A Rapid, Low-Cost Technique for Estimating Peak Flow for Selected Flood Events

摘要

A regionalized streamflow estimation technique was developed for North Carolina and Virginia for estimating 2-, 10-, and 25-year return interval peak flows. Separate equations were generated for the mountain, piedmont, and coastal plain regions, and for urbanized watersheds. Comparison with previous techniques used in North Carolina indicated that the new equations produce more accurate peak discharge estimates in most instances. If return intervals, basin size, and lag are held constant, urban basins produce the largest discharge (followed by mountain, piedmont, and coastal plain).