Streamflow Statistics Definitions
The StatLabel, as shown in the first column of the table below is given as the statistic name in the StreamStats output for ungaged sites. The actual names of the statistics are given in the Statistic Name column, and their definitions are given in the Definition column. Each statistic in the table below has an associated standard error of estimate that will be provided in the StreamStats output, if it is available. Streamflow statistics are determined for data-collection stations from a limited sample of data; therefore, the statistics are not known with exact precision. The standard error of estimate, in percent, is an indication of the accuracy of the statistic. The actual values of the streamflow statistics will be within the given standard errors of estimate approximately two-thirds of the time.
| StatLabel | Statistic Name | Definition |
| D1 | 1-Percent_Duration | Streamflow exceeded 1 percent of the time |
| D10 | 10-Percent_Duration | Streamflow exceeded 10 percent of the time |
| D15 | 15-Percent_Duration | Streamflow exceeded 15 percent of the time |
| D2 | 2-Percent_Duration | Streamflow exceeded 2 percent of the time |
| D20 | 20-Percent_Duration | Streamflow exceeded 20 percent of the time |
| D25 | 25-Percent_Duration | Streamflow exceeded 25 percent of the time |
| D3 | 3-Percent_Duration | Streamflow exceeded 3 percent of the time |
| D30 | 30-Percent_Duration | Streamflow exceeded 30 percent of the time |
| D35 | 35-Percent_Duration | Streamflow exceeded 35 percent of the time |
| D40 | 40-Percent_Duration | Streamflow exceeded 40 percent of the time |
| D45 | 45-Percent_Duration | Streamflow exceeded 45 percent of the time |
| D5 | 5-Percent_Duration | Streamflow exceeded 5 percent of the time |
| D50 | 50-Percent_Duration | Streamflow exceeded 50 percent of the time |
| D55 | 55-Percent_Duration | Streamflow exceeded 55 percent of the time |
| D60 | 60-Percent_Duration | Streamflow exceeded 60 percent of the time |
| D65 | 65-Percent_Duration | Streamflow exceeded 65 percent of the time |
| D7 | 7-Percent_Duration | Streamflow exceeded 7 percent of the time |
| D70
|
70-Percent_Duration | Streamflow exceeded 70 percent of the time |
| D75 | 75-Percent_Duration | Streamflow exceeded 75 percent of the time |
| D80 | 80-Percent_Duration | Streamflow exceeded 80 percent of the time |
| D85 | 85-Percent_Duration | Streamflow exceeded 85 percent of the time |
| D90 | 90-Percent_Duration | Streamflow exceeded 90 percent of the time |
| D93 | 93-Percent_Duration | Streamflow exceeded 93 percent of the time |
| D95 | 95-Percent_Duration | Streamflow exceeded 95 percent of the time |
| D97 | 97-Percent_Duration | Streamflow exceeded 97 percent of the time |
| D98 | 98-Percent_Duration | Streamflow exceeded 98 percent of the time |
| D99 | 99-Percent_Duration | Streamflow exceeded 99 percent of the time |
| DEPH25 | Flow_depth | Difference in water level between the 25-percent duration flow and the point of zero flow |
| DSQA | Annual_Flow_STD | Standard Deviation of Annual Flow |
| LOGMEANPK | Log_Mean_of_Annual_Peaks | Mean of logarithms base 10 of systematic annual peak floods |
| M10D1 | October_1-Percent_Duration | Streamflow exceeded 1 percent of the time |
| M10D10 | October_10-Percent_Duration | October streamflow exceeded 10 percent of October the time |
| M10D15 | October_15-Percent_Duration | October streamflow exceeded 15 percent of October the time |
| M10D2 | October_2-Percent_Duration | October streamflow exceeded 2 percent of October the time |
| M10D20 | October_20-Percent_Duration | October streamflow exceeded 20 percent of October the time |
| M10D25 | October_25-Percent_Duration | October streamflow exceeded 25 percent of October the time |
| M10D3 | October_3-Percent_Duration | October streamflow exceeded 3 percent of October the time |
| M10D30 | October_30-Percent_Duration | October streamflow exceeded 30 percent of October the time |
| M10D35 | October_35-Percent_Duration | October streamflow exceeded 35 percent of October the time |
| M10D40 | October_40-Percent_Duration | October streamflow exceeded 40 percent of October the time |
| M10D45 | October_45-Percent_Duration | October streamflow exceeded 45 percent of October the time |
| M10D5 | October_5-Percent_Duration | October streamflow exceeded 5 percent of October the time |
| M10D50 | October_50-Percent_Duration | October streamflow exceeded 50 percent of October the time |
| M10D55 | October_55-Percent_Duration | October streamflow exceeded 55 percent of October the time |
| M10D60 | October_60-Percent_Duration | October streamflow exceeded 60 percent of October the time |
| M10D65 | October_65-Percent_Duration | October streamflow exceeded 65 percent of October the time |
| M10D7 | October_7-Percent_Duration | October streamflow exceeded 7 percent of October the time |
| M10D70 | October_70-Percent_Duration | October streamflow exceeded 70 percent of October the time |
| M10D75 | October_75-Percent_Duration | October streamflow exceeded 75 percent of October the time |
| M10D80 | October_80-Percent_Duration | October streamflow exceeded 80 percent of October the time |
| M10D85 | October_85-Percent_Duration | October streamflow exceeded 85 percent of October the time |
| M10D90 | October_90-Percent_Duration | October streamflow exceeded 90 percent of October the time |
| M10D93 | October_93-Percent_Duration | October streamflow exceeded 93 percent of October the time |
| M10D95 | October_95-Percent_Duration | October streamflow exceeded 95 percent of October the time |
| M10D97 | October_97-Percent_Duration | October streamflow exceeded 97 percent of October the time |
| M10D98 | October_98-Percent_Duration | October streamflow exceeded 98 percent of October the time |
| M10D99 | October_99-Percent_Duration | October streamflow exceeded 99 percent of October the time |
| M11D1 | November_1-Percent_Duration | Streamflow exceeded 1 percent of the time |
| M11D10 | November_10-Percent_Duration | November streamflow exceeded 10 percent of November the time |
| M11D15 | November_15-Percent_Duration | November streamflow exceeded 15 percent of November the time |
| M11D2 | November_2-Percent_Duration | November streamflow exceeded 2 percent of November the time |
| M11D20 | November_20-Percent_Duration | November streamflow exceeded 20 percent of November the time |
| M11D25 | November_25-Percent_Duration | November streamflow exceeded 25 percent of November the time |
| M11D3 | November_3-Percent_Duration | November streamflow exceeded 3 percent of November the time |
| M11D30 | November_30-Percent_Duration | November streamflow exceeded 30 percent of November the time |
| M11D35 | November_35-Percent_Duration | November streamflow exceeded 35 percent of November the time |
| M11D40 | November_40-Percent_Duration | November streamflow exceeded 40 percent of November the time |
| M11D45 | November_45-Percent_Duration | November streamflow exceeded 45 percent of November the time |
| M11D5 | November_5-Percent_Duration | November streamflow exceeded 5 percent of November the time |
| M11D50 | November_50-Percent_Duration | November streamflow exceeded 50 percent of November the time |
| M11D55 | November_55-Percent_Duration | November streamflow exceeded 55 percent of November the time |
| M11D60 | November_60-Percent_Duration | November streamflow exceeded 60 percent of November the time |
| M11D65 | November_65-Percent_Duration | November streamflow exceeded 65 percent of November the time |
| M11D7 | November_7-Percent_Duration | November streamflow exceeded 7 percent of November the time |
| M11D70 | November_70-Percent_Duration | November streamflow exceeded 70 percent of November the time |
| M11D75 | November_75-Percent_Duration | November streamflow exceeded 75 percent of November the time |
| M11D80 | November_80-Percent_Duration | November streamflow exceeded 80 percent of November the time |
| M11D85 | November_85-Percent_Duration | November streamflow exceeded 85 percent of November the time |
| M11D90 | November_90-Percent_Duration | November streamflow exceeded 90 percent of November the time |
| M11D93 | November_93-Percent_Duration | November streamflow exceeded 93 percent of November the time |
| M11D95 | November_95-Percent_Duration | November streamflow exceeded 95 percent of November the time |
| M11D97 | November_97-Percent_Duration | November streamflow exceeded 97 percent of November the time |
| M11D98 | November_98-Percent_Duration | November streamflow exceeded 98 percent of November the time |
| M11D99 | November_99-Percent_Duration | November streamflow exceeded 99 percent of November the time |
| M12D1 | December_1-Percent_Duration | Streamflow exceeded 1 percent of the time |
| M12D10 | December_10-Percent_Duration | December streamflow exceeded 10 percent of December the time |
| M12D15 | December_15-Percent_Duration | December streamflow exceeded 15 percent of December the time |
| M12D2 | December_2-Percent_Duration | December streamflow exceeded 2 percent of December the time |
| M12D20 | December_20-Percent_Duration | December streamflow exceeded 20 percent of December the time |
| M12D25 | December_25-Percent_Duration | December streamflow exceeded 25 percent of December the time |
| M12D3 | December_3-Percent_Duration | December streamflow exceeded 3 percent of December the time |
| M12D30 | December_30-Percent_Duration | December streamflow exceeded 30 percent of December the time |
| M12D35 | December_35-Percent_Duration | December streamflow exceeded 35 percent of December the time |
| M12D40 | December_40-Percent_Duration | December streamflow exceeded 40 percent of December the time |
| M12D45 | December_45-Percent_Duration | December streamflow exceeded 45 percent of December the time |
| M12D5 | December_5-Percent_Duration | December streamflow exceeded 5 percent of December the time |
| M12D50 | December_50-Percent_Duration | December streamflow exceeded 50 percent of December the time |
| M12D55 | December_55-Percent_Duration | December streamflow exceeded 55 percent of December the time |
| M12D60 | December_60-Percent_Duration | December streamflow exceeded 60 percent of December the time |
| M12D65 | December_65-Percent_Duration | December streamflow exceeded 65 percent of December the time |
| M12D7 | December_7-Percent_Duration | December streamflow exceeded 7 percent of December the time |
| M12D70 | December_70-Percent_Duration | December streamflow exceeded 70 percent of December the time |
| M12D75 | December_75-Percent_Duration | December streamflow exceeded 75 percent of December the time |
| M12D80 | December_80-Percent_Duration | December streamflow exceeded 80 percent of December the time |
| M12D85 | December_85-Percent_Duration | December streamflow exceeded 85 percent of December the time |
| M12D90 | December_90-Percent_Duration | December streamflow exceeded 90 percent of December the time |
| M12D93 | December_93-Percent_Duration | December streamflow exceeded 93 percent of December the time |
| M12D95 | December_95-Percent_Duration | December streamflow exceeded 95 percent of December the time |
| M12D97 | December_97-Percent_Duration | December streamflow exceeded 97 percent of December the time |
| M12D98 | December_98-Percent_Duration | December streamflow exceeded 98 percent of December the time |
| M12D99 | December_99-Percent_Duration | December streamflow exceeded 99 percent of December the time |
| M14D10Y | 14-Day_10-Year_Low_Flow | 14-Day mean low-flow that occurs on average once in 10 years |
| M14D20Y | 14-Day_20-Year_Low_Flow | 14-Day mean low-flow that occurs on average once in 20 years |
| M14D2Y | 14-Day_2-Year_Low_Flow | 14-Day mean low-flow that occurs on average once in 2 years |
| M14D5Y | 14-Day_5-Year_Low_Flow | 14-Day mean low-flow that occurs on average once in 5 years |
| M1D1 | January_1-Percent_Duration | Streamflow exceeded 1 percent of the time |
| M1D10 | January_10-Percent_Duration | January streamflow exceeded 10 percent of January the time |
| M1D10Y | 1-Day_10-Year_Low_Flow | 1-Day mean low-flow that occurs on average once in 10 years |
| M1D15 | January_15-Percent_Duration | January streamflow exceeded 15 percent of January the time |
| M1D2 | January_2-Percent_Duration | January streamflow exceeded 2 percent of January the time |
| M1D20 | January_20-Percent_Duration | January streamflow exceeded 20 percent of January the time |
| M1D20Y | 1-Day_20-Year_Low_Flow | 1-Day mean low-flow that occurs on average once in 20 years |
| M1D25 | January_25-Percent_Duration | January streamflow exceeded 25 percent of January the time |
| M1D2Y | 1-Day_2-Year_Low_Flow | 1-Day mean low-flow that occurs on average once in 2 years |
| M1D3 | January_3-Percent_Duration | January streamflow exceeded 3 percent of January the time |
| M1D30 | January_30-Percent_Duration | January streamflow exceeded 30 percent of January the time |
| M1D35 | January_35-Percent_Duration | January streamflow exceeded 35 percent of January the time |
| M1D40 | January_40-Percent_Duration | January streamflow exceeded 40 percent of January the time |
| M1D45 | January_45-Percent_Duration | January streamflow exceeded 45 percent of January the time |
| M1D5 | January_5-Percent_Duration | January streamflow exceeded 5 percent of January the time |
| M1D50 | January_50-Percent_Duration | January streamflow exceeded 50 percent of January the time |
| M1D55 | January_55-Percent_Duration | January streamflow exceeded 55 percent of January the time |
| M1D5Y | 1-Day_5-Year_Low_Flow | 1-Day mean low-flow that occurs on average once in 5 years |
| M1D60 | January_60-Percent_Duration | January streamflow exceeded 60 percent of January the time |
| M1D65 | January_65-Percent_Duration | January streamflow exceeded 65 percent of January the time |
| M1D7 | January_7-Percent_Duration | January streamflow exceeded 7 percent of January the time |
| M1D70 | January_70-Percent_Duration | January streamflow exceeded 70 percent of January the time |
| M1D75 | January_75-Percent_Duration | January streamflow exceeded 75 percent of January the time |
| M1D80 | January_80-Percent_Duration | January streamflow exceeded 80 percent of January the time |
| M1D85 | January_85-Percent_Duration | January streamflow exceeded 85 percent of January the time |
| M1D90 | January_90-Percent_Duration | January streamflow exceeded 90 percent of January the time |
| M1D93 | January_93-Percent_Duration | January streamflow exceeded 93 percent of January the time |
| M1D95 | January_95-Percent_Duration | January streamflow exceeded 95 percent of January the time |
| M1D97 | January_97-Percent_Duration | January streamflow exceeded 97 percent of January the time |
| M1D98 | January_98-Percent_Duration | January streamflow exceeded 98 percent of January the time |
| M1D99 | January_99-Percent_Duration | January streamflow exceeded 99 percent of January the time |
| M2D1 | February_1-Percent_Duration | Streamflow exceeded 1 percent of the time |
| M2D10 | February_10-Percent_Duration | February streamflow exceeded 10 percent of February the time |
| M2D15 | February_15-Percent_Duration | February streamflow exceeded 15 percent of February the time |
| M2D2 | February_2-Percent_Duration | February streamflow exceeded 2 percent of February the time |
| M2D20 | February_20-Percent_Duration | February streamflow exceeded 20 percent of February the time |
| M2D25 | February_25-Percent_Duration | February streamflow exceeded 25 percent of February the time |
| M2D3 | February_3-Percent_Duration | February streamflow exceeded 3 percent of February the time |
| M2D30 | February_30-Percent_Duration | February streamflow exceeded 30 percent of February the time |
| M2D35 | February_35-Percent_Duration | February streamflow exceeded 35 percent of February the time |
| M2D40 | February_40-Percent_Duration | February streamflow exceeded 40 percent of February the time |
| M2D45 | February_45-Percent_Duration | February streamflow exceeded 45 percent of February the time |
| M2D5 | February_5-Percent_Duration | February streamflow exceeded 5 percent of February the time |
| M2D50 | February_50-Percent_Duration | February streamflow exceeded 50 percent of February the time |
| M2D55 | February_55-Percent_Duration | February streamflow exceeded 55 percent of February the time |
| M2D60 | February_60-Percent_Duration | February streamflow exceeded 60 percent of February the time |
| M2D65 | February_65-Percent_Duration | February streamflow exceeded 65 percent of February the time |
| M2D7 | February_7-Percent_Duration | February streamflow exceeded 7 percent of February the time |
| M2D70 | February_70-Percent_Duration | February streamflow exceeded 70 percent of February the time |
| M2D75 | February_75-Percent_Duration | February streamflow exceeded 75 percent of February the time |
| M2D80 | February_80-Percent_Duration | February streamflow exceeded 80 percent of February the time |
| M2D85 | February_85-Percent_Duration | February streamflow exceeded 85 percent of February the time |
| M2D90 | February_90-Percent_Duration | February streamflow exceeded 90 percent of February the time |
| M2D93 | February_93-Percent_Duration | February streamflow exceeded 93 percent of February the time |
| M2D95 | February_95-Percent_Duration | February streamflow exceeded 95 percent of February the time |
| M2D97 | February_97-Percent_Duration | February streamflow exceeded 97 percent of February the time |
| M2D98 | February_98-Percent_Duration | February streamflow exceeded 98 percent of February the time |
| M2D99 | February_99-Percent_Duration | February streamflow exceeded 99 percent of February the time |
| M30D10Y | 30-Day_10-Year_Low_Flow | 30-Day mean low-flow that occurs on average once in 10 years |
| M30D20Y | 30-Day_20-Year_Low_Flow | 30-Day mean low-flow that occurs on average once in 20 years |
| M30D2Y | 30-Day_2-Year_Low_Flow | 30-Day mean low-flow that occurs on average once in 2 years |
| M30D5Y | 30-Day_5-Year_Low_Flow | 30-Day mean low-flow that occurs on average once in 5 years |
| M3D1 | March_1-Percent_Duration | Streamflow exceeded 1 percent of the time |
| M3D10 | March_10-Percent_Duration | March streamflow exceeded 10 percent of March the time |
| M3D10Y | 3-Day_10-Year_Low_Flow | 3-Day mean low-flow that occurs on average once in 10 years |
| M3D15 | March_15-Percent_Duration | March streamflow exceeded 15 percent of March the time |
| M3D2 | March_2-Percent_Duration | March streamflow exceeded 2 percent of March the time |
| M3D20 | March_20-Percent_Duration | March streamflow exceeded 20 percent of March the time |
| M3D20Y | 3-Day_20-Year_Low_Flow | 3-Day mean low-flow that occurs on average once in 20 years |
| M3D25 | March_25-Percent_Duration | March streamflow exceeded 25 percent of March the time |
| M3D2Y | 3-Day_2-Year_Low_Flow | 3-Day mean low-flow that occurs on average once in 2 years |
| M3D3 | March_3-Percent_Duration | March streamflow exceeded 3 percent of March the time |
| M3D30 | March_30-Percent_Duration | March streamflow exceeded 30 percent of March the time |
| M3D35 | March_35-Percent_Duration | March streamflow exceeded 35 percent of March the time |
| M3D40 | March_40-Percent_Duration | March streamflow exceeded 40 percent of March the time |
| M3D45 | March_45-Percent_Duration | March streamflow exceeded 45 percent of March the time |
| M3D5 | March_5-Percent_Duration | March streamflow exceeded 5 percent of March the time |
| M3D50 | March_50-Percent_Duration | March streamflow exceeded 50 percent of March the time |
| M3D55 | March_55-Percent_Duration | March streamflow exceeded 55 percent of March the time |
| M3D5Y | 3-Day_5-Year_Low_Flow | 3-Day mean low-flow that occurs on average once in 5 years |
| M3D60 | March_60-Percent_Duration | March streamflow exceeded 60 percent of March the time |
| M3D65 | March_65-Percent_Duration | March streamflow exceeded 65 percent of March the time |
| M3D7 | March_7-Percent_Duration | March streamflow exceeded 7 percent of March the time |
| M3D70 | March_70-Percent_Duration | March streamflow exceeded 70 percent of March the time |
| M3D75 | March_75-Percent_Duration | March streamflow exceeded 75 percent of March the time |
| M3D80 | March_80-Percent_Duration | March streamflow exceeded 80 percent of March the time |
| M3D85 | March_85-Percent_Duration | March streamflow exceeded 85 percent of March the time |
| M3D90 | March_90-Percent_Duration | March streamflow exceeded 90 percent of March the time |
| M3D93 | March_93-Percent_Duration | March streamflow exceeded 93 percent of March the time |
| M3D95 | March_95-Percent_Duration | March streamflow exceeded 95 percent of March the time |
| M3D97 | March_97-Percent_Duration | March streamflow exceeded 97 percent of March the time |
| M3D98 | March_98-Percent_Duration | March streamflow exceeded 98 percent of March the time |
| M3D99 | March_99-Percent_Duration | March streamflow exceeded 99 percent of March the time |
| M4D1 | April_1-Percent_Duration | Streamflow exceeded 1 percent of the time |
| M4D10 | April_10-Percent_Duration | April streamflow exceeded 10 percent of April the time |
| M4D15 | April_15-Percent_Duration | April streamflow exceeded 15 percent of April the time |
| M4D2 | April_2-Percent_Duration | April streamflow exceeded 2 percent of April the time |
| M4D20 | April_20-Percent_Duration | April streamflow exceeded 20 percent of April the time |
| M4D25 | April_25-Percent_Duration | April streamflow exceeded 25 percent of April the time |
| M4D3 | April_3-Percent_Duration | April streamflow exceeded 3 percent of April the time |
| M4D30 | April_30-Percent_Duration | April streamflow exceeded 30 percent of April the time |
| M4D35 | April_35-Percent_Duration | April streamflow exceeded 35 percent of April the time |
| M4D40 | April_40-Percent_Duration | April streamflow exceeded 40 percent of April the time |
| M4D45 | April_45-Percent_Duration | April streamflow exceeded 45 percent of April the time |
| M4D5 | April_5-Percent_Duration | April streamflow exceeded 5 percent of April the time |
| M4D50 | April_50-Percent_Duration | April streamflow exceeded 50 percent of April the time |
| M4D55 | April_55-Percent_Duration | April streamflow exceeded 55 percent of April the time |
| M4D60 | April_60-Percent_Duration | April streamflow exceeded 60 percent of April the time |
| M4D65 | April_65-Percent_Duration | April streamflow exceeded 65 percent of April the time |
| M4D7 | April_7-Percent_Duration | April streamflow exceeded 7 percent of April the time |
| M4D70 | April_70-Percent_Duration | April streamflow exceeded 70 percent of April the time |
| M4D75 | April_75-Percent_Duration | April streamflow exceeded 75 percent of April the time |
| M4D80 | April_80-Percent_Duration | April streamflow exceeded 80 percent of April the time |
| M4D85 | April_85-Percent_Duration | April streamflow exceeded 85 percent of April the time |
| M4D90 | April_90-Percent_Duration | April streamflow exceeded 90 percent of April the time |
| M4D93 | April_93-Percent_Duration | April streamflow exceeded 93 percent of April the time |
| M4D95 | April_95-Percent_Duration | April streamflow exceeded 95 percent of April the time |
| M4D97 | April_97-Percent_Duration | April streamflow exceeded 97 percent of April the time |
| M4D98 | April_98-Percent_Duration | April streamflow exceeded 98 percent of April the time |
| M4D99 | April_99-Percent_Duration | April streamflow exceeded 99 percent of April the time |
| M5D1 | May_1-Percent_Duration | Streamflow exceeded 1 percent of the time |
| M5D10 | May_10-Percent_Duration | May streamflow exceeded 10 percent of May the time |
| M5D15 | May_15-Percent_Duration | May streamflow exceeded 15 percent of May the time |
| M5D2 | May_2-Percent_Duration | May streamflow exceeded 2 percent of May the time |
| M5D20 | May_20-Percent_Duration | May streamflow exceeded 20 percent of May the time |
| M5D25 | May_25-Percent_Duration | May streamflow exceeded 25 percent of May the time |
| M5D3 | May_3-Percent_Duration | May streamflow exceeded 3 percent of May the time |
| M5D30 | May_30-Percent_Duration | May streamflow exceeded 30 percent of May the time |
| M5D35 | May_35-Percent_Duration | May streamflow exceeded 35 percent of May the time |
| M5D40 | May_40-Percent_Duration | May streamflow exceeded 40 percent of May the time |
| M5D45 | May_45-Percent_Duration | May streamflow exceeded 45 percent of May the time |
| M5D5 | May_5-Percent_Duration | May streamflow exceeded 5 percent of May the time |
| M5D50 | May_50-Percent_Duration | May streamflow exceeded 50 percent of May the time |
| M5D55 | May_55-Percent_Duration | May streamflow exceeded 55 percent of May the time |
| M5D60 | May_60-Percent_Duration | May streamflow exceeded 60 percent of May the time |
| M5D65 | May_65-Percent_Duration | May streamflow exceeded 65 percent of May the time |
| M5D7 | May_7-Percent_Duration | May streamflow exceeded 7 percent of May the time |
| M5D70 | May_70-Percent_Duration | May streamflow exceeded 70 percent of May the time |
| M5D75 | May_75-Percent_Duration | May streamflow exceeded 75 percent of May the time |
| M5D80 | May_80-Percent_Duration | May streamflow exceeded 80 percent of May the time |
| M5D85 | May_85-Percent_Duration | May streamflow exceeded 85 percent of May the time |
| M5D90 | May_90-Percent_Duration | May streamflow exceeded 90 percent of May the time |
| M5D93 | May_93-Percent_Duration | May streamflow exceeded 93 percent of May the time |
| M5D95 | May_95-Percent_Duration | May streamflow exceeded 95 percent of May the time |
| M5D97 | May_97-Percent_Duration | May streamflow exceeded 97 percent of May the time |
| M5D98 | May_98-Percent_Duration | May streamflow exceeded 98 percent of May the time |
| M5D99 | May_99-Percent_Duration | May streamflow exceeded 99 percent of May the time |
| M6D1 | June_1-Percent_Duration | Streamflow exceeded 1 percent of the time |
| M6D10 | June_10-Percent_Duration | June streamflow exceeded 10 percent of June the time |
| M6D15 | June_15-Percent_Duration | June streamflow exceeded 15 percent of June the time |
| M6D2 | June_2-Percent_Duration | June streamflow exceeded 2 percent of June the time |
| M6D20 | June_20-Percent_Duration | June streamflow exceeded 20 percent of June the time |
| M6D25 | June_25-Percent_Duration | June streamflow exceeded 25 percent of June the time |
| M6D3 | June_3-Percent_Duration | June streamflow exceeded 3 percent of June the time |
| M6D30 | June_30-Percent_Duration | June streamflow exceeded 30 percent of June the time |
| M6D35 | June_35-Percent_Duration | June streamflow exceeded 35 percent of June the time |
| M6D40 | June_40-Percent_Duration | June streamflow exceeded 40 percent of June the time |
| M6D45 | June_45-Percent_Duration | June streamflow exceeded 45 percent of June the time |
| M6D5 | June_5-Percent_Duration | June streamflow exceeded 5 percent of June the time |
| M6D50 | June_50-Percent_Duration | June streamflow exceeded 50 percent of June the time |
| M6D55 | June_55-Percent_Duration | June streamflow exceeded 55 percent of June the time |
| M6D60 | June_60-Percent_Duration | June streamflow exceeded 60 percent of June the time |
| M6D65 | June_65-Percent_Duration | June streamflow exceeded 65 percent of June the time |
| M6D7 | June_7-Percent_Duration | June streamflow exceeded 7 percent of June the time |
| M6D70 | June_70-Percent_Duration | June streamflow exceeded 70 percent of June the time |
| M6D75 | June_75-Percent_Duration | June streamflow exceeded 75 percent of June the time |
| M6D80 | June_80-Percent_Duration | June streamflow exceeded 80 percent of June the time |
| M6D85 | June_85-Percent_Duration | June streamflow exceeded 85 percent of June the time |
| M6D90 | June_90-Percent_Duration | June streamflow exceeded 90 percent of June the time |
| M6D93 | June_93-Percent_Duration | June streamflow exceeded 93 percent of June the time |
| M6D95 | June_95-Percent_Duration | June streamflow exceeded 95 percent of June the time |
| M6D97 | June_97-Percent_Duration | June streamflow exceeded 97 percent of June the time |
| M6D98 | June_98-Percent_Duration | June streamflow exceeded 98 percent of June the time |
| M6D99 | June_99-Percent_Duration | June streamflow exceeded 99 percent of June the time |
| M7D1 | July_1-Percent_Duration | Streamflow exceeded 1 percent of the time |
| M7D10 | July_10-Percent_Duration | July streamflow exceeded 10 percent of July the time |
| M7D10Y | 7-Day_10-Year_Low_Flow | 7-Day mean low-flow that occurs on average once in 10 years |
| M7D15 | July_15-Percent_Duration | July streamflow exceeded 15 percent of July the time |
| M7D2 | July_2-Percent_Duration | July streamflow exceeded 2 percent of July the time |
| M7D20 | July_20-Percent_Duration | July streamflow exceeded 20 percent of July the time |
| M7D20Y | 7-Day_20-Year_Low_Flow | 7-Day mean low-flow that occurs on average once in 20 years |
| M7D25 | July_25-Percent_Duration | July streamflow exceeded 25 percent of July the time |
| M7D2Y | 7-Day_2-Year_Low_Flow | 7-Day mean low-flow that occurs on average once in 2 years |
| M7D3 | July_3-Percent_Duration | July streamflow exceeded 3 percent of July the time |
| M7D30 | July_30-Percent_Duration | July streamflow exceeded 30 percent of July the time |
| M7D35 | July_35-Percent_Duration | July streamflow exceeded 35 percent of July the time |
| M7D40 | July_40-Percent_Duration | July streamflow exceeded 40 percent of July the time |
| M7D45 | July_45-Percent_Duration | July streamflow exceeded 45 percent of July the time |
| M7D5 | July_5-Percent_Duration | July streamflow exceeded 5 percent of July the time |
| M7D50 | July_50-Percent_Duration | July streamflow exceeded 50 percent of July the time |
| M7D55 | July_55-Percent_Duration | July streamflow exceeded 55 percent of July the time |
| M7D5Y | 7-Day_5-Year_Low_Flow | 7-Day mean low-flow that occurs on average once in 5 years |
| M7D60 | July_60-Percent_Duration | July streamflow exceeded 60 percent of July the time |
| M7D65 | July_65-Percent_Duration | July streamflow exceeded 65 percent of July the time |
| M7D7 | July_7-Percent_Duration | July streamflow exceeded 7 percent of July the time |
| M7D70 | July_70-Percent_Duration | July streamflow exceeded 70 percent of July the time |
| M7D75 | July_75-Percent_Duration | July streamflow exceeded 75 percent of July the time |
| M7D80 | July_80-Percent_Duration | July streamflow exceeded 80 percent of July the time |
| M7D85 | July_85-Percent_Duration | July streamflow exceeded 85 percent of July the time |
| M7D90 | July_90-Percent_Duration | July streamflow exceeded 90 percent of July the time |
| M7D93 | July_93-Percent_Duration | July streamflow exceeded 93 percent of July the time |
| M7D95 | July_95-Percent_Duration | July streamflow exceeded 95 percent of July the time |
| M7D97 | July_97-Percent_Duration | July streamflow exceeded 97 percent of July the time |
| M7D98 | July_98-Percent_Duration | July streamflow exceeded 98 percent of July the time |
| M7D99 | July_99-Percent_Duration | July streamflow exceeded 99 percent of July the time |
| M8D1 | August_1-Percent_Duration | Streamflow exceeded 1 percent of the time |
| M8D10 | August_10-Percent_Duration | August streamflow exceeded 10 percent of August the time |
| M8D15 | August_15-Percent_Duration | August streamflow exceeded 15 percent of August the time |
| M8D2 | August_2-Percent_Duration | August streamflow exceeded 2 percent of August the time |
| M8D20 | August_20-Percent_Duration | August streamflow exceeded 20 percent of August the time |
| M8D25 | August_25-Percent_Duration | August streamflow exceeded 25 percent of August the time |
| M8D3 | August_3-Percent_Duration | August streamflow exceeded 3 percent of August the time |
| M8D30 | August_30-Percent_Duration | August streamflow exceeded 30 percent of August the time |
| M8D35 | August_35-Percent_Duration | August streamflow exceeded 35 percent of August the time |
| M8D40 | August_40-Percent_Duration | August streamflow exceeded 40 percent of August the time |
| M8D45 | August_45-Percent_Duration | August streamflow exceeded 45 percent of August the time |
| M8D5 | August_5-Percent_Duration | August streamflow exceeded 5 percent of August the time |
| M8D50 | August_50-Percent_Duration | August streamflow exceeded 50 percent of August the time |
| M8D55 | August_55-Percent_Duration | August streamflow exceeded 55 percent of August the time |
| M8D60 | August_60-Percent_Duration | August streamflow exceeded 60 percent of August the time |
| M8D65 | August_65-Percent_Duration | August streamflow exceeded 65 percent of August the time |
| M8D7 | August_7-Percent_Duration | August streamflow exceeded 7 percent of August the time |
| M8D70 | August_70-Percent_Duration | August streamflow exceeded 70 percent of August the time |
| M8D75 | August_75-Percent_Duration | August streamflow exceeded 75 percent of August the time |
| M8D80 | August_80-Percent_Duration | August streamflow exceeded 80 percent of August the time |
| M8D85 | August_85-Percent_Duration | August streamflow exceeded 85 percent of August the time |
| M8D90 | August_90-Percent_Duration | August streamflow exceeded 90 percent of August the time |
| M8D93 | August_93-Percent_Duration | August streamflow exceeded 93 percent of August the time |
| M8D95 | August_95-Percent_Duration | August streamflow exceeded 95 percent of August the time |
| M8D97 | August_97-Percent_Duration | August streamflow exceeded 97 percent of August the time |
| M8D98 | August_98-Percent_Duration | August streamflow exceeded 98 percent of August the time |
| M8D99 | August_99-Percent_Duration | August streamflow exceeded 99 percent of August the time |
| M90D10Y | 90-Day_10-Year_Low_Flow | 90-Day mean low-flow that occurs on average once in 10 years |
| M90D20Y | 90-Day_20-Year_Low_Flow | 90-Day mean low-flow that occurs on average once in 20 years |
| M90D2Y | 90-Day_2-Year_Low_Flow | 90-Day mean low-flow that occurs on average once in 2 years |
| M90D5Y | 90-Day_5-Year_Low_Flow | 90-Day mean low-flow that occurs on average once in 5 years |
| M9D1 | September_1-Percent_Duration | Streamflow exceeded 1 percent of the time |
| M9D10 | September_10-Percent_Duration | September streamflow exceeded 10 percent of September the time |
| M9D15 | September_15-Percent_Duration | September streamflow exceeded 15 percent of September the time |
| M9D2 | September_2-Percent_Duration | September streamflow exceeded 2 percent of September the time |
| M9D20 | September_20-Percent_Duration | September streamflow exceeded 20 percent of September the time |
| M9D25 | September_25-Percent_Duration | September streamflow exceeded 25 percent of September the time |
| M9D3 | September_3-Percent_Duration | September streamflow exceeded 3 percent of September the time |
| M9D30 | September_30-Percent_Duration | September streamflow exceeded 30 percent of September the time |
| M9D35 | September_35-Percent_Duration | September streamflow exceeded 35 percent of September the time |
| M9D40 | September_40-Percent_Duration | September streamflow exceeded 40 percent of September the time |
| M9D45 | September_45-Percent_Duration | September streamflow exceeded 45 percent of September the time |
| M9D5 | September_5-Percent_Duration | September streamflow exceeded 5 percent of September the time |
| M9D50 | September_50-Percent_Duration | September streamflow exceeded 50 percent of September the time |
| M9D55 | September_55-Percent_Duration | September streamflow exceeded 55 percent of September the time |
| M9D60 | September_60-Percent_Duration | September streamflow exceeded 60 percent of September the time |
| M9D65 | September_65-Percent_Duration | September streamflow exceeded 65 percent of September the time |
| M9D7 | September_7-Percent_Duration | September streamflow exceeded 7 percent of September the time |
| M9D70 | September_70-Percent_Duration | September streamflow exceeded 70 percent of September the time |
| M9D75 | September_75-Percent_Duration | September streamflow exceeded 75 percent of September the time |
| M9D80 | September_80-Percent_Duration | September streamflow exceeded 80 percent of September the time |
| M9D85 | September_85-Percent_Duration | September streamflow exceeded 85 percent of September the time |
| M9D90 | September_90-Percent_Duration | September streamflow exceeded 90 percent of September the time |
| M9D93 | September_93-Percent_Duration | September streamflow exceeded 93 percent of September the time |
| M9D95 | September_95-Percent_Duration | September streamflow exceeded 95 percent of September the time |
| M9D97 | September_97-Percent_Duration | September streamflow exceeded 97 percent of September the time |
| M9D98 | September_98-Percent_Duration | September streamflow exceeded 98 percent of September the time |
| M9D99 | September_99-Percent_Duration | September streamflow exceeded 99 percent of September the time |
| MEDAN | Median_Annual_Flow | Median Annual Flow |
| MEDFALL | Fall_Median_Flow | Fall Median Flow |
| MEDQ1 | January_Median_Flow | Median January Flow |
| MEDQ10 | October_Median_Flow | Median October Flow |
| MEDQ11 | November_Median_Flow | Median November Flow |
| MEDQ12 | December_Median_Flow | Median December Flow |
| MEDQ2 | February_Median_Flow | Median February Flow |
| MEDQ3 | March_Median_Flow | Median March Flow |
| MEDQ4 | April_Median_Flow | Median April Flow |
| MEDQ5 | May_Median_Flow | Median May Flow |
| MEDQ6 | June_Median_Flow | Median June Flow |
| MEDQ7 | July_Median_Flow | Median July Flow |
| MEDQ8 | August_Median_Flow | Median August Flow |
| MEDQ9 | September_Median_Flow | Median September Flow |
| MEDSPRG | Spring_Median_Flow | Spring Median Flow |
| MEDSUMR | Summer_Median_Flow | Summer Median Flow |
| MEDWNTR | Winter_Median_Flow | Winter Median Flow |
| MNFALL | Fall_Mean_Flow | Fall Mean Flow |
| MNSPRING | Spring_Mean_Flow | Spring Mean Flow |
| MNSUMMER | Summer_Mean_Flow | Summer Mean Flow |
| MNWINTER | Winter_Mean_Flow | Winter Mean Flow |
| PK10 | 10-Year_Peak_Flood | Maximum instantaneous flow that occurs on average once in 10 years |
| PK100 | 100-Year_Peak_Flood | Maximum instantaneous flow that occurs on average once in 100 years |
| PK100R | Regulated_100-Year_Peak_Flood | Maximum regulated instantaneous flow that occurs on average once in 100 years |
| PK100W | Weighted_100-Year_Peak_Flood | Weighted maximum instantaneous flow that occurs on average once in 100 years |
| PK10R | Regulated_10-Year_Peak_Flood | Maximum regulated instantaneous flow that occurs on average once in 10 years |
| PK10W | Weighted_10-Year_Peak_Flood | Weighted maximum instantaneous flow that occurs on average once in 10 years |
| PK2 | 2-Year_Peak_Flood | Maximum instantaneous flow that occurs on average once in 2 years |
| PK200 | 200-Year_Peak_Flood | Maximum instantaneous flow that occurs on average once in 200 years |
| PK200R | Regulated_200-Year_Peak_Flood | Maximum regulated instantaneous flow that occurs on average once in 200 years |
| PK200W | Weighted_200-Year_Peak_Flood | Weighted maximum instantaneous flow that occurs on average once in 200 years |
| PK25 | 25-Year_Peak_Flood | Maximum instantaneous flow that occurs on average once in 25 years |
| PK25R | Regulated_25-Year_Peak_Flood | Maximum regulated instantaneous flow that occurs on average once in 25 years |
| PK25W | Weighted_25-Year_Peak_Flood | Weighted maximum instantaneous flow that occurs on average once in 25 years |
| PK2R | Regulated_2-Year_Peak_Flood | Maximum regulated instantaneous flow that occurs on average once in 2 years |
| PK2W | Weighted_2-Year_Peak_Flood | Weighted maximum instantaneous flow that occurs on average once in 2 years |
| PK5 | 5-Year_Peak_Flood | Maximum instantaneous flow that occurs on average once in 5 years |
| PK50 | 50-Year_Peak_Flood | Maximum instantaneous flow that occurs on average once in 50 years |
| PK500 | 500-Year_Peak_Flood | Maximum instantaneous flow that occurs on average once in 500 years |
| PK500R | Regulated_500-Year_Peak_Flood | Maximum regulated instantaneous flow that occurs on average once in 500 years |
| PK500W | Weighted_500-Year_Peak_Flood | Weighted maximum instantaneous flow that occurs on average once in 500 years |
| PK50R | Regulated_50-Year_Peak_Flood | Maximum regulated instantaneous flow that occurs on average once in 50 years |
| PK50W | Weighted_50-Year_Peak_Flood | Weighted maximum instantaneous flow that occurs on average once in 50 years |
| PK5R | Regulated_5-Year_Peak_Flood | Maximum regulated instantaneous flow that occurs on average once in 5 years |
| PK5W | Weighted_5-Year_Peak_Flood | Weighted maximum instantaneous flow that occurs on average once in 5 years |
| PKMEAN | Mean_Annual_Flood | Maximum instantaneous flow that occurs on average once in 2.33 years |
| PKMEANR | Regulated_Mean_Annual_Flood | Maximum regulated instantaneous flow that occurs on average once in 1.25 years |
| PKMEANW | Weighted_Mean_Annual_Flood | Weighted maximum instantaneous flow that occurs on average once in 1.25 years |
| Q1 | January_Mean_Flow | Mean January Flow |
| Q10 | October_Mean_Flow | Mean October Flow |
| Q11 | November_Mean_Flow | Mean November Flow |
| Q12 | December_Mean_Flow | Mean December Flow |
| Q2 | February_Mean_Flow | Mean February Flow |
| Q3 | March_Mean_Flow | Mean March Flow |
| Q4 | April_Mean_Flow | Mean April Flow |
| Q5 | May_Mean_Flow | Mean May Flow |
| Q6 | June_Mean_Flow | Mean June Flow |
| Q7 | July_Mean_Flow | Mean July Flow |
| Q8 | August_Mean_Flow | Mean August Flow |
| Q9 | September_Mean_Flow | Mean September Flow |
| QA | Mean_Annual_Flow | Mean Annual Flow |
| SDLOGPK | Log_STD_of_Annual_Peaks | Standard deviation of logarithms base 10 of systematic annual peak floods |
| V15D100Y | 15-Day_100-Year_Maximum | 15-Day mean maximim flow that occurs on average once in 100 years |
| V15D10Y | 15-Day_10-Year_Maximum | 15-Day mean maximim flow that occurs on average once in 10 years |
| V15D200Y | 15-Day_200-Year_Maximum | 15-Day mean maximim flow that occurs on average once in 200 years |
| V15D20Y | 15-Day_20-Year_Maximum | 15-Day mean maximim flow that occurs on average once in 20 years |
| V15D25Y | 15-Day_25-Year_Maximum | 15-Day mean maximim flow that occurs on average once in 25 years |
| V15D2Y | 15-Day_2-Year_Maximum | 15-Day mean maximim flow that occurs on average once in 2 years |
| V15D500Y | 15-Day_500-Year_Maximum | 15-Day mean maximim flow that occurs on average once in 500 years |
| V15D50YR | 15-Day_50-Year_Maximum | 15-Day mean maximim flow that occurs on average once in 50 years |
| V15D5Y | 15-Day_5-Year_Maximum | 15-Day mean maximim flow that occurs on average once in 5 years |
| V1D100Y | 1-Day_100-Year_Maximum | 1-Day mean maximim flow that occurs on average once in 100 years |
| V1D10Y | 1-Day_10-Year_Maximum | 1-Day mean maximim flow that occurs on average once in 10 years |
| V1D200Y | 1-Day_200-Year_Maximum | 1-Day mean maximim flow that occurs on average once in 200 years |
| V1D20Y | 1-Day_20-Year_Maximum | 1-Day mean maximim flow that occurs on average once in 20 years |
| V1D25Y | 1-Day_25-Year_Maximum | 1-Day mean maximim flow that occurs on average once in 25 years |
| V1D2Y | 1-Day_2-Year_Maximum | 1-Day mean maximim flow that occurs on average once in 2 years |
| V1D500Y | 1-Day_500-Year_Maximum | 1-Day mean maximim flow that occurs on average once in 500 years |
| V1D50Y | 1-Day_50-Year_Maximum | 1-Day mean maximim flow that occurs on average once in 50 years |
| V1D5Y | 1-Day_5-Year_Maximum | 1-Day mean maximim flow that occurs on average once in 5 years |
| V30D100Y | 30-Day_100-Year_Maximum | 30-Day mean maximim flow that occurs on average once in 100 years |
| V30D10Y | 30-Day_10-Year_Maximum | 30-Day mean maximim flow that occurs on average once in 10 years |
| V30D200Y | 30-Day_200-Year_Maximum | 30-Day mean maximim flow that occurs on average once in 200 years |
| V30D20Y | 30-Day_20-Year_Maximum | 30-Day mean maximim flow that occurs on average once in 20 years |
| V30D25Y | 30-Day_25-Year_Maximum | 30-Day mean maximim flow that occurs on average once in 25 years |
| V30D2Y | 30-Day_2-Year_Maximum | 30-Day mean maximim flow that occurs on average once in 2 years |
| V30D500Y | 30-Day_500-Year_Maximum | 30-Day mean maximim flow that occurs on average once in 500 years |
| V30D50Y | 30-Day_50-Year_Maximum | 30-Day mean maximim flow that occurs on average once in 50 years |
| V30D5Y | 30-Day_5-Year_Maximum | 30-Day mean maximim flow that occurs on average once in 5 years |
| V3C25Y | 3-Day_25-Year_Maximum | 3-Day mean maximim flow that occurs on average once in 25 years |
| V3D100Y | 3-Day_100-Year_Maximum | 3-Day mean maximim flow that occurs on average once in 100 years |
| V3D10Y | 3-Day_10-Year_Maximum | 3-Day mean maximim flow that occurs on average once in 10 years |
| V3D200Y | 3-Day_200-Year_Maximum | 3-Day mean maximim flow that occurs on average once in 200 years |
| V3D20Y | 3-Day_20-Year_Maximum | 3-Day mean maximim flow that occurs on average once in 20 years |
| V3D2Y | 3-Day_2-Year_Maximum | 3-Day mean maximim flow that occurs on average once in 2 years |
| V3D500Y | 3-Day_500-Year_Maximum | 3-Day mean maximim flow that occurs on average once in 500 years |
| V3D50Y | 3-Day_50-Year_Maximum | 3-Day mean maximim flow that occurs on average once in 50 years |
| V3D5Y | 3-Day_5-Year_Maximum | 3-Day mean maximim flow that occurs on average once in 5 years |
| V7D100Y | 7-Day_100-Year_Maximum | 7-Day mean maximim flow that occurs on average once in 100 years |
| V7D10Y | 7-Day_10-Year_Maximum | 7-Day mean maximim flow that occurs on average once in 10 years |
| V7D200Y | 7-Day_200-Year_Maximum | 7-Day mean maximim flow that occurs on average once in 200 years |
| V7D20Y | 7-Day_20-Year_Maximum | 7-Day mean maximim flow that occurs on average once in 20 years |
| V7D25Y | 7-Day_25-Year_Maximum | 7-Day mean maximim flow that occurs on average once in 25 years |
| V7D2Y | 7-Day_2-Year_Maximum | 7-Day mean maximim flow that occurs on average once in 2 years |
| V7D500Y | 7-Day_500-Year_Maximum | 7-Day mean maximim flow that occurs on average once in 500 years |
| V7D50Y | 7-Day_50-Year_Maximum | 7-Day mean maximim flow that occurs on average once in 50 years |
| V7D5Y | 7-Day_5-Year_Maximum | 7-Day mean maximim flow that occurs on average once in 5 years |
| WRC_MEAN | WRC_Mean | WRC Mean |
| WRC_SKEW | WRC_Skew | WRC Skew |
| WRC_STD | WRC_STD | WRD Standard Deviation |
| YRSDAY | Daily_flow_years | Number of years of daily flow record |
| YRSEQUIV | Equivalent_Years_of_Data | Equivalent Years of Data for peak flow values |
| YRSHISPK | Peak_years_with_historic_adjustment | Number of consecutive years used for historic-peak adjustment to flood-frequency data |
| YRSLOW | Low-flow_years | Number of years of low-flow record |
| YRSPK | Systematic_peak_years | Number of years of systematic peak flow record |
