| Specimen ID | 877627 |
| Group | Plants |
| Genus | Butomus |
| Species | umbellatus |
| Common Name | flowering rush |
| State | OR |
| County | Umatilla |
| Locality | Columbia River at McNary Dam |
| Mapping Accuracy | Accurate |
| HUC8 Name | Middle Columbia-Lake Wallula |
| HUC8 Number | 17070101 |
| HUC10 Name | Lower Lake Wallula |
| HUC10 Number | 1707010102 |
| HUC12 Name | McNary Dam-Lake Wallula |
| HUC12 Number | 170701010207 |
| Map | |
| Collection Month | 8 |
| Collection Year | 2014 |
| Year Accuracy | Actual |
| Potential Pathway | unknown |
| Status | established |
| Reference 1 |
| Ref. Number: | 27856 |
| Author: | Perkowski, M. |
| Date: | 2015 |
| Title: | Divers prepare to yank irrigation-clogging weed |
| Publisher: | Capital Press |
|
|
| Reference 2 |
| Ref. Number: | 27928 |
| Author: | Associated Press |
| Date: | 2014 |
| Title: | Oregon's Columbia River sees first aquatic weeds capable of clogging irrigation canals |
| Publisher: | The Oregonian |
|
|
| Reference 3 |
| Ref. Number: | 28154 |
| Author: | Perkowski, M. |
| Date: | 2015 |
| Title: | Flowering rush spreads while regulations delay removal |
| Publisher: | Capital Press |
|
|
| Comments | Discovered in 2014. Divers from the U.S. Army Corps of Engineers to remove the plants in August 2015 |
| Record Type | Literature |
| Earliest Record | state |
| Freshwater/Marine | Freshwater |
