GRADUAL RECOVERY FROM FLOOD DISTURBANCE RECORDED IN SEDIMENT CORES
Here we present results from sediment cores from the Ashokan Reservoir that show up to nine distinct event deposits since 1950, each representing erosion from a historical flood. There is only a limited relationship between event peak discharge and corresponding layer thickness, suggesting that catchment erosion is controlled by various factors besides flood intensity. Event layer thickness increases to the present, despite variable magnitude in flood discharge. Clastic inputs from the most recent event and flood of record (Tropical Storm Irene, 2011) continue to the core top (2017) and suggest that these event layers do not represent a one-time sediment pulse, but rather the sum of flood derived sediment and that from the watershed’s gradual recovery.