Original:  The  Inner Niger Delta, PeaceAthabasca Delta, and SacramentoSan Joaquin River Delta are notable examples. The Amazon also has an inland delta before the island of Maraj , and the  Danube has one in the valley on the Slovak-Hungarian border between Bratislava and Ia .
Revised:  The Inner Niger Delta, PeaceAthabasca Delta, and SacramentoSan Joaquin River Delta , and the Danube has one in the valley on the Slovak-Hungarian border between Bratislava and Ia .
Edit intent: coherence