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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 10 2025 at 8:55 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 cloudy. Patchy fog overnight. Lows 58 to 64. Areas of winds west 10 mph This Evening becoming light. Friday: Mostly cloudy with patchy fog in the morning and becoming mostly sunny. Highs 71 to 74 near the coast to 80 inland. Areas of winds south 10 to 15 mph. Friday Night: Partly cloudy in the evening and becoming cloudy overnight with patchy fog. Lows 57 to 63. Areas of winds south 10 mph in the evening becoming light. Saturday: Cloudy with patchy fog in the morning and becoming mostly sunny. Highs 70 to 74 near the coast to 75 to 78 inland. Areas of winds south to 10 mph. Saturday Night: Mostly clear in the evening and becoming cloudy overnight with patchy fog. Lows 57 to 63. Areas of winds southwest 10 mph in the evening becoming light. Sunday: Cloudy with patchy fog 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 overnight with patchy fog. Lows 57 to 63. Monday: Cloudy with patchy fog in the morning and becoming mostly sunny. Highs 70 to 74 near the coast to 76 to 79 inland. Monday Night: Mostly clear in the evening and becoming mostly cloudy overnight with patchy fog. Lows 57 to 64. Tuesday: Mostly cloudy with patchy fog in the morning and Becoming mostly sunny. Highs 70 to 74 near the coast to 75 to 78 inland. Tuesday Night: Mostly clear in the evening and becoming cloudy overnight with patchy fog. Lows 56 to 63. Wednesday: Mostly cloudy with patchy fog in the morning and Becoming partly cloudy. Highs 70 to 74 near the coast to 75 to 78 inland. Wednesday Night: Mostly clear in the evening and becoming cloudy overnight with patchy fog. Lows 57 to 64. Thursday: Mostly cloudy with patchy fog in the morning and Becoming mostly sunny. Highs 70 to 74 near the coast to 77 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. |