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Georgia's low-flow Web site presents selected computed low-flow frequency data for stream sites in Georgia where suitable flow records were collected up to 1974. Results include data from 134 continuous-record gaging sites and 102 partial-record sites. The information on these web pages are from "Low Flow Frequency of Georgia Streams" (Carter and Putnam, 1978, U.S. Geological Survey Water-Resources Investigations Report 77-127).
The text below shows examples of the output for Georgia's low-flow frequency information for continuous and low-flow partial-record stations, respectively.
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Continuous-record site: Station type: continuous Period of record: Apr 1940 - Mar 1974 7Q10: 120 cfs; 30Q2: 250 cfs |
Low-flow partial-record site: Station type: partial Number of measurements: 14 7Q10: 12 cfs; 30Q2: 27 cfs |
Station type: Streamflow gages are categorized as
continuous record or low-flow partial record stations.
Continuous-record stations are particular stations on a stream where systematic observations of stream stage and discharge are obtained.
Low-flow partial-record stations are stations where periodic measurements are made during base-flow conditions (flow periods after storm runoff has ceased to be a factor in streamflow).
Period of record: The dates during which continuous streamflow data are collected.
Number of measurements: The number of low-flow measurements made at low-flow partial stations.
Q: Streamflow, in cubic feet per second (cfs).
7Q10: The streamflow that occurs over 7 consecutive days and has a 10-year recurrence interval period, or a 1 in 10 chance of occurring in any one year. Daily streamflows in the 7Q10 range are general indicators of prevalent drought conditions which normally cover large areas. 7Q10 values are also used by the State for regulating water withdrawals and discharges into streams.
30Q2 : The streamflow that occurs over 30 consecutive days and has a 2-year recurrence interval period, or a 1 in 2 chance of occurring in any one year. Daily streamflows in the 30Q2 range are general indicators of initial drought conditions which may cover large areas, and may be used by State regulators in determining water-use restrictions.
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USGS Water Resources for Georgia Select site by: Station number | Station name | County | Hydrologic unit | River basin This URL: http://nts4dgaatl.er.usgs.gov:80/lowflow/helplowflowstats.cfm Last updated: 08/30/2001 01:35:24 PM |
| Note: The information on these web pages are from
Carter. R.F., and Putnam, S.A., 1978, Low Flow Frequency of Georgia Streams: U.S. Geological Survey Water-Resources Investigations Report 77-127, 104 p.
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