HYDROLOGY

comprehensive road network file; roads, streets, etc.

This product is a globally seamless adaptation of the U.S. Government's Digital Chart of the World (Vector Smart Map Level 0 [VMap0], Edition 5) produced by Global Mapping International in ESRI shapefile format, with added country polygons and updated first-level subdivisions of countries.

Each year, Environment Canada produces a National HYDAT CD-ROM which provides rapid access to a stand alone version of the National Water Data Archive.

Note that some layers are free to download. Others must be requested through the Map and Data Library. All roads can be found for public use at this url http://gis.ny.gov/gisdata/inventories/details.cfm?DSID=932

The Hydrological Atlas of Germany (HAD) is based on nation-wide comparable data for the whole of Germany using up to date hydrological models and regionalisation methods.

The CD-ROM contains instructions to help you start using Arc Hydro, plus a set of tools that populate the attributes of the features in the data framework, interconnect features in different data layers, support hydrologic analysis, and more.

The CD-ROM contains 2 interactive versions.

Comprehensive general atlas of the World. Contains general data as well.

This CD-ROM contains a digital atlas of the countries of North Eurasia.