header
headerIllinois Streamflow Assessment Model
 Progress:   Step 1     Step 2     Step 3     Step 4     Step 5  
Welcome to the Illinois Streamflow Assessment Model (ILSAM) web site. ILSAM produces statistical estimates of flow quantity in Illinois streams. The ILSAM flow estimates are representative of long-term climatic conditions, with base periods covering the past 50 years or more, but also account for recent man-made modifications to the flow amount such as have been caused by reservoirs, water-supply withdrawals, and discharges from wastewater treatment plants. Flow estimates may be obtained for thousands of stream locations within each major watershed.
Values may be updated periodically as a result of additional review and analysis or to account for recent changes in water use or water resource development.
Long-term support for the development and maintenance of ILSAM has been provided by the Illinois Department of Natural Resources, Office of Water Resources.
Data Disclaimer | Definitions | References
Step 1 Instructions:
1. Choose a watershed from the list below. The color of the selected watershed will change to red.
2. Click the "Continue" button to view data on that watershed, or select a different watershed.











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Last Modified: August 11, 2008


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