Increased flexibility is vital in hydropower systems to meet future market demands, andwork is undertaken to improve hydropower machinery to handle larger ramping rates andmore frequent starts and stops. This increased flexibility simultaneously can cause rapidchanges in the flow rate known to be as flow ramping. The impacts of flow ramping ondownstream rivers due to hydropower operation are documented in several studies andexpected to increase in the future that it would require mitigation measures to providean environmentally friendly production regime.This work aims for two main tasks. First, to put a grasp on the current level and characteristics of the flow ramping in Norway by analyzing the hourly turbine discharge data forvarious hydropower plants using various hydrological indicators and tools used to quantify this impact and assessing the efficiency of the provided environmental legislationand restrictions to eliminate this impact. Second, to evaluate this flow ramping impactand mitigation measures in future production scenarios with the implementation of theHydroFlex production scenario using hydraulic modeling on the river Nidelva in Norway.Results show that the occurred flow ramping varies in terms of level and characteristicsdepending on the type and operational pattern of the power plant itself. Additionally, theprovided measures and environmental legislation to restrict this ramping showed someefficiency in reducing the magnitude of this ramping, yet; they did not cover all potentiallyecologically power plants. On the contrary, the intensity of flow ramping is expected toincrease severely due to the implementation of the HydroFlex production scenario, andthe provided traditional measures are not feasible solutions for mitigating this increasedimpact in the investigated river Nidelva. It can be concluded that it is crucial to furtherassess the efficiency of innovative technologies to coop with this increasing rampingratio. Lastly, using hydraulic modeling can be a very efficient tool for mapping out theimpact of flow ramping, and its recommended to use for further assessment of suchimpact from different production scenarios.