Natural Resources Wales has outlined five options for St Asaph to help prevent future flooding.
Days of severe weather have taken their toll in coastal areas around Wales.
Why has Britain been battered by a seemingly endless series of severe storms since the start of December?
Natural Resources Wales (NRW) says more than 1,000 native white-clawed crayfish have been released into a Welsh river as part of continued efforts to save the species from extinction.
It's the third year NRW officers have captive reared and released the juvenile crayfish working in conjunction with the Wye and Usk Foundation.
The one-year-old crayfish were reared at Natural Resources Wales Cynrig Fish Culture Unit and have been released into specially selected ‘ark’ sites on a tributary of the River Irfon, near Builth Wells.
NRW says to date more than 2,700 captive reared crayfish have been released into the wild in a bid to offset the damage caused by the non-native American signal crayfish, climate change and the impact of pollution on habitat and water quality to the native crayfish population.
Natural Resources Wales will today start work to improve flood defences in St Asaph.
It'll mean temporary barriers can be installed when there's potential flooding.
In November 2012 one person died after 400 homes were inundated.
Almost 140 people have been prosecuted in the last 12 months in an ongoing battle against illegal fishing and poaching.
The anglers were caught committing a range of offences, from not having a rod licence to illegal netting and cruel 'foul hooking', which involves dragging hooks through the water at high speed in an attempt to impale fish on the hooks.
All but three of the 139 cases resulted in successful prosecutions and combined fines of £18,468, as well as the confiscation of equipment.
Natural Resources Wales warns illegal fishing is damaging to the angling industry, which is worth more than £150 million to the Welsh economy.
A spokesperson said: "Angling helps protect the environment, is a big draw for tourism and plays a major role in the local economy.
"It's important that we continue to crack down on illegal fishing activity so that it remains sustainable for licensed fisherman."
The Met Office says severe gales are on their way for South Wales.
It says winds will strengthen tonight and peak on Saturday with gusts of up to 80 mph possible.
'The public should be prepared for disruption to transport and locally to power supplies, particularly when combined with the impacts of heavy rainfall.' - Met Office
There are two flood warnings and 10 flood alerts in force.
The Met Office has issued a 'be aware' warning of heavy rain for parts of Wales until late on Saturday.
The areas affected are :
Blaenau Gwent, Bridgend, Caerphilly, Cardiff, Carmarthenshire, Merthyr Tydfil, Monmouthshire, Neath Port Talbot, Newport, Pembrokeshire, Powys, Rhonnda Cynon Taff, Swansea, Torfaen, Vale of Glamorgan and Ceredigion.
There are 19 flood alerts in force.
Barrage road closed, pedestrians & cyclists use top path. High tide 10.40am. Reopens midday subject to debris T: 029 2070 0234
Barrage now closed completely due to severe weather. High tide 10.40am. Clear up in progress. Will reopen asap T029 2070 0234.
The severe weather's brought problems with trees down and flooding in places:
- At Newgale the A487 is closed in both directions because of debris on the road and flooding near Welsh Road.
- In Penarth the Esplanade is closed because of flooding and strong winds from Beach Road / Bridgeman Road to Cliff Hill. It's also affecting Beach Road between Rectory Road and the Esplanade and Rectory Road between Stanwell Road and Windsor Terrace.
- Strong winds on the A55 Britannia Bridge mean there's a 30 mph speed limit.
- Strong winds on the M48 Severn Bridge mean a 40 mph speed limit.
The Met Office has issued an Amber 'be prepared' warning of strong winds for South and South West Wales.
Forecasters are predicting speeds of up to 70 mph.
'The public should be prepared for the risk of further disruption to transport and power due to fallen trees. Additionally, dangerously large waves will over top coastlines and bring the risk of further erosion and damage.' - Met Office.
There are four flood warnings and seven flood alerts in force from Anglesey to Gower
Police have closed a road near Hirwaun for safety after several vehicles collided with a fallen tree.
The A465 Heads Of The Valleys Road is closed between A4059 Hirwaun Road / Brecon Road (Hirwaun Roundabout) and B4276 Merthyr Road (Llwydcoed / Baverstocks).
South Wales Fire & Rescue Service said four cars were involved, with four walking wounded and two further casualties.
Police are at the scene, they added, and highways are on their way to clear the road.