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Indonesia and Malaysia are now the only countries attempting to convert peatlands to agriculture and silviculture at a large scale. The rate of carbon loss, and of associated CO2 emissions and land subsidence, is highly temperature dependent, and therefore proceeds at a faster rate in the tropics than in other climate zones. We demonstrate the rate of peat surface subsidence, increased flood risk and carbon emission for the Kampar Peninsula (KP) in Riau, Indonesia. An elevation model (DTM) was constructed from LiDAR data, and land use was determined from Landsat analyses and plantation concession data from the government. The elevation model was used to create a map of minimum peat thickness and carbon stock for the KP, assuming the base of the peat (i.e. where the underlying mineral soil layer starts) to be at 2 m above Mean Sea Level (MSL). This measure of minimum peat thickness can underestimate actual peat thickness by several metres, as the peat base is actually often around or even below MSL, as explained in this report.