| Organization | Individual |
| today Registration Date | May 28, 2025, 5:22 p.m. |
| Deployment Date | - |
| Latitude | 42.417168 |
| Longitude | -71.211219 |
| Elevation (m) | - |
| Elevation Datum | MSL |
| layers Site Type | Stream |
| Stream Name | Beaver Brook (aka Clematis Brook) |
| landscape Major Watershed | Charles River |
| Sub Basin | - |
| location_city Closest Town | Lexington |
| notes Notes | This is a site on the school campus, monitored every other year by Middle School students. |
| info | Only the most recent 72 hours of available data are shown on the sparkline plots. The plots are broken when there are gaps in the data longer than 6 hours. Plots shaded in green have recent data. Plots shaded in red have not reported data in the last 72 hours. |
| Begin Date | Total Number of Individuals Found | Pollution Tolerance Index Score | Pollution Tolerance Index Rating | Percent EPT | |
|---|---|---|---|---|---|
| April 23, 2025 | 309 | 16 | Fair - Substantial pollution likely | 1.29% | View Details |