The present article demonstrates the necessity to develop strategies ensuring integrated land and water resources management due to a steady growth in the number of registered floods. Based on hybrid simulation a modern methodology of developing rules for the use of reservoirs is considered, and the basic criteria are formulated, which form the basis for planning the flow out of the reservoir. The effectiveness of the hydro technical structures' cascade compensating management and control mode is established using the proposed hybrid simulator based Systems Dynamics formalism. Computer simulation boundary conditions and mathematical apparatus are formulated. The developed software modules flowcharts are presented, which allows to control the water level in a reservoir and at all the subsequent river reaches depending on the predetermined hydrographs of water inflow and water pass through hydro technical structures. A case study is, finally, presented.