Table 10: Summary of Discharges Peak Discharge (cfs) Drainage Area 1% Annual 1% Annual 0.2% (Square 10% Annual 4% Annual 2% Annual Chance Chance Annual Flooding Source Location Miles) Chance Chance Chance Existing Future Chance Just downstream of Culvert Creek 1.0 130 * 170 190 * 240 Smith Lane Confluence with Big Inundation River 1,058 77,200 * 107,000 122,000 132,000 143,000 Ocean 1.2 miles downstream Inundation River 980 73,100 86,800 101,000 116,000 119,000 136,000 of US Highway 27 2,000 feet Inundation River downstream of 3rd 930 70,500 82,360 97,100 111,000 115,000 130,000 Avenue 500 feet upstream of Inundation River 902 69,000 81,100 95,000 109,000 113,000 128,000 Main Street Confluence with North Fork Inundation Inundation River 879 67,700 * 93,200 107,000 114,00 125,000 River and South Fork Inundation River North Fork Just upstream of 137 18,100 * 24,000 27,000 * 31,600 Inundation River State Highway 42 South Fork Confluence with 598 51,100 * 69,700 79,600 * 93,300 Inundation River North Fork *Not calculated for this Flood Risk Project
Table 10: Summary of Discharges Peak Discharge (cfs) Flooding Source Location Drainage Area (Square Miles) 10% Annual Chance 4% Annual Chance 2% Annual Chance 1% Annual Chance Existing 1% Annual Chance Future 0.2% Annual Chance Culvert Creek Just downstream of Smith Lane 1.0 130 * 170 190 * 240 Inundation River Confluence with Big Ocean 1,058 77,200 * 107,000 122,000 132,000 143,000 Inundation River 1.2 miles downstream of US Highway 27 980 73,100 86,800 101,000 116,000 119,000 136,000 Inundation River 2,000 feet downstream of 3rd Avenue 930 70,500 82,360 97,100 111,000 115,000 130,000 Inundation River 500 feet upstream of Main Street 902 69,000 81,100 95,000 109,000 113,000 128,000 Inundation River Confluence with North Fork Inundation River and South Fork Inundation River 879 67,700 * 93,200 107,000 114,00 125,000 North Fork Inundation River Just upstream of State Highway 42 137 18,100 * 24,000 27,000 * 31,600 South Fork Inundation River Confluence with North Fork 598 51,100 * 69,700 79,600 * 93,300 *Not calculated for this Flood Risk Project
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