Surface Water Flow Trends in the Nation's Streams and Rivers

Screenshot showing national lowest annual 7-day average streamflow trends from 1941-2015

Detailed Description

Changes in streamflow conditions can affect infrastructure, water supply, and ecosystems. The IWAAs Surface Water Flow Trends mapper provides access to information about long-term changes in low flows, mean flows, and peak flows. View national trends for the last 100, 75, or 50 years, or calculate trend values for a custom time period at an individual site.


Image Dimensions: 1606 x 853

Date Taken:

Location Taken: US