TR20 basflo command
TR20 basflo command
(OP)
Hi,
Anyone have any hints for running a BASFLO command in TR20 (procedure 1)? I'm modeling a basic detention pond with a hydrograph entered as a runoff (using Area, CN and Tc). All i'm looking to do is add 5 cfs into the pond as a constant flow. According to the manual, i need a COMPUT command after the BASFLO command and a constant rate of baseflow can be added to hydrographs only in a reach routing.
Following are my commands without using BASFLO (not sure if it will come up looking ok or all jumbled). The question is where does it get entered and how? I think i tried everything and hand are almost up in the air (but i can't give up). TIA!
3 STRUCT 01 POND 1
8 768.50 0.000 0.000
8 769.00 0.639 0.013
8 770.00 0.964 0.053
8 771.00 1.204 0.116
9 ENDTBL
6 RUNOFF 1 050 1 .00214 96.00 0.39 1
6 RESVOR 2 01 1 2 768.50 1 1
ENDATA
7 INCREM 6 0.10
7 COMPUT 7 050 01 7.58 24.0 3 2 1 99 100YR
ENDCMP 1
ENDJOB 2
Anyone have any hints for running a BASFLO command in TR20 (procedure 1)? I'm modeling a basic detention pond with a hydrograph entered as a runoff (using Area, CN and Tc). All i'm looking to do is add 5 cfs into the pond as a constant flow. According to the manual, i need a COMPUT command after the BASFLO command and a constant rate of baseflow can be added to hydrographs only in a reach routing.
Following are my commands without using BASFLO (not sure if it will come up looking ok or all jumbled). The question is where does it get entered and how? I think i tried everything and hand are almost up in the air (but i can't give up). TIA!
3 STRUCT 01 POND 1
8 768.50 0.000 0.000
8 769.00 0.639 0.013
8 770.00 0.964 0.053
8 771.00 1.204 0.116
9 ENDTBL
6 RUNOFF 1 050 1 .00214 96.00 0.39 1
6 RESVOR 2 01 1 2 768.50 1 1
ENDATA
7 INCREM 6 0.10
7 COMPUT 7 050 01 7.58 24.0 3 2 1 99 100YR
ENDCMP 1
ENDJOB 2





RE: TR20 basflo command
Peter Smart
HydroCAD Software
www.hydrocad.net
RE: TR20 basflo command
3 STRUCT 03 POND 3
8 885.66 0.00 0.00
8 886.00 0.61 0.19
8 887.00 1.67 0.79
8 888.00 4.68 1.48
8 889.00 6.27 2.26
8 890.00 7.51 3.14
9 ENDTBL
6 RUNOFF 1 050 2 0.00001 61.00 0.26 1
ENDDATA
7 INCREM 6 0.13
7 BASFLO 5 5.12
7 COMPUT 7 050 050
ENDCMP 1
6 REACH 3 1 2 7 667 1
6 RUNOFF 1 053 5 .01763 70.00 0.26 1
6 RESVOR 2 03 5 6 885.66 1 1 1 1
ENDATA
7 INCREM 6 0.13
7 COMPUT 7 053 03 0.0 3.04 24.0 3 2 02 24
ENDCMP 1
7 COMPUT 7 053 03 0.0 7.58 24.0 3 2 99 24
ENDCMP 1
ENDJOB 2
RE: TR20 basflo command
According to the TR-20 manual, the BASEFLO is only in effect up to the next BASEFLO or ENDCMP statement. So you need to eliminate the first COMPUT/ENDCMP pair before the REACH statement.
Peter Smart
HydroCAD Software
www.hydrocad.net
RE: TR20 basflo command
RE: TR20 basflo command
I think you can use just the one compute statement at the end. It doesn't have to be immediately after the baseflow.
Peter Smart
HydroCAD Software
www.hydrocad.net
RE: TR20 basflo command
tried some more variations but still can't get it to work. does anyone have an example of a BASFLO they can post? tia!
RE: TR20 basflo command
Peter Smart
HydroCAD Software
www.hydrocad.net