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. 05074500 - streamflow gaging station 1-day lowflow - lowflow statistic April 1 - start of season March 31 - end of season 1934 - 2004 - time period 62 - non-zero values 2 - zero values 7 - years with missing values (not used) 0.500 0.500 3.400 104.000 19.000 27.000 99.000 420.000 452.000 444.000 206.000 460.000 220.000 316.000 600.000 150.000 57.000 54.000 12.000 30.000 20.000 7.500 2.000 15.000 5.000 13.000 39.000 115.000 6.500 9.000 78.000 38.000 2.400 124.000 157.000 94.000 111.000 109.000 73.000 106.000 118.000 25.000 146.000 110.000 48.000 34.000 80.000 205.000 54.000 153.000 153.000 56.000 45.000 57.000 56.000 63.000 54.000 80.000 148.000 142.000 99.000 34.000 The following 7 statistics are based on non-zero values: Mean (logs) 1.706 Variance (logs) 0.447 Standard Deviation (logs) 0.669 Skewness (logs) -1.106 Standard Error of Skewness (logs) 0.304 Serial Correlation Coefficient (logs) 0.655 Coefficient of Variation (logs) 0.392 Non- Adjusted Non- Adjusted exceedance Recurrence Estimated exceedance Estimated Probability Interval Streamflow Probability Streamflow ----------- ----------- --------- ----------- --------- 0.0100 100.00 0.436 0.0409 0.000 0.0200 50.00 0.946 0.0506 0.000 0.0500 20.00 2.747 0.0797 0.900 0.1000 10.00 6.445 0.1281 3.928 0.2000 5.00 16.141 0.2250 12.736 0.5000 2.00 67.075 0.5156 63.039 0.8000 1.25 187.382 0.8063 183.270 0.9000 1.11 278.856 0.9031 275.303 0.9600 1.04 388.691 0.9613 385.334 0.9800 1.02 460.666 0.9806 457.756 0.9900 1.01 522.708 0.9903 520.582 Note -- Adjusted parameter values include zero values and correspond with non-exceedance probabilities in column 1 and recurrence interval in column 2. Estimated values in column 3 are based on non-zero values. =============================== 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. 05074500 - streamflow gaging station 7-day lowflow - lowflow statistic April 1 - start of season March 31 - end of season 1934 - 2004 - time period 63 - non-zero values 1 - zero values 7 - years with missing values (not used) 0.500 0.029 0.529 3.843 116.286 21.429 28.571 104.571 432.286 465.714 494.286 224.429 497.143 240.000 343.000 635.714 362.143 78.143 55.000 162.571 92.714 109.000 7.643 20.771 21.000 5.829 13.000 43.143 137.857 6.671 9.000 82.571 46.000 2.700 134.857 172.571 128.714 115.429 119.429 95.714 140.429 119.714 37.000 157.143 158.571 54.000 43.857 87.857 218.286 65.143 297.571 236.857 65.000 50.286 57.714 59.571 64.000 54.143 113.286 231.286 173.571 104.571 47.000 The following 7 statistics are based on non-zero values: Mean (logs) 1.770 Variance (logs) 0.602 Standard Deviation (logs) 0.776 Skewness (logs) -1.938 Standard Error of Skewness (logs) 0.302 Serial Correlation Coefficient (logs) 0.706 Coefficient of Variation (logs) 0.439 Non- Adjusted Non- Adjusted exceedance Recurrence Estimated exceedance Estimated Probability Interval Streamflow Probability Streamflow ----------- ----------- --------- ----------- --------- 0.0100 100.00 0.099 0.0255 0.000 0.0200 50.00 0.335 0.0353 0.020 0.0500 20.00 1.676 0.0648 0.856 0.1000 10.00 5.691 0.1141 4.013 0.2000 5.00 19.443 0.2125 16.635 0.5000 2.00 100.532 0.5078 97.365 0.8000 1.25 239.119 0.8031 237.230 0.9000 1.11 299.768 0.9016 298.694 0.9600 1.04 341.064 0.9606 340.600 0.9800 1.02 356.151 0.9803 355.904 0.9900 1.01 364.165 0.9902 364.037 Note -- Adjusted parameter values include zero values and correspond with non-exceedance probabilities in column 1 and recurrence interval in column 2. Estimated values in column 3 are based on non-zero values. =============================== 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. 05074500 - streamflow gaging station 30-day lowflow - lowflow statistic April 1 - start of season March 31 - end of season 1934 - 2004 - time period 64 - non-zero values 0 - zero values 7 - years with missing values (not used) 1.410 0.583 0.623 1.927 8.283 123.133 79.333 39.167 127.200 465.300 512.333 520.000 257.833 622.933 256.000 356.133 741.500 402.933 262.100 81.500 209.733 143.000 134.800 9.633 38.247 32.467 14.743 15.767 47.967 249.500 20.417 218.933 283.233 114.033 8.667 354.800 249.767 166.533 319.367 140.167 377.700 344.533 120.000 69.300 256.300 293.333 54.000 48.567 102.367 232.433 134.900 322.033 400.033 65.000 54.133 58.200 60.533 64.700 55.533 288.100 377.700 544.833 118.433 59.167 The following 7 statistics are based on non-zero values: Mean (logs) 1.968 Variance (logs) 0.490 Standard Deviation (logs) 0.700 Skewness (logs) -1.461 Standard Error of Skewness (logs) 0.299 Serial Correlation Coefficient (logs) 0.719 Coefficient of Variation (logs) 0.356 Non-exceedance Recurrence Estimated Probability Interval Streamflow ----------- ---------- --------- 0.0100 100.00 0.448 0.0200 50.00 1.140 0.0500 20.00 4.026 0.1000 10.00 10.790 0.2000 5.00 30.203 0.5000 2.00 135.392 0.8000 1.25 352.598 0.9000 1.11 486.205 0.9600 1.04 615.084 0.9800 1.02 682.729 0.9900 1.01 731.195