Welcome To The United States Geological Survey
The U.S. Geological Survey's (USGS) mission is to provide reliable scientific
information about the Nation's natural resources. An integral part of that mission
is to provide consistent, long-term water-resources data to customers, cooperators,
and the public. To accomplish our mission, we operate a widespread surface and
ground-water data collection network as well as research a wide range of scientific
issues throughout Iowa.
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The annual total nitrogen and total phosphorus loads transported from the Cedar River Basin did not change significantly during the study. The relation between annual stream runoff and annual total nitrogen and total phosphorus yields varied between sub basins. This report describes nutrient transport during 2000–15 that can be used to evaluate future progress of nutrient reduction strategies in the Cedar River Basin.
Flood-inundation and flood-mitigation modeling of the West Branch Wapsinonoc Creek Watershed in West Branch, Iowa
The U.S. Geological Survey (USGS) in cooperation with the city of West Branch and the Herbert Hoover National Historic Site of the National Park Service assessed flood-mitigation scenarios within the West Branch Wapsinonoc Creek watershed. The scenarios are intended to demonstrate several means of decreasing peak streamflows and improving the conveyance of overbank flows from the West Branch Wapsinonoc Creek and its tributary Hoover Creek where they flow through the city and the Herbert Hoover National Historic Site located within the city.
Story Map: Nutrient Pollution in the Mississippi River Watershed
A story map providing a general overview describing why nutrients are a problem, where they originate, and what is being done to reduce input into the Mississippi River.
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