The table below is ordered by the WADNR numbering scheme, .i.e. by row and column. Each 7.5' quad has a unique ID number. The first two digits of the ID number count down from 49 degress. The last two digits count east from 125 degrees. Leading zeros are omitted so that quads above 47.875 degrees are three digits. and sliver quads above 49 degrees are two digits.
There may be one or more images for each quads, and one
or more images for each quarter quad.
USGS quarter quads from BIL files are colored linen,
USGS quarter quads from TIFF files are colored moccasin,
USFS full quads at 1-meter pixel size are colored green, and
USFS full quads at 2-meter pixel size are colored blue..
If you want to search by quad name, lower-left corner, or USGS numbering
scheme, use the find button of your web browser. Data west of
120° (last two digits of DNR code less than 41, or USGS code digits 3-5 greater
than 119) are in Universal Transverse Mercator (UTM) zone 10.
Data east of 120° are in UTM zone 11, a completely different coordinate system.
Nearly all of this data is on line, and the rest will follow soon. Click on the "ALL" link to download the image with metadata and alternate tfw files, or click on the other links for short text files. Approximate file sizes are shown in the "ALL" column. Quarter quads and 2-meter full quads are about 35 megabytes, and full 1-meter quads are about 140 megabytes. All data is available on cdrom (mostly in bil format) at the University of Washington Library Map Collection.
Some of this data may be browsed at Microsoft's online viewer
| quadrant/quad | DNR# | image date | lower left | CDROM | CDROM file | download file | ALL | meta data | tfw | tfw |
|---|---|---|---|---|---|---|---|---|---|---|
| Posy Valley | 3464 | 1992-6-4 | 44°45'0" -117°7'30" | USFS 171 | g144117.bil | 44117g1_1992.tif | 133M | text | NAD83 | NAD27 |