In-depth studies in river hydrology, fluvial geomorphology, transboundary water treaties, and cartographic analysis.
Formed by the Allegheny and Monongahela in Pittsburgh, the 981-mile Ohio River contributes more volume to the Mississippi River than the Missouri, sustained by 20 modern lock and dam facilities.
Connecting the Laurentian Great Lakes to the Gulf of St. Lawrence, this 744-mile transboundary waterway drains 21% of the world's surface fresh water through a deep tectonic rift valley.
America's deepest river gorge cuts 7,993 feet into the basalt mountains of Oregon and Idaho along the 1,078-mile Snake River, center of the major Pacific salmon restoration controversy.
Spanning 1,290 miles from Texas and New Mexico to Louisiana, the Red River carries intensely red Permian clay soils and high natural salinity into the Atchafalaya River channel.
Descending from 14,000-foot Colorado peaks to Arkansas floodplains over 1,469 miles, the Arkansas River powers one of America's premier interior industrial barge networks.
The Tennessee Valley Authority (TVA) transformed a 652-mile flood-prone river into America's most coordinated hydroelectric and flood control reservoir chain.
Rising in West Virginia and coursing 405 miles past Washington, D.C., the Potomac carves the famous Atlantic Fall Line at Great Falls into the Chesapeake Bay.
Flowing 444 miles over ancient Paleozoic bedrock, the Susquehanna delivers over 50% of all freshwater entering the ecologically vital Chesapeake Bay.
Once a two-million-acre lush riparian wilderness, the Colorado River Delta was completely desiccated by upstream dams until historic pulsed-flow restoration treaties.
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