Today's sediment budget of the Rhine River channel, focusing on the Upper Rhine Graben and Rhenish Massif

The river bed of the Rhine River is subject to severe erosion and sedimentation. Such high geomorphological process rates are unwanted for economical, ecological, and safety reasons. The objectives of this study were (1) to quantify the geomorphological development of the Rhine River between 1985 and 2006; (2) to investigate the bed erosion process; and (3) to distinguish between tectonic, hydrological, and human controls. We used a unique data set with thousands of bedload and suspended-load measurements and quantified the fluxes of gravel, sand, silt, and clay through the northern Upper Rhine Graben and the Rhenish Massif. Furthermore, we calculated bed level changes and evaluated the sediment budget of the channel. Sediment transport rates were found to change in the downstream direction: silt and clay loads increase because of tributary supply; sand loads increase because of erosion of sand from the bed; and gravel loads decrease because of reduced sediment mobility caused by the base-level control exerted by the uplifting Rhenish Massif. This base-level control shows tectonic setting, in addition to hydrology and human interventions, to represent a major control on morphodynamics in the Rhine. The Rhine bed appears to be in a state of disequilibrium, with an average net bed degradation of 3. mm/a. Sand being eroded from the bed is primarily washed away in suspension, indicating a rapid supply of sand to the Rhine delta. The degradation is the result of an increased sediment transport capacity caused by nineteenth and twentieth century's river training works. In order to reduce degradation, huge amounts of sediment are fed into the river by river managers. Bed degradation and artificial sediment feeding represent the major sources of sand and gravel to the study area; only small amounts of sediment are supplied naturally from upstream or by tributaries. Sediment sinks include dredging, abrasion, and the sediment output to the downstream area. Large uncertainties exist about the amounts of sediment deposited on floodplains and in groyne fields. Compared to the natural situation during the middle Holocene, the present-day gravel and sand loads seem to be lower, whereas the silt and clay loads seem to be higher. This is probably caused by the present-day absence of meander migration, the deforestation, and the reduced sediment trapping efficiency of the floodplains. Even under natural conditions no equilibrium bed level existed

Estimates of the Genuine Progress Indicator (GPI) for Oregon from 1960-2010 and recommendations for a comprehensive shareholder's report

The Genuine Progress Indicator (GPI) is a significantly more comprehensive approach to assessing economic progress than conventional measures, such as Gross Domestic Product (GDP). We estimated the GPI for the state of Oregon from 1960-2010. We found that it tracked the Gross State Product (GSP) for the period 1970-2000, but began to diverge and flatten out in 2000. The major reasons for this divergence were increasing inequality, loss of farmland, and decreasing personal consumption expenditures as a fraction of GSP. Oregon GPI/per capita leveled off in 2000, while the US GPI/capita leveled off in 1975. The GPI is not the perfect indicator of economic and social well-being, but it is a better approximation than GDP. As more states and countries begin to recognize the inappropriateness of GDP as a policy goal we can expect to see much more emphasis on and use of alternative indicators like GPI. We recommend extending these indicators to include a comprehensive shareholder's report that reflects all the state's capital assets, including built, human, social, and natural capital