026 07 AM PDT 6.39 - Not Applicable
05/20/2026 08 AM PDT 5.44 - Not Applicable
05/20/2026 09 AM PDT 4.61 - Not Applicable
05/20/2026 10 AM PDT 3.91 - Not Applicable
05/20/2026 11 AM PDT 3.29 - Not Applicable
05/20/2026 12 PM PDT 2.68 - Not Applicable
05/20/2026 01 PM PDT 2.11 - Not Applicable
05/20/2026 02 PM PDT 1.74 - Not Applicable
05/20/2026 03 PM PDT 1.93 + Not Applicable
05/20/2026 04 PM PDT 3.00 + Not Applicable
05/20/2026 05 PM PDT 4.08 + Not Applicable
05/20/2026 06 PM PDT 4.62 + Not Applicable
05/20/2026 07 PM PDT 5.03 + Not Applicable
05/20/2026 08 PM PDT 5.30 + Not Applicable
05/20/2026 09 PM PDT 5.40 + Not Applicable
05/20/2026 10 PM PDT 5.23 - Not Applicable
05/20/2026 11 PM PDT 4.75 - Not Applicable
05/21/2026 12 AM PDT 4.36 - Not Applicable
05/21/2026 01 AM PDT 4.30 - Not Applicable
05/21/2026 02 AM PDT 4.63 + Not Applicable
05/21/2026 03 AM PDT 5.26 + Not Applicable
05/21/2026 04 AM PDT 5.83 + Not Applicable
05/21/2026 05 AM PDT 6.29 + Not Applicable
05/21/2026 06 AM PDT 6.61 + Not Applicable
05/21/2026 07 AM PDT 6.34 - Not Applicable
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Trend Forecast Status
# ------------------------------------------------------------------
05/21/2026 08 AM PDT 5.77 Not Applicable
05/21/2026 09 AM PDT 4.99 - Not Applicable
05/21/2026 10 AM PDT 4.07 - Not Applicable
05/21/2026 11 AM PDT 3.16 - Not Applicable
05/21/2026 12 PM PDT 2.37 - Not Applicable
05/21/2026 01 PM PDT 1.89 - Not Applicable
05/21/2026 02 PM PDT 1.73 - Not Applicable
05/21/2026 03 PM PDT 1.94 + Not Applicable
05/21/2026 04 PM PDT 2.45 + Not Applicable
05/21/2026 05 PM PDT 3.17 + Not Applicable
05/21/2026 06 PM PDT 3.93 + Not Applicable
05/21/2026 07 PM PDT 4.61 + Not Applicable
05/21/2026 08 PM PDT 5.09 + Not Applicable
05/21/2026 09 PM PDT 5.25 + Not Applicable
05/21/2026 10 PM PDT 5.10 - Not Applicable
05/21/2026 11 PM PDT 4.70 - Not Applicable
05/22/2026 12 AM PDT 4.23 - Not Applicable
05/22/2026 01 AM PDT 3.86 - Not Applicable
05/22/2026 02 AM PDT 3.74 - Not Applicable
05/22/2026 03 AM PDT 3.96 + Not Applicable
05/22/2026 04 AM PDT 4.42 + Not Applicable
05/22/2026 05 AM PDT 4.99 + Not Applicable
05/22/2026 06 AM PDT 5.39 + Not Applicable
05/22/2026 07 AM PDT 5.54 + Not Applicable
05/22/2026 08 AM PDT 5.41 - Not Applicable
05/22/2026 09 AM PDT 5.02 - Not Applicable
05/22/2026 10 AM PDT 4.40 - Not Applicable
05/22/2026 11 AM PDT 3.67 - Not Applicable
05/22/2026 12 PM PDT 2.96 - Not Applicable
05/22/2026 01 PM PDT 2.37 - Not Applicable
05/22/2026 02 PM PDT 1.95 - Not Applicable
05/22/2026 03 PM PDT 1.82 - Not Applicable
05/22/2026 04 PM PDT 2.03 + Not Applicable
05/22/2026 05 PM PDT 2.52 + Not Applicable
05/22/2026 06 PM PDT 3.25 + Not Applicable
05/22/2026 07 PM PDT 4.03 + Not Applicable
05/22/2026 08 PM PDT 4.71 + Not Applicable
05/22/2026 09 PM PDT 5.18 + Not Applicable
05/22/2026 10 PM PDT 5.32 + Not Applicable
05/22/2026 11 PM PDT 5.13 - Not Applicable
05/23/2026 12 AM PDT 4.64 - Not Applicable
05/23/2026 01 AM PDT 4.08 - Not Applicable
05/23/2026 02 AM PDT 3.60 - Not Applicable
05/23/2026 03 AM PDT 3.44 - Not Applicable
05/23/2026 04 AM PDT 3.53 + Not Applicable
05/23/2026 05 AM PDT 3.88 + Not Applicable
05/23/2026 06 AM PDT 4.32 + Not Applicable
05/23/2026 07 AM PDT 4.76 + Not Applicable
05/23/2026 08 AM PDT 5.07 + Not Applicable
05/23/2026 09 AM PDT 5.15 + Not Applicable
05/23/2026 10 AM PDT 4.97 - Not Applicable
05/23/2026 11 AM PDT 4.50 - Not Applicable
05/23/2026 12 PM PDT 3.86 - Not Applicable
05/23/2026 01 PM PDT 3.17 - Not Applicable
05/23/2026 02 PM PDT 2.51 - Not Applicable
05/23/2026 03 PM PDT 2.10 - Not Applicable
05/23/2026 04 PM PDT 1.95 - Not Applicable
05/23/2026 05 PM PDT 2.16 + Not Applicable
05/23/2026 06 PM PDT 2.64 + Not Applicable
05/23/2026 07 PM PDT 3.37 + Not Applicable
05/23/2026 08 PM PDT 4.16 + Not Applicable
05/23/2026 09 PM PDT 4.86 + Not Applicable
05/23/2026 10 PM PDT 5.31 + Not Applicable
05/23/2026 11 PM PDT 5.46 + Not Applicable
05/24/2026 12 AM PDT 5.30 - Not Applicable
05/24/2026 01 AM PDT 4.87 - Not Applicable
05/24/2026 02 AM PDT 4.25 - Not Applicable
05/24/2026 03 AM PDT 3.63 - Not Applicable
05/24/2026 04 AM PDT 3.23 - Not Applicable
05/24/2026 05 AM PDT 3.09 - Not Applicable
05/24/2026 06 AM PDT 3.28 + Not Applicable
05/24/2026 07 AM PDT 3.71 + Not Applicable
05/24/2026 08 AM PDT 4.26 + Not Applicable
05/24/2026 09 AM PDT 4.67 + Not Applicable
05/24/2026 10 AM PDT 4.84 + Not Applicable
05/24/2026 11 AM PDT 4.69 - Not Applicable
05/24/2026 12 PM PDT 4.31 - Not Applicable
05/24/2026 01 PM PDT 3.75 - Not Applicable
05/24/2026 02 PM PDT 3.16 - Not Applicable
05/24/2026 03 PM PDT 2.58 - Not Applicable
05/24/2026 04 PM PDT 2.25 - Not Applicable
05/24/2026 05 PM PDT 2.13 - Not Applicable
05/24/2026 06 PM PDT 2.35 + Not Applicable
05/24/2026 07 PM PDT 2.83 + Not Applicable
05/24/2026 08 PM PDT 3.52 + Not Applicable
05/24/2026 09 PM PDT 4.32 + Not Applicable
05/24/2026 10 PM PDT 5.02 + Not Applicable
05/24/2026 11 PM PDT 5.46 + Not Applicable
05/25/2026 12 AM PDT 5.61 + Not Applicable
05/25/2026 01 AM PDT 5.39 - Not Applicable
05/25/2026 02 AM PDT 4.86 - Not Applicable
05/25/2026 03 AM PDT 4.12 - Not Applicable
05/25/2026 04 AM PDT 3.38 - Not Applicable
05/25/2026 05 AM PDT 2.86 - Not Applicable
05/25/2026 06 AM PDT 2.67 - Not Applicable
05/25/2026 07 AM PDT 2.90 + Not Applicable
05/25/2026 08 AM PDT 3.40 + Not Applicable
05/25/2026 09 AM PDT 4.01 + Not Applicable
05/25/2026 10 AM PDT 4.46 + Not Applicable
05/25/2026 11 AM PDT 4.65 + Not Applicable
05/25/2026 12 PM PDT 4.55 - Not Applicable
05/25/2026 01 PM PDT 4.23 - Not Applicable
05/25/2026 02 PM PDT 3.75 - Not Applicable
05/25/2026 03 PM PDT 3.24 - Not Applicable
05/25/2026 04 PM PDT 2.75 - Not Applicable
05/25/2026 05 PM PDT 2.44 - Not Applicable
05/25/2026 06 PM PDT 2.38 - Not Applicable
05/25/2026 07 PM PDT 2.65 + Not Applicable
05/25/2026 08 PM PDT 3.31 + Not Applicable
05/25/2026 09 PM PDT 4.16 + Not Applicable
05/25/2026 10 PM PDT 4.98 + Not Applicable
05/25/2026 11 PM PDT 5.54 + Not Applicable
05/26/2026 12 AM PDT 5.76 + Not Applicable
05/26/2026 01 AM PDT 5.58 - Not Applicable
05/26/2026 02 AM PDT 5.11 - Not Applicable
05/26/2026 03 AM PDT 4.40 - Not Applicable
05/26/2026 04 AM PDT 3.61 - Not Applicable
05/26/2026 05 AM PDT 2.93 - 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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