Water distribution network modeling is increasingly being performed by a wider range of individuals with a variety of primary objectives. Due to advances in computer hardware and software, and a growing recognition of the value of routine model usage, hydraulic models are being asked to answer diverse questions that may require models with different configurations to achieve a proper balance between solution performance and detail. For example, currently available hardware and software make it possible to model large distribution networks in detail, which is required for some applications, such as water quality modeling. In other cases, a skeletal model is more appropriate, such as for performing quasi-dynamic simulations for everyday operational decision support. In addition, many water utilities are considering, are implementing, or already have Geographic Information Systems (GIS), and see the advantages of sharing data between their GIS and the Network Modeling System (NMS). Both of these trends highlight the need for an ability to automatically generate a model with the degree of detail appropriate for the task at hand, while reducing or eliminating duplicate data maintenance efforts. This paper discusses a set of computer tools that provide such a capability, and presents an example of its use.