NAS - Nonindigenous Aquatic Species

Specimen ID	State	County	Locality	Year	HUC Number	Drainage name	Status
160006	IL	Cook	Chicago River, Cook County	1999	07120003	Chicago	unknown
159743	IL	Cook	Deer Creek	1969	07120003	Chicago	unknown
159740	IL	Cook	Little Calumet River	1967	07120003	Chicago	unknown
159924	IL	Cook	Little Calumet River	1983	07120003	Chicago	unknown
159923	IL	Cook	Little Calumet River	1988	07120003	Chicago	unknown
159994	IL	Cook	Little Calumet River	1999	07120003	Chicago	unknown
159940	IL	Cook	Little Calumet River	2001	07120003	Chicago	unknown
159939	IL	Cook	Middle Fork North Branch Chicago River	2001	07120003	Chicago	unknown
159918	IL	Cook	North Branch Chicago River	1977	07120003	Chicago	unknown
159929	IL	Cook	North Branch Chicago River	1981	07120003	Chicago	unknown
1542240	IL	Cook	North Branch of Chicago River Turning basin	2018	07120003	Chicago	established
159738	IL	Cook	North Creek	1967	07120003	Chicago	unknown
1541865	IL	Cook	North Shore Channel	2018	07120003	Chicago	established
1542988	IL	Cook	North Shore Channel	2018	07120003	Chicago	established
1542615	IL	Cook	North Shore Channel	2018	07120003	Chicago	established
159992	IL	Cook	North Shore Channel (Chicago, IL)	1987	07120003	Chicago	unknown
160009	IL	Cook	North Shore Channel (Chicago, IL)	1999	07120003	Chicago	unknown
159905	IL	Cook	Sauk Trail Reservoir	1938	07120003	Chicago	unknown
159908	IL	Cook	Skokie River	1997	07120003	Chicago	unknown
159937	IL	Cook	Skokie River	2001	07120003	Chicago	unknown
159744	IL	Cook	Stony Creek	1970	07120003	Chicago	unknown

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.

Data are not available for download from the web site. Please contact NAS staff for a custom query.