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Northern
California Geodata Download
USERS ARE ADVISED
that some of the GIS datasets were provided by other agencies. Verification of the quality and currentness of any dataset supplied via this data browser are the responsibility of the user.
Directions for unzipping files.
| NORTHERN CALIFORNIA DATASETS | DOWNLOAD WINZIP FILE | ZIPPED (bytes) | UNZIPPED (bytes) |
| 10-Digit HUCs | hucs_10digit.ZIP | 732,987 | 892,797 |
| Pilot Area | pilot_area.ZIP | 41,279 | 71,294 |
| National Hydrography Dataset | nhd.ZIP | 9,924,472 | 16,802,640 |
| National Land Cover Data | nlcd.ZIP | 15,036,033 | 40,994,141 |
| GAP Vegetation | gap_veg.ZIP | 3,480,863 | 5,427,646 |
| Regulated Facilities | reg_facilities.ZIP | 96,345 | 531,353 |
| Mines | mines.ZIP | 163,439 | 805,509 |
| Roads | roads.ZIP | 12,597,912 | 67,538,521 |
| National Elevation Dataset | ned.ZIP | 247,700,823 | 888,675,912 |
| Soils K-Factor | soils_k2.ZIP | 1,706,102 | 4,917,885 |
| STATSGO Soils | statsgo.ZIP | 4,805,937 | 42,714,013 |
| Census Block Groups | census_blkgrps.ZIP | 1,770,488 | 2,365,878 |
| Census Tracts | census_tracts.ZIP | 932,868 | 1,199,191 |
| ZIP Codes | zip_codes.ZIP | 213,339 | 300,723 |
| Land Ownership | land_own.ZIP | 2,154,597 | 3,448,147 |
| Total Size (bytes) | 301,357,484 | 1,075,882,967 |
DOWNLOAD FILES:
The download files for this data browser are Arc/Info Coverages or Grids within individual Arc/Info Workspaces. The Arc/Info Workspaces have been archived and compressed using Tar and WinZip. To unpack these (file_name).ZIP files do the following: PC: Place (file_name).ZIP in a working directory-
-Open WinZip:
-
WinZip button bar - Click OPEN
Menu - Navigate to (file_name).ZIP file, Select, click OPEN
WinZip button bar - Click EXTRACT
Menu - Navigate to required output area and click EXTRACT
WinZip button bar - Click OPEN
Menu - Navigate to (file_name).tar file, Select, click OPEN
WinZip button bar - Click EXTRACT
Menu - Navigate to required output area and click EXTRACT
-
-Command Window:
-
Navigate to (file_name).ZIP file
Input at prompt - pkzip -extract (file_name).ZIP
Input at prompt - tar -xvf (file_name).tar
-
(file_name).ZIP - Original download file
(file_name)_w.tar - Tar Archive file
(file_name)_w - Workspace containing GIS data