APPENDIX D: METADATA
DLG-3 optional distribution format metadata files
Des Moines River UTM zone 15
Data_Set_Identity: 1993 Midwest Flooding Emergency Management Data -
Des Moines 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 Des Moines River extending southeastward from
Boone to Lee County, IA. 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_Set_Extent: Iowa - Boone, Dallas, Polk, Warren, Marion, Mahaska, Wapello, Davis, Van
Buren, Lee Counties
Grid_Coordinate_System: Universal Transverse Mercator
Horizontal_Datum: NAD 83
Ellipsoid: GRS 80
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
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
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 15.
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 reconstruct-
ed using `clean'.
4. Coverages were converted to DLG-3 Optional format using the `arcdlg' command. Just
prior to conversion, items of type integer titled `major1' and `minor1' were added to the cov-
erages to allow conversion of attribute information. Information was encoded into
the major1 item only.