Lake Peosta Channel, or simply Lake Peosta or Peosta Channel, is a branch of the Mississippi River in Dubuque, Iowa. It separates Chaplain Schmitt Island from the mainland. Flooding events have built up a ridge of sediment near the mouth of the channel as a result of silting. In 1875, Lake Peosta Channel was where modern Kerper Boulevard is.
US 151/61 crosses the channel.
In 1948, Lake Peosta Channel had its dams removed. Petitions were floated to force the city to remove them. In the 1950s, a boat harbor was dredged out from Lake Peosta Channel.
See also
Bee Branch Creek – a creek that outflows nearby O'Leary Lake – a lake to the north Frentress Lake – another lake, but to the south
References