When I ask for an explanation, Mike is quick with the math: The forests are fed by the abnormally high rainfall on the western slopes of the Olympic Mountains, ranging from about 80 inches [200 cm] a year near the coast to 150 inches [400 cm] or more along the river valleys in the foothills.
Sewaktu saya meminta penjelasan, Mike langsung mengutip statistik: Hutan ini diairi oleh curah hujan yang luar biasa tinggi di lereng barat Pegunungan Olympic, berkisar antara sekitar 200 sentimeter setahun di dekat pantai hingga 400 sentimeter atau lebih di sepanjang lembah sungai di daerah perbukitan.