| Station: | EAST MACHIAS RIVER - STATION 494 |
| Station Number: | S-494 |
| Town: | CRAWFORD |
| County: | WASHINGTON |
| Major Drainage: | MAINE COASTAL |
| Site Type: | STREAM/RIVER BIOMONITORING |
| Sample Type: | MACROINVERTEBRATE |
| Latitude: | 45.00142900 |
| Longitude: | -67.61727616 |
| Sample ID | Sample Date | Statutory Class | Attainment | Report | Final Determination |
| 1026 | 8/23/2001 | AA | Yes | A | |
| 1586 | 8/23/2006 | AA | Yes | A | |
| 2056 | 8/24/2011 | AA | Yes | View | A |
| 2509 | 8/24/2016 | AA | Yes | View | A |
| 2907 | 8/9/2021 | AA | Yes | View | A |
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