After much negotiating , he relinquished his rights in 1888 .
One exception was a civil engineer who , based on his own investigations , had bought land and water rights along the river in hopes of re-selling them to the city .
After much negotiating , civil engineer relinquished civil engineer 's rights in 1888 .
One exception was a civil engineer who , based on his own investigations , had bought land and water rights along the river in hopes of re-selling them to the city .