FLOOD10338

• County: Statewide
• Basin: Statewide
• Title: TR-20 Computer Program for Project Formulation Hydrology
• Date: 5/1/1983
• Floodplain - Doc Type: Educational/Technical/Reference Information

~

Co!. No. Value
2 ()
4-9 RUNOFF
11 1
13-15 b or var.
16-17 b or var.
23 var.
25-36 *var.
37-48 *var.
49-60 *var.
61 b or 1
63 b or 1
(- -/ .-
67 b or 1
69 b or 1
71 b or 1
73-80 b or var.

t(

3-19

Description
Data code signifying Standard Control statement

Operation name

Operation number

Cross section number, 1 thru
200, right justified

{must enter one
but not both

Structure number, 1 thru 99,
right justified

Output hydrograph storage location no.,
1 thru 7

Drainage area, sq. miles

Runoff curve number

Time of concentration, hours

~~Output option, print peak discharge

"

"

"

discharge hydro graph

"

"

"

runoff volume

"

generate discharge hydrograph
file

"

"

save results for summary tables

Record/statement identification, optional

Notes: * Decimal required in these fields, omitted in all others
** Enter 1 to turn the option on, otherwise leave it blank
var. - variable data to be entered by user
b - denotes blank
Example:

DATA FIELD # 2

'.Z '

1S.

The RUNOFF statement shown above would cause an inflow hydro graph to be
developed for structure 1. The subwatershed.has a drainage of 1.20 square
miles, a RCN of 75 and a time of concentration of 0.33 hours. The hydro-
graph is placed in storage location 6. The hydrograph will be printed out
and the results will be printed in Summary Tables 1 and 3. The peak
discharge and volume of runoff will also be printed.

.

Figure 3-3. -- RUNOFF Statement