ɐ tˈʌnəl ænd fˈaɪnəli ɐ pˈɛnstɑːk fɹʌmðə pˈaʊɚhˌaʊs ˈaʊtlɛt tˈaʊɚ, ɪnðə lˈeɪk bᵻtwˌiːn pɹˈætvɪl ænd ðə plˈuːməz pˈaɪnz ɹᵻzˈɔːɹt, dᵻlˈɪvɚz wˈɔːɾɚ tə ðə bˈʌt vˈæli pˈaʊɚhˌaʊs æt ðə nˈɔːɹθ ˈɛnd ʌv bˈʌt vˈæli ɹˈɛzɚvwˌɑːɹ, wˌɪtʃ hɐz ɐ kəpˈæsᵻɾi ʌv fˈoːɹɾi wˈʌn ˌɛmdˈʌbəljˌuː.
A tunnel (and finally a penstock) from the powerhouse outlet tower, in the lake between Prattville and the Plumas Pines Resort, delivers water to the Butt Valley Powerhouse at the north end of Butt Valley Reservoir, which has a capacity of 41 MW.