| Data Fields: Field Name | Unit | Description |
| Water Code | | Stream segment code from the USGS National Hydrographic Database. |
| Waterbody Name | | Stream name from NHD database. |
| County Name | | County in which stream segment is located. |
| Town Name | | Town in which stream segment is located. Where a stream segment crosses town line(s), the given town is the one with the greatest segment representation. |
| HUC 12 | | 12-digit USGS hydrologic unit code (watershed). |
| Stream Name | | Name of stream as it appears on field data sheet. |
| Year | | Year of sample collection. |
| Month | | Month of sample collection. |
| Day | | Day of sample collection |
| Scientific Name | | Scientific name of fish species. Note that at some sites/dates, >1 electrofishing run was conducted. In these cases, there may be >1 record for individual species, each record reflecting data from an individual run. |
| Common Name | | Common name of fish species. |
| Species Code | | Fish species code. |
| Abundance (Quantitative) | | Number of fish collected. Note that at some sites/dates, >1 electrofishing run was conducted. In these cases, there may be >1 record for individual species, each record reflecting data from an individual run. |
| Abundance (Qualitative) | | Qualitative abundance. |
| Comment | | Comment. |
| Easting/Northing | | UTM coordinates: NAD83, Zone 19. Many coordinates were estimated by Maine Aquatic Biodiversity Project staff from text descriptions of sampling sites in field data sheets. |
