| RecYear | | Physical quantity | Year of record |
| RecMonth | | Date/time | Month of record |
| RecDay | | Date/time | Day of record |
| Watershed | | Nominal | watershed |
| Repsite | | Code list | replicate site for a watershed |
| Spcode | | Code list | species code |
| Species | | Nominal | abbreviated species name |
| S11 | | Physical quantity | number of individuals in sample 11 (20 sweeps) |
| S12 | | Physical quantity | number of individuals in sample 12 (20 sweeps) |
| S13 | | Physical quantity | number of individuals in sample 13 (20 sweeps) |
| S14 | | Physical quantity | number of individuals in sample 14 (20 sweeps) |
| S15 | | Physical quantity | number of individuals in sample 15 (20 sweeps) |
| S16 | | Physical quantity | number of individuals in sample 16 (20 sweeps) |
| S17 | | Physical quantity | number of individuals in sample 17 (20 sweeps) |
| S18 | | Physical quantity | number of individuals in sample 18 (20 sweeps) |
| S19 | | Physical quantity | number of individuals in sample 19 (20 sweeps) |
| S20 | | Physical quantity | number of individuals in sample 20 (20 sweeps) |
| Total | | Physical quantity | total number of individuals in all samples |
