Flood trends and river engineering on the Mississippi River system

The 1973 Flood and Man's Constriction of the Mississippi River.

The progressive constriction of the Mississippi for navigation since 1837 has caused bottom erosion in some stretches. In others the bottom oscillates up and down with time. The high stages rise much more rapidly. Constriction of the river channel causes flooding and makes floods higher; thus navigation works degrade the protection afforded by levees. The combination of navigation works and lev...

Cahokia's emergence and decline coincided with shifts of flood frequency on the Mississippi River.

Here we establish the timing of major flood events of the central Mississippi River over the last 1,800 y, using floodwater sediments deposited in two floodplain lakes. Shifts in the frequency of high-magnitude floods are mediated by moisture availability over midcontinental North America and correspond to the emergence and decline of Cahokia--a major late prehistoric settlement in the Mississi...

Summer-time Co2 Fluxes and Carbonate System Behavior in the Mississippi River and Orinoco River Plumes

High-resolution underway measurements of surface water pH, CO2 fugacity (fCO2), and total dissolved inorganic carbon (DIC), along with discrete bottle sample analyses from depths, were obtained in July 2005 and September 2006 in the Mississippi River Plume (MRP) and the Orinoco River Plume (MRP). The resulting data were analyzed to compare and contrast the CO2 fluxes and carbonate system behavi...

Status and Trends of Selected Resources of the Upper Mississippi River System

Figure 2.7. The percentage of backwater sampling sites where dissolved oxygen concentrations during winter, at the surface or just below ice cover, were >5 mg/L (1994–2002) for fi ve study reaches of the Figure 2.8. Percent of backwaters that contained suitable habitat for sunfi shes during winter from 1994 and 2002 based on a combination of temperature, dissolved oxygen, and depth in study rea...

Review of Hydrologic and Hydraulic Studies and Unsteady Flow Routing of the 1993 Flood in the Upper Mississippi River System