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

*** IMPORTANT ***  Week of June 16 - Website Data Outage - Due to a major computer upgrade the week of June 16, nearly all data on the CNRFC web site will not be updated. We anticipate the down time to be approximately 4 days. The latest deterministic hydrologic forecasts for official forecast points will continue to be available at the National Water Prediction Service during this time.
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ARROYO MOCHO - PLEASANTON (AYMC1)
Latitude: 37.69º NLongitude: 121.87º WElevation: 335 Feet
Location: Alameda County in CaliforniaBulletin Group: Central CoastRiver Group: South Bay
Issuance Time: Jun 21 2025 at 11:02 AM PDTNext Issuance: Jun 22 2025 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: Arroyo Mocho - Pleasanton (AYMC1)
#
# File Generation Time:  06/21/2025 at 11:03 AM PDT
# Data Interval:  1 Hour
#
# Most Recent Date & Time of Maximum Observed:  06/21/2025 at 09:00 AM PDT
# Maximum Observed Flow:                        2 cfs
#
# Earliest Date & Time of Maximum Forecast:     06/21/2025 at 11:00 AM PDT
# Maximum Forecast Flow:                        2 cfs
#
# OBSERVED
#
# Date & Time  (Local)    Flow (cfs)     Trend     Observed Status
# ----------------------------------------------------------------
  06/16/2025 11 AM PDT             2                Not Applicable
  06/16/2025 12 PM PDT             2         0      Not Applicable
  06/16/2025 01 PM PDT             2         0      Not Applicable
  06/16/2025 02 PM PDT             2         0      Not Applicable
  06/16/2025 03 PM PDT             2         0      Not Applicable
  06/16/2025 04 PM PDT             2         0      Not Applicable
  06/16/2025 05 PM PDT             2         0      Not Applicable
  06/16/2025 06 PM PDT             2         0      Not Applicable
  06/16/2025 07 PM PDT             2         0      Not Applicable
  06/16/2025 08 PM PDT             2         0      Not Applicable
  06/16/2025 09 PM PDT             2         0      Not Applicable
  06/16/2025 10 PM PDT             2         0      Not Applicable
  06/16/2025 11 PM PDT             2         0      Not Applicable
  06/17/2025 12 AM PDT             2         0      Not Applicable
  06/17/2025 01 AM PDT             2         0      Not Applicable
  06/17/2025 02 AM PDT             2         0      Not Applicable
  06/17/2025 03 AM PDT             2         0      Not Applicable
  06/17/2025 04 AM PDT             2         0      Not Applicable
  06/17/2025 05 AM PDT             2         0      Not Applicable
  06/17/2025 06 AM PDT             2         0      Not Applicable
  06/17/2025 07 AM PDT             2         0      Not Applicable
  06/17/2025 08 AM PDT             2         0      Not Applicable
  06/17/2025 09 AM PDT             2         0      Not Applicable
  06/17/2025 10 AM PDT             2         0      Not Applicable
  06/17/2025 11 AM PDT             2         0      Not Applicable
  06/17/2025 12 PM PDT             2         0      Not Applicable
  06/17/2025 01 PM PDT             2         0      Not Applicable
  06/17/2025 02 PM PDT             2         0      Not Applicable
  06/17/2025 03 PM PDT             2         0      Not Applicable
  06/17/2025 04 PM PDT             2         0      Not Applicable
  06/17/2025 05 PM PDT             2         0      Not Applicable
  06/17/2025 06 PM PDT             2         0      Not Applicable
  06/17/2025 07 PM PDT             2         0      Not Applicable
  06/17/2025 08 PM PDT             2         0      Not Applicable
  06/17/2025 09 PM PDT             2         0      Not Applicable
  06/17/2025 10 PM PDT             2         0      Not Applicable
  06/17/2025 11 PM PDT             2         0      Not Applicable
  06/18/2025 12 AM PDT             2         0      Not Applicable
  06/18/2025 01 AM PDT             2         0      Not Applicable
  06/18/2025 02 AM PDT             2         0      Not Applicable
  06/18/2025 03 AM PDT             2         0      Not Applicable
  06/18/2025 04 AM PDT             2         0      Not Applicable
  06/18/2025 05 AM PDT             2         0      Not Applicable
  06/18/2025 06 AM PDT             2         0      Not Applicable
  06/18/2025 07 AM PDT             2         0      Not Applicable
  06/18/2025 08 AM PDT             2         0      Not Applicable
  06/18/2025 09 AM PDT             2         0      Not Applicable
  06/18/2025 10 AM PDT             2         0      Not Applicable
  06/18/2025 11 AM PDT             2         0      Not Applicable
  06/18/2025 12 PM PDT             2         0      Not Applicable
  06/18/2025 01 PM PDT             2         0      Not Applicable
  06/18/2025 02 PM PDT             2         0      Not Applicable
  06/18/2025 03 PM PDT             2         0      Not Applicable
  06/18/2025 04 PM PDT             2         0      Not Applicable
  06/18/2025 05 PM PDT             2         0      Not Applicable
  06/18/2025 06 PM PDT             2         0      Not Applicable
  06/18/2025 07 PM PDT             2         0      Not Applicable
  06/18/2025 08 PM PDT             2         0      Not Applicable
  06/18/2025 09 PM PDT             2         0      Not Applicable
  06/18/2025 10 PM PDT             2         0      Not Applicable
  06/18/2025 11 PM PDT             2         0      Not Applicable
  06/19/2025 12 AM PDT             2         0      Not Applicable
  06/19/2025 01 AM PDT             2         0      Not Applicable
  06/19/2025 02 AM PDT             2         0      Not Applicable
  06/19/2025 03 AM PDT             2         0      Not Applicable
  06/19/2025 04 AM PDT             2         0      Not Applicable
  06/19/2025 05 AM PDT             2         0      Not Applicable
  06/19/2025 06 AM PDT             2         0      Not Applicable
  06/19/2025 07 AM PDT             2         0      Not Applicable
  06/19/2025 08 AM PDT             2         0      Not Applicable
  06/19/2025 09 AM PDT             2         0      Not Applicable
  06/19/2025 10 AM PDT             2         0      Not Applicable
  06/19/2025 11 AM PDT             2         0      Not Applicable
  06/19/2025 12 PM PDT             2         0      Not Applicable
  06/19/2025 01 PM PDT             2         0      Not Applicable
  06/19/2025 02 PM PDT             2         0      Not Applicable
  06/19/2025 03 PM PDT             2         0      Not Applicable
  06/19/2025 04 PM PDT             2         0      Not Applicable
  06/19/2025 05 PM PDT             2         0      Not Applicable
  06/19/2025 06 PM PDT             2         0      Not Applicable
  06/19/2025 07 PM PDT             2         0      Not Applicable
  06/19/2025 08 PM PDT             2         0      Not Applicable
  06/19/2025 09 PM PDT             2         0      Not Applicable
  06/19/2025 10 PM PDT             2         0      Not Applicable
  06/19/2025 11 PM PDT             2         0      Not Applicable
  06/20/2025 12 AM PDT             2         0      Not Applicable
  06/20/2025 01 AM PDT             2         0      Not Applicable
  06/20/2025 02 AM PDT             2         0      Not Applicable
  06/20/2025 03 AM PDT             2         0      Not Applicable
  06/20/2025 04 AM PDT             2         0      Not Applicable
  06/20/2025 05 AM PDT             2         0      Not Applicable
  06/20/2025 06 AM PDT             2         0      Not Applicable
  06/20/2025 07 AM PDT             2         0      Not Applicable
  06/20/2025 08 AM PDT             2         0      Not Applicable
  06/20/2025 09 AM PDT             2         0      Not Applicable
  06/20/2025 10 AM PDT             2         0      Not Applicable
  06/20/2025 11 AM PDT             2         0      Not Applicable
  06/20/2025 12 PM PDT             2         0      Not Applicable
  06/20/2025 01 PM PDT             2         0      Not Applicable
  06/20/2025 02 PM PDT             2         0      Not Applicable
  06/20/2025 03 PM PDT             2         0      Not Applicable
  06/20/2025 04 PM PDT             2         0      Not Applicable
  06/20/2025 05 PM PDT             2         0      Not Applicable
  06/20/2025 06 PM PDT             2         0      Not Applicable
  06/20/2025 07 PM PDT             2         0      Not Applicable
  06/20/2025 08 PM PDT             2         0      Not Applicable
  06/20/2025 09 PM PDT             2         0      Not Applicable
  06/20/2025 10 PM PDT             2         0      Not Applicable
  06/20/2025 11 PM PDT             2         0      Not Applicable
  06/21/2025 12 AM PDT             2         0      Not Applicable
  06/21/2025 01 AM PDT             2         0      Not Applicable
  06/21/2025 02 AM PDT             2         0      Not Applicable
  06/21/2025 03 AM PDT             2         0      Not Applicable
  06/21/2025 04 AM PDT             2         0      Not Applicable
  06/21/2025 05 AM PDT             2         0      Not Applicable
  06/21/2025 06 AM PDT             2         0      Not Applicable
  06/21/2025 07 AM PDT             2         0      Not Applicable
  06/21/2025 08 AM PDT             2         0      Not Applicable
  06/21/2025 09 AM PDT             2         0      Not Applicable
#
# FORECAST
#
# Date & Time  (Local)    Flow (cfs)     Trend     Forecast Status
# ----------------------------------------------------------------
  06/21/2025 11 AM PDT             2                Not Applicable
  06/21/2025 12 PM PDT             2         0      Not Applicable
  06/21/2025 01 PM PDT             2         0      Not Applicable
  06/21/2025 02 PM PDT             2         0      Not Applicable
  06/21/2025 03 PM PDT             2         0      Not Applicable
  06/21/2025 04 PM PDT             2         0      Not Applicable
  06/21/2025 05 PM PDT             2         0      Not Applicable
  06/21/2025 06 PM PDT             2         0      Not Applicable
  06/21/2025 07 PM PDT             2         0      Not Applicable
  06/21/2025 08 PM PDT             2         0      Not Applicable
  06/21/2025 09 PM PDT             2         0      Not Applicable
  06/21/2025 10 PM PDT             2         0      Not Applicable
  06/21/2025 11 PM PDT             2         0      Not Applicable
  06/22/2025 12 AM PDT             2         0      Not Applicable
  06/22/2025 01 AM PDT             2         0      Not Applicable
  06/22/2025 02 AM PDT             2         0      Not Applicable
  06/22/2025 03 AM PDT             2         0      Not Applicable
  06/22/2025 04 AM PDT             2         0      Not Applicable
  06/22/2025 05 AM PDT             2         0      Not Applicable
  06/22/2025 06 AM PDT             2         0      Not Applicable
  06/22/2025 07 AM PDT             2         0      Not Applicable
  06/22/2025 08 AM PDT             2         0      Not Applicable
  06/22/2025 09 AM PDT             2         0      Not Applicable
  06/22/2025 10 AM PDT             2         0      Not Applicable
  06/22/2025 11 AM PDT             2         0      Not Applicable
  06/22/2025 12 PM PDT             2         0      Not Applicable
  06/22/2025 01 PM PDT             2         0      Not Applicable
  06/22/2025 02 PM PDT             2         0      Not Applicable
  06/22/2025 03 PM PDT             2         0      Not Applicable
  06/22/2025 04 PM PDT             2         0      Not Applicable
  06/22/2025 05 PM PDT             2         0      Not Applicable
  06/22/2025 06 PM PDT             2         0      Not Applicable
  06/22/2025 07 PM PDT             2         0      Not Applicable
  06/22/2025 08 PM PDT             2         0      Not Applicable
  06/22/2025 09 PM PDT             2         0      Not Applicable
  06/22/2025 10 PM PDT             2         0      Not Applicable
  06/22/2025 11 PM PDT             2         0      Not Applicable
  06/23/2025 12 AM PDT             2         0      Not Applicable
  06/23/2025 01 AM PDT             2         0      Not Applicable
  06/23/2025 02 AM PDT             2         0      Not Applicable
  06/23/2025 03 AM PDT             2         0      Not Applicable
  06/23/2025 04 AM PDT             2         0      Not Applicable
  06/23/2025 05 AM PDT             2         0      Not Applicable
  06/23/2025 06 AM PDT             2         0      Not Applicable
  06/23/2025 07 AM PDT             2         0      Not Applicable
  06/23/2025 08 AM PDT             2         0      Not Applicable
  06/23/2025 09 AM PDT             2         0      Not Applicable
  06/23/2025 10 AM PDT             2         0      Not Applicable
  06/23/2025 11 AM PDT             2         0      Not Applicable
  06/23/2025 12 PM PDT             2         0      Not Applicable
  06/23/2025 01 PM PDT             2         0      Not Applicable
  06/23/2025 02 PM PDT             2         0      Not Applicable
  06/23/2025 03 PM PDT             2         0      Not Applicable
  06/23/2025 04 PM PDT             2         0      Not Applicable
  06/23/2025 05 PM PDT             2         0      Not Applicable
  06/23/2025 06 PM PDT             2         0      Not Applicable
  06/23/2025 07 PM PDT             2         0      Not Applicable
  06/23/2025 08 PM PDT             2         0      Not Applicable
  06/23/2025 09 PM PDT             2         0      Not Applicable
  06/23/2025 10 PM PDT             2         0      Not Applicable
  06/23/2025 11 PM PDT             2         0      Not Applicable
  06/24/2025 12 AM PDT             2         0      Not Applicable
  06/24/2025 01 AM PDT             2         0      Not Applicable
  06/24/2025 02 AM PDT             2         0      Not Applicable
  06/24/2025 03 AM PDT             2         0      Not Applicable
  06/24/2025 04 AM PDT             2         0      Not Applicable
  06/24/2025 05 AM PDT             2         0      Not Applicable
  06/24/2025 06 AM PDT             2         0      Not Applicable
  06/24/2025 07 AM PDT             2         0      Not Applicable
  06/24/2025 08 AM PDT             2         0      Not Applicable
  06/24/2025 09 AM PDT             2         0      Not Applicable
  06/24/2025 10 AM PDT             2         0      Not Applicable
  06/24/2025 11 AM PDT             2         0      Not Applicable
  06/24/2025 12 PM PDT             2         0      Not Applicable
  06/24/2025 01 PM PDT             2         0      Not Applicable
  06/24/2025 02 PM PDT             2         0      Not Applicable
  06/24/2025 03 PM PDT             2         0      Not Applicable
  06/24/2025 04 PM PDT             2         0      Not Applicable
  06/24/2025 05 PM PDT             2         0      Not Applicable
  06/24/2025 06 PM PDT             2         0      Not Applicable
  06/24/2025 07 PM PDT             2         0      Not Applicable
  06/24/2025 08 PM PDT             2         0      Not Applicable
  06/24/2025 09 PM PDT             2         0      Not Applicable
  06/24/2025 10 PM PDT             2         0      Not Applicable
  06/24/2025 11 PM PDT             2         0      Not Applicable
  06/25/2025 12 AM PDT             2         0      Not Applicable
  06/25/2025 01 AM PDT             2         0      Not Applicable
  06/25/2025 02 AM PDT             2         0      Not Applicable
  06/25/2025 03 AM PDT             2         0      Not Applicable
  06/25/2025 04 AM PDT             2         0      Not Applicable
  06/25/2025 05 AM PDT             2         0      Not Applicable
  06/25/2025 06 AM PDT             2         0      Not Applicable
  06/25/2025 07 AM PDT             2         0      Not Applicable
  06/25/2025 08 AM PDT             2         0      Not Applicable
  06/25/2025 09 AM PDT             2         0      Not Applicable
  06/25/2025 10 AM PDT             2         0      Not Applicable
  06/25/2025 11 AM PDT             2         0      Not Applicable
  06/25/2025 12 PM PDT             2         0      Not Applicable
  06/25/2025 01 PM PDT             2         0      Not Applicable
  06/25/2025 02 PM PDT             2         0      Not Applicable
  06/25/2025 03 PM PDT             2         0      Not Applicable
  06/25/2025 04 PM PDT             2         0      Not Applicable
  06/25/2025 05 PM PDT             2         0      Not Applicable
  06/25/2025 06 PM PDT             2         0      Not Applicable
  06/25/2025 07 PM PDT             2         0      Not Applicable
  06/25/2025 08 PM PDT             2         0      Not Applicable
  06/25/2025 09 PM PDT             2         0      Not Applicable
  06/25/2025 10 PM PDT             2         0      Not Applicable
  06/25/2025 11 PM PDT             2         0      Not Applicable
  06/26/2025 12 AM PDT             2         0      Not Applicable
  06/26/2025 01 AM PDT             2         0      Not Applicable
  06/26/2025 02 AM PDT             2         0      Not Applicable
  06/26/2025 03 AM PDT             2         0      Not Applicable
  06/26/2025 04 AM PDT             2         0      Not Applicable
  06/26/2025 05 AM PDT             2         0      Not Applicable
#
# NOTE 1: Flows are rounded to the nearest (1) cfs.
# NOTE 2: Trends are determined using hourly change in unrounded flow.
# NOTE 3: Maximum Values are determined using unrounded flow.