National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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ALAMEDA CREEK - NILES (NILC1)
Latitude: 37.59º NLongitude: 121.96º WElevation: 86 Feet
Location: Alameda County in CaliforniaBulletin Group: Central CoastRiver Group: South Bay
Issuance Time: Dec 26 2025 at 8:08 AM PSTNext Issuance: Dec 26 2025 at 3:00 PM PST
Action/Monitor: N/A Minor Flood: 9.0 FeetModerate Flood: 10.5 FeetMajor Flood: N/A


# Tabular Observed and Forecast Hydrograph Information
#
# Location: Alameda Creek - Niles (NILC1)
#
# File Generation Time:  12/26/2025 at 08:10 AM PST
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  12/26/2025 at 12:00 AM PST
# Maximum Observed Stage:                       5.68 Feet
# Maximum Observed Flow:                        1588 cfs
#
# Earliest Date & Time of Maximum Forecast:     12/26/2025 at 08:00 AM PST
# Maximum Forecast Stage:                       4.55 Feet
# Maximum Forecast Flow:                        630 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  12/21/2025 08 AM PST            2.88             23                        Normal
  12/21/2025 09 AM PST            2.88             23         0              Normal
  12/21/2025 10 AM PST            2.87             23         -              Normal
  12/21/2025 11 AM PST            2.87             23         0              Normal
  12/21/2025 12 PM PST            2.87             23         0              Normal
  12/21/2025 01 PM PST            2.87             23         0              Normal
  12/21/2025 02 PM PST            2.86             22         -              Normal
  12/21/2025 03 PM PST            2.91             26         +              Normal
  12/21/2025 04 PM PST            2.86             22         -              Normal
  12/21/2025 05 PM PST            2.86             22         0              Normal
  12/21/2025 06 PM PST            2.85             21         -              Normal
  12/21/2025 07 PM PST            2.85             21         0              Normal
  12/21/2025 08 PM PST            2.84             20         -              Normal
  12/21/2025 09 PM PST            2.84             20         0              Normal
  12/21/2025 10 PM PST            2.85             21         +              Normal
  12/21/2025 11 PM PST            2.87             23         +              Normal
  12/22/2025 12 AM PST            2.91             26         +              Normal
  12/22/2025 01 AM PST            2.94             29         +              Normal
  12/22/2025 02 AM PST            2.96             31         +              Normal
  12/22/2025 03 AM PST            2.97             32         +              Normal
  12/22/2025 04 AM PST            2.98             33         +              Normal
  12/22/2025 05 AM PST            2.97             32         -              Normal
  12/22/2025 06 AM PST            2.97             32         0              Normal
  12/22/2025 07 AM PST            2.96             31         -              Normal
  12/22/2025 08 AM PST            2.96             31         0              Normal
  12/22/2025 09 AM PST            2.95             30         -              Normal
  12/22/2025 10 AM PST            2.95             30         0              Normal
  12/22/2025 11 AM PST            2.95             30         0              Normal
  12/22/2025 12 PM PST            2.94             29         -              Normal
  12/22/2025 01 PM PST            2.95             30         +              Normal
  12/22/2025 02 PM PST            2.98             33         +              Normal
  12/22/2025 03 PM PST            2.99             34         +              Normal
  12/22/2025 04 PM PST            2.99             34         0              Normal
  12/22/2025 05 PM PST            2.98             33         -              Normal
  12/22/2025 06 PM PST            2.98             33         0              Normal
  12/22/2025 07 PM PST            3.58            147         +              Normal
  12/22/2025 08 PM PST            3.56            141         -              Normal
  12/22/2025 09 PM PST            3.51            126         -              Normal
  12/22/2025 10 PM PST            3.48            118         -              Normal
  12/22/2025 11 PM PST            3.48            118         0              Normal
  12/23/2025 12 AM PST            3.47            115         -              Normal
  12/23/2025 01 AM PST            3.45            110         -              Normal
  12/23/2025 02 AM PST            3.42            103         -              Normal
  12/23/2025 03 AM PST            3.38             94         -              Normal
  12/23/2025 04 AM PST            3.34             86         -              Normal
  12/23/2025 05 AM PST            3.31             80         -              Normal
  12/23/2025 06 AM PST            3.27             73         -              Normal
  12/23/2025 07 AM PST            3.24             68         -              Normal
  12/23/2025 08 AM PST            3.21             63         -              Normal
  12/23/2025 09 AM PST            3.19             60         -              Normal
  12/23/2025 10 AM PST            3.16             55         -              Normal
  12/23/2025 11 AM PST            3.14             52         -              Normal
  12/23/2025 12 PM PST            3.13             51         -              Normal
  12/23/2025 01 PM PST            3.12             50         -              Normal
  12/23/2025 02 PM PST            3.11             48         -              Normal
  12/23/2025 03 PM PST            3.10             47         -              Normal
  12/23/2025 04 PM PST            3.09             45         -              Normal
  12/23/2025 05 PM PST            3.08             44         -              Normal
  12/23/2025 06 PM PST            3.06             42         -              Normal
  12/23/2025 07 PM PST            3.04             39         -              Normal
  12/23/2025 08 PM PST            3.02             37         -              Normal
  12/23/2025 09 PM PST            3.01             36         -              Normal
  12/23/2025 10 PM PST            3.00             35         -              Normal
  12/23/2025 11 PM PST            2.99             34         -              Normal
  12/24/2025 12 AM PST            2.98             33         -              Normal
  12/24/2025 01 AM PST            2.96             31         -              Normal
  12/24/2025 02 AM PST            2.97             32         +              Normal
  12/24/2025 03 AM PST            2.96             31         -              Normal
  12/24/2025 04 AM PST            2.96             31         0              Normal
  12/24/2025 05 AM PST            2.98             33         +              Normal
  12/24/2025 06 AM PST            2.98             33         0              Normal
  12/24/2025 07 AM PST            2.98             33         0              Normal
  12/24/2025 08 AM PST            2.97             32         -              Normal
  12/24/2025 09 AM PST            2.96             31         -              Normal
  12/24/2025 10 AM PST            2.96             31         0              Normal
  12/24/2025 11 AM PST            4.85            845         +              Normal
  12/24/2025 12 PM PST            4.53            617         -              Normal
  12/24/2025 01 PM PST            4.25            447         -              Normal
  12/24/2025 02 PM PST            4.11            372         -              Normal
  12/24/2025 03 PM PST            4.03            332         -              Normal
  12/24/2025 04 PM PST            3.96            298         -              Normal
  12/24/2025 05 PM PST            3.92            279         -              Normal
  12/24/2025 06 PM PST            3.87            257         -              Normal
  12/24/2025 07 PM PST            3.81            231         -              Normal
  12/24/2025 08 PM PST            3.73            199         -              Normal
  12/24/2025 09 PM PST            3.66            174         -              Normal
  12/24/2025 10 PM PST            3.59            150         -              Normal
  12/24/2025 11 PM PST            3.54            135         -              Normal
  12/25/2025 12 AM PST            3.50            124         -              Normal
  12/25/2025 01 AM PST            3.46            113         -              Normal
  12/25/2025 02 AM PST            3.43            105         -              Normal
  12/25/2025 03 AM PST            3.40             98         -              Normal
  12/25/2025 04 AM PST            3.37             92         -              Normal
  12/25/2025 05 AM PST            3.36             90         -              Normal
  12/25/2025 06 AM PST            3.35             88         -              Normal
  12/25/2025 07 AM PST            3.36             90         +              Normal
  12/25/2025 08 AM PST            3.37             92         +              Normal
  12/25/2025 09 AM PST            3.42            103         +              Normal
  12/25/2025 10 AM PST            4.20            419         +              Normal
  12/25/2025 11 AM PST            4.31            481         +              Normal
  12/25/2025 12 PM PST            4.20            419         -              Normal
  12/25/2025 01 PM PST            4.07            352         -              Normal
  12/25/2025 02 PM PST            3.98            307         -              Normal
  12/25/2025 03 PM PST            3.93            284         -              Normal
  12/25/2025 04 PM PST            3.89            266         -              Normal
  12/25/2025 05 PM PST            3.86            252         -              Normal
  12/25/2025 06 PM PST            3.83            239         -              Normal
  12/25/2025 07 PM PST            3.88            261         +              Normal
  12/25/2025 08 PM PST            3.90            270         +              Normal
  12/25/2025 09 PM PST            3.90            270         0              Normal
  12/25/2025 10 PM PST            3.93            284         +              Normal
  12/25/2025 11 PM PST            4.83            830         +              Normal
  12/26/2025 12 AM PST            5.68           1588         +              Normal
  12/26/2025 01 AM PST            5.64           1549         -              Normal
  12/26/2025 02 AM PST            5.32           1242         -              Normal
  12/26/2025 03 AM PST            4.99            955         -              Normal
  12/26/2025 04 AM PST            4.83            830         -              Normal
  12/26/2025 05 AM PST            4.73            755         -              Normal
  12/26/2025 06 AM PST            4.62            678         -              Normal
  12/26/2025 07 AM PST            4.59            657         -              Normal
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  12/26/2025 08 AM PST            4.55            630                        Normal
  12/26/2025 09 AM PST            4.51            604         -              Normal
  12/26/2025 10 AM PST            4.48            585         -              Normal
  12/26/2025 11 AM PST            4.42            547         -              Normal
  12/26/2025 12 PM PST            4.36            510         -              Normal
  12/26/2025 01 PM PST            4.31            481         -              Normal
  12/26/2025 02 PM PST            4.26            452         -              Normal
  12/26/2025 03 PM PST            4.21            424         -              Normal
  12/26/2025 04 PM PST            4.17            403         -              Normal
  12/26/2025 05 PM PST            4.12            377         -              Normal
  12/26/2025 06 PM PST            4.07            352         -              Normal
  12/26/2025 07 PM PST            4.02            327         -              Normal
  12/26/2025 08 PM PST            3.99            312         -              Normal
  12/26/2025 09 PM PST            3.99            312         0              Normal
  12/26/2025 10 PM PST            4.04            337         +              Normal
  12/26/2025 11 PM PST            4.11            372         +              Normal
  12/27/2025 12 AM PST            4.17            403         +              Normal
  12/27/2025 01 AM PST            4.21            424         +              Normal
  12/27/2025 02 AM PST            4.21            424         0              Normal
  12/27/2025 03 AM PST            4.18            408         -              Normal
  12/27/2025 04 AM PST            4.14            387         -              Normal
  12/27/2025 05 AM PST            4.10            367         -              Normal
  12/27/2025 06 AM PST            4.05            342         -              Normal
  12/27/2025 07 AM PST            4.00            317         -              Normal
  12/27/2025 08 AM PST            3.95            293         -              Normal
  12/27/2025 09 AM PST            3.90            270         -              Normal
  12/27/2025 10 AM PST            3.85            248         -              Normal
  12/27/2025 11 AM PST            3.80            226         -              Normal
  12/27/2025 12 PM PST            3.75            206         -              Normal
  12/27/2025 01 PM PST            3.70            188         -              Normal
  12/27/2025 02 PM PST            3.66            174         -              Normal
  12/27/2025 03 PM PST            3.62            160         -              Normal
  12/27/2025 04 PM PST            3.59            150         -              Normal
  12/27/2025 05 PM PST            3.55            138         -              Normal
  12/27/2025 06 PM PST            3.52            129         -              Normal
  12/27/2025 07 PM PST            3.49            121         -              Normal
  12/27/2025 08 PM PST            3.47            115         -              Normal
  12/27/2025 09 PM PST            3.45            110         -              Normal
  12/27/2025 10 PM PST            3.43            105         -              Normal
  12/27/2025 11 PM PST            3.41            101         -              Normal
  12/28/2025 12 AM PST            3.39             96         -              Normal
  12/28/2025 01 AM PST            3.38             94         -              Normal
  12/28/2025 02 AM PST            3.37             92         -              Normal
  12/28/2025 03 AM PST            3.35             88         -              Normal
  12/28/2025 04 AM PST            3.34             86         -              Normal
  12/28/2025 05 AM PST            3.33             84         -              Normal
  12/28/2025 06 AM PST            3.32             82         -              Normal
  12/28/2025 07 AM PST            3.31             80         -              Normal
  12/28/2025 08 AM PST            3.30             79         -              Normal
  12/28/2025 09 AM PST            3.30             79         0              Normal
  12/28/2025 10 AM PST            3.29             77         -              Normal
  12/28/2025 11 AM PST            3.28             75         -              Normal
  12/28/2025 12 PM PST            3.27             73         -              Normal
  12/28/2025 01 PM PST            3.27             73         0              Normal
  12/28/2025 02 PM PST            3.26             72         -              Normal
  12/28/2025 03 PM PST            3.25             70         -              Normal
  12/28/2025 04 PM PST            3.25             70         0              Normal
  12/28/2025 05 PM PST            3.24             68         -              Normal
  12/28/2025 06 PM PST            3.24             68         0              Normal
  12/28/2025 07 PM PST            3.23             67         -              Normal
  12/28/2025 08 PM PST            3.23             67         0              Normal
  12/28/2025 09 PM PST            3.23             67         0              Normal
  12/28/2025 10 PM PST            3.22             65         -              Normal
  12/28/2025 11 PM PST            3.22             65         0              Normal
  12/29/2025 12 AM PST            3.21             63         -              Normal
  12/29/2025 01 AM PST            3.21             63         0              Normal
  12/29/2025 02 AM PST            3.21             63         0              Normal
  12/29/2025 03 AM PST            3.20             62         -              Normal
  12/29/2025 04 AM PST            3.20             62         0              Normal
  12/29/2025 05 AM PST            3.20             62         0              Normal
  12/29/2025 06 AM PST            3.19             60         -              Normal
  12/29/2025 07 AM PST            3.19             60         0              Normal
  12/29/2025 08 AM PST            3.19             60         0              Normal
  12/29/2025 09 AM PST            3.19             60         0              Normal
  12/29/2025 10 AM PST            3.18             59         -              Normal
  12/29/2025 11 AM PST            3.18             59         0              Normal
  12/29/2025 12 PM PST            3.18             59         0              Normal
  12/29/2025 01 PM PST            3.17             57         -              Normal
  12/29/2025 02 PM PST            3.17             57         0              Normal
  12/29/2025 03 PM PST            3.17             57         0              Normal
  12/29/2025 04 PM PST            3.17             57         0              Normal
  12/29/2025 05 PM PST            3.16             55         -              Normal
  12/29/2025 06 PM PST            3.16             55         0              Normal
  12/29/2025 07 PM PST            3.16             55         0              Normal
  12/29/2025 08 PM PST            3.15             54         -              Normal
  12/29/2025 09 PM PST            3.15             54         0              Normal
  12/29/2025 10 PM PST            3.15             54         0              Normal
  12/29/2025 11 PM PST            3.15             54         0              Normal
  12/30/2025 12 AM PST            3.14             52         -              Normal
  12/30/2025 01 AM PST            3.14             52         0              Normal
  12/30/2025 02 AM PST            3.14             52         0              Normal
  12/30/2025 03 AM PST            3.13             51         -              Normal
  12/30/2025 04 AM PST            3.13             51         0              Normal
  12/30/2025 05 AM PST            3.13             51         0              Normal
  12/30/2025 06 AM PST            3.13             51         0              Normal
  12/30/2025 07 AM PST            3.12             50         -              Normal
  12/30/2025 08 AM PST            3.12             50         0              Normal
  12/30/2025 09 AM PST            3.12             50         0              Normal
  12/30/2025 10 AM PST            3.12             50         0              Normal
  12/30/2025 11 AM PST            3.11             48         -              Normal
  12/30/2025 12 PM PST            3.11             48         0              Normal
  12/30/2025 01 PM PST            3.11             48         0              Normal
  12/30/2025 02 PM PST            3.10             47         -              Normal
  12/30/2025 03 PM PST            3.10             47         0              Normal
  12/30/2025 04 PM PST            3.10             47         0              Normal
  12/30/2025 05 PM PST            3.10             47         0              Normal
  12/30/2025 06 PM PST            3.09             45         -              Normal
  12/30/2025 07 PM PST            3.09             45         0              Normal
  12/30/2025 08 PM PST            3.09             45         0              Normal
  12/30/2025 09 PM PST            3.09             45         0              Normal
  12/30/2025 10 PM PST            3.08             44         -              Normal
  12/30/2025 11 PM PST            3.08             44         0              Normal
  12/31/2025 12 AM PST            3.08             44         0              Normal
  12/31/2025 01 AM PST            3.08             44         0              Normal
  12/31/2025 02 AM PST            3.07             43         -              Normal
  12/31/2025 03 AM PST            3.07             43         0              Normal
  12/31/2025 04 AM PST            3.07             43         0              Normal
#
# NOTE 1: Stages are rounded to the nearest hundredth (.01) of a foot.
# NOTE 2: Flows are rounded to the nearest (1) cfs.
# NOTE 3: Trends are determined using hourly change in unrounded stage and flow.
# NOTE 4: Maximum Values are determined using unrounded stage and flow.