wˌɛn ðə wˈɔːɾɚ lˈɛvəl ɪn wˈʌn ʌvðə tˈuː pˈuːlz ɹˈaɪzᵻz ænd ˌoʊvɚflˈoʊz, ðə wˈɔːɾɚ lˈɛvəl ɪnðɪ ˈʌðɚ dˈiːkɹiːsᵻz.
When the water level in one of the two pools rises and overflows, the water level in the other decreases.