ðɪ ˈoʊnli ˈʌðɚ sɪɡnˈɪfɪkənt wˈɔːɾɚwˌeɪ kənˈɛktɪŋ ðɪ ɐtlˈæntɪk ˈoʊʃən tə ðə kˌɑːntɪnˈɛntəl ɪntˈɪɹiɚ wʌzðə sˈeɪnt lˈɔːɹəns ɹˈɪvɚ, wˌɪtʃ flˈoʊz nˈɔːɹθiːst ˌaʊɾəv lˈeɪk ɑːntˈæɹɪˌoʊ tə mˌɑːntɹɪˈɔːl ænd kwᵻbˈɛk sˈɪɾi.
The only other significant waterway connecting the Atlantic Ocean to the continental interior was the Saint Lawrence River, which flows northeast out of Lake Ontario to Montreal and Quebec City.