 Restoration projects have re @-@ mobilized some of the sediments that had been trapped behind bank stabilization structures , prompting concerns of exacerbated nutrient and sediment pollution locally and downstream in the northern Gulf of Mexico . A 2010 National Research Council report assessed the roles of sediment in the Missouri River , evaluating current habitat restoration strategies and alternative ways to manage sediment . The report found that a better understanding of sediment processes in the Missouri River , including the creation of a " sediment budget " – an accounting of sediment transport , erosion , and deposition volumes for the length of the Missouri River – would provide a foundation for projects to improve water quality standards and protect endangered species . 
 Restoration projects have re @-@ mobilized some of the sediments <a href='null_relcl' title='1'><mark>that</mark></a><a href='been_done' title='2'><mark>had</mark></a> been trapped behind bank stabilization structures , prompting concerns of exacerbated nutrient and sediment pollution locally and downstream in the northern Gulf of Mexico . A 2010 National Research Council report assessed the roles of sediment in the Missouri River , evaluating current habitat restoration strategies and alternative ways to manage sediment . The report found that a better understanding of sediment processes in the Missouri River , including the creation of a " sediment budget " – an accounting of sediment transport , erosion , and deposition volumes for the length of the Missouri River – would provide a foundation for projects to improve water quality standards and protect endangered species . 
Restoration projects have re @-@ mobilized some of the sediments done been trapped behind bank stabilization structures , prompting concerns of exacerbated nutrient and sediment pollution locally and downstream in da northern Gulf of Mexico . A 2010 National Research Council report assessed tdaroles of sediment in thdaissouri River , evaluating current habitat restoration strategies and alternative ways to manage sediment . Thedaport found dat a better understanding of sediment processes in the Missouri River , including the daation of a " sediment budget " – an accounting of sediment transport , erosion , and deposition volumes for the ldath of the Midauri River – would provide a foundation for projects to improve water quality standards and protect endangered species .