Table 8.
Index of Invasion Pressure rank order (1= highest risk) inclusive of top 25 sites in each taxonomic grouping.
| Lake Basin | Location Name | State | Fish | Inverts | Plants | Average rank |
|---|---|---|---|---|---|---|
| Michigan | Chicago/Chicago River Mouth | IL | 1 | 3 | 1 | 1.7 |
| Erie | Toledo/Maumee River Mouth | OH | 2 | 2 | 2 | 2 |
| Ontario | Oswego/Oswego River Mouth | NY | 3 | 9 | 8 | 6.7 |
| Michigan | Portage/Portage-Burns Waterway | IN | 4 | 5 | 12 | 7 |
| Erie | Cleveland/Cuyahoga River Mouth | OH | 9 | 4 | 9 | 7.3 |
| Huron | Saginaw Bay/Saginaw River Mouth | MI | 6 | 15 | 4 | 8.3 |
| Erie | West Harbor/Marblehead/Lake Erie | OH | 14 | 10 | 3 | 9 |
| Erie | Sandusky/Sandusky Bay | OH | 16 | 6 | 6 | 9.3 |
| Erie | Buffalo/Niagara River | NY | 5 | 11 | 14 | 10 |
| Michigan | Calumet River Mouth/Lake Michigan | IN | 8 | 12 | 17 | 12.3 |
| Erie | Grosse Pointe Shores/Lake St. Clair | MI | 18 | 16 | 7 | 13.7 |
| Michigan | Benton Harbor/Saint Joseph River | MI | 7 | 31 | 5 | 14.3 |
| Michigan | East Chicago/Indiana Harbor Canal | IN | 10 | 17 | 20 | 15.7 |
| Michigan | Evanston/North Shore Channel Mouth | IL | 11 | 18 | 21 | 16.7 |
| Erie | Lake St. Clair/Clinton River Mouth | MI | 21 | 21 | 10 | 17.3 |
| Michigan | Milwaukee/Kinnickinnic River Mouth | WI | 20 | 14 | 19 | 17.7 |
| Ontario | Rochester/Genesee River Mouth | NY | 12 | 20 | 24 | 18.7 |
| Michigan | Green Bay/Fox River Mouth | WI | 15 | 25 | 16 | 18.7 |
| Erie | Lakeside/Lake St. Clair | MI | 17 | 35 | 11 | 21 |
| Superior | Duluth/St. Louis River Mouth | MN | 23 | 1 | 39 | 21 |
| Erie | Detroit River/Rouge River Mouth | MI | 19 | 32 | 15 | 22 |
| Erie | Fairport Harbor/Grand River Mouth | OH | 22 | 33 | 18 | 24.3 |
| Erie | Erie/Presque Isle Bay | PA | 26 | 28 | 22 | 25.3 |
| Erie | Lorain/Black River Mouth | OH | 24 | 30 | 25 | 26.3 |
| Michigan | Grand Haven/Grand River Mouth | MI | 13 | 54 | 13 | 26.7 |
| Erie | Toussaint River Mouth | OH | 25 | 37 | 23 | 28.3 |
| Erie | Ashtabula/Ashtabula River Mouth | OH | 30 | 23 | 40 | 31 |
| Superior | Marquette/Dead River Mouth | MI | 37 | 7 | 57 | 33.7 |
| Michigan | Chicago-Calumet Port | IL | 40 | 13 | 55 | 36 |
| Erie | Detroit/Detroit River | MI | 38 | 8 | 64 | 36.7 |
| Huron | Alpena/Thunder Bay River Mouth | MI | 47 | 19 | 68 | 44.7 |
| Huron | Rogers City/Calcite | MI | 60 | 22 | 91 | 57.7 |
| Superior | Two Harbors | MN | 66 | 24 | 106 | 65.3 |