3 ms·
Presumably Portland's reservoirs are located somewhere uphill (in the Cascades even?) so this would be exploiting a natural gradient.
by joeyo 12y ago
Presumably Portland's reservoirs are located somewhere uphill (in the Cascades even?) so this would be exploiting a natural gradient.
- meritt 12y agoThe reservoirs are indeed elevated around here -- washington park, mt tabor, powell butte -- so it's all gravity fed.