| Specimen ID | 274059 |
| Group | Mollusks-Gastropods |
| Genus | Bithynia |
| Species | tentaculata |
| Common Name | mud bithynia |
| State | MT |
| County | Flathead |
| Locality | McWennegar Slough along N. side of SR35 near junction with Columbia Falls Stage |
| Mapping Accuracy | Accurate |
| HUC8 Name | Flathead Lake |
| HUC8 Number | 17010208 |
| HUC10 Name | Flathead River-Columbia Falls |
| HUC10 Number | 1701020802 |
| HUC12 Name | Flathead River-Lake Blaine |
| HUC12 Number | 170102080205 |
| Map | |
| Collection Day | 11 |
| Collection Month | 5 |
| Collection Year | 1959 |
| Year Accuracy | Actual |
| Potential Pathway | unknown |
| Status | established |
| Comments | From University of Montana's mollusk catalog. |
| Record Type | Personal communication |
| Museum Cat Number | USNM 1286065 |
| Freshwater/Marine | Freshwater |
| Number Collected | 4 |
