Floodflow characteristics of Current River at Arkansas state highway 328 near Reyno, Arkansas

Arkansas State Highway 328 in Randolph County crosses Current River about 1.5 mi northwest of Reyno, Arkansas. A main channel bridge with a relief bridge on each side, five culverts, and a bridge on the west side of the valley were the existing flow structures prior to a December 1982 flood. After the December 1982 flood, 34 additional culverts were installed along the highway. The flood of December 3, 1982, which had a computed peak discharge of 85,300 cu ft/sec and a recurrence interval of about 8 years, caused considerable damage to the highway being reconstructed. The flood of April 1985, which had a discharge of 48,000 cu ft/sec and a recurrence interval of about 2 years, also caused damage to fill areas of the reconstructed highway. A hydraulic analysis was conducted for the 5-, 10-, 25-, 50- and 100-year flood and the floods of December 1982 and April 1985 to determine the river stages before and after Highway 328 was reconstructed. Results of the study indicate that the water surface along the upstream water surface elevations less than 0.1 ft. (USGS)