FLOOD09505

• County: Statewide
• Basin: Statewide
• Title: Standards for Digital Flood Insurance Rate Maps
• Date: 10/1/1993
• Prepared By: FEMA
• Floodplain - Doc Type: Historic FEMA Regulatory Floodplain Information

Descriptive Attribute Codes
Kajor Minor
Code Code Descriotor
430 0610 Feet
430- 06ll Me ters
430 0620 NGVD 29
430 0621 NAVD 88
430 0622 Other
Vertical Datum

Parameter Attribute Codes

431

Elevation

432

0-- -

Negative
Elevation

433

XXYY

Cross Section
Alpha Character

434

00--

Decimal
Fraction

435

ERM Identifier

10/93

Comments

Preceding unit values are expressed in whole
feet.

Preceding unit valuesrare expressed in whole
meters.

Preceding unit values are referenced to the
National Geodetic Vertical Datum of 1929.

Preceding unit values are referenced to the
North American Vertical Datum of 1988.

Preceding unit values are referenced to a
vertical datum other than NGVD 29 or NAVD 88.
(Previous edition dated October 1992, showed
this code as 430 0623).

Right justified; 4 digits. Must be followed
by descriptive codes identifying its units of
measure and datum.

Right justified; 4 digits. Must be followed
by descriptive codes identifying its units of
measure and vertical datum. (Previous
edition dated October 1993 showed this code
as 438 0---).

This code is used to encode the alphabetic
portion of any cross section. The code can
hold one or two letters by substituting the
numeric equivalent 01 to 26 for the letters A
to Z with 00 substit~ting for a blank. If
one letter is encoded it will be entered in
the YY portion of the code with a blank coded
into the XX portion. Note: This code may be
repeated to represent more than 4 digits

Right justified; 2 digits. This code may be
used in conjunction with the elevation
parameter code or the river mile marker
parameter code.

Right justified; 4 digits. Note: This code
may be repeated to represent more than 4
digits.

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