For the counties coverage, the integers correspond to county names as follows: 2 = Boone, 3 =
Dallas, 4 = Polk, 5 = Warren, 6 = Mahaska, 7 = Marion, 8 = Wapello, 9 = Van Buren, 10 =
Davis, 11 = Lee. Integers for the roads, hydro and rail coverages correspond to the number
segment of the CFCC classifications described in the TIGER/Line reference mentioned
above. Road features are in classification `A', hydro in `H' and rail in `B'.
Grand River UTM zone 15
Data_Set_Identity: 1993 Midwest Flooding Emergency Management Data--Grand 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 Grand River from Gentry to Saline County, MO. All
data was derived from the 1990 TIGER/Line Census Files, 1:100000 scale, produced and dis-
tributed by the Bureau of the Census (1991).
Data_Set_Extent: Missouri - Carroll, Chariton, Daviess, Gentry, Livingston,
Grid_Coordinate_System: Universal Transverse Mercator
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 ocumentation/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 reconstructed
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
coverages to allow conversion of attribute information. Information was encoded into the
major1 item only.
For the counties coverage, the integers correspond to county
names as follows: 1 = Carroll, 3 = Chariton, 5 = Daviess, 7 = Gentry,
9 = Livingston, 11 = Saline. Integers for the roads, hydro and rail coverages correspond to
the number segment of the CFCC classifications described in the TIGER/Line reference
mentioned above. Road features are in classification `A', hydro in `H' and rail in `B'.