pɹˈiːviəsli ðə mˈiːntɹɑːɡ pˈaʊɚ stˈeɪʃən hæd tˈeɪkən ˈɔːl ʌvðə wˈɔːɾɚɹ ɪnðə lˈeɪk, bˌʌt ðə nˈiːdz ʌvðə nˈuːklɪɹ plˈænt dˈɪkteɪɾᵻd ðætðə hˈaɪdɹoʊ plˈænt wʊd ˈoʊnli biː ˈeɪbəl tə jˈuːz ðə tˈɑːp ʌv wˈɔːɾɚ.
Previously the Maentwrog power station had taken all of the water in the lake, but the needs of the nuclear plant dictated that the hydro plant would only be able to use the top  of water.