A key question in the management of pastoral systems in semi-arid grasslands is how grazing and other management affects soil carbon, and whether such effects offer the potential for carbon sequestration and financial mitigation of rangeland restoration through the sale of carbon credits. Here an updated version of a prior report on soil carbon dynamics is presented for lands within the boundaries of 14 conservancies currently participating in the Northern Kenya Carbon Project (NKCP), and results and conclusions from the prior report are updated.