Pumping Station

THE PUMPING STATION

POSITIONING CRITERIA - Shortest access to deep waters yet avoiding the denser mangrove fringe requires analysis of bathymetry and ground survey data compilation.

Bathymetry & land survey to optimize pumping station location

Mapping the river and shoreline using combined XY data from GPS and Z from echosounder readings. Results downloaded to automated spreadsheet showing all points at or below a specified depth [above : blue dots at Z <= -2.50 m.] and the distance between the closest of those to the pivot point, determined on the land by the adequacy of its overall accessibility to the discharge box and supply canal .

FOUNDATIONS - Concrete column poured in steel piping piled down to the rocky [pelite] platter [averaging 15.94 m. below the ground level]. Poles horizontal grid 4.00 x 3.50 m. Section perpendicular to shore represented below :

Piling profile

FLOW CAPACITY : the discharge box is built to accomodate up to 6 pumps of 3.6 m3/ sec. nominal capacity each . Initial laying of 3 adduction lines to operate the first 200 ha. of ponds .

Ready to run First wave in 30 Nov.2001 15:30 Pumps on : starting to fill up the decantation pond and canals