Monitoring and Assessment of Rivers & Streams
- Standards and classification for major river basins, 38 MRSA 467 and minor drainages, 38 MRSA 468 (off-site).
- More information about classifications.
- Total Maximum Daily Load (TMDL) documents
- Toxics including Surface Water Ambient Toxics (SWAT) monitoring reports
- Integrated Water Quality Monitoring and Assessment (305b) Reports Summarizes water quality data collected by DEP and others.
- Environmental and Geographic Analysis Database (EGAD)
- GIS Data and Maps Downloads