Low-flow frequency and flow duration of selected South Carolina streams in the Pee Dee River basin through March 2007

Abstract

Short-term streamgaging stations for which record was extended, long-term index streamgaging stations, additional climatic years of record, and correlation coefficients for gaging stations where record was extended using MOVE.

Low-flow frequency and flow duration of selected South Carolina streams in the Saluda, Congaree, and Edisto River basins through March 2009

“…Therefore, low-flow statistics were computed for stations 02164000, 02165200, 02167582, 02169570, 02173051, 02174250, and 02175000 using the complete period of record for each station, respectively. Similar patterns also have been noted in the low-flow assessments for the Pee Dee River and Broad River basins (Feaster and Guimaraes, 2009;Guimaraes and Feaster, 2010).…”

“…Previous reports by Stallings (1967), Johnson and others (1968), Bloxham and others (1970), Bloxham (1976Bloxham ( , 1979Bloxham ( , 1981, Barker (1986), Zalants (1991a,b), Feaster and Guimaraes (2009), and Guimaraes and Feaster (2010), described the low-flow frequency and flow-duration streamflows for selected CR stations and partial-record (PR) stations in South Carolina. Stallings (1967) presented low-flow statistics for 61 CR stations and 83 other sites where flow was measured during the 1954 drought.…”

“…Zalants (1991b) provided estimates of annual minimum 1-, 3-, 7-, 14-, 30-, 60-, and 90-day average streamflows with recurrence intervals of 2 to 50 years, depending on the length of record, for 55 CR stations in South Carolina for which at least 5 years of unregulated daily mean streamflow data were available through the 1986 CY. Feaster and Guimaraes (2009), and Guimaraes and Feaster (2010), presented low-flow statistics for 17 and 23 CR stations in the Pee Dee and Broad River basins in South Carolina, respectively. Estimates are presented for the Pee Dee River basin through the 2006 CY and for the Broad River basin through the 2007 CY.…”

“…In addition, daily flow durations of the 5-to 95-percent exceedances were presented for most of these stations. Much of the general information for this report was taken directly from Feaster and Guimaraes (2009) and Guimaraes and Feaster (2010).…”

“…However, as with standard PR stations, similar techniques can be used to correlate daily mean flows at CR stations that have more than 5 years but less than 10 years of CR streamgaging data. In Feaster and Guimaraes (2009) and Guimaraes and Feasater (2010), such CR stations were referred to as PR stations and represented a third category of stations that were analyzed. Similar to the analyses at standard PR stations, only the 7Q2 and 7Q10 low-flow statistics were estimated at such CR stations.…”