ARROYO MOCHO - PLEASANTON (AYMC1)
Latitude: 37.69º NLongitude: 121.87º WElevation: 335 FeetForecast Type: Unofficial Location
Location: Alameda County in CaliforniaBulletin Group: Central CoastRiver Group: South Bay
Issuance Time: Oct 18 2026 at 7:22 AM PDTNext Issuance: Oct 19 2026 at 9:00 AM PDT
Action: N/A Minor Flood: N/A Moderate Flood: N/A Major Flood: N/A

# Tabular Observed and Forecast Hydrograph Information
#
# Location: Arroyo Mocho - Pleasanton (AYMC1)
#
# File Generation Time:  10/18/2026 at 07:23 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  10/16/2026 at 12:00 PM PDT
# Maximum Observed Stage:                       3.41 Feet
# Maximum Observed Flow:                        2 cfs
#
# Earliest Date & Time of Maximum Forecast:     10/21/2026 at 06:00 PM PDT
# Maximum Forecast Stage:                       4.50 Feet
# Maximum Forecast Flow:                        55 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Observed Status
# ---------------------------------------------------------------------------------
  10/13/2026 07 AM PDT            3.35              2                Not Applicable
  10/13/2026 08 AM PDT            3.33              1         -      Not Applicable
  10/13/2026 09 AM PDT            3.32              1         -      Not Applicable
  10/13/2026 10 AM PDT            3.31              1         -      Not Applicable
  10/13/2026 11 AM PDT            3.31              1         0      Not Applicable
  10/13/2026 12 PM PDT            3.31              1         0      Not Applicable
  10/13/2026 01 PM PDT            3.31              1         0      Not Applicable
  10/13/2026 02 PM PDT            3.31              1         0      Not Applicable
  10/13/2026 03 PM PDT            3.29              1         -      Not Applicable
  10/13/2026 04 PM PDT            3.29              1         0      Not Applicable
  10/13/2026 05 PM PDT            3.29              1         0      Not Applicable
  10/13/2026 06 PM PDT            3.29              1         0      Not Applicable
  10/13/2026 07 PM PDT            3.35              2         +      Not Applicable
  10/13/2026 08 PM PDT            3.38              2         +      Not Applicable
  10/13/2026 09 PM PDT            3.37              2         -      Not Applicable
  10/13/2026 10 PM PDT            3.37              2         0      Not Applicable
  10/13/2026 11 PM PDT            3.34              1         -      Not Applicable
  10/14/2026 12 AM PDT            3.32              1         -      Not Applicable
  10/14/2026 01 AM PDT            3.31              1         -      Not Applicable
  10/14/2026 02 AM PDT            3.30              1         -      Not Applicable
  10/14/2026 03 AM PDT            3.29              1         -      Not Applicable
  10/14/2026 04 AM PDT            3.29              1         0      Not Applicable
  10/14/2026 05 AM PDT            3.29              1         0      Not Applicable
  10/14/2026 06 AM PDT            3.29              1         0      Not Applicable
  10/14/2026 07 AM PDT            3.29              1         0      Not Applicable
  10/14/2026 08 AM PDT            3.29              1         0      Not Applicable
  10/14/2026 09 AM PDT            3.29              1         0      Not Applicable
  10/14/2026 10 AM PDT            3.29              1         0      Not Applicable
  10/14/2026 11 AM PDT            3.33              1         +      Not Applicable
  10/14/2026 12 PM PDT            3.39              2         +      Not Applicable
  10/14/2026 01 PM PDT            3.40              2         +      Not Applicable
  10/14/2026 02 PM PDT            3.38              2         -      Not Applicable
  10/14/2026 03 PM PDT            3.36              2         -      Not Applicable
  10/14/2026 04 PM PDT            3.34              1         -      Not Applicable
  10/14/2026 05 PM PDT            3.35              2         +      Not Applicable
  10/14/2026 06 PM PDT            3.33              1         -      Not Applicable
  10/14/2026 07 PM PDT            3.31              1         -      Not Applicable
  10/14/2026 08 PM PDT            3.30              1         -      Not Applicable
  10/14/2026 09 PM PDT            3.29              1         -      Not Applicable
  10/14/2026 10 PM PDT            3.29              1         0      Not Applicable
  10/14/2026 11 PM PDT            3.35              2         +      Not Applicable
  10/15/2026 12 AM PDT            3.32              1         -      Not Applicable
  10/15/2026 01 AM PDT            3.31              1         -      Not Applicable
  10/15/2026 02 AM PDT            3.29              1         -      Not Applicable
  10/15/2026 03 AM PDT            3.29              1         0      Not Applicable
  10/15/2026 04 AM PDT            3.37              2         +      Not Applicable
  10/15/2026 05 AM PDT            3.38              2         +      Not Applicable
  10/15/2026 06 AM PDT            3.37              2         -      Not Applicable
  10/15/2026 07 AM PDT            3.35              2         -      Not Applicable
  10/15/2026 08 AM PDT            3.34              1         -      Not Applicable
  10/15/2026 09 AM PDT            3.33              1         -      Not Applicable
  10/15/2026 10 AM PDT            3.38              2         +      Not Applicable
  10/15/2026 11 AM PDT            3.33              1         -      Not Applicable
  10/15/2026 12 PM PDT            3.31              1         -      Not Applicable
  10/15/2026 01 PM PDT            3.29              1         -      Not Applicable
  10/15/2026 02 PM PDT            3.29              1         0      Not Applicable
  10/15/2026 03 PM PDT            3.28              1         -      Not Applicable
  10/15/2026 04 PM PDT            3.28              1         0      Not Applicable
  10/15/2026 05 PM PDT            3.28              1         0      Not Applicable
  10/15/2026 06 PM PDT            3.35              2         +      Not Applicable
  10/15/2026 07 PM PDT            3.37              2         +      Not Applicable
  10/15/2026 08 PM PDT            3.36              2         -      Not Applicable
  10/15/2026 09 PM PDT            3.34              1         -      Not Applicable
  10/15/2026 10 PM PDT            3.33              1         -      Not Applicable
  10/15/2026 11 PM PDT            3.31              1         -      Not Applicable
  10/16/2026 12 AM PDT            3.31              1         0      Not Applicable
  10/16/2026 01 AM PDT            3.30              1         -      Not Applicable
  10/16/2026 02 AM PDT            3.29              1         -      Not Applicable
  10/16/2026 03 AM PDT            3.29              1         0      Not Applicable
  10/16/2026 04 AM PDT            3.29              1         0      Not Applicable
  10/16/2026 05 AM PDT            3.29              1         0      Not Applicable
  10/16/2026 06 AM PDT            3.29              1         0      Not Applicable
  10/16/2026 07 AM PDT            3.29              1         0      Not Applicable
  10/16/2026 08 AM PDT            3.29              1         0      Not Applicable
  10/16/2026 09 AM PDT            3.29              1         0      Not Applicable
  10/16/2026 10 AM PDT            3.31              1         +      Not Applicable
  10/16/2026 11 AM PDT            3.39              2         +      Not Applicable
  10/16/2026 12 PM PDT            3.41              2         +      Not Applicable
  10/16/2026 01 PM PDT            3.39              2         -      Not Applicable
  10/16/2026 02 PM PDT            3.38              2         -      Not Applicable
  10/16/2026 03 PM PDT            3.36              2         -      Not Applicable
  10/16/2026 04 PM PDT            3.35              2         -      Not Applicable
  10/16/2026 05 PM PDT            3.32              1         -      Not Applicable
  10/16/2026 06 PM PDT            3.31              1         -      Not Applicable
  10/16/2026 07 PM PDT            3.31              1         0      Not Applicable
  10/16/2026 08 PM PDT            3.30              1         -      Not Applicable
  10/16/2026 09 PM PDT            3.30              1         0      Not Applicable
  10/16/2026 10 PM PDT            3.29              1         -      Not Applicable
  10/16/2026 11 PM PDT            3.29              1         0      Not Applicable
  10/17/2026 12 AM PDT            3.36              2         +      Not Applicable
  10/17/2026 01 AM PDT            3.34              1         -      Not Applicable
  10/17/2026 02 AM PDT            3.31              1         -      Not Applicable
  10/17/2026 03 AM PDT            3.35              2         +      Not Applicable
  10/17/2026 04 AM PDT            3.39              2         +      Not Applicable
  10/17/2026 05 AM PDT            3.39              2         0      Not Applicable
  10/17/2026 06 AM PDT            3.37              2         -      Not Applicable
  10/17/2026 07 AM PDT            3.35              2         -      Not Applicable
  10/17/2026 08 AM PDT            3.33              1         -      Not Applicable
  10/17/2026 09 AM PDT            3.32              1         -      Not Applicable
  10/17/2026 10 AM PDT            3.31              1         -      Not Applicable
  10/17/2026 11 AM PDT            3.31              1         0      Not Applicable
  10/17/2026 12 PM PDT            3.30              1         -      Not Applicable
  10/17/2026 01 PM PDT            3.29              1         -      Not Applicable
  10/17/2026 02 PM PDT            3.29              1         0      Not Applicable
  10/17/2026 03 PM PDT            3.29              1         0      Not Applicable
  10/17/2026 04 PM PDT            3.29              1         0      Not Applicable
  10/17/2026 05 PM PDT            3.29              1         0      Not Applicable
  10/17/2026 06 PM PDT            3.29              1         0      Not Applicable
  10/17/2026 07 PM PDT            3.31              1         +      Not Applicable
  10/17/2026 08 PM PDT            3.38              2         +      Not Applicable
  10/17/2026 09 PM PDT            3.39              2         +      Not Applicable
  10/17/2026 10 PM PDT            3.37              2         -      Not Applicable
  10/17/2026 11 PM PDT            3.35              2         -      Not Applicable
  10/18/2026 12 AM PDT            3.34              1         -      Not Applicable
  10/18/2026 01 AM PDT            3.34              1         0      Not Applicable
  10/18/2026 02 AM PDT            3.34              1         0      Not Applicable
  10/18/2026 03 AM PDT            3.33              1         -      Not Applicable
  10/18/2026 04 AM PDT            3.33              1         0      Not Applicable
  10/18/2026 05 AM PDT            3.33              1         0      Not Applicable
  10/18/2026 06 AM PDT            3.33              1         0      Not Applicable
  10/18/2026 07 AM PDT            3.33              1         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Stage (Feet)     Flow (cfs)     Trend     Forecast Status
# ---------------------------------------------------------------------------------
  10/18/2026 08 AM PDT            3.33              1                Not Applicable
  10/18/2026 09 AM PDT            3.33              1         0      Not Applicable
  10/18/2026 10 AM PDT            3.33              1         0      Not Applicable
  10/18/2026 11 AM PDT            3.33              1         0      Not Applicable
  10/18/2026 12 PM PDT            3.33              1         0      Not Applicable
  10/18/2026 01 PM PDT            3.33              1         0      Not Applicable
  10/18/2026 02 PM PDT            3.33              1         0      Not Applicable
  10/18/2026 03 PM PDT            3.33              1         0      Not Applicable
  10/18/2026 04 PM PDT            3.33              1         0      Not Applicable
  10/18/2026 05 PM PDT            3.33              1         0      Not Applicable
  10/18/2026 06 PM PDT            3.33              1         0      Not Applicable
  10/18/2026 07 PM PDT            3.33              1         0      Not Applicable
  10/18/2026 08 PM PDT            3.33              1         0      Not Applicable
  10/18/2026 09 PM PDT            3.33              1         0      Not Applicable
  10/18/2026 10 PM PDT            3.33              1         0      Not Applicable
  10/18/2026 11 PM PDT            3.33              1         0      Not Applicable
  10/19/2026 12 AM PDT            3.33              1         0      Not Applicable
  10/19/2026 01 AM PDT            3.33              1         0      Not Applicable
  10/19/2026 02 AM PDT            3.33              1         0      Not Applicable
  10/19/2026 03 AM PDT            3.33              1         0      Not Applicable
  10/19/2026 04 AM PDT            3.33              1         0      Not Applicable
  10/19/2026 05 AM PDT            3.33              1         0      Not Applicable
  10/19/2026 06 AM PDT            3.33              1         0      Not Applicable
  10/19/2026 07 AM PDT            3.33              1         0      Not Applicable
  10/19/2026 08 AM PDT            3.33              1         0      Not Applicable
  10/19/2026 09 AM PDT            3.33              1         0      Not Applicable
  10/19/2026 10 AM PDT            3.33              1         0      Not Applicable
  10/19/2026 11 AM PDT            3.33              1         0      Not Applicable
  10/19/2026 12 PM PDT            3.33              1         0      Not Applicable
  10/19/2026 01 PM PDT            3.33              1         0      Not Applicable
  10/19/2026 02 PM PDT            3.33              1         0      Not Applicable
  10/19/2026 03 PM PDT            3.33              1         0      Not Applicable
  10/19/2026 04 PM PDT            3.33              1         0      Not Applicable
  10/19/2026 05 PM PDT            3.33              1         0      Not Applicable
  10/19/2026 06 PM PDT            3.33              1         0      Not Applicable
  10/19/2026 07 PM PDT            3.33              1         0      Not Applicable
  10/19/2026 08 PM PDT            3.33              1         0      Not Applicable
  10/19/2026 09 PM PDT            3.33              1         0      Not Applicable
  10/19/2026 10 PM PDT            3.33              1         0      Not Applicable
  10/19/2026 11 PM PDT            3.33              1         0      Not Applicable
  10/20/2026 12 AM PDT            3.33              1         0      Not Applicable
  10/20/2026 01 AM PDT            3.33              1         0      Not Applicable
  10/20/2026 02 AM PDT            3.33              1         0      Not Applicable
  10/20/2026 03 AM PDT            3.33              1         0      Not Applicable
  10/20/2026 04 AM PDT            3.33              1         0      Not Applicable
  10/20/2026 05 AM PDT            3.33              1         0      Not Applicable
  10/20/2026 06 AM PDT            3.36              2         +      Not Applicable
  10/20/2026 07 AM PDT            3.41              2         +      Not Applicable
  10/20/2026 08 AM PDT            3.49              4         +      Not Applicable
  10/20/2026 09 AM PDT            3.54              5         +      Not Applicable
  10/20/2026 10 AM PDT            3.56              5         +      Not Applicable
  10/20/2026 11 AM PDT            3.57              5         +      Not Applicable
  10/20/2026 12 PM PDT            3.56              5         -      Not Applicable
  10/20/2026 01 PM PDT            3.53              4         -      Not Applicable
  10/20/2026 02 PM PDT            3.47              3         -      Not Applicable
  10/20/2026 03 PM PDT            3.42              2         -      Not Applicable
  10/20/2026 04 PM PDT            3.39              2         -      Not Applicable
  10/20/2026 05 PM PDT            3.38              2         -      Not Applicable
  10/20/2026 06 PM PDT            3.40              2         +      Not Applicable
  10/20/2026 07 PM PDT            3.45              3         +      Not Applicable
  10/20/2026 08 PM PDT            3.51              4         +      Not Applicable
  10/20/2026 09 PM PDT            3.55              5         +      Not Applicable
  10/20/2026 10 PM PDT            3.57              5         +      Not Applicable
  10/20/2026 11 PM PDT            3.58              5         +      Not Applicable
  10/21/2026 12 AM PDT            3.66              7         +      Not Applicable
  10/21/2026 01 AM PDT            3.80             12         +      Not Applicable
  10/21/2026 02 AM PDT            3.99             20         +      Not Applicable
  10/21/2026 03 AM PDT            4.09             25         +      Not Applicable
  10/21/2026 04 AM PDT            4.14             28         +      Not Applicable
  10/21/2026 05 AM PDT            4.17             29         +      Not Applicable
  10/21/2026 06 AM PDT            4.21             32         +      Not Applicable
  10/21/2026 07 AM PDT            4.24             34         +      Not Applicable
  10/21/2026 08 AM PDT            4.27             36         +      Not Applicable
  10/21/2026 09 AM PDT            4.29             38         +      Not Applicable
  10/21/2026 10 AM PDT            4.32             40         +      Not Applicable
  10/21/2026 11 AM PDT            4.36             43         +      Not Applicable
  10/21/2026 12 PM PDT            4.39             45         +      Not Applicable
  10/21/2026 01 PM PDT            4.42             48         +      Not Applicable
  10/21/2026 02 PM PDT            4.43             49         +      Not Applicable
  10/21/2026 03 PM PDT            4.44             50         +      Not Applicable
  10/21/2026 04 PM PDT            4.46             52         +      Not Applicable
  10/21/2026 05 PM PDT            4.48             53         +      Not Applicable
  10/21/2026 06 PM PDT            4.50             55         +      Not Applicable
  10/21/2026 07 PM PDT            4.50             55         0      Not Applicable
  10/21/2026 08 PM PDT            4.50             55         0      Not Applicable
  10/21/2026 09 PM PDT            4.50             55         0      Not Applicable
  10/21/2026 10 PM PDT            4.50             55         0      Not Applicable
  10/21/2026 11 PM PDT            4.49             54         -      Not Applicable
  10/22/2026 12 AM PDT            4.47             52         -      Not Applicable
  10/22/2026 01 AM PDT            4.44             50         -      Not Applicable
  10/22/2026 02 AM PDT            4.40             46         -      Not Applicable
  10/22/2026 03 AM PDT            4.36             43         -      Not Applicable
  10/22/2026 04 AM PDT            4.33             41         -      Not Applicable
  10/22/2026 05 AM PDT            4.30             38         -      Not Applicable
  10/22/2026 06 AM PDT            4.27             36         -      Not Applicable
  10/22/2026 07 AM PDT            4.23             33         -      Not Applicable
  10/22/2026 08 AM PDT            4.20             31         -      Not Applicable
  10/22/2026 09 AM PDT            4.16             29         -      Not Applicable
  10/22/2026 10 AM PDT            4.13             27         -      Not Applicable
  10/22/2026 11 AM PDT            4.10             25         -      Not Applicable
  10/22/2026 12 PM PDT            4.08             24         -      Not Applicable
  10/22/2026 01 PM PDT            4.07             24         -      Not Applicable
  10/22/2026 02 PM PDT            4.09             25         +      Not Applicable
  10/22/2026 03 PM PDT            4.09             25         0      Not Applicable
  10/22/2026 04 PM PDT            4.09             25         0      Not Applicable
  10/22/2026 05 PM PDT            4.10             25         +      Not Applicable
  10/22/2026 06 PM PDT            4.11             26         +      Not Applicable
  10/22/2026 07 PM PDT            4.09             25         -      Not Applicable
  10/22/2026 08 PM PDT            4.04             22         -      Not Applicable
  10/22/2026 09 PM PDT            4.00             20         -      Not Applicable
  10/22/2026 10 PM PDT            4.01             20         +      Not Applicable
  10/22/2026 11 PM PDT            4.04             22         +      Not Applicable
  10/23/2026 12 AM PDT            4.08             24         +      Not Applicable
  10/23/2026 01 AM PDT            4.13             27         +      Not Applicable
  10/23/2026 02 AM PDT            4.18             30         +      Not Applicable
  10/23/2026 03 AM PDT            4.21             32         +      Not Applicable
  10/23/2026 04 AM PDT            4.23             33         +      Not Applicable
  10/23/2026 05 AM PDT            4.21             32         -      Not Applicable
#
# 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.