A hydrokinetic chamber (22), characterized in that the hydrokinetic chamber comprises a circular cross section, with a diameter compatible with that of a propeller/vanes of a hydrokinetic turbine (23), with the hydrokinetic chamber (22) located in and altimetrically on a bottom of an Energy-Generating Module (EGM), adjacent to a bottom wall of the EGM (3), occupying an entire longitudinal length of the EGM, and planimetrically located in a space between 1 (one) pair of pressure/head hydropower generation components including a powerhouse (17) and a bulb turbine (20), wherein the hydrokinetic chamber (22) comprises:
- a water collector of the hydrokinetic chamber (21), located in and altimetrically on the bottom (3) of the EGM, on an upstream side of the EGM;
- a leak channel of the hydrokinetic chamber (26), located on the bottom of the EGM and on a downstream side of the EGM;
- a flow control gate of the hydrokinetic chamber (28), upstream from a hydrokinetic energy generation chamber (24);
- and
- first and second stop-logs for maintenance of the hydrokinetic chamber (27), the first stop-log being located at an upstream end, and the second stop-log being located at a downstream end relative to the hydrokinetic chamber (22).