A Research project was developed to evaluate the use of systems analysis techniques in New York State's multiple purpose comprehensive water resources planning program. In conjunction with an on-going planning study, hydrologic models were developed for evaluation of various management schemes. The Oswego River Basin, located in central New York, was used as the vehicle for carrying out the project. In applying systems analysis techniques to the river basin, a number of models were constructed. Management programs were analyzed on two different time bases; one, an overall budgeting or allocating of waters to various purposes on a long time interval and the other, the operation of the physical system on a transient basis during flood periods. As a result, a monthly or 'conservation' simulation model, a monthly optimization model, and a flood simulation model were developed. The flood routing model was a mathematical representation of a hydraulic system and consisted of the lakes and reservoirs in the Oswego River Basin and their connecting waterways. (Author)