Topological issues such as remnant 7.5' quad boudnaries, leaky polygons, duplicate arcs, and a cryptic 30 character attributing string filled with concantinated information persist in the data set to this day.
WSAPCA.PAT:
COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME
1 AREA 8 18 F 5
9 PERIMETER 8 18 F 5
17 WSAPCA# 4 5 B -
21 WSAPCA-ID 4 5 B -
25 WSA_CODE 13 13 C -
55 NAME 40 40 C -
The only items which are not system defined in wsapca.pat are wsapca_code
and name. Wsapca_code contains the BLM internal WSA number. The code is
built in the format CA-xxx-yyyy, where CA is for California, xxx is a
a three character integer field which refers to internal BLM office code
numbers, and yyyy is a four character field used for WSA unique codes that
may be mixed numeric and character. Name is an item which simply contains
the name which the BLM uses for the WSA. Valid office code numbers are:
010 for the Bakersfield District; 020 for the Susanville District; 050
for the Ukiah District; and 060 for the California Desert District; no
code are for those WSA areas added by the Desert Protection Act; 040 is
a code used for the Pinnacles WSA.
WSAPCA.AAT:
COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME
1 FNODE# 4 5 B -
5 TNODE# 4 5 B -
9 LPOLY# 4 5 B -
13 RPOLY# 4 5 B -
17 LENGTH 8 18 F 5
25 WSAPCA# 4 5 B -
29 WSAPCA-ID 4 5 B -
33 COORD_SOURCE 20 20 C _
53 DEF_FEATURE 30 30 C _
83 OFFSET_METER 8 8 N 0
Coord_source, def_feature, and offset_meter are the only items
which are not system defined. Coord_source is used to provide
information about the source of each arc used in the data set.
Currently all arcs are from the moss data set, which was digitized
in ADS/MOSS from paper 7.5' USGS topo quads. Def_feature is
used to indicate what physical feature is used to define the
boudnary (eg. river, road, plss, etc.). Currently, all of the
def_feature entries are set to unknown, largely due the the
historic nature of this data. Offset_meter is used for
cartographic purposes in illustrating data in offsetting
coincident features. Currently all features are set to 0 or
-99999 indicating that no offset is required.