2. Polygon topology was built for the county boundary coverages and arc topology for the
roads, hydro and rail coverages.
3. Each of the 4 features was appended into a single coverage covering all the counties using
the `poly' and `all' options for the county boundaries coverage and the `arc' and `all' options
for the remaining 3 coverages. Polygon topology for the counties coverage was reconstructed
using `clean'.
4. Coverages were converted to DLG-3 Optional format using the `arcdlg' command. Just pri-
or to conversion, items of type integer titled `major1' and `minor1' were added to the coverag-
es to allow conversion of attribute information. Information was encoded into the major1 item
only.
For the counties coverage, the integers correspond to county
names: NE: 53 = Burt, 55 = Cass, 57 = Dakota, 59 = Douglas, 61 = Nemaha, 63 = Otoe, 65 = Ri-
chardson, 67 = Sarpy, 69 = Thurston, 71 = Washington, IA: 83 = Harrison, 87 = Monona, 89 =
Pottawattamie, 91 = Woodbury.
Integers for the roads, hydro and rail coverages correspond to the
number segment of the CFCC classification described in the TIGER/Line
reference. Road features are in classification `A', hydro in
`H' and rail in `B'.
Metadata_Date: 11/93
Missouri River UTM zone 15
Data_Set_Identity: 1993 Midwest Flooding Emergency Management Data--Missouri River
Theme_Keywords: Roads, Rail, Hydrography, County Boundaries, Inundation
Data_Set_Description: This data set includes the roads, hydrography, railways, and county
boundaries for the counties along the Missouri River in UTM Zone 15. All data was derived
from the 1990 TIGER/Line Census Files, 1:100000 scale, produced and distributed by the
Bureau of the Census (1991).
Data_Structure: Vector
Data_Set_Extent: Counties in Iowa, Kansas, Nebraska and Missouri along the Missouri River (see
below for list)
Grid_Coordinate_System: Universal Transverse Mercator
UTM_Zone_Number: 15
Horizontal_Datum: NAD 83
Ellipsoid: GRS 80
Coordinate_Precision: Single
Transfer_Format: DLG-3 Optional
Contact_Organization: USACE Remote Sensing/GIS Center
Contact_Person: Dr. Joyce Nagle, Civil Engineer
Contact_Mailing_Address: 72 Lyme Road, Hanover, NH 03755-1290
Contact_Telephone: (603)646-4100
Contact_Email: nagle@crrel41.crrel.usace.army.mil
Custodial_Liability: Custodian does not assume liability
Source_Name: Tiger/Line Census Files, 1990; Arc coverages for each county were obtained from
Tim Rourke, CEMRO
Bibliographic_Reference: Tiger/Line Census Files, 1990, Technical Documentation/prepared by
the Bureau of the Census -Washington: The Bureau, 1991
Source_Scale: 100000
Creator_Of_Source: U.S. Department of Commerce, Bureau of the Census
Data_Set_History: 1. Each county's coverages for the features roads, hydrography, railways and
county boundaries were projected from the State Plane coordinate system (using the zone or
FIPS Zone Code as described in the source coverage) to UTM Zone 14. Nebraska had to be
projected from NAD27 to NAD83 to correspond with the remaining coverages.
2. Polygon topology was built for the county boundary coverages and arc topology for the
roads, hydro and rail coverages.
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