Records kept since 1871 say Saturday 's rain marks worst in more than century . Comment: Commissioner : Chicago River flowed `` down the 5000 block of North Monticello '' Authorities say 90 billion gallons of water fell on the city 's water district .
Records kept since 1871 say Saturday 's rain marks worst in more than century . Heavy rain more related to Tropical Storm Lowell in Pacific than Gulf Coast 's Ike . Commissioner : Chicago River flowed `` down the 5000 block of North Monticello '' Authorities say 90 billion gallons of water fell on the city 's water district .