Environmental Maps Following is a list of freeware that provides maps of environmental interest.
To learn more about a particular item, click on the item name. But first, please read our disclaimer and permissions page if you haven't already done so. Daily Streamflow Conditions Map of the United States By US Geological Survey. Shows real-time streamflow conditions as measured at USGS gaging stations. An on-line gallery of images with descriptive information and links to relevant environmental treaties.