Flow and trend are computed from two live EA stage gauges spanning the fished river: Bainbridge (L2208) in upper Wensleydale and Aldwark Bridge (L2200) on the lower river near the Ouse confluence — each reporting 15-minute water level, so the fast upper dale and the broad lower river are banded independently. (A third gauge at Masham, L2205, on the middle-river estate water, was removed 2026-08-01 after EA's own sensor stopped reporting.) No gauge on the Ure measures water temperature, so the temperature signal (and the trout and grayling thermal windows that depend on it) is estimated from air temperature, not measured — treat it as indicative and check locally in warm or cold snaps. The limestone catchment buffers the river: it rises and colours fast after hill rain but clears comparatively quickly, and it fishes best on that falling, clearing water.