FLOOD00425

• County: Statewide
• Title: HYDPAR- users manual
• Date: 11/1/1978
• Prepared For: US
• Prepared By: US Army Corps of Engineers
• Floodplain - Doc Type: Educational/Technical/Reference Information

Second Job Card, J2.
variables in the data bank
required for analysis.

This required card describes the number of data
and the sequence number (location) of the variables

Subbasin Data Cards, EQ, SL, LU, SB. These particular cards are, in

general, utilized in the different computational methods, either the SCS or

composite imperviousness and Snyder procedures.

Equation Constant Card, EQ. An optional card which specifies the
regression constant and coefficients required by equation 3-3 (in the
computation of Snyder's basin lag).

Slope Card(s), SL. An optional card(s) which defines the slope values

for the SCS slope categories recorded in numerical sequence in the

grid cell data bank. This permits the computation of an arithmetic

average slope for each subbasin. (This card is not required if an

estimated subbasin slope value is input directly.

Land Use Cards, LU. Land use cards are required and describe the range

of Curve Numbers associated with each land use category residing in

the grid cell data bank for the various soil types included. (If the

subbasin imperviousness is computed then the land use cards would

supply the percent imperviousness associated with each land use category).

Output Display

The description of the output is accompanied by sample printouts, Exhibits

3-1 and 3..2. Because the output has been somewhat simplified, it does not

include specific subbasin data for every subbasin. The numbers in paren-

thesis in the text refer to a specific line (ur series of lines) that is

numbered on the sample output.

The line printer output begins with the name of the program (see Exhibit 3-1),
the program version date, and the origin of the program (l). The run date
and time are printed as an aid in identifying the output (2).

3-l0