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SANTA MARGARITA RIVER - YSIDORA (YDRC1)
| Latitude: 33.31º N | Longitude: 117.35º W | Elevation: 75 Feet | | | |
| Location: San Diego County in California | Bulletin Group: Southern California | River Group: San Diego/Inland |
| Issuance Time: | Feb 01 2026 at 7:16 AM PST | Next Issuance: | Feb 02 2026 at 9:00 AM PST
| |
| Action/Monitor: 10.85 Feet | Minor Flood: 12.5 Feet | Moderate Flood: 13.78 Feet | Major Flood: 16.29 Feet |
# Tabular Observed and Forecast Hydrograph Information
#
# Location: Santa Margarita River - Ysidora (YDRC1)
#
# File Generation Time: 02/01/2026 at 07:16 AM PST
# Data Interval: 1 Hour
#
# Most Recent Date & Time of Maximum Observed: 01/27/2026 at 05:00 PM PST
# Maximum Observed Stage: 7.35 Feet
# Maximum Observed Flow: 5 cfs
#
# Earliest Date & Time of Maximum Forecast: 02/01/2026 at 08:00 AM PST
# Maximum Forecast Stage: 7.22 Feet
# Maximum Forecast Flow: 2 cfs
#
# OBSERVED
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Observed Status
# ---------------------------------------------------------------------------------
01/27/2026 07 AM PST 7.35 5 Normal
01/27/2026 08 AM PST 7.35 5 0 Normal
01/27/2026 09 AM PST 7.34 5 - Normal
01/27/2026 10 AM PST 7.34 5 0 Normal
01/27/2026 11 AM PST 7.34 5 0 Normal
01/27/2026 12 PM PST 7.34 5 0 Normal
01/27/2026 01 PM PST 7.35 5 + Normal
01/27/2026 02 PM PST 7.34 5 - Normal
01/27/2026 03 PM PST 7.34 5 0 Normal
01/27/2026 04 PM PST 7.35 5 + Normal
01/27/2026 05 PM PST 7.35 5 0 Normal
01/27/2026 06 PM PST 7.33 5 - Normal
01/27/2026 07 PM PST 7.34 5 + Normal
01/27/2026 08 PM PST 7.32 4 - Normal
01/27/2026 09 PM PST 7.32 4 0 Normal
01/27/2026 10 PM PST 7.33 5 + Normal
01/27/2026 11 PM PST 7.32 4 - Normal
01/28/2026 12 AM PST 7.32 4 0 Normal
01/28/2026 01 AM PST 7.30 4 - Normal
01/28/2026 02 AM PST 7.29 3 - Normal
01/28/2026 03 AM PST 7.29 3 0 Normal
01/28/2026 04 AM PST 7.29 3 0 Normal
01/28/2026 05 AM PST 7.29 3 0 Normal
01/28/2026 06 AM PST 7.28 3 - Normal
01/28/2026 07 AM PST 7.28 3 0 Normal
01/28/2026 08 AM PST 7.25 2 - Normal
01/28/2026 09 AM PST 7.24 2 - Normal
01/28/2026 10 AM PST 7.24 2 0 Normal
01/28/2026 11 AM PST 7.23 2 - Normal
01/28/2026 12 PM PST 7.23 2 0 Normal
01/28/2026 01 PM PST 7.21 2 - Normal
01/28/2026 02 PM PST 7.21 2 0 Normal
01/28/2026 03 PM PST 7.22 2 + Normal
01/28/2026 04 PM PST 7.22 2 0 Normal
01/28/2026 05 PM PST 7.22 2 0 Normal
01/28/2026 06 PM PST 7.22 2 0 Normal
01/28/2026 07 PM PST 7.22 2 0 Normal
01/28/2026 08 PM PST 7.22 2 0 Normal
01/28/2026 09 PM PST 7.22 2 0 Normal
01/28/2026 10 PM PST 7.22 2 0 Normal
01/28/2026 11 PM PST 7.22 2 0 Normal
01/29/2026 12 AM PST 7.22 2 0 Normal
01/29/2026 01 AM PST 7.22 2 0 Normal
01/29/2026 02 AM PST 7.22 2 0 Normal
01/29/2026 03 AM PST 7.22 2 0 Normal
01/29/2026 04 AM PST 7.22 2 0 Normal
01/29/2026 05 AM PST 7.22 2 0 Normal
01/29/2026 06 AM PST 7.21 2 - Normal
01/29/2026 07 AM PST 7.22 2 + Normal
01/29/2026 08 AM PST 7.21 2 - Normal
01/29/2026 09 AM PST 7.21 2 0 Normal
01/29/2026 10 AM PST 7.21 2 0 Normal
01/29/2026 11 AM PST 7.21 2 0 Normal
01/29/2026 12 PM PST 7.21 2 0 Normal
01/29/2026 01 PM PST 7.22 2 + Normal
01/29/2026 02 PM PST 7.22 2 0 Normal
01/29/2026 03 PM PST 7.22 2 0 Normal
01/29/2026 04 PM PST 7.22 2 0 Normal
01/29/2026 05 PM PST 7.22 2 0 Normal
01/29/2026 06 PM PST 7.22 2 0 Normal
01/29/2026 07 PM PST 7.22 2 0 Normal
01/29/2026 08 PM PST 7.21 2 - Normal
01/29/2026 09 PM PST 7.22 2 + Normal
01/29/2026 10 PM PST 7.22 2 0 Normal
01/29/2026 11 PM PST 7.22 2 0 Normal
01/30/2026 12 AM PST 7.22 2 0 Normal
01/30/2026 01 AM PST 7.21 2 - Normal
01/30/2026 02 AM PST 7.22 2 + Normal
01/30/2026 03 AM PST 7.21 2 - Normal
01/30/2026 04 AM PST 7.21 2 0 Normal
01/30/2026 05 AM PST 7.21 2 0 Normal
01/30/2026 06 AM PST 7.21 2 0 Normal
01/30/2026 07 AM PST 7.21 2 0 Normal
01/30/2026 08 AM PST 7.21 2 0 Normal
01/30/2026 09 AM PST 7.21 2 0 Normal
01/30/2026 10 AM PST 7.21 2 0 Normal
01/30/2026 11 AM PST 7.21 2 0 Normal
01/30/2026 12 PM PST 7.21 2 0 Normal
01/30/2026 01 PM PST 7.21 2 0 Normal
01/30/2026 02 PM PST 7.20 1 - Normal
01/30/2026 03 PM PST 7.21 2 + Normal
01/30/2026 04 PM PST 7.21 2 0 Normal
01/30/2026 05 PM PST 7.21 2 0 Normal
01/30/2026 06 PM PST 7.21 2 0 Normal
01/30/2026 07 PM PST 7.21 2 0 Normal
01/30/2026 08 PM PST 7.21 2 0 Normal
01/30/2026 09 PM PST 7.21 2 0 Normal
01/30/2026 10 PM PST 7.21 2 0 Normal
01/30/2026 11 PM PST 7.21 2 0 Normal
01/31/2026 12 AM PST 7.21 2 0 Normal
01/31/2026 01 AM PST 7.21 2 0 Normal
01/31/2026 02 AM PST 7.21 2 0 Normal
01/31/2026 03 AM PST 7.21 2 0 Normal
01/31/2026 04 AM PST 7.21 2 0 Normal
01/31/2026 05 AM PST 7.21 2 0 Normal
01/31/2026 06 AM PST 7.21 2 0 Normal
01/31/2026 07 AM PST 7.21 2 0 Normal
01/31/2026 08 AM PST 7.20 1 - Normal
01/31/2026 09 AM PST 7.21 2 + Normal
01/31/2026 10 AM PST 7.21 2 0 Normal
01/31/2026 11 AM PST 7.21 2 0 Normal
01/31/2026 12 PM PST 7.21 2 0 Normal
01/31/2026 01 PM PST 7.21 2 0 Normal
01/31/2026 02 PM PST 7.21 2 0 Normal
01/31/2026 03 PM PST 7.21 2 0 Normal
01/31/2026 04 PM PST 7.21 2 0 Normal
01/31/2026 05 PM PST 7.21 2 0 Normal
01/31/2026 06 PM PST 7.21 2 0 Normal
01/31/2026 07 PM PST 7.21 2 0 Normal
01/31/2026 08 PM PST 7.21 2 0 Normal
01/31/2026 09 PM PST 7.21 2 0 Normal
01/31/2026 10 PM PST 7.21 2 0 Normal
01/31/2026 11 PM PST 7.21 2 0 Normal
02/01/2026 12 AM PST 7.21 2 0 Normal
02/01/2026 01 AM PST 7.21 2 0 Normal
02/01/2026 02 AM PST 7.21 2 0 Normal
02/01/2026 03 AM PST 7.21 2 0 Normal
02/01/2026 04 AM PST 7.21 2 0 Normal
02/01/2026 05 AM PST 7.21 2 0 Normal
02/01/2026 06 AM PST 7.21 2 0 Normal
02/01/2026 07 AM PST 7.22 2 + Normal
#
# FORECAST
#
# Date & Time (Local) Stage (Feet) Flow (cfs) Trend Forecast Status
# ---------------------------------------------------------------------------------
02/01/2026 08 AM PST 7.22 2 Normal
02/01/2026 09 AM PST 7.22 2 0 Normal
02/01/2026 10 AM PST 7.22 2 0 Normal
02/01/2026 11 AM PST 7.22 2 0 Normal
02/01/2026 12 PM PST 7.21 2 - Normal
02/01/2026 01 PM PST 7.20 1 - Normal
02/01/2026 02 PM PST 7.19 1 - Normal
02/01/2026 03 PM PST 7.20 1 + Normal
02/01/2026 04 PM PST 7.20 1 0 Normal
02/01/2026 05 PM PST 7.20 1 0 Normal
02/01/2026 06 PM PST 7.20 1 0 Normal
02/01/2026 07 PM PST 7.20 1 0 Normal
02/01/2026 08 PM PST 7.20 1 0 Normal
02/01/2026 09 PM PST 7.20 1 0 Normal
02/01/2026 10 PM PST 7.20 1 0 Normal
02/01/2026 11 PM PST 7.20 1 0 Normal
02/02/2026 12 AM PST 7.20 1 0 Normal
02/02/2026 01 AM PST 7.20 1 0 Normal
02/02/2026 02 AM PST 7.20 1 0 Normal
02/02/2026 03 AM PST 7.20 1 0 Normal
02/02/2026 04 AM PST 7.20 1 0 Normal
02/02/2026 05 AM PST 7.20 1 0 Normal
02/02/2026 06 AM PST 7.20 1 0 Normal
02/02/2026 07 AM PST 7.20 1 0 Normal
02/02/2026 08 AM PST 7.20 1 0 Normal
02/02/2026 09 AM PST 7.20 1 0 Normal
02/02/2026 10 AM PST 7.19 1 - Normal
02/02/2026 11 AM PST 7.19 1 0 Normal
02/02/2026 12 PM PST 7.19 1 0 Normal
02/02/2026 01 PM PST 7.19 1 0 Normal
02/02/2026 02 PM PST 7.19 1 0 Normal
02/02/2026 03 PM PST 7.19 1 0 Normal
02/02/2026 04 PM PST 7.19 1 0 Normal
02/02/2026 05 PM PST 7.19 1 0 Normal
02/02/2026 06 PM PST 7.19 1 0 Normal
02/02/2026 07 PM PST 7.19 1 0 Normal
02/02/2026 08 PM PST 7.19 1 0 Normal
02/02/2026 09 PM PST 7.19 1 0 Normal
02/02/2026 10 PM PST 7.19 1 0 Normal
02/02/2026 11 PM PST 7.19 1 0 Normal
02/03/2026 12 AM PST 7.19 1 0 Normal
02/03/2026 01 AM PST 7.19 1 0 Normal
02/03/2026 02 AM PST 7.19 1 0 Normal
02/03/2026 03 AM PST 7.19 1 0 Normal
02/03/2026 04 AM PST 7.19 1 0 Normal
02/03/2026 05 AM PST 7.19 1 0 Normal
02/03/2026 06 AM PST 7.19 1 0 Normal
02/03/2026 07 AM PST 7.19 1 0 Normal
02/03/2026 08 AM PST 7.19 1 0 Normal
02/03/2026 09 AM PST 7.19 1 0 Normal
02/03/2026 10 AM PST 7.19 1 0 Normal
02/03/2026 11 AM PST 7.19 1 0 Normal
02/03/2026 12 PM PST 7.19 1 0 Normal
02/03/2026 01 PM PST 7.19 1 0 Normal
02/03/2026 02 PM PST 7.19 1 0 Normal
02/03/2026 03 PM PST 7.19 1 0 Normal
02/03/2026 04 PM PST 7.19 1 0 Normal
02/03/2026 05 PM PST 7.19 1 0 Normal
02/03/2026 06 PM PST 7.19 1 0 Normal
02/03/2026 07 PM PST 7.19 1 0 Normal
02/03/2026 08 PM PST 7.19 1 0 Normal
02/03/2026 09 PM PST 7.19 1 0 Normal
02/03/2026 10 PM PST 7.19 1 0 Normal
02/03/2026 11 PM PST 7.19 1 0 Normal
02/04/2026 12 AM PST 7.19 1 0 Normal
02/04/2026 01 AM PST 7.19 1 0 Normal
02/04/2026 02 AM PST 7.19 1 0 Normal
02/04/2026 03 AM PST 7.19 1 0 Normal
02/04/2026 04 AM PST 7.19 1 0 Normal
02/04/2026 05 AM PST 7.19 1 0 Normal
02/04/2026 06 AM PST 7.19 1 0 Normal
02/04/2026 07 AM PST 7.19 1 0 Normal
02/04/2026 08 AM PST 7.19 1 0 Normal
02/04/2026 09 AM PST 7.19 1 0 Normal
02/04/2026 10 AM PST 7.19 1 0 Normal
02/04/2026 11 AM PST 7.19 1 0 Normal
02/04/2026 12 PM PST 7.19 1 0 Normal
02/04/2026 01 PM PST 7.18 1 - Normal
02/04/2026 02 PM PST 7.18 1 0 Normal
02/04/2026 03 PM PST 7.18 1 0 Normal
02/04/2026 04 PM PST 7.18 1 0 Normal
02/04/2026 05 PM PST 7.18 1 0 Normal
02/04/2026 06 PM PST 7.18 1 0 Normal
02/04/2026 07 PM PST 7.18 1 0 Normal
02/04/2026 08 PM PST 7.18 1 0 Normal
02/04/2026 09 PM PST 7.18 1 0 Normal
02/04/2026 10 PM PST 7.18 1 0 Normal
02/04/2026 11 PM PST 7.18 1 0 Normal
02/05/2026 12 AM PST 7.18 1 0 Normal
02/05/2026 01 AM PST 7.18 1 0 Normal
02/05/2026 02 AM PST 7.18 1 0 Normal
02/05/2026 03 AM PST 7.18 1 0 Normal
02/05/2026 04 AM PST 7.18 1 0 Normal
02/05/2026 05 AM PST 7.18 1 0 Normal
02/05/2026 06 AM PST 7.18 1 0 Normal
02/05/2026 07 AM PST 7.18 1 0 Normal
02/05/2026 08 AM PST 7.18 1 0 Normal
02/05/2026 09 AM PST 7.18 1 0 Normal
02/05/2026 10 AM PST 7.18 1 0 Normal
02/05/2026 11 AM PST 7.18 1 0 Normal
02/05/2026 12 PM PST 7.18 1 0 Normal
02/05/2026 01 PM PST 7.18 1 0 Normal
02/05/2026 02 PM PST 7.18 1 0 Normal
02/05/2026 03 PM PST 7.18 1 0 Normal
02/05/2026 04 PM PST 7.18 1 0 Normal
02/05/2026 05 PM PST 7.18 1 0 Normal
02/05/2026 06 PM PST 7.18 1 0 Normal
02/05/2026 07 PM PST 7.18 1 0 Normal
02/05/2026 08 PM PST 7.18 1 0 Normal
02/05/2026 09 PM PST 7.18 1 0 Normal
02/05/2026 10 PM PST 7.18 1 0 Normal
02/05/2026 11 PM PST 7.18 1 0 Normal
02/06/2026 12 AM PST 7.18 1 0 Normal
02/06/2026 01 AM PST 7.18 1 0 Normal
02/06/2026 02 AM PST 7.18 1 0 Normal
02/06/2026 03 AM PST 7.18 1 0 Normal
02/06/2026 04 AM PST 7.18 1 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.
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