Newborough Warren NNR · Anglesey SAC

Seasonal Water Table Extremes — Dipwell Network 2005–2026

Mean annual summer minimum vs winter maximum · Hollingham (2026)

Summer minimum vs winter maximum water table depth (m below pipe top)

Dashed lines: Curreli et al. (2013) eco-hydrological thresholds. Green: SD15b wet slack (summer min > −0.61 m; winter max > −0.10 m). Red: SD16 dry slack (summer min > −0.98 m; winter max > −0.25 m). Hover any point for well name and values. Generated by script 14 (Hollingham 2026).

Well threshold classification

Each dipwell classified by its position relative to the Curreli et al. (2013) SD15b and SD16 thresholds on both axes. Zone A meets the wet slack target on both summer and winter axes. Zone B meets SD16 (dry slack) on both axes but falls short of SD15b on at least one. Zone C fails SD16 on one or both axes.

1Zone A — meets SD15b
31Zone B — meets SD16
41Zone C — fails SD16
73Wells total
Well Cluster Summer min (m) Winter max (m) Zone