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| SANTA MARGARITA - YSIDORA (YDRC1) | ||||||||||||||||||
| Latitude: 33.31º N | Longitude: 117.35º W | Elevation: 75 Feet | ||||||||||||||||
| Location: San Diego County in CA | ||||||||||||||||||
| River Group: Southern California | ||||||||||||||||||
| Issuance Time: | Jul 09 2025 at 8:23 AM PDT |
| Please Note: | Ensemble forecasts produced by CNRFC only consider meteorological uncertainty and do not account for hydrologic uncertainty. Flow data on this product are unregulated / full natural flow. |
| 2025 Water Year Trend Plot |
| Location Photographs | ||
| ESRI™ Locator Map |
| Official 7 Day National Weather Service Forecast (CAZ043) |
| Tonight: Mostly clear This Evening and becoming partly cloudy. Patchy fog overnight. Lows 59 to 65. Areas of winds northwest 10 mph This Evening becoming light. Thursday: Partly cloudy with patchy fog in the morning and Becoming mostly sunny. Highs 75 to 79 near the coast to 83 to 86 inland. Areas of winds west to 10 mph. Thursday Night: Mostly clear in the evening and becoming partly cloudy overnight with patchy fog. Lows 59 to 65. Areas of winds southwest 10 mph in the evening becoming light. Friday: Patchy fog in the morning. Partly cloudy. Local visibility one quarter mile or less at times in the morning. Highs 71 to 75 near the coast to 79 inland. Areas of winds south 10 mph. Friday Night: Partly cloudy. Lows 57 to 63. Areas of winds southwest 10 mph in the evening becoming light. Saturday: Mostly cloudy in the morning and becoming mostly sunny. Highs 70 to 74 near the coast to 75 to 78 inland. Saturday Night: Mostly clear in the evening and becoming cloudy. Lows 56 to 63. Sunday: Cloudy in the morning and becoming mostly sunny. Highs 70 to 74 near the coast to 76 to 79 inland. Sunday Night: Mostly clear in the evening and becoming mostly cloudy. Lows 57 to 64. Monday: Cloudy in the morning and becoming partly cloudy. Highs 70 to 74 near the coast to 75 to 78 inland. Monday Night: Mostly clear in the evening and becoming mostly cloudy. Lows 58 to 63. Tuesday: Mostly cloudy in the morning and becoming partly cloudy. Highs 71 to 75 near the coast to 77 inland. Tuesday Night: Partly cloudy in the evening and becoming cloudy. Lows 58 to 64. Wednesday: Cloudy in the morning and becoming partly cloudy. Highs 71 to 75 near the coast to 78 inland. |
| Flood Impacts | |
| 16.0 Feet | Major flood, 37,000 cfs. Widespread inundation of Camp Pendleton with evacuations likely. Flood of Record Jan 16, 1993. |
| 13.33 Feet | Moderate flood stage, 17,000 cfs. Vandegrift Road is flooded for several miles downstream of the gage site. Stuart Mesa Road is flooded near the bridge. |
| 11.16 Feet | Minor flood stage, 8,000 cfs. Vandegrift Road has begun to flood downstream of the gage. Stuart Mesa Road closures can be expected. |
| 8.18 Feet | 2,500 cfs. The river has reached monitor stage. Personnel begin regular patrols along the levee. |