LowFlow Freq Est v1

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					Regional Frequency Estimates of Low Flows for the Island of Newfoundland.

  Name of watershed...............        Watershed Name
  Location of watershed...........             1 Eastern & Southwestern
(Eastern-Southwestern=1, North-Central=2, Humber & Northern Peninsula=3)
  Range of Mean Annual Runoff for Region 1 = 1100 mm to 2100 mm

 ..... Physiographic Parameters .....                          Parameter Range               Range Check
 DA Area of watershed                       42.7    km²            4.0    200.0                      0
 FAR Forested Area (X if Unavail.)         14.95    km²            4.3     29.9                      0
 BAR Barren Area        (Not Used)         20.07    km²           10.7     32.0                      0
 ALS Lakes+Swamps Area (Not Used)          7.686    km²            4.3      8.5                      0
                                                                                                     0
                                             T                Low Flows (l/s)
                                           (year)    1-day      7-day     15-day    30-day
                                                2       168        203        254      366
                                               10        78         97        118      172
                                               20        64         81         98      143
                                               50        44         70         83      122
                                  DA             FAR             BAR             ALS                          Range of Mean Annual Runoff for Region
         Eqn 1 used in Reg A            42.7              35              47              18                    #N/A
                                                                                                                #N/A

                                               Region A BETA_30= 439.6712 BETA_15= 305.4898 BETA_7=
                               --------------- --------------- --------------- --------------- --------------- --------------- ---------------
                                                      T        BETA_30 Q_30                    BETA_15 Q_15                    BETA_7
Range Check                      Region            (year)      Factor               (l/s)      Factor               (l/s)      Factor
                                            1       2                0.832              366          0.833              254          0.831
                                            1      10                0.472              172          0.462              118          0.476
                                            1      20                0.829              143          0.829                98         0.840
                                            1      50                0.853              122          0.853                83         0.866
                               ************* ************* ************* ************* ************* ************* *************
                                               Region B BETA_30= 189.6672 BETA_15=                                 128.985 BETA_7=
                               --------------- --------------- --------------- --------------- --------------- --------------- ---------------
                                                      T        BETA_30 Q_30                    BETA_15 Q_15                    BETA_7
                                                   (year)      Factor               (l/s)      Factor               (l/s)      Factor
                                            0       2                0.844              160          0.841              108          0.834
                                            0      10                0.333                53         0.294                32         0.278
                                            0      20                0.393                21         0.287                 9         0.280
                                            0      50                0.602                13         0.695                 6         0.694
                               ************* ************* ************* ************* ************* ************* *************
                                               Region C BETA_30= 179.8381 BETA_15= 138.7304 BETA_7=
                               --------------- --------------- --------------- --------------- --------------- --------------- ---------------
                                                      T        BETA_30 Q_30                    BETA_15 Q_15                    BETA_7
                                                   (year)      Factor               (l/s)      Factor               (l/s)      Factor
                                            0       2                0.859              154          0.870              121          0.879
                                            0      10                0.604                93         0.611                74         0.606
                                            0      20                0.910                85         0.902                67         0.886
                                            0      50                0.929                79         0.917                61         0.894
                               ************* ************* ************* ************* ************* ************* *************
                               ************* ************* ************* ************* ************* ************* *************
Mean Annual Runoff for Region 1 = 1100 mm to 2100 mm


                                                                                         30              15                7               1
              244.6577 BETA_1=                202.2168          Region                  day             day             day             day
            --------------- --------------- ---------------   --------------- --------------- --------------- --------------- ---------------
            Q_7             BETA_1          Q_1
                 (l/s)      Factor               (l/s)
                     203          0.831              168                   1          366             254             203             168
                       97         0.466                78                  1          172             118              97              78
                       81         0.822                64                  1          143              98              81              64
                       70         0.676                44                  1          122              83              70              44
            ************* ************* *************
              103.2937 BETA_1=                84.44053
            --------------- --------------- ---------------
            Q_7             BETA_1          Q_1
                 (l/s)      Factor               (l/s)
                       86         0.826                70                  0          160             108               86              70
                       24         0.264                18                  0           53              32               24              18
                        7         0.275                 5                  0           21               9                7               5
                        5         0.670                 3                  0           13               6                5               3
            ************* ************* *************
                118.509 BETA_1=               104.3617
            --------------- --------------- ---------------
            Q_7             BETA_1          Q_1
                 (l/s)      Factor               (l/s)
                     104          0.880                92                  0          154             121             104               92
                       63         0.588                54                  0           93              74              63               54
                       56         0.866                47                  0           85              67              56               47
                       50         0.867                41                  0           79              61              50               41
            ************* ************* *************
            ************* ************* *************
                                                               Regional Frequency Estimates o
                                                            ****************************************



      lower         Upper         lower          Upper
                                                                     Regional Frequency Estim

 DA             4           200            4.0      200.0      Government of Newfoundland
FAR            10            70            4.3       29.9      Department of Environment and
BAR            25            75           10.7       32.0       Water Resources Manageme
ALS            10            20            4.3        8.5


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 DA            40           400           40.0      400.0            [Press Enter to Continue]
FAR            80           100           34.2       42.7
BAR             0             5            0.0        2.1
ALS            15            25            6.4       10.7




 DA           240           600       240.0         600.0
FAR            40            65        17.1          27.8
BAR            10            40         4.3          17.1
ALS            10            20         4.3           8.5
Regional Frequency Estimates of Low Flows
 ***********************************************

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Government of Newfoundland and Labrador            {goto}
Department of Environment and Conservation         c3~
 Water Resources Management Division



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posted:9/18/2012
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