SHANNON ESTUARY BARRAGE
Note added 24.10.20
A Shannon Estuary Barrage can take a multiplicity of forms and be used for a multiplicity of purposes.
Primary Function are listed under the following headings:
Surge Tide Flood Control
Fresh Water Conservation
Inland Waterway Network via a sea lock
SURGE TIDE FLOOD CONTROL
Flood Gates - Location Map
Tidal Flood Gates
Photo of Graigue Island, the Barrage Location
FRESH WATER CONSERVATION
Estuary Barrage and Reservoir
Ross's Tidal Barrage Hydro Power Concept, exploits both Shannon Estuary tidal water and Shannon river water flowing into a Containment Lake.
Generating capacity is estimated at circa 200 MW.
(See Swansea Lagoon Project as an example of tidal hydro).
Calculations are based on the following:
The Containment Lake extends circa 11km from Thomond Bridge, Limerick, to the Barrage.
Estimated capacity of the Containment Lake = 18 million cubic metres.
Average river flow at Thomond Bridge is 208 cumecs per second = 18 million cubic metres per day
Tidal range at Limerick Docks = 5.44m. Highest recorded tide = 8,5m
Tides Incoming ( 2 tides every 24hours 50 minutes). Tidal flow average per day = 22 million cubic metres.
Total of outgoing Tides + river flow volume = 40 million cubic metres/day.