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| Hydrography Data by County | |||||
|---|---|---|---|---|---|
| County | Last Update: | Size (MB): | |||
| Adams | 3/1/2006 | 1.3 | |||
| Asotin | 4/18/2013 | 1.6 | |||
| Benton | 3/1/2006 | 1.2 | |||
| Chelan | 4/19/2013 | 8.9 | |||
| Clallam | 4/29/2013 | 4.6 | |||
| Clark | 5/24/2013 | 1.4 | |||
| Columbia | 4/14/2009 | 1.5 | |||
| Cowlitz | 5/24/2013 | 4.8 | |||
| Douglas | 3/1/2006 | 1.3 | |||
| Ferry | 5/21/2013 | 4.7 | |||
| Franklin | 3/1/2006 | 1.0 | |||
| Garfield | 4/18/2013 | 1.0 | |||
| Grant | 3/1/2006 | 2.2 | |||
| GraysHarbor | 5/10/2013 | 7.5 | |||
| Island | 4/30/2013 | 0.4 | |||
| Jefferson | 4/30/2013 | 4.7 | |||
| King | 5/8/2013 | 5.2 | |||
| Kitsap | 5/22/2013 | 0.8 | |||
| Kittitas | 3/8/2013 | 4.3 | |||
| Klickitat | 5/15/2013 | 1.9 | |||
| Lewis | 5/30/2013 | 9.0 | |||
| Lincoln | 4/30/2013 | 2.3 | |||
| Mason | 5/20/2013 | 2.0 | |||
| Okanogan | 5/15/2013 | 9.6 | |||
| Pacific | 5/23/2013 | 7.0 | |||
| PendOreille | 4/2/2013 | 2.7 | |||
| Pierce | 5/15/2013 | 3.3 | |||
| SanJuan | 4/30/2013 | 0.6 | |||
| Skagit | 5/15/2013 | 3.5 | |||
| Skamania | 4/8/2013 | 3.9 | |||
| Snohomish | 5/16/2013 | 4.1 | |||
| Spokane | 5/21/2013 | 2.4 | |||
| Stevens | 5/9/2013 | 4.0 | |||
| Thurston | 5/17/2013 | 1.8 | |||
| Wahkiakum | 5/23/2013 | 1.8 | |||
| WallaWalla | 5/5/2009 | 1.2 | |||
| Whatcom | 5/15/2013 | 3.2 | |||
| Whitman | 5/1/2013 | 1.9 | |||
| Yakima | 4/18/2013 | 4.8 | |||