The works for arranging the overflow threshold from Târgu Cărbunești have reached an important point, with the completion of the central passageway for the migration of fish. The central passageway is about 24 meters long, 7 meters wide and was designed and built as a "ladder with vertical slots", with a length of 64 meters, which includes 22 pools delimited by vertical slots.
EPA Gorj received and approved the technical project for the construction of the second passage for fish on Gilort River, at the overflow threshold of the bridge on DN67B, in Targu Carbunesti. The existing spillway threshold is almost 4 m high, which is why fish of the species targeted by the project cannot cross it. In order to allow their passage, it was decided to build a "staircase with vertical slots" that includes 22 basins (delimited by vertical slots).