Seine Commercial craft (barges and push-tows) can use the river from Marcilly-sur-Seine, to its mouth. At Paris, there are 37 bridges. The river is only above sea level from its mouth, making it slow flowing and thus easily navigable. The Seine Maritime, from the English Channel at Le Havre to Rouen, is the only portion of the Seine used by ocean-going craft. The tidal section of the Seine Maritime is followed by a canalized section ("Basse Seine") with four large multiple locks until the mouth of the Oise at Conflans-Sainte-Honorine (170 km). Smaller locks at Bougival and at Suresnes lift the
Thamalakane River built myriads of water channels - what is now known as the Okavango Delta. One of the main channels draining the Okavango Delta is the Boro River. Being blocked by the fault, it empties literally at a right angle into the waterway created by the fault, the Thamalakane River. Roughly 40 km to the west, the water found a break in the Thamalakane Fault. Again at a right angle it empties the Thamalakane River and forms the Boteti River, which incurs seasonal desiccation in some lower reaches. In the rainy season the Boteti discharges to the Makgadikgadi Pans, bringing that