Table 1. Variables hypothesized to be important in predicting E. coli concentration in 2015.
Codes are used in subsequent model selection tables (Tables S4A and S4B).
| Variable | Code | Classification | Base level |
|---|---|---|---|
| Site type | ST | Intake; Tap | Intake |
| Intake category | IC | Stream; Spring | Stream |
| Sediment disturbance | SD | Undisturbed; Disturbed | Undisturbed |
| Intake substrate | IS | Rock only; with sand; with mud | Rock only |
| Cattle presence | C | Absent; Present | Absent |
| Agriculture presence | A | Absent; Present | Absent |
| Turbidity | Tu | Continuous; FAU/100 | – |
| Temperature | T | Continuous | – |
| Salinity | S | Continuous | – |
| pH | pH | Continuous | – |
| Cattle access | CA | Yes; No | Yes |
| Faces presence | F | Absent; Present in forest; Present in water or on stream banks | Absent |
| Compliant level 1 Watershared area | ARA | None; Intake entirely within conserved area | None |