Llyn and Eryri
This Management Catchment is part of the Western Wales river basin and is managed by Natural Resources Wales
Management Catchment Data
Catchment Rainfall Summary
Afon Colwyn River Station
3h Total
5.00 mm
04:45-07:45
6h Total
6.60 mm
01:45-07:45
12h Total
10.40 mm
19:45 (Mar 23)-07:45
24h Total
10.40 mm
07:45 (Mar 23)-07:45
Last 24h: Max 15m intensity at 07:45 (Mar 24) 0.60 mm
Bethesda Quarry Raingauge
3h Total
6.40 mm
04:45-07:45
6h Total
6.80 mm
01:45-07:45
12h Total
6.80 mm
19:45 (Mar 23)-07:45
24h Total
6.80 mm
07:45 (Mar 23)-07:45
Last 24h: Max 15m intensity at 06:45 (Mar 24) 1.00 mm
Cwm Dyli Raingauge
3h Total
7.00 mm
04:45-07:45
6h Total
10.40 mm
01:45-07:45
12h Total
16.60 mm
19:45 (Mar 23)-07:45
24h Total
16.60 mm
07:45 (Mar 23)-07:45
Last 24h: Max 15m intensity at 05:15 (Mar 24) 1.20 mm
Porthmadog Raingauge
3h Total
2.20 mm
04:45-07:45
6h Total
2.80 mm
01:45-07:45
12h Total
2.80 mm
19:45 (Mar 23)-07:45
24h Total
2.80 mm
07:45 (Mar 23)-07:45
Last 24h: Max 15m intensity at 07:30 (Mar 24) 0.60 mm
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