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Some of the most widespread flooding occurred in the Tar- Pamlico River Basin downstream from Louisburg (site 8, fig. 7). Record water levels were recorded at 11 of the 12 USGS stream- gaging stations in the Tar-Pamlico Basin (excluding site 18 on the Pamlico River, where previous high water levels have been in response to storm surge). Mea- sured flood flows on the Tar River and major tributaries downstream from site 9 at the Tar River Reservoir had recur- rence intervals in excess of 100 years, and several sites had recurrence intervals in excess of500 years (table 3), At Tarboro (site 14, fig. 7), where streamflow records have been collected Conetoe Creek near BetheL N.C. since 1897, the peak stage during this event was almost 10 feet higher than the previously recorded peak stage, which occurred in August 1940 (table 3; fig. 8). Water levels remained above flood stage at Tarboro for most of September and October (fig. 8). The maxi- mum flood flow at Tarboro in 1999 was almost double previ- ous maximum flow recorded at the site in more than 100 years. Flood recurrence intervals could not be determined at sites 15 (Conetoe Creek) and 17 (Chicod Creek) because flows at these sites were affected by backwater from the Tar River. An insuffi- cient period of record (greater than 10 years is needed) was available at sites 16 (Tar River Tar-Pamlico River Basin 45 4(1 35 :> ~ " c 30 > ~ << I" ~ 25 << ~ > c ~ 20 ~ ~15 c ;< c 10 o N.C. Highway 33 flooded by the Tar River '%' 00 ~ 00 ~ -................ "S;p~e~b;r 1999 p-e;k-;ag;' 4151';;" -...... -.. -..-; Previous maximum stage, 31.71 'eet, August 1940 National Weather Sef\lice Flood Stage, 19 feet 5 10 15 20 SEPTEMBER 25 10 31 Two ~1onths of Flooding in Eastern North Carolina. September-October 1999 15 OCTOBER 20 25 301 1999 Figure 8. Stage hydrograph far the Tar River at Tarbaro (site 14, fig, 7), September- October 1999,