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Technique for estimation of streamflow statistics in mineral areas of interest in Afghanistan

September 26, 2011

A technique for estimating streamflow statistics at ungaged stream sites in areas of mineral interest in Afghanistan using drainage-area-ratio relations of historical streamflow data was developed and is documented in this report. The technique can be used to estimate the following streamflow statistics at ungaged sites: (1) 7-day low flow with a 10-year recurrence interval, (2) 7-day low flow with a 2-year recurrence interval, (3) daily mean streamflow exceeded 90 percent of the time, (4) daily mean streamflow exceeded 80 percent of the time, (5) mean monthly streamflow for each month of the year, (6) mean annual streamflow, and (7) minimum monthly streamflow for each month of the year. Because they are based on limited historical data, the estimates of streamflow statistics at ungaged sites are considered preliminary.

Citation Information

Publication Year 2011
Title Technique for estimation of streamflow statistics in mineral areas of interest in Afghanistan
DOI 10.3133/ofr20111176
Authors Scott A. Olson, Thomas J. Mack
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Open-File Report
Series Number 2011-1176
Index ID ofr20111176
Record Source USGS Publications Warehouse
USGS Organization New Hampshire-Vermont Water Science Center