Log-Pearson Type III Statistics Notice -- Use of Log-Pearson Type III or Pearson-Type III distributions are for preliminary computations. User is responsible for assessment and interpretation. 05030000 - streamflow gaging station 1-day lowflow - lowflow statistic April 1 - start of season March 31 - end of season 1938 - 1971 - time period 34 - non-zero values 0 - zero values 0 - years with missing values (not used) 0.500 0.400 0.100 0.200 0.300 0.500 1.800 1.600 15.000 7.800 1.900 6.000 3.500 1.600 9.700 5.300 17.000 3.100 8.400 1.500 3.800 3.600 13.000 8.100 3.500 10.000 6.100 13.000 17.000 21.000 1.000 5.900 1.100 0.500 The following 7 statistics are based on non-zero values: Mean (logs) 0.450 Variance (logs) 0.378 Standard Deviation (logs) 0.615 Skewness (logs) -0.593 Standard Error of Skewness (logs) 0.403 Serial Correlation Coefficient (logs) 0.624 Coefficient of Variation (logs) 1.365 Non-exceedance Recurrence Estimated Probability Interval Streamflow ----------- ---------- --------- 0.0100 100.00 0.058 0.0200 50.00 0.101 0.0500 20.00 0.222 0.1000 10.00 0.430 0.2000 5.00 0.909 0.5000 2.00 3.241 0.8000 1.25 9.487 0.9000 1.11 15.444 0.9600 1.04 24.629 0.9800 1.02 32.380 0.9900 1.01 40.681 =============================== Log-Pearson Type III Statistics (based on USGS Program A193) Notice -- Use of Log-Pearson Type III or Pearson-Type III distributions are for preliminary computations. User is responsible for assessment and interpretation. 05030000 - streamflow gaging station 7-day lowflow - lowflow statistic April 1 - start of season March 31 - end of season 1938 - 1971 - time period 34 - non-zero values 0 - zero values 0 - years with missing values (not used) 0.500 0.500 0.186 0.243 0.486 1.929 2.286 2.629 16.571 8.686 2.014 6.000 3.529 1.800 10.629 6.143 18.000 3.714 8.429 1.514 3.971 6.057 13.000 13.357 3.957 10.571 6.343 14.429 19.143 28.571 1.100 6.386 1.343 0.500 The following 7 statistics are based on non-zero values: Mean (logs) 0.536 Variance (logs) 0.337 Standard Deviation (logs) 0.580 Skewness (logs) -0.533 Standard Error of Skewness (logs) 0.403 Serial Correlation Coefficient (logs) 0.596 Coefficient of Variation (logs) 1.084 Non-exceedance Recurrence Estimated Probability Interval Streamflow ----------- ---------- --------- 0.0100 100.00 0.092 0.0200 50.00 0.153 0.0500 20.00 0.317 0.1000 10.00 0.584 0.2000 5.00 1.170 0.5000 2.00 3.862 0.8000 1.25 10.784 0.9000 1.11 17.312 0.9600 1.04 27.399 0.9800 1.02 35.981 0.9900 1.01 45.263 =============================== Log-Pearson Type III Statistics (based on USGS Program A193) Notice -- Use of Log-Pearson Type III or Pearson-Type III distributions are for preliminary computations. User is responsible for assessment and interpretation. 05030000 - streamflow gaging station 30-day lowflow - lowflow statistic April 1 - start of season March 31 - end of season 1938 - 1971 - time period 34 - non-zero values 0 - zero values 0 - years with missing values (not used) 1.260 1.150 0.363 0.463 2.140 9.213 7.750 27.267 20.567 11.560 2.430 6.517 4.360 2.273 14.613 6.713 20.567 5.100 8.753 1.847 4.917 16.333 13.200 18.950 6.510 11.133 7.587 18.100 25.633 30.867 2.023 9.207 2.533 1.119 The following 7 statistics are based on non-zero values: Mean (logs) 0.757 Variance (logs) 0.258 Standard Deviation (logs) 0.508 Skewness (logs) -0.623 Standard Error of Skewness (logs) 0.403 Serial Correlation Coefficient (logs) 0.543 Coefficient of Variation (logs) 0.672 Non-exceedance Recurrence Estimated Probability Interval Streamflow ----------- ---------- --------- 0.0100 100.00 0.223 0.0200 50.00 0.357 0.0500 20.00 0.693 0.1000 10.00 1.205 0.2000 5.00 2.246 0.5000 2.00 6.441 0.8000 1.25 15.562 0.9000 1.11 23.143 0.9600 1.04 33.758 0.9800 1.02 42.064 0.9900 1.01 50.487