Invasion

Invasion Description

1st Record: Astoria/OR/Youngs Bay, Columbia River estuary (1997, USGS Nonindigenous Aquatic Species Program 2007)

1st Nontidal Record: just downriver from Hagerman/ID/Lower Salmon Falls Dam impoundment, Snake River (1987, USGS Nonindigenous Aquatic Species Program 2007)

, 1st record: Doris Place Boat Ramp, Coos Bay/OR/Coos Bay (2006, USGS Nonindigenous Aquatic Species Program 2007), 1st record- OR/Rogue River estuary (2002, USGS Nonindigenous Aquatic Species Program 2007; Davidson et al. 2008);

(Nontidal): Gold Beach boat basin/OR/Rogue River (1999, USGS Nonindigenous Aquatic Species Program 2007; Davidson et al. 2008), 1st Record: ~10 mi W of Scottsburg/OR/near head of Umpqua estuary (2005, USGS Nonindigenous Aquatic Species Program 2007), 1st Record: Lincoln City/OR/Devil's Lake (2003, USGS Nonindigenous Aquatic Species Program 2007), 1st Record: Port Orford/OR/Garrison Lake (2002, Davidson et al. 2008); Coos County/OR/New River (2002, Davidson et al. 2008), 1st Record: Alsea/OR/Alsea Bay (2007, Davidson et al. 2008; USGS Nonindigenous Aquatic Species Program 2013), 1st Record: Newport/OR/Yaquina Bay (2007, Davidson et al. 2008), 1st Record: OR/Tillamook Bay (2007, Davidson et al. 2008), 1st Record: Long Beach/OR/Willapa Bay tributaries (2002, Davidson et al. 2008), 1st Record: just S of Orick/CA/Freshwater Lagoon (2008, USGS Nonindigenous Aquatic Species Program 2009), !st Record: just downstream of Mapleton, at Tiernan Boat Ramp/OR/Siuslaw River (7/12/2012, USGS Nonindigenous Aquatic Species Prgoram 2012), 1st Record: Mendecino County at Highway 1 bridge/CA/Garcia River (10/18/12, USGS Nonindigenous Aquatic Species Program 2012), 1st Record: Del Norte County/CA/Tillas Slough, Smith River (2008, USGS Nonindigenous Aquatic Species Program 2009), 1st Record: Rockaway Beach/OR/Lake Lytle (2011, USGS Nonindigenous Aquatic Species Program 2013), 1st Record: Coos County/OR/Red Creek, a small tributary to the Coquille River Estuary (5/14/2014, USGS Nonindigenous Aquatic Species Program 2014)

Geographic Extent

Hammond Harbor MarinaOR/Columbia River-Pacific Ocean (Hoy et al. 2012, 0.3-31 PSU); Astoria/OR/Youngs Bay, Columbia River estuary (1997, USGS Nonindigenous Aquatic Species Program 2007); Wallooskea/OR/Youngs River, Interior Port of Ilwaco/WA/Columbia River estuary (2002, Sytsma et al. 2004); OR/Cathlamet Bay (Bersine et al. 2008); WA/Baker Bay (2002, Bersine et al. 2008); WA/Grays Bay (Bersine et al. 2008); Kalama/WA/Columbia River estuary (2002, USGS Nonindigenous Aquatic Species Program 2007; Bersine et al. 2008); Knappa/OR/Columbia River estuary (2002, Sytsma et al. 2/004); WA/Lewis and Clark River (2002, Sytsma et al. 2004);

, Doris Place Boat Ramp, Coos Bay/OR/Coos Bay (2006, USGS Nonindigenous Aquatic Species Program 2007; Davidson et al. 2008), OR/Rogue River estuary (2002, USGS Nonindigenous Aquatic Species Program 2007; Davidson et al. 2008); (Nontidal): Gold Beach boat basin/OR/Rogue River (1999, USGS Nonindigenous Aquatic Species Program 2007; Davidson et al. 2008), ~10 mi W of Scottsburg/OR/near head of Umpqua estuary (2005, USGS Nonindigenous Aquatic Species Program 2007; Davidson et al. 2008), Lincoln City/OR/Devil's Lake, 2003, USGS Nonindigenous Aquatic Species Program 2007), Port Orford/OR/Garrison Lake (2002, Davidson et al. 2008); Coos County/OR/New River (2002, Davidson et al. 2008), 1st Record: Alsea/OR/Alsea Bay (2007, Davidson et al. 2008; USGS Nonindigenous Aquatic Species Program 2013), Newport/OR/Yaquina Bay (2007, Davidson et al. 2008), OR/Tillamook Bay (2007, Davidson et al. 2008); 1/4 mi downstream of Goodspeed Road N bridge crossing, Tilllamook/OR/Hall Slough, Tilllamook Bay (2011, USGS Nonindigenous Aquatic Species Program 2013), Long Beach/OR/Willapa Bay tributaries (2007, Davidson et al. 2008); east side of SR 4 at MP 0.7/WA/Naselle River tributary (3/19/2014, USGS Nonindigenous Aquatic Species Program 2014), just S of Orick/CA/Freshwater Lagoon (2008, USGS Nonindigenous Aquatic Species Program 2009); CA/Big Lagoon (9/2008, Hellmair et al. 2011); Humboldt County/CA/Stone Lagoon (5/7/2011, USGS Nonindigenous Aquatic Species Program), just downstream of Mapleton, at Tiernan Boat Ramp/OR/Siuslaw River (7/12/2012, USGS Nonindigenous Aquatic Species Prgoram 2012), Mendecino County at Highway 1 bridge/CA/Garcia River (10/18/12, USGS Nonindigenous Aquatic Species Program 2012), Del Norte County/CA/Tillas Slough, Smith River (2008, USGS Nonindigenous Aquatic Species Program 2009), Rockaway Beach/OR/Lake Lytle (2011, USGS Nonindigenous Aquatic Species Program 2013), Coos County/OR/Red Creek, a small tributary to the Coquille River Estuary (5/14/2014, USGS Nonindigenous Aquatic Species Program 2014)