Streamflow
The USGS operated one stream gauge for ten years from 1971 to 1981 near Mission Viejo, California, specifically near the Crown Valley Parkway crossing, approximately 5 miles (8.0 km) above the confluence with Trabuco Creek and in total 8 miles (13 km) above where the water joins San Juan. This gauge recorded a peak flow of 5,150 cubic feet per second (146 m3/s) on 16 February 1980, with gauge height 7.6 feet (2.3 m). The second highest flow was the preceding year, which saw a flow of 2,445 cubic feet per second (69.2 m3/s), roughly half that of the highest recorded flow.
Read more about this topic: Oso Creek