City Rock issued the following announcement on July 2.
Due to the continued high river level on the Rock River the City of Rock Island is recommending boaters avoid the Rock River west of Ben Williamson Park. The boat barrier buoys are currently not in place as a result of the high river, thus making the Steel Dam hard to see. The high river levels combined with the strong current makes this area extremely dangerous. Avoid this area at all cost.
Once the river level drops below 9.5 feet the City of Rock Island will install the boat barrier buoys. As always, use caution when boating during high river conditions.
Original source can be found here.
Source: City Rock