2025-12-24T22:00:00-08:00
* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of Southwest California, including the following areas, Apple and Lucerne Valleys, Coachella Valley, Orange County Coastal Areas, Orange County Inland Areas, Riverside County Mountains, San Bernardino County Mountains, San Bernardino and Riverside County Valleys-The Inland Empire, San Gorgonio Pass near Banning and Santa Ana Mountains and Foothills. * WHEN...Through this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Mud and debris flow are possible near and in burn scars, including the Airport, Bridge and Line burn scars. * ADDITIONAL DETAILS... - An Atmospheric River will bring widespread moderate to heavy rain to the region today. The heaviest and most widespread rain is expected this morning through evening. Peak rainfall rates of 0.50 to 1 inch per hour are expected. There is a potential for locally heavier hourly rainfall rates to develop with convection embedded in the main rain band or in thunderstorms after the main band passes. Isolated heavy showers could continue into Thursday but impacts from any additional rain are expected to be more localized. Snow levels are expected to remain above 8000 feet during period of heaviest precipitation bringing a heightened risk of mud slides, debris flow, and areas of flash flooding in the San Bernardino county mountains. - https://www.weather.gov/safety/flood
Summary
The ideal streamflow range for this river is between 200 and 800 cubic feet per second (cfs). This flow range provides enough water to navigate the rapids while still maintaining a safe level of difficulty. The river is rated as a class III-IV, with some sections reaching class V during high water flows.
The segment mileage of the Santa Margarita River run is approximately 10 miles, starting at the Tenaja Falls trailhead and ending at the bridge near the De Luz Housing area. Along the way, rafters will encounter several challenging rapids, including Tenaja Falls, Upper and Lower Santa Margarita Falls, and the Narrows. These rapids are known for their technical difficulty, steep drops, and tight turns.
To ensure safety and preserve the natural environment, there are specific regulations in place for the Santa Margarita River. Rafting is only allowed during certain times of the year, typically between December and May when water levels are highest. Additionally, all rafters must wear a lifejacket and helmet, and no alcohol is allowed on the river.
Overall, the Santa Margarita River run offers a thrilling and challenging whitewater rafting experience for those who are up for the adventure. However, it is important to follow all regulations and safety guidelines to ensure a safe and enjoyable trip.
River Run Details
| Last Updated | 2025-06-28 |
| River Levels | 9 cfs (1.89 ft) |
| Percent of Normal | 145% |
| Status | |
| Class Level | iii-iv |
| Elevation | ft |
| Streamflow Discharge | cfs |
| Gauge Height | ft |
| Reporting Streamgage | USGS 11044000 |
Santa Margarita River
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