Ray informs Fraser that he's fishing in the Chicago reservoir, which provides the city with drinking water, and there are no fish in the reservoir. Chicago's water is provided from Lake Michigan (which has plenty of fish in it). Any reservoirs Chicago has are actually used for flood runoff and would not be used for drinking water.
When Benson and and Stanley find the boot print after Muldoon makes his escape "Hotel California" should read be backwards. The name would be normal when looking at the heel when being held, but when the heel is on the ground it would read as a reverse mirror image.