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| Hydrography Data by County | |||||
|---|---|---|---|---|---|
| County | Last Update: | Size (MB): | |||
| Adams | 3/1/2006 | 1.3 | |||
| Asotin | 4/14/2009 | 1.6 | |||
| Benton | 3/1/2006 | 1.2 | |||
| Chelan | 2/1/2012 | 8.9 | |||
| Clallam | 10/17/2011 | 4.6 | |||
| Clark | 9/21/2011 | 1.4 | |||
| Columbia | 4/14/2009 | 1.5 | |||
| Cowlitz | 4/20/2012 | 4.8 | |||
| Douglas | 3/1/2006 | 1.3 | |||
| Ferry | 1/12/2012 | 4.7 | |||
| Franklin | 3/1/2006 | 1.0 | |||
| Garfield | 11/5/2010 | 1.0 | |||
| Grant | 3/1/2006 | 2.2 | |||
| GraysHarbor | 4/18/2012 | 7.5 | |||
| Island | 10/24/2006 | 0.4 | |||
| Jefferson | 10/19/2011 | 4.7 | |||
| King | 4/3/2012 | 5.2 | |||
| Kitsap | 3/29/2012 | 0.8 | |||
| Kittitas | 12/19/2011 | 4.3 | |||
| Klickitat | 8/12/2011 | 1.9 | |||
| Lewis | 4/20/2012 | 9.0 | |||
| Lincoln | 1/12/2012 | 2.3 | |||
| Mason | 4/11/2012 | 2.0 | |||
| Okanogan | 3/27/2012 | 9.6 | |||
| Pacific | 4/19/2012 | 7.0 | |||
| PendOreille | 1/31/2012 | 2.7 | |||
| Pierce | 4/2/2012 | 3.3 | |||
| SanJuan | 4/2/2008 | 0.6 | |||
| Skagit | 4/12/2012 | 3.5 | |||
| Skamania | 9/22/2011 | 3.9 | |||
| Snohomish | 4/12/2012 | 4.1 | |||
| Spokane | 1/31/2012 | 2.4 | |||
| Stevens | 1/27/2012 | 4.0 | |||
| Thurston | 4/5/2012 | 1.8 | |||
| Wahkiakum | 3/29/2012 | 1.8 | |||
| WallaWalla | 5/5/2009 | 1.2 | |||
| Whatcom | 4/10/2012 | 3.2 | |||
| Whitman | 1/8/2010 | 1.9 | |||
| Yakima | 12/16/2011 | 4.8 | |||