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.
05127000 - streamflow gaging station
1-day lowflow - lowflow statistic
April 1 - start of season
March 31 - end of season
1906 - 2004 - time period
52 - non-zero values
31 - zero values
16 - years with missing values (not used)
15.000 113.000 95.000 159.000 131.000
67.000 97.000 32.000 71.000 57.000
22.000 52.000 75.000 91.000 65.000
161.000 97.000 32.000 129.000 8.000
65.000 32.000 129.000 97.000 170.000
32.000 32.000 46.000 97.000 226.000
226.000 155.000 129.000 161.000 82.000
65.000 102.000 214.000 97.000 150.000
21.000 97.000 97.000 182.000 79.000
143.000 27.000 29.000 173.000 102.000
116.000 97.000
The following 7 statistics are based on non-zero values:
Mean (logs) 1.893
Variance (logs) 0.103
Standard Deviation (logs) 0.322
Skewness (logs) -0.951
Standard Error of Skewness (logs) 0.330
Serial Correlation Coefficient (logs) 0.088
Coefficient of Variation (logs) 0.170
Non- Adjusted Non- Adjusted
exceedance Recurrence Estimated exceedance Estimated
Probability Interval Streamflow Probability Streamflow
----------- ----------- --------- ----------- ---------
0.0100 100.00 8.535 0.3798 0.000
0.0200 50.00 12.087 0.3860 0.000
0.0500 20.00 19.594 0.4048 0.000
0.1000 10.00 28.969 0.4361 0.000
0.2000 5.00 44.390 0.4988 0.000
0.5000 2.00 87.675 0.6867 44.627
0.8000 1.25 146.865 0.8747 119.222
0.9000 1.11 181.275 0.9373 159.896
0.9600 1.04 217.973 0.9749 201.484
0.9800 1.02 240.662 0.9875 226.342
0.9900 1.01 259.873 0.9937 248.243
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.
05127000 - streamflow gaging station
7-day lowflow - lowflow statistic
April 1 - start of season
March 31 - end of season
1906 - 2004 - time period
79 - non-zero values
4 - zero values
16 - years with missing values (not used)
192.857 49.000 145.000 68.429 157.143
250.857 258.571 182.286 195.000 248.429
92.857 261.000 84.000 180.714 146.429
122.286 198.429 206.714 184.714 178.571
174.857 141.286 310.286 194.000 32.143
185.714 261.000 214.000 264.571 288.000
174.286 216.000 218.857 208.714 156.143
142.857 9.286 110.429 167.857 126.286
185.429 260.000 127.143 107.571 395.571
332.429 137.857 318.143 250.000 293.000
235.143 245.571 66.714 199.000 318.143
175.857 95.571 236.714 325.714 95.429
226.429 300.571 285.857 150.143 75.143
33.286 140.286 324.143 262.143 215.143
69.714 221.429 27.429 30.000 253.714
231.857 217.429 131.571 45.286
The following 7 statistics are based on non-zero values:
Mean (logs) 2.197
Variance (logs) 0.087
Standard Deviation (logs) 0.294
Skewness (logs) -1.732
Standard Error of Skewness (logs) 0.271
Serial Correlation Coefficient (logs) 0.156
Coefficient of Variation (logs) 0.134
Non- Adjusted Non- Adjusted
exceedance Recurrence Estimated exceedance Estimated
Probability Interval Streamflow Probability Streamflow
----------- ----------- --------- ----------- ---------
0.0100 100.00 15.055 0.0577 0.000
0.0200 50.00 23.178 0.0672 0.000
0.0500 20.00 41.252 0.0958 4.562
0.1000 10.00 64.241 0.1434 42.903
0.2000 5.00 100.995 0.2386 84.083
0.5000 2.00 189.293 0.5241 181.857
0.8000 1.25 271.636 0.8096 268.656
0.9000 1.11 302.036 0.9048 300.418
0.9600 1.04 323.337 0.9619 322.547
0.9800 1.02 331.903 0.9810 331.440
0.9900 1.01 336.959 0.9905 336.701
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.
05127000 - streamflow gaging station
30-day lowflow - lowflow statistic
April 1 - start of season
March 31 - end of season
1906 - 2004 - time period
83 - non-zero values
0 - zero values
16 - years with missing values (not used)
201.000 164.900 145.000 19.033 45.567
237.967 120.633 383.600 278.867 280.133
200.200 250.500 306.500 110.400 293.033
94.600 217.633 199.933 129.700 205.833
234.033 214.000 181.867 438.833 231.567
397.933 209.033 41.867 366.600 292.800
286.167 288.600 305.667 218.900 227.333
274.300 261.567 210.033 234.133 51.233
123.833 186.733 142.233 221.767 317.133
257.167 142.133 577.500 349.733 160.533
379.900 273.300 318.533 263.133 277.800
33.900 80.200 202.233 340.567 215.867
132.667 557.367 420.833 117.167 359.367
356.233 314.167 242.433 177.833 59.533
201.033 398.000 365.533 361.400 260.167
323.000 120.533 83.933 295.400 291.300
320.367 160.300 264.800
The following 7 statistics are based on non-zero values:
Mean (logs) 2.316
Variance (logs) 0.073
Standard Deviation (logs) 0.271
Skewness (logs) -1.502
Standard Error of Skewness (logs) 0.264
Serial Correlation Coefficient (logs) 0.212
Coefficient of Variation (logs) 0.117
Non-exceedance Recurrence Estimated
Probability Interval Streamflow
----------- ---------- ---------
0.0100 100.00 25.959
0.0200 50.00 37.434
0.0500 20.00 61.353
0.1000 10.00 90.162
0.2000 5.00 134.595
0.5000 2.00 240.338
0.8000 1.25 346.003
0.9000 1.11 390.136
0.9600 1.04 425.278
0.9800 1.02 441.522
0.9900 1.01 452.329