Weather Forecasts
Metcheck
Met Office inshore waters forecast gives invaluable broad brush info on area you are going to paddle in. Use in conjunction with other sites offering more local info.
Weather Online
Magic Seaweed good for expected swell in area, though surf forecast not necessarily accurate.
Dartcom (a record of rainfall on Dartmoor)
www.windfinder.com -good for windspeed/direction. Note that swell direction is result of wind and may not be same direction as ocean swell.
General
Environment Agency (can search for river levels by river station)
This is only useful if you know what levels mean. This site:
Rainchasers is calibrating this into useful info.
Guides
UK Rivers Guide
Canoe Wales
Specific
Dartmoor and associated levels from locals
Dart
Webcams: Buckfastleigh;
Levels: RDCP (the lowest of the three black stripes is equivalent to lapping the ledge)
Maps
Exe/Barle
Webcams if it is within 2 cms of the bridge cushion then it is paddleable
Levels anything above 0.55 is OK for Lower Barle, needs to be higher for Tarr Steps
Maps
Usk/Monnow
Webcams: Brecon; Monnow
Levels
Maps
Tryweryn
Release Data
Wye
Webcams: Rhayader Fownhope Llangurig
Levels: Rhayader Builth Wells Ross on Wye
Maps: Kerne Bridge and Yat
Cardiff White Water Centre
Pump Times and Rates
To protect wildlife/minimise disturbance: Pembrokeshire Marine Code - http://www.pembrokeshiremarinecode.org.uk/
Canoe and Kayak store offer good discount to AOAC members www.canoeandkayakstore.com