Dreissena polymorpha
Dreissena polymorpha
(zebra mussel)
Mollusks-Bivalves
Exotic
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30 results for Dreissena polymorpha (zebra mussel)
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Page:12
Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
785857 MDCecilSusquehanna River (from Octoraro Creek to Spencer Island)2012 02050306 Lower Susquehannaestablished
273131 MDCecilSusquehanna River below Conowingo Dam2010 02050306 Lower Susquehannaunknown
785858 MDCecilSusquehanna River, at Havre de Grace2013 02050306 Lower Susquehannaestablished
785859 MDCecilSusquehanna River, at Havre de Grace2013 02050306 Lower Susquehannaestablished
785864 MDCecilSusquehanna River, at Havre de Grace2014 02050306 Lower Susquehannaestablished
785865 MDCecilSusquehanna River, at Havre de Grace2014 02050306 Lower Susquehannaestablished
785844 MDCecilSusquehanna River, at Perryville2014 02050306 Lower Susquehannaestablished
785843 MDCecilSusquehanna River, mouth, at Perryville2013 02050306 Lower Susquehannaestablished
785842 MDCecilSusquehanna River, mouth, at Perryville2014 02050306 Lower Susquehannaestablished
1321034 MDCecilSusquehanna River, near Conowingo2010 02050306 Lower Susquehannaestablished
1321037 MDCecilSusquehanna River, near Conowingo2010 02050306 Lower Susquehannaestablished
1321035 MDCecilSusquehanna River, near Conowingo2010 02050306 Lower Susquehannaestablished
1321038 MDCecilSusquehanna River, near Conowingo2012 02050306 Lower Susquehannaestablished
1321036 MDCecilSusquehanna River, near Port Deposit2010 02050306 Lower Susquehannaestablished
1321032 MDCecilSusquehanna River, near Port Deposit2010 02050306 Lower Susquehannaestablished
1321033 MDCecilSusquehanna River, near Port Deposit2010 02050306 Lower Susquehannaestablished
259014 MDHarfordSusquehanna River at Conowingo Dam, Darlington [in Conowingo Village]2008 02050306 Lower Susquehannaunknown
1321041 MDHarfordSusquehanna River, at Havre de Grace2012 02050306 Lower Susquehannaestablished
1321040 MDHarfordSusquehanna River, at Havre de Grace2012 02050306 Lower Susquehannaestablished
1321043 MDHarfordSusquehanna River, at Havre de Grace2013 02050306 Lower Susquehannaestablished
785845 MDHarfordSusquehanna River, at Perryviile/Havre de Grace2014 02050306 Lower Susquehannaestablished
785860 MDHarfordSusquehanna River, drinking water intake canal, just above Conowingo Dam, near Darlington2013 02050306 Lower Susquehannaestablished
785866 MDHarfordSusquehanna River, drinking water intake canal, just above Conowingo Dam, near Darlington2014 02050306 Lower Susquehannaestablished
259818 MDHarfordSusquehanna River, just upstream of Conowingo Dam Glen Cove Marina2008 02050306 Lower Susquehannaunknown
785852 MDHarfordSusquehanna River, mouth, at Havre de Grace2014 02050306 Lower Susquehannaestablished
Page:12

Data Disclaimer: Number of records does not imply species abundance. This summary represent collection records only and may not reflect the actual distribution of established populations. These data are preliminary or provisional and are subject to revision. They are being provided to meet the need for timely best science. The data have not received final approval by the U.S. Geological Survey (USGS) and are provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the data.

Disclaimer:

The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2026]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [2/7/2026].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted.

For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.