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The Jordan Aquifer is the largest source of groundwater, extending from northeast Iowa to south central Iowa, and is ultimately the source of much of Iowa's agricultural and industrial water. In addition to pollution threats, the aquifer is threatened by overuse in well-source irrigation, ethanol production, and the diminishment of resupply ...
The following is a list of rivers and creeks in Iowa. ... USGS Hydrologic Unit Map - State of Iowa (1974) This page was last edited on 8 January 2025 ...
The bridge crossing the Iowa River near Steamboat Rock is a launched steel I-girder bridge, the first of its kind in the U.S. [5] The bridge was designed to cross the old-growth woodland of the Iowa River valley with minimal impact. US 20 continues east toward Cedar Falls where it overlaps Iowa 58 for just over one mile (1.6 km).
Map of the United States with Iowa highlighted Iowa Cities and Counties. Iowa is a state located in the Midwestern United States. As of 2010, there are 943 incorporated cities in the U.S. state of Iowa. According to the 2020 United States Census, Iowa has 3,190,369 inhabitants and 55,857.13 square miles (144,669.3 km 2) of land. [1]
Iowa Highway 9 is the most northern of Iowa's east–west highways, traversing the entire northern tier of counties. It runs from the eastern terminus of South Dakota Highway 42 at the South Dakota border east of Sioux Falls, South Dakota near Benclare, to the Wisconsin border at Lansing where it continues as Wisconsin Highway 82.
Great River Road south (Mississippi River Road) Southern end of Great River Road overlap: Jefferson Township: 18.168: 29.239: 18: US 61 Bus. north / Iowa 2 west / Great River Road north – Donnellson, Fort Madison: Northern end of Great River Road overlap: Washington Township: 22.140: 35.631: 22: CR J40 – West Point, Fort Madison: Former ...
Northern end of Great River Road overlap: Great River Road south (9th Avenue North) Southern end of Great River Road overlap: 39.865: 64.156: Iowa 136 south (19th Avenue North) / Lincoln Highway Heritage Byway – Fulton: Southern end of Iowa 136 overlap; northern end of Lincoln Highway overlap; intersection is near the foot of the Mark Morris ...
Iowa Highway 2 (Iowa 2) is a 251-mile-long (404 km) state highway which runs across the southernmost tier of counties in the U.S. state of Iowa. At no point along its route is Iowa 2 more than 15 miles (24 km) from the Missouri state line, except for a small section near its eastern terminus.