Item 89033 - Portland Water District property, Great Diamond Island, Portland, 1924 Item 89033 - Portland Water District property, Great Diamond Island, Portland, 1924 Contributed by City of Portland - Planning & Development Item 89033 Zoom 4794px x 3484px - 16.0"w x 11.6"h @ 300dpi | Need a larger size? *Credit line must read: Collections of City of Portland - Planning & Development Image Info Pump House at Great Diamond Island in Great Diamond Island, Portland, was owned by Portland Water District in 1924. Deering Land Show Details